subject:(blue phase)

NSYSU

1. Lin, Yi-Ting. Studies of polymer stabilized blue phase liquid crystals phase grating.

Degree: PhD, Electro-Optical Engineering, 2013, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0705113-161901

► ããThe advantages of liquid crystal (LC) diffraction gratings include their low cost and low-power electrical switchability. Liquid crystal is easily controlled by exploiting common electro-optical… (more)

▼ ããThe advantages of liquid crystal (LC) diffraction gratings include their low cost and low-power electrical switchability. Liquid crystal is easily controlled by exploiting common electro-optical behaviors. To form a phase grating profile, the LC must have a periodically varying refractive index. Previous works by the authors showed that, because of the intrinsic optical anisotropy of LCs, the optical properties of these gratings are highly dependent on the polarization state of incident light. Some polarization-independent gratings use conventional orthogonally aligned nematic LC in one cell. However, even though the diffraction intensity is independent of light polarization, the diffraction beam polarization still depends on the angle between the polarization of the incident beam and the LC alignment. ããBlue phases (BPs) have been in chiral liquid crystals between the cholesteric and isotropic phases The BP of a self-assembled three-dimensional cubic structure with lattice periods of several hundred nanometers exhibits not only selective Bragg reflections of light in the visible wavelength, but also optical isotropy owing to its highly symmetric molecular structure. A BPLC is optically isotropic when no voltage is applied, and phase-only modulation occurs when an electric field is applied parallel to the direction of propagated light. However, the use of in-plane switching (IPS) electrodes makes the grating polarization-dependent and retains background diffraction from the patterned electrode. ããThis dissertation discusses the control of a polarization-independent and rapidly responding polymer-stabilized blue phase liquid crystal (PSBP) phase grating by exploiting the variation in the voltage-induced birefringence of the LC under a varying phase. The electro-optical properties, including the voltage-dependent diffraction intensity, polarization-independence and response time, are also discussed. ããFirstly, the hybrid PSBP liquid crystal phase grating was studied. This grating consists of hybrid PSBPs with different Kerr constants that are determined by varied phase separation conditions. When cured at a high temperature, a loose PSBP network is formed and a large Kerr effect is obtained. Accordingly, the electric-field-induced birefringence of PSBPI is lower than that of PSBPII at a given driving voltage. The non-patterned electrode and optical isotropy of both PSBPI and PSBPII enable elimination of the diffraction effect when the voltage is off. The diffraction intensity increases with the applied voltage up to a maximum at 150V. ããSecondly, a polarization-independent and rapidly responding dye-doped (DD) PSBP liquid crystal phase grating was realized with two different phase states. The non-patterned electrode and the optical isotropy of the PSBP completely eliminate the diffraction effect when the voltage is off. The diffraction intensity can be increased by applying a uniform electrical field, which induces a phase difference in the DDPSBP. The diffraction efficiency exceeds 6%, which is 7-fold higher than… Advisors/Committee Members: Chin-Ping Yu (chair), Wei Lee (chair), Kuang-Yao Lo (chair), Chi-Yen Huang (chair), Tsung-Hsien Lin (committee member), Andy Fuh (chair).

Subjects/Keywords: azobenzene; phase grating; blue phase; Liquid crystal

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APA (6^th Edition):

Lin, Y. (2013). Studies of polymer stabilized blue phase liquid crystals phase grating. (Doctoral Dissertation). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0705113-161901

Chicago Manual of Style (16^th Edition):

Lin, Yi-Ting. “Studies of polymer stabilized blue phase liquid crystals phase grating.” 2013. Doctoral Dissertation, NSYSU. Accessed April 18, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0705113-161901.

MLA Handbook (7^th Edition):

Lin, Yi-Ting. “Studies of polymer stabilized blue phase liquid crystals phase grating.” 2013. Web. 18 Apr 2021.

Vancouver:

Lin Y. Studies of polymer stabilized blue phase liquid crystals phase grating. [Internet] [Doctoral dissertation]. NSYSU; 2013. [cited 2021 Apr 18]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0705113-161901.

Council of Science Editors:

Lin Y. Studies of polymer stabilized blue phase liquid crystals phase grating. [Doctoral Dissertation]. NSYSU; 2013. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0705113-161901

NSYSU

2. Chen, Chun-Wei. Study of Tunable Random Lasing in Blue Phase Liquid Crystals.

Degree: Master, Electro-Optical Engineering, 2014, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0019114-232221

► For conventional lasers, light scattering is the most unwanted factor due to the reduction in lasing quality, while scattering is the key to developing random… (more)

▼ For conventional lasers, light scattering is the most unwanted factor due to the reduction in lasing quality, while scattering is the key to developing random lasers. The feedback mechanism of random lasing is based on multiple scattering and interference effects in a chaotic amplifying medium. Such a laser possesses several unique and useful features, including multimode lasing, low spatial coherence, omnidirectional output, mirrorless cavity and simple fabrication process. Therefore, random lasers have enormous potential for applying to spackle-free imaging, lighting and optical communication devices. However, for typical random laser systems, including organic and inorganic media, it is hard to modulate the scattering domain size within one sample. Although blue phase liquid crystals exhibit optical isotropy on a macro scale, the discontinuity across the platelet boundaries still causes light scattering. This phenomenon can easily be observed when infusing a blue phase liquid crystal into a thick sandwich cell (d > 100 Î¼m). Disordered platelet texture enables random lasing in liquid crystal blue phases, whose switchability and tunability of laser characteristics are reported in this thesis. The lasing action can be switched between coherent type and incoherent type by the thermal hysteresis effect. The randomness of lasing wavelengths can be determined by the platelet (domain) size, which can be set by controlling the cooling rate. After the blue phase scattering system is polymer-stabilized, coherent random lasing may occur in both the blue phase with an extended temperature interval and the isotropic liquid state; also, the selected modes are constant from one pulse to another. Additionally, if the laser dye is sensitive to temperature, the excitation threshold and the emission spectrum could be altered via thermal control. Advisors/Committee Members: Tsung-Hsien Lin (committee member), Wei Lee (chair), Chi-Yen Huang (chair), Kuang-Yao Lo (chair), Andy Ying-Guey, Fuh (chair).

Subjects/Keywords: blue phase; liquid crystal; scattering; random laser

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APA (6^th Edition):

Chen, C. (2014). Study of Tunable Random Lasing in Blue Phase Liquid Crystals. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0019114-232221

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Chen, Chun-Wei. “Study of Tunable Random Lasing in Blue Phase Liquid Crystals.” 2014. Thesis, NSYSU. Accessed April 18, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0019114-232221.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Chen, Chun-Wei. “Study of Tunable Random Lasing in Blue Phase Liquid Crystals.” 2014. Web. 18 Apr 2021.

Vancouver:

Chen C. Study of Tunable Random Lasing in Blue Phase Liquid Crystals. [Internet] [Thesis]. NSYSU; 2014. [cited 2021 Apr 18]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0019114-232221.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Chen C. Study of Tunable Random Lasing in Blue Phase Liquid Crystals. [Thesis]. NSYSU; 2014. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0019114-232221

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

3. Liao, Po-Hsuan. Study of Electro-optical Effects in Polymer Stabilized Blue-Phase Liquid Crystal displays.

Degree: Master, Electro-Optical Engineering, 2012, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0726112-021734

► In previous studies, I learned the curing of the electro-optical effects in polymer stabilize blue phase liquid crystal under different temperature, such as the hysteresis… (more)

Subjects/Keywords: hysteresis; blue phase; monomer; drive voltage

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APA (6^th Edition):

Liao, P. (2012). Study of Electro-optical Effects in Polymer Stabilized Blue-Phase Liquid Crystal displays. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0726112-021734

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Liao, Po-Hsuan. “Study of Electro-optical Effects in Polymer Stabilized Blue-Phase Liquid Crystal displays.” 2012. Thesis, NSYSU. Accessed April 18, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0726112-021734.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Liao, Po-Hsuan. “Study of Electro-optical Effects in Polymer Stabilized Blue-Phase Liquid Crystal displays.” 2012. Web. 18 Apr 2021.

Vancouver:

Liao P. Study of Electro-optical Effects in Polymer Stabilized Blue-Phase Liquid Crystal displays. [Internet] [Thesis]. NSYSU; 2012. [cited 2021 Apr 18]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0726112-021734.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Liao P. Study of Electro-optical Effects in Polymer Stabilized Blue-Phase Liquid Crystal displays. [Thesis]. NSYSU; 2012. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0726112-021734

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Penn State University

4. Hong, Kuan-lun. All-optical Image Processing with Nonlinear Liquid Crystals.

Degree: 2013, Penn State University

URL: https://submit-etda.libraries.psu.edu/catalog/18707

► Liquid crystals are fascinating materials because of several advantages such as large optical birefringence, dielectric anisotropic, and easily compatible to most kinds of materials. Compared… (more)

▼ Liquid crystals are fascinating materials because of several advantages such as large optical birefringence, dielectric anisotropic, and easily compatible to most kinds of materials. Compared to the electro-optical properties of liquid crystals widely applied in displays and switching application, transparency through most parts of wavelengths also makes liquid crystals a better candidate for all-optical processing. The fast response time of liquid crystals resulting from multiple nonlinear effects, such as thermal and density effect can even make real-time processing realized. In addition, blue phase liquid crystals with spontaneously self-assembled three dimensional cubic structures attracted academic attention. In my dissertation, I will divide the whole contents into six parts. In Chapter 1, a brief introduction of liquid crystals is presented, including the current progress and the classification of liquid crystals. Anisotropy and laser induced director axis reorientation is presented in Chapter 2. In Chapter 3, I will solve the electrostrictive coupled equation and analyze the laser induced thermal and density effect in both static and dynamic ways. Furthermore, a dynamic simulation of laser induced density fluctuation is proposed by applying finite element method. In Chapter 4, two image processing setups are presented. One is the intensity inversion experiment in which intensity dependent phase modulation is the mechanism. The other is the wavelength conversion experiment in which I can read the invisible image with a visible probe beam. Both experiments are accompanied with simulations to realize the matching between the theories and practical experiment results. In Chapter 5, optical properties of blue phase liquid crystals will be introduced and discussed. The results of grating diffractions and thermal refractive index gradient are presented in this chapter. In addition, fiber arrays imaging and switching with BPLCs will be included in this chapter. Finally, I will give a brief summary and mention a few future researches in Chapter 6. Advisors/Committee Members: Iam Choon Khoo, Dissertation Advisor/Co-Advisor, Iam Choon Khoo, Committee Chair/Co-Chair, Julio Urbina, Committee Member, Zhiwen Liu, Committee Member, Jian Xu, Committee Member.

Subjects/Keywords: Liquid Crystal; Blue Phase Liquid Crystal

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APA (6^th Edition):

Hong, K. (2013). All-optical Image Processing with Nonlinear Liquid Crystals. (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/18707

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Hong, Kuan-lun. “All-optical Image Processing with Nonlinear Liquid Crystals.” 2013. Thesis, Penn State University. Accessed April 18, 2021. https://submit-etda.libraries.psu.edu/catalog/18707.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Hong, Kuan-lun. “All-optical Image Processing with Nonlinear Liquid Crystals.” 2013. Web. 18 Apr 2021.

Vancouver:

Hong K. All-optical Image Processing with Nonlinear Liquid Crystals. [Internet] [Thesis]. Penn State University; 2013. [cited 2021 Apr 18]. Available from: https://submit-etda.libraries.psu.edu/catalog/18707.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Hong K. All-optical Image Processing with Nonlinear Liquid Crystals. [Thesis]. Penn State University; 2013. Available from: https://submit-etda.libraries.psu.edu/catalog/18707

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

5. Liu, Fang-Yu. A Tunable Photonic Crystal Device with Multi-stable Photonic Band Gap.

Degree: Master, Electro-Optical Engineering, 2018, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0802118-003545

► Photonic crystals are composed of periodic dielectric and has tiny volume. One of the important properties of photonic crystal is that electromagnetic wave cannot transmit… (more)

Subjects/Keywords: Blue Phase; PSBP; PBG tunings; Photonic Crystal

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Liu, F. (2018). A Tunable Photonic Crystal Device with Multi-stable Photonic Band Gap. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0802118-003545

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Liu, Fang-Yu. “A Tunable Photonic Crystal Device with Multi-stable Photonic Band Gap.” 2018. Thesis, NSYSU. Accessed April 18, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0802118-003545.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Liu, Fang-Yu. “A Tunable Photonic Crystal Device with Multi-stable Photonic Band Gap.” 2018. Web. 18 Apr 2021.

Vancouver:

Liu F. A Tunable Photonic Crystal Device with Multi-stable Photonic Band Gap. [Internet] [Thesis]. NSYSU; 2018. [cited 2021 Apr 18]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0802118-003545.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Liu F. A Tunable Photonic Crystal Device with Multi-stable Photonic Band Gap. [Thesis]. NSYSU; 2018. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0802118-003545

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

6. Ding, Ting-jie. The study of the high-efficiency reflective display based on polymer-stabilized blue phase liquid crystals.

Degree: Master, Physics, 2016, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0807116-111540

► A simple method of fabricating high-reflective display with the polymer-stabilized blue phase liquid crystals (PS-BPLCs) is proposed. The PS-BPLCs are formed from the polymer monomer-doped… (more)

Subjects/Keywords: blue phase; liquid crystals; reflective display; monomer; polymer-stabilized blue phase liquid crystals

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APA (6^th Edition):

Ding, T. (2016). The study of the high-efficiency reflective display based on polymer-stabilized blue phase liquid crystals. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0807116-111540

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Ding, Ting-jie. “The study of the high-efficiency reflective display based on polymer-stabilized blue phase liquid crystals.” 2016. Thesis, NSYSU. Accessed April 18, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0807116-111540.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Ding, Ting-jie. “The study of the high-efficiency reflective display based on polymer-stabilized blue phase liquid crystals.” 2016. Web. 18 Apr 2021.

Vancouver:

Ding T. The study of the high-efficiency reflective display based on polymer-stabilized blue phase liquid crystals. [Internet] [Thesis]. NSYSU; 2016. [cited 2021 Apr 18]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0807116-111540.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Ding T. The study of the high-efficiency reflective display based on polymer-stabilized blue phase liquid crystals. [Thesis]. NSYSU; 2016. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0807116-111540

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

7. Wang, Chun-Ta. Study of Tunability and Stability of Blue Phase Liquid Crystals and its Applications.

Degree: PhD, Electro-Optical Engineering, 2012, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0904112-123117

► Blue phases have been known to exist in chiral liquid crystals between the cholesteric and isotropic phases. A blue phase as a self-assembled three-dimensional cubic… (more)

Subjects/Keywords: photonic crystal; azobenzene; blue phase; cholesteric phase; liquid crystal

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Wang, C. (2012). Study of Tunability and Stability of Blue Phase Liquid Crystals and its Applications. (Doctoral Dissertation). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0904112-123117

Chicago Manual of Style (16^th Edition):

Wang, Chun-Ta. “Study of Tunability and Stability of Blue Phase Liquid Crystals and its Applications.” 2012. Doctoral Dissertation, NSYSU. Accessed April 18, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0904112-123117.

MLA Handbook (7^th Edition):

Wang, Chun-Ta. “Study of Tunability and Stability of Blue Phase Liquid Crystals and its Applications.” 2012. Web. 18 Apr 2021.

Vancouver:

Wang C. Study of Tunability and Stability of Blue Phase Liquid Crystals and its Applications. [Internet] [Doctoral dissertation]. NSYSU; 2012. [cited 2021 Apr 18]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0904112-123117.

Council of Science Editors:

Wang C. Study of Tunability and Stability of Blue Phase Liquid Crystals and its Applications. [Doctoral Dissertation]. NSYSU; 2012. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0904112-123117

NSYSU

8. Hsieh, Cheng-Wei. Studies of the surface treatment effect for the optoelectronic properties of cholesteric blue phase liquid crystals.

Degree: Master, Physics, 2011, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0826111-172600

► In this study, we researched three kinds of surface treatment (no surface treatment, homogeneous alignment (HA) and vertical alignment (VA)) effect for the optoelectronic properties… (more)

Subjects/Keywords: phase transitions; lattice; blue phase; electrostriction; Bragg reflection; liquid crystal

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Hsieh, C. (2011). Studies of the surface treatment effect for the optoelectronic properties of cholesteric blue phase liquid crystals. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0826111-172600

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Hsieh, Cheng-Wei. “Studies of the surface treatment effect for the optoelectronic properties of cholesteric blue phase liquid crystals.” 2011. Thesis, NSYSU. Accessed April 18, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0826111-172600.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Hsieh, Cheng-Wei. “Studies of the surface treatment effect for the optoelectronic properties of cholesteric blue phase liquid crystals.” 2011. Web. 18 Apr 2021.

Vancouver:

Hsieh C. Studies of the surface treatment effect for the optoelectronic properties of cholesteric blue phase liquid crystals. [Internet] [Thesis]. NSYSU; 2011. [cited 2021 Apr 18]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0826111-172600.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Hsieh C. Studies of the surface treatment effect for the optoelectronic properties of cholesteric blue phase liquid crystals. [Thesis]. NSYSU; 2011. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0826111-172600

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

9. Chang, Jia-hon. Study of Polarization Independent Spatial Light Modulator and Optical Vortex Applications.

Degree: Master, Electro-Optical Engineering, 2015, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0716115-180440

► Spatial light modulator (SLM) is an electro-optic device possessing high spatial resolution of birefringent pixels. Each pixel can be controlled individually by the signals sent… (more)

▼ Spatial light modulator (SLM) is an electro-optic device possessing high spatial resolution of birefringent pixels. Each pixel can be controlled individually by the signals sent from the computer. Therefore, SLM is capable of modulating the spatial distribution of phase, amplitude and polarization of the incident beam, leading to plenty applications in optics and photonics, such as micro-projection and optical tweezers. This study aims to improve SLM particularly for the use in phase modulation and explore their possible applications in spatial control of optical field. Most of the liquid-crystal-on-silicon (LCoS) based SLMs utilize nematic liquid crystals as their host media. Nematic liquid crystals nevertheless possess intrinsic restrictions including polarization-dependent modulation and slow electro-optic response. Polymer-stabilized blue phase (PSBP) liquid crystals emerge as a promising candidate for SLM because of their optical isotropy and sub-millisecond switching. However, the required operating voltage of current commercially available PSBP materials is still too high for SLMs. In this work, we optimized the recipe and polymerization conditions of PSBP and finally demonstrated diffraction experiments using the phase grating generated by a PSBP-based SLM. The experimental findings revealed polarization-independent and ultrafast phase modulation. The latter part of the thesis describes simultaneous investigations on complex optical vortices generation exploiting the ability of SLM in spatial phase modulation. An optical vortex is a beam carrying an orbital angular momentum and so exhibiting helical wavefront. Using a high-resolution SLM, we were able to convert a Gaussian beam to a vortex beam carrying various orbital angular momenta. Interferometric measurements were applied to verify the vortex nature of the generated beams. In such vortex beams, different orbital angular momenta interfere with each other, thereby forming complex spatial intensity distribution. This makes SLM a more powerful technique in spatial shaping of light fields. The experimental findings agree well with the simulation results. We also demonstrate signal processing of the vortex beams with the SLM acting as both coding and decoding tools. It is believed that further development of the host PSBP materials and complex optical vortices will lead SLMs to a much wider range of practical applications in both the industries and academics. Advisors/Committee Members: Tsung-hsien Lin (committee member), Chi-Yen Huang (chair), Shie-Chang Jeng (chair), Andy Ying-Guey, Fuh (chair).

Subjects/Keywords: optical vortex; liquid crystal; Spatial light modulator; blue phase; phase modulation

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APA (6^th Edition):

Chang, J. (2015). Study of Polarization Independent Spatial Light Modulator and Optical Vortex Applications. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0716115-180440

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Chang, Jia-hon. “Study of Polarization Independent Spatial Light Modulator and Optical Vortex Applications.” 2015. Thesis, NSYSU. Accessed April 18, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0716115-180440.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Chang, Jia-hon. “Study of Polarization Independent Spatial Light Modulator and Optical Vortex Applications.” 2015. Web. 18 Apr 2021.

Vancouver:

Chang J. Study of Polarization Independent Spatial Light Modulator and Optical Vortex Applications. [Internet] [Thesis]. NSYSU; 2015. [cited 2021 Apr 18]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0716115-180440.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Chang J. Study of Polarization Independent Spatial Light Modulator and Optical Vortex Applications. [Thesis]. NSYSU; 2015. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0716115-180440

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Cambridge

10. Nosheen, Shabeena. Flexo electro-optic Liquid Crystals for Phase Modulation.

Degree: PhD, 2019, University of Cambridge

URL: https://www.repository.cam.ac.uk/handle/1810/289439

► Soft matter, self-assembled 3D photonic structures such as blue phase liquid crystals have of great interest to the displays industry and are highly desirable as… (more)

▼ Soft matter, self-assembled 3D photonic structures such as blue phase liquid crystals have of great interest to the displays industry and are highly desirable as spatial light modulators because of their polarisation independence and fast switching. However, these types of devices suffer from multistep fabrication conditions and require high threshold voltages. To overcome these limitations, two key points were considered: High flexoelectric liquid crystals are capable of uniform 3D self-assembly, with a wide temperature range but have high threshold voltages, whereas, other classes of high dielectric liquid crystals have fast electro-optic response times with low threshold voltages but show poor 3D self-assembly. In this work, new mixture formulations have been devised having both properties in moderation in order to achieve simple yet stable 3D self-assembled blue phases with fast response times at as low as possible applied fields. Dielectric materials were considered from a commercial source whereas, miscible flexoelectric soft materials were synthesised in-house. These synthesised materials were fully characterised. Then mixtures were formulated in commercial high dielectric hosts to study their miscibility, new mesogenic transitions and electro-optic responses in terms of flexoelectric and dielectric properties. The selected mixtures were further investigated for the rapid growth of blue phases and their compatibility with reactive mesogens to form stable blue phases at room temperature. This new formulation of materials has given rise to mixtures and devices which are inherently easy to fabricate allowing the robust and resilient growth of blue phases under an hour in standard laboratory conditions. Furthermore, polarisation independent electro-optic switching has been characterised at fields <1V micron m-1. For phase modulation studies of these stabilised blue phase devices, phase shift was measured using a modified Young’s slit interferometer. The observed results were very promising, with a full 2.5 pi phase shift observed at a field of 9.25 V micron m-1 when compared to earlier reported devices (which required complicated multistep fabrication processes) giving values of full 1.8 pi phase shifts at 20 V micron m-1.

Subjects/Keywords: Liquid Crystals; Flexoelectro-optic properties; Blue Phase; Phase modulation; Young's Slit

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Nosheen, S. (2019). Flexo electro-optic Liquid Crystals for Phase Modulation. (Doctoral Dissertation). University of Cambridge. Retrieved from https://www.repository.cam.ac.uk/handle/1810/289439

Chicago Manual of Style (16^th Edition):

Nosheen, Shabeena. “Flexo electro-optic Liquid Crystals for Phase Modulation.” 2019. Doctoral Dissertation, University of Cambridge. Accessed April 18, 2021. https://www.repository.cam.ac.uk/handle/1810/289439.

MLA Handbook (7^th Edition):

Nosheen, Shabeena. “Flexo electro-optic Liquid Crystals for Phase Modulation.” 2019. Web. 18 Apr 2021.

Vancouver:

Nosheen S. Flexo electro-optic Liquid Crystals for Phase Modulation. [Internet] [Doctoral dissertation]. University of Cambridge; 2019. [cited 2021 Apr 18]. Available from: https://www.repository.cam.ac.uk/handle/1810/289439.

Council of Science Editors:

Nosheen S. Flexo electro-optic Liquid Crystals for Phase Modulation. [Doctoral Dissertation]. University of Cambridge; 2019. Available from: https://www.repository.cam.ac.uk/handle/1810/289439

Kent State University

11. Kim, Min Su. Liquid Crystalline Amorphous Blue Phase: Tangled Topological Defects, Polymer-stabilization, and Device Application.

Degree: PhD, College of Arts and Sciences / Department of Chemical Physics, 2015, Kent State University

URL: http://rave.ohiolink.edu/etdc/view?acc_num=kent1448894363

► Blue phases arise from self-assembly of short-pitch chiral nematic liquid crystals by three- dimensional topological defects in thermodynamic equilibria for periodic cubic-type blue phases and… (more)

Subjects/Keywords: Materials Science; Physics; Optics; Polymers; Liquid crystal; Blue phase; Amorphous blue phase; Defects; Polymer-stabilization; Electro-optics; Chirality

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Kim, M. S. (2015). Liquid Crystalline Amorphous Blue Phase: Tangled Topological Defects, Polymer-stabilization, and Device Application. (Doctoral Dissertation). Kent State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=kent1448894363

Chicago Manual of Style (16^th Edition):

Kim, Min Su. “Liquid Crystalline Amorphous Blue Phase: Tangled Topological Defects, Polymer-stabilization, and Device Application.” 2015. Doctoral Dissertation, Kent State University. Accessed April 18, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=kent1448894363.

MLA Handbook (7^th Edition):

Kim, Min Su. “Liquid Crystalline Amorphous Blue Phase: Tangled Topological Defects, Polymer-stabilization, and Device Application.” 2015. Web. 18 Apr 2021.

Vancouver:

Kim MS. Liquid Crystalline Amorphous Blue Phase: Tangled Topological Defects, Polymer-stabilization, and Device Application. [Internet] [Doctoral dissertation]. Kent State University; 2015. [cited 2021 Apr 18]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=kent1448894363.

Council of Science Editors:

Kim MS. Liquid Crystalline Amorphous Blue Phase: Tangled Topological Defects, Polymer-stabilization, and Device Application. [Doctoral Dissertation]. Kent State University; 2015. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=kent1448894363

NSYSU

12. Lin, Shun-Mao. The study of fast-response and polarization independent diffraction grating by using blue phase liquid crystals.

Degree: Master, Physics, 2012, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0827112-232513

► In this study, the phase grating was investigated by using electro-optical characteristics of blue phase liquid crystals(BPLCs) such as fast-response and optically isotropic etc. The… (more)

Subjects/Keywords: diffraction gratings; fast-response; non-polarization dependence; phase gratings; blue phase liquid crystals

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APA (6^th Edition):

Lin, S. (2012). The study of fast-response and polarization independent diffraction grating by using blue phase liquid crystals. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0827112-232513

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Lin, Shun-Mao. “The study of fast-response and polarization independent diffraction grating by using blue phase liquid crystals.” 2012. Thesis, NSYSU. Accessed April 18, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0827112-232513.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Lin, Shun-Mao. “The study of fast-response and polarization independent diffraction grating by using blue phase liquid crystals.” 2012. Web. 18 Apr 2021.

Vancouver:

Lin S. The study of fast-response and polarization independent diffraction grating by using blue phase liquid crystals. [Internet] [Thesis]. NSYSU; 2012. [cited 2021 Apr 18]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0827112-232513.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Lin S. The study of fast-response and polarization independent diffraction grating by using blue phase liquid crystals. [Thesis]. NSYSU; 2012. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0827112-232513

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

13. Huang, Bing-Yau. The studies of opto-electrically controlled dimensional switching grating and Fresnel lens based on liquid crystals.

Degree: PhD, Physics, 2018, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0030118-172217

► This dissertation proposes two tunable devices based on liquid crystals: a switchable two-dimensional phase grating and an electrically and optically tunable Fresnel lens. The following… (more)

Subjects/Keywords: photoconductive layer; Fresnel lens; rewritable; sawtooth electrodes; blue phase liquid crystal; phase grating; dimensional switchable

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Huang, B. (2018). The studies of opto-electrically controlled dimensional switching grating and Fresnel lens based on liquid crystals. (Doctoral Dissertation). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0030118-172217

Chicago Manual of Style (16^th Edition):

Huang, Bing-Yau. “The studies of opto-electrically controlled dimensional switching grating and Fresnel lens based on liquid crystals.” 2018. Doctoral Dissertation, NSYSU. Accessed April 18, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0030118-172217.

MLA Handbook (7^th Edition):

Huang, Bing-Yau. “The studies of opto-electrically controlled dimensional switching grating and Fresnel lens based on liquid crystals.” 2018. Web. 18 Apr 2021.

Vancouver:

Huang B. The studies of opto-electrically controlled dimensional switching grating and Fresnel lens based on liquid crystals. [Internet] [Doctoral dissertation]. NSYSU; 2018. [cited 2021 Apr 18]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0030118-172217.

Council of Science Editors:

Huang B. The studies of opto-electrically controlled dimensional switching grating and Fresnel lens based on liquid crystals. [Doctoral Dissertation]. NSYSU; 2018. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0030118-172217

14. Tian, Linan. Liquid crystal blue phase for electro-optic displays.

Degree: 2014, University of Manchester

URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:219226

► Liquid crystals are a vast and diverse class of materials which ranges from fluids made up of simple rods, polymers and solutions, to elastomers and… (more)

▼ Liquid crystals are a vast and diverse class of materials which ranges from fluids made up of simple rods, polymers and solutions, to elastomers and biological organisms. Liquid crystal phases are neither crystalline, nor a ‘normal’ isotropic liquid, but lie somewhere in between these two common states of matter. Liquid crystals have found enormous use in display devices due to their electro-optic properties. In this thesis, the optical and electro-optical properties of some chiral liquid crystalline phases are studied.The optical and electro-optical behaviour of liquid crystalline blue phases has been investigated via a detailed analysis of the reflection spectrum from thin, vertical field (VF) cells. Spectral analysis in this thesis was performed using a numerical fitting technique based on the Berreman 4x4 matrix method. The validity of the technique was proved through comparisons of independent measurements with the calculated physical parameters.A novel Kerr effect measurement method was proposed in this thesis and a known material was used to verify this new method. The Kerr constant together with its dispersion relation was measured using a white light source. An unusually large Kerr constant, K, is determined in the blue phases of a non-polymer stabilized material, ~ 3x10-9 mV-2 (BPI). The large value of K is attributed to significant pre-transitional values of the dielectric anisotropy and birefringence. K follows an inverse dependence on temperature which is more marked in BPII than BPI, and we consequently suggest that the BPI demonstrates properties best suited to electro-optic devices. The field effects in blue phase include electrostriction and the influence of the Kerr effect was separated from electrostriction phenomena for the first time in this work. Finally in the Kerr effect measurements, the Kerr constant in the optically isotropic dark conglomerate phase of a bent-core material was studied for the first time, with rather low values, ~1x10-11 mV-2. The low Kerr constant can be understood in the context of the physical properties of the material.Supercooling phenomena in the blue phase were studied through an analysis of the optical properties in thin cells. Features including the Bragg reflection peak jump and hysteresis are measured through the reflection spectra. A blue phase sample with a single orientation over an area of millimeters was prepared to help the spectra study of the blue phases. Although some previous reports indicated that there may be a new blue phase in the supercooled region, we find that there is no evidence shows that the supercooled blue phase has a different structure from the BPI.Chiral molecules have been included as dopants in achiral bent-core materials to produce a range of new chiral mixtures. Different host materials and chiral dopants have been used to produce several chiral nematic materials in which the chiral nematic phase, the underlying smectic phase and the blue phases are examined. The order parameter is determined as a function of temperature in the chiral… Advisors/Committee Members: Gleeson, Helen.

Subjects/Keywords: Blue phase; Liquid crystal; Kerr effect; Bent-core marterial; Dark conglomerate phase; Electrostriction

10 more images…

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Tian, L. (2014). Liquid crystal blue phase for electro-optic displays. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:219226

Chicago Manual of Style (16^th Edition):

Tian, Linan. “Liquid crystal blue phase for electro-optic displays.” 2014. Doctoral Dissertation, University of Manchester. Accessed April 18, 2021. http://www.manchester.ac.uk/escholar/uk-ac-man-scw:219226.

MLA Handbook (7^th Edition):

Tian, Linan. “Liquid crystal blue phase for electro-optic displays.” 2014. Web. 18 Apr 2021.

Vancouver:

Tian L. Liquid crystal blue phase for electro-optic displays. [Internet] [Doctoral dissertation]. University of Manchester; 2014. [cited 2021 Apr 18]. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:219226.

Council of Science Editors:

Tian L. Liquid crystal blue phase for electro-optic displays. [Doctoral Dissertation]. University of Manchester; 2014. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:219226

University of Manchester

15. Tian, Linan. Liquid crystal blue phase for electro-optic displays.

Degree: PhD, 2014, University of Manchester

URL: https://www.research.manchester.ac.uk/portal/en/theses/liquid-crystal-blue-phase-for-electrooptic-displays(0230a0fd-6cbb-4edb-a626-ae981fe75141).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.603294

► Liquid crystals are a vast and diverse class of materials which ranges from fluids made up of simple rods, polymers and solutions, to elastomers and… (more)

▼ Liquid crystals are a vast and diverse class of materials which ranges from fluids made up of simple rods, polymers and solutions, to elastomers and biological organisms. Liquid crystal phases are neither crystalline, nor a ‘normal’ isotropic liquid, but lie somewhere in between these two common states of matter. Liquid crystals have found enormous use in display devices due to their electro-optic properties. In this thesis, the optical and electro-optical properties of some chiral liquid crystalline phases are studied. The optical and electro-optical behaviour of liquid crystalline blue phases has been investigated via a detailed analysis of the reflection spectrum from thin, vertical field (VF) cells. Spectral analysis in this thesis was performed using a numerical fitting technique based on the Berreman 4x4 matrix method. The validity of the technique was proved through comparisons of independent measurements with the calculated physical parameters. A novel Kerr effect measurement method was proposed in this thesis and a known material was used to verify this new method. The Kerr constant together with its dispersion relation was measured using a white light source. An unusually large Kerr constant, K, is determined in the blue phases of a non-polymer stabilized material, ~ 3x10-9 mV-2 (BPI). The large value of K is attributed to significant pre-transitional values of the dielectric anisotropy and birefringence. K follows an inverse dependence on temperature which is more marked in BPII than BPI, and we consequently suggest that the BPI demonstrates properties best suited to electro-optic devices. The field effects in blue phase include electrostriction and the influence of the Kerr effect was separated from electrostriction phenomena for the first time in this work. Finally in the Kerr effect measurements, the Kerr constant in the optically isotropic dark conglomerate phase of a bent-core material was studied for the first time, with rather low values, ~1x10-11 mV-2. The low Kerr constant can be understood in the context of the physical properties of the material. Supercooling phenomena in the blue phase were studied through an analysis of the optical properties in thin cells. Features including the Bragg reflection peak jump and hysteresis are measured through the reflection spectra. A blue phase sample with a single orientation over an area of millimeters was prepared to help the spectra study of the blue phases. Although some previous reports indicated that there may be a new blue phase in the supercooled region, we find that there is no evidence shows that the supercooled blue phase has a different structure from the BPI.Chiral molecules have been included as dopants in achiral bent-core materials to produce a range of new chiral mixtures. Different host materials and chiral dopants have been used to produce several chiral nematic materials in which the chiral nematic phase, the underlying smectic phase and the blue phases are examined. The order parameter is determined as a function of temperature in the…

Subjects/Keywords: 537; Blue phase; Liquid crystal; Kerr effect; Bent-core marterial; Dark conglomerate phase; Electrostriction

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Tian, L. (2014). Liquid crystal blue phase for electro-optic displays. (Doctoral Dissertation). University of Manchester. Retrieved from https://www.research.manchester.ac.uk/portal/en/theses/liquid-crystal-blue-phase-for-electrooptic-displays(0230a0fd-6cbb-4edb-a626-ae981fe75141).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.603294

Chicago Manual of Style (16^th Edition):

Tian, Linan. “Liquid crystal blue phase for electro-optic displays.” 2014. Doctoral Dissertation, University of Manchester. Accessed April 18, 2021. https://www.research.manchester.ac.uk/portal/en/theses/liquid-crystal-blue-phase-for-electrooptic-displays(0230a0fd-6cbb-4edb-a626-ae981fe75141).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.603294.

MLA Handbook (7^th Edition):

Tian, Linan. “Liquid crystal blue phase for electro-optic displays.” 2014. Web. 18 Apr 2021.

Vancouver:

Tian L. Liquid crystal blue phase for electro-optic displays. [Internet] [Doctoral dissertation]. University of Manchester; 2014. [cited 2021 Apr 18]. Available from: https://www.research.manchester.ac.uk/portal/en/theses/liquid-crystal-blue-phase-for-electrooptic-displays(0230a0fd-6cbb-4edb-a626-ae981fe75141).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.603294.

Council of Science Editors:

Tian L. Liquid crystal blue phase for electro-optic displays. [Doctoral Dissertation]. University of Manchester; 2014. Available from: https://www.research.manchester.ac.uk/portal/en/theses/liquid-crystal-blue-phase-for-electrooptic-displays(0230a0fd-6cbb-4edb-a626-ae981fe75141).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.603294

University of Cambridge

16. Nosheen, Shabeena. Flexo electro-optic liquid crystals for phase modulation.

Degree: PhD, 2019, University of Cambridge

URL: https://doi.org/10.17863/CAM.36688 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.767801

► Soft matter, self-assembled 3D photonic structures such as blue phase liquid crystals have of great interest to the displays industry and are highly desirable as… (more)

▼ Soft matter, self-assembled 3D photonic structures such as blue phase liquid crystals have of great interest to the displays industry and are highly desirable as spatial light modulators because of their polarisation independence and fast switching. However, these types of devices suffer from multistep fabrication conditions and require high threshold voltages. To overcome these limitations, two key points were considered: High flexoelectric liquid crystals are capable of uniform 3D self-assembly, with a wide temperature range but have high threshold voltages, whereas, other classes of high dielectric liquid crystals have fast electro-optic response times with low threshold voltages but show poor 3D self-assembly. In this work, new mixture formulations have been devised having both properties in moderation in order to achieve simple yet stable 3D self-assembled blue phases with fast response times at as low as possible applied fields. Dielectric materials were considered from a commercial source whereas, miscible flexoelectric soft materials were synthesised in-house. These synthesised materials were fully characterised. Then mixtures were formulated in commercial high dielectric hosts to study their miscibility, new mesogenic transitions and electro-optic responses in terms of flexoelectric and dielectric properties. The selected mixtures were further investigated for the rapid growth of blue phases and their compatibility with reactive mesogens to form stable blue phases at room temperature. This new formulation of materials has given rise to mixtures and devices which are inherently easy to fabricate allowing the robust and resilient growth of blue phases under an hour in standard laboratory conditions. Furthermore, polarisation independent electro-optic switching has been characterised at fields < 1V micron m-1. For phase modulation studies of these stabilised blue phase devices, phase shift was measured using a modified Young's slit interferometer. The observed results were very promising, with a full 2.5 pi phase shift observed at a field of 9.25 V micron m-1 when compared to earlier reported devices (which required complicated multistep fabrication processes) giving values of full 1.8 pi phase shifts at 20 V micron m-1.

Subjects/Keywords: 621.3815; Liquid Crystals; Flexoelectro-optic properties; Blue Phase; Phase modulation; Young's Slit

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Nosheen, S. (2019). Flexo electro-optic liquid crystals for phase modulation. (Doctoral Dissertation). University of Cambridge. Retrieved from https://doi.org/10.17863/CAM.36688 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.767801

Chicago Manual of Style (16^th Edition):

Nosheen, Shabeena. “Flexo electro-optic liquid crystals for phase modulation.” 2019. Doctoral Dissertation, University of Cambridge. Accessed April 18, 2021. https://doi.org/10.17863/CAM.36688 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.767801.

MLA Handbook (7^th Edition):

Nosheen, Shabeena. “Flexo electro-optic liquid crystals for phase modulation.” 2019. Web. 18 Apr 2021.

Vancouver:

Nosheen S. Flexo electro-optic liquid crystals for phase modulation. [Internet] [Doctoral dissertation]. University of Cambridge; 2019. [cited 2021 Apr 18]. Available from: https://doi.org/10.17863/CAM.36688 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.767801.

Council of Science Editors:

Nosheen S. Flexo electro-optic liquid crystals for phase modulation. [Doctoral Dissertation]. University of Cambridge; 2019. Available from: https://doi.org/10.17863/CAM.36688 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.767801

NSYSU

17. Wang, Yu-yin. Studies of the electro-optical properties of liquid-crystal Fresnel lens based on cholesteric blue phase.

Degree: Master, Physics, 2010, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0802110-013725

► In this study, a liquid crystal Fresnel lens based on the cholesteric blue phase liquid crystals is proposed. Blue phases are liquid-crystalline phases that appear… (more)

Subjects/Keywords: polarization independence; electrically controlled blue phase Fresnel lens

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Wang, Y. (2010). Studies of the electro-optical properties of liquid-crystal Fresnel lens based on cholesteric blue phase. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0802110-013725

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Wang, Yu-yin. “Studies of the electro-optical properties of liquid-crystal Fresnel lens based on cholesteric blue phase.” 2010. Thesis, NSYSU. Accessed April 18, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0802110-013725.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Wang, Yu-yin. “Studies of the electro-optical properties of liquid-crystal Fresnel lens based on cholesteric blue phase.” 2010. Web. 18 Apr 2021.

Vancouver:

Wang Y. Studies of the electro-optical properties of liquid-crystal Fresnel lens based on cholesteric blue phase. [Internet] [Thesis]. NSYSU; 2010. [cited 2021 Apr 18]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0802110-013725.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Wang Y. Studies of the electro-optical properties of liquid-crystal Fresnel lens based on cholesteric blue phase. [Thesis]. NSYSU; 2010. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0802110-013725

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

18. Huang, Lin-sung. Fast response and polarization independence microlens arrays with blue phase liquid crystals.

Degree: Master, Physics, 2013, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0618113-131825

► This work proposes a simple method of fabricating microlens arrays with BPLC material. We first make a concave polymer microlens arrays on the ITO glass… (more)

Subjects/Keywords: microlens arrays; Kerr effect; polarization independence; liquid crystal; blue phase

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APA (6^th Edition):

Huang, L. (2013). Fast response and polarization independence microlens arrays with blue phase liquid crystals. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0618113-131825

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Huang, Lin-sung. “Fast response and polarization independence microlens arrays with blue phase liquid crystals.” 2013. Thesis, NSYSU. Accessed April 18, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0618113-131825.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Huang, Lin-sung. “Fast response and polarization independence microlens arrays with blue phase liquid crystals.” 2013. Web. 18 Apr 2021.

Vancouver:

Huang L. Fast response and polarization independence microlens arrays with blue phase liquid crystals. [Internet] [Thesis]. NSYSU; 2013. [cited 2021 Apr 18]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0618113-131825.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Huang L. Fast response and polarization independence microlens arrays with blue phase liquid crystals. [Thesis]. NSYSU; 2013. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0618113-131825

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

19. Chang, Heng-Kai. Light-driven, multistable and full-color reflective blue phase liquid crystal display.

Degree: Master, Electro-Optical Engineering, 2013, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0630113-111139

► Blue phase(BP) is a mesophase existed at temperature range between cholesteric phase and isotropic phase. BP can be classified into BP I and BP II… (more)

Subjects/Keywords: full-color reflective display; 4MAB; trans-cis isomerization; photoinduced; blue phase

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Chang, H. (2013). Light-driven, multistable and full-color reflective blue phase liquid crystal display. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0630113-111139

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Chang, Heng-Kai. “Light-driven, multistable and full-color reflective blue phase liquid crystal display.” 2013. Thesis, NSYSU. Accessed April 18, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0630113-111139.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Chang, Heng-Kai. “Light-driven, multistable and full-color reflective blue phase liquid crystal display.” 2013. Web. 18 Apr 2021.

Vancouver:

Chang H. Light-driven, multistable and full-color reflective blue phase liquid crystal display. [Internet] [Thesis]. NSYSU; 2013. [cited 2021 Apr 18]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0630113-111139.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Chang H. Light-driven, multistable and full-color reflective blue phase liquid crystal display. [Thesis]. NSYSU; 2013. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0630113-111139

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

20. Luo, Pei-Hao. The study of fast-response 1-D and 2-D gratings based on blue phase liquid crystals.

Degree: Master, Physics, 2013, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0708113-012815

► In this study, we mainly discuss electro-optical characteristics of blue phase liquid crystals (BPLCs) gratings with different electric field profiles. There are two major parts… (more)

Subjects/Keywords: gratings; blue phase liquid crystals; sawtooth; polarization-dependent; response time

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Luo, P. (2013). The study of fast-response 1-D and 2-D gratings based on blue phase liquid crystals. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0708113-012815

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Luo, Pei-Hao. “The study of fast-response 1-D and 2-D gratings based on blue phase liquid crystals.” 2013. Thesis, NSYSU. Accessed April 18, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0708113-012815.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Luo, Pei-Hao. “The study of fast-response 1-D and 2-D gratings based on blue phase liquid crystals.” 2013. Web. 18 Apr 2021.

Vancouver:

Luo P. The study of fast-response 1-D and 2-D gratings based on blue phase liquid crystals. [Internet] [Thesis]. NSYSU; 2013. [cited 2021 Apr 18]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0708113-012815.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Luo P. The study of fast-response 1-D and 2-D gratings based on blue phase liquid crystals. [Thesis]. NSYSU; 2013. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0708113-012815

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

21. Lin, Jhao-Ming. Studies of optoelectronic properties of polymer-dispersed blue-phase liquid-crystal gratings.

Degree: Master, Physics, 2013, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0805113-174132

► In this study, we researched optoelectronic properties of polymer-dispersed blue-phase liquid-crystal(PDBPLC) gratings.The experimental result shows that we could get the best optoelectronic properties with the… (more)

Subjects/Keywords: blue phase liquid crystal; response time; diffraction effeciency; gratings; polymer

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Lin, J. (2013). Studies of optoelectronic properties of polymer-dispersed blue-phase liquid-crystal gratings. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0805113-174132

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Lin, Jhao-Ming. “Studies of optoelectronic properties of polymer-dispersed blue-phase liquid-crystal gratings.” 2013. Thesis, NSYSU. Accessed April 18, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0805113-174132.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Lin, Jhao-Ming. “Studies of optoelectronic properties of polymer-dispersed blue-phase liquid-crystal gratings.” 2013. Web. 18 Apr 2021.

Vancouver:

Lin J. Studies of optoelectronic properties of polymer-dispersed blue-phase liquid-crystal gratings. [Internet] [Thesis]. NSYSU; 2013. [cited 2021 Apr 18]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0805113-174132.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Lin J. Studies of optoelectronic properties of polymer-dispersed blue-phase liquid-crystal gratings. [Thesis]. NSYSU; 2013. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0805113-174132

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

22. Li, Yuan-Cheng. Study of electrically tunable, rapid response and low-loss SiN ring resonator using blue phase liquid crystal.

Degree: Master, Electro-Optical Engineering, 2013, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0625113-201146

► Ring resonators usually made of SiN (refractive index=1.6~2) or silicon (refractive index=3.4) possess wavelength selectivities and have been widely used in integrated optical circuits. The… (more)

Subjects/Keywords: blue phase liquid crystal; SiN; tunable; ring resonators

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Li, Y. (2013). Study of electrically tunable, rapid response and low-loss SiN ring resonator using blue phase liquid crystal. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0625113-201146

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Li, Yuan-Cheng. “Study of electrically tunable, rapid response and low-loss SiN ring resonator using blue phase liquid crystal.” 2013. Thesis, NSYSU. Accessed April 18, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0625113-201146.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Li, Yuan-Cheng. “Study of electrically tunable, rapid response and low-loss SiN ring resonator using blue phase liquid crystal.” 2013. Web. 18 Apr 2021.

Vancouver:

Li Y. Study of electrically tunable, rapid response and low-loss SiN ring resonator using blue phase liquid crystal. [Internet] [Thesis]. NSYSU; 2013. [cited 2021 Apr 18]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0625113-201146.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Li Y. Study of electrically tunable, rapid response and low-loss SiN ring resonator using blue phase liquid crystal. [Thesis]. NSYSU; 2013. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0625113-201146

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

23. Yu, Lu-chun. Study of Modulating Three-Dimension Photonic Liquid Crystal Band Gap Based on Optical and Electrical Tuning.

Degree: Master, Electro-Optical Engineering, 2016, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0807116-020557

► Blue phase liquid crystals are a self-aggregation three-dimensional photonic crystal. Blue phase liquid crystals exist in an extremely narrow temperature range which limits its use… (more)

▼ Blue phase liquid crystals are a self-aggregation three-dimensional photonic crystal. Blue phase liquid crystals exist in an extremely narrow temperature range which limits its use in applications. Although some researches has shown that with the help of monomers forming polymer stabilized blue phase liquid crystals(PSBP) could expand the existing temperature range, it sacrifices the photonic band gap tunable characteristic. In our previous researches, weâve developed a method to control the photonic band gap of PSBP by ester functional groups which trap positive ions. After applying a DC voltage, the trapped ions would be attracted to negative electrodes causing polymers stretched leading to a change in blue phase liquid crystalsâ lattice constant. This not only expands the existing temperature range but also provides an electrical field tuning property. This dissertation investigated different parameters of polymerization that effects on the photonic band gap tunable characteristic of polymer stabilized blue phase liquid crystals. At different cell gaps and different concentration of photoiniators, polymers distribute differently. Therefore, after an applied voltage, polymers stretch differently causing differences in photonic band gap tunings. These differences could be classified into photonic band gap shifting and photonic band gap broadening. By doping photoniniators which ionizes after irradiating light and recombines after removing the light, could expand the tuning ranges. With could use both electrical and optical fields to tune the photonic band gap of PSBP. With these polymerizing condition results, we successfully demonstrated a selective photonic band gap shifted or broadened PSBP by the same materials of blue phase liquid crystals. The photonic band gap could be shifted 200nm and the bandwidth covers all the visible light range. We also developed a localized tunable effect by different shapes of optical fields. Since photonic crystalsâ characteristics could be applied in devices such as lasers, waveguides, and fibers, the tunable properties appear to be more important. By different shapes of masks, we could easily change the tuning areas. This research is believed to have great potential in future developments. Advisors/Committee Members: Shie-Chang Jeng (chair), Tsung-Hsien Lin (committee member), Ko-Ting Cheng (chair), Chin-Ping Yu (chair).

Subjects/Keywords: bandgap modulation; photonic; blue phase liquid crystal; liquid crystal

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Yu, L. (2016). Study of Modulating Three-Dimension Photonic Liquid Crystal Band Gap Based on Optical and Electrical Tuning. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0807116-020557

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Yu, Lu-chun. “Study of Modulating Three-Dimension Photonic Liquid Crystal Band Gap Based on Optical and Electrical Tuning.” 2016. Thesis, NSYSU. Accessed April 18, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0807116-020557.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Yu, Lu-chun. “Study of Modulating Three-Dimension Photonic Liquid Crystal Band Gap Based on Optical and Electrical Tuning.” 2016. Web. 18 Apr 2021.

Vancouver:

Yu L. Study of Modulating Three-Dimension Photonic Liquid Crystal Band Gap Based on Optical and Electrical Tuning. [Internet] [Thesis]. NSYSU; 2016. [cited 2021 Apr 18]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0807116-020557.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Yu L. Study of Modulating Three-Dimension Photonic Liquid Crystal Band Gap Based on Optical and Electrical Tuning. [Thesis]. NSYSU; 2016. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0807116-020557

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

24. Kao, Yu-Han. Studies of the surface treatment effect for cholesteric blue phase liquid crystals lasers.

Degree: Master, Physics, 2012, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0814112-100601

► In this study, we study three kinds of surface treatments in the blue phase lasers. Three kinds of surface treatments include no surface treatment, homogeneous… (more)

Subjects/Keywords: blue phase; liquid crystal laser; photonic crystal; Bragg reflection

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Kao, Y. (2012). Studies of the surface treatment effect for cholesteric blue phase liquid crystals lasers. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0814112-100601

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Kao, Yu-Han. “Studies of the surface treatment effect for cholesteric blue phase liquid crystals lasers.” 2012. Thesis, NSYSU. Accessed April 18, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0814112-100601.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Kao, Yu-Han. “Studies of the surface treatment effect for cholesteric blue phase liquid crystals lasers.” 2012. Web. 18 Apr 2021.

Vancouver:

Kao Y. Studies of the surface treatment effect for cholesteric blue phase liquid crystals lasers. [Internet] [Thesis]. NSYSU; 2012. [cited 2021 Apr 18]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0814112-100601.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Kao Y. Studies of the surface treatment effect for cholesteric blue phase liquid crystals lasers. [Thesis]. NSYSU; 2012. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0814112-100601

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

25. Wang, Yun-Ya. Studies of the optoelectronic properties of polymer dispersed blue-phase liquid-crystal films.

Degree: Master, Physics, 2012, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0829112-144755

► In this study, we study polymer-dispersed blue-phase liquid-crystal (PDBPLC)films. The PDBPLC film is fabricated by using BPLC instead of nematic LC in a PDLC film.… (more)

Subjects/Keywords: optoelectronic properties; rise time; scatter; polymer; liquid crystal; blue phase

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Wang, Y. (2012). Studies of the optoelectronic properties of polymer dispersed blue-phase liquid-crystal films. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0829112-144755

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Wang, Yun-Ya. “Studies of the optoelectronic properties of polymer dispersed blue-phase liquid-crystal films.” 2012. Thesis, NSYSU. Accessed April 18, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0829112-144755.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Wang, Yun-Ya. “Studies of the optoelectronic properties of polymer dispersed blue-phase liquid-crystal films.” 2012. Web. 18 Apr 2021.

Vancouver:

Wang Y. Studies of the optoelectronic properties of polymer dispersed blue-phase liquid-crystal films. [Internet] [Thesis]. NSYSU; 2012. [cited 2021 Apr 18]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0829112-144755.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Wang Y. Studies of the optoelectronic properties of polymer dispersed blue-phase liquid-crystal films. [Thesis]. NSYSU; 2012. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0829112-144755

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

26. Hung, Ching-lang. Study of Three-Dimensional Photonic Crystal Growth in Blue-Phase Liquid Crystals.

Degree: Master, Electro-Optical Engineering, 2015, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0717115-063615

► Photonic crystals are optical materials with periodically distributed refractive indices. Their photonic bandgap effect on the flow of photons makes them appear colored like the… (more)

▼ Photonic crystals are optical materials with periodically distributed refractive indices. Their photonic bandgap effect on the flow of photons makes them appear colored like the wings of a Morpho butterfly. They have potential for use in nano lasers, photovoltaics, nonlinear optics, and other applications. Most of artificial photonic crystals are made by photolithography. For three-dimensional photonic crystals having their photonic bandgaps in the visible spectrum, the required precision and accuracy of fabrication are extremely high. Blue phases (BP) are a class of particular liquid crystal (LC) phases located between the isotropic and cholesteric phase. Such materials in their blue phases (BPI and BPII) organize spontaneously into three-dimensional cubic nanostructures. By controlling the chirality of the material or applying external fields, the color (bandgap) of a BPLC can be modulated. The conventional way of growing BP crystals is to cool the sample slowly and homogeneously from the isotropic state to the blue phase, resulting in polycrystalline texture. The diameter of each single crystal can range from 3 to 200 Î¼m depending on the cooling rate. BP polycrystals often lack uniform lattice directions, sufficient number of periods, and grain boundaries cause optical scattering, therefore hindering their applications. In this study, we created spatial temperature gradient by using two temperature-controlled stages. One stage was set at a temperature above the clearing point (the ISO stage) and the other at a temperature in the BP range (the BP stage). The BP crystal growth was conducted by moving the sample from the ISO stage to the BP stage. The single BP crystals thus grew along the moving direction. The resulting single crystals are considerably larger than those grown by the conventional approach. In this thesis, we discussed the parameters that affect the grain size, such as material, temperatures of stages, moving rate, and the addition of external fields. In the experiments, we examined the grain size and other properties of the BP crystals by means of microscopic images, KÃ¶ssel diagrams, spectra and voltage-transmittance diagrams. By adopting the proposed strategy for crystal growth, we have achieved millimeter-sized BP single crystals, enabling a wider range of applications and more in-depth fundamental research. Advisors/Committee Members: Tsung-Hsien Lin (committee member), Chi-Yen Huang (chair), Shie-Chang Jeng (chair), Andy Ying-Guey, Fuh (chair).

Subjects/Keywords: single crystal; blue phase; liquid crystal; crystal growth

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Hung, C. (2015). Study of Three-Dimensional Photonic Crystal Growth in Blue-Phase Liquid Crystals. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0717115-063615

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Hung, Ching-lang. “Study of Three-Dimensional Photonic Crystal Growth in Blue-Phase Liquid Crystals.” 2015. Thesis, NSYSU. Accessed April 18, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0717115-063615.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Hung, Ching-lang. “Study of Three-Dimensional Photonic Crystal Growth in Blue-Phase Liquid Crystals.” 2015. Web. 18 Apr 2021.

Vancouver:

Hung C. Study of Three-Dimensional Photonic Crystal Growth in Blue-Phase Liquid Crystals. [Internet] [Thesis]. NSYSU; 2015. [cited 2021 Apr 18]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0717115-063615.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Hung C. Study of Three-Dimensional Photonic Crystal Growth in Blue-Phase Liquid Crystals. [Thesis]. NSYSU; 2015. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0717115-063615

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

27. Tzou, Yi-Jen. Study of polarization-independent gratings based on polymer-stabilized optically isotropic liquid crystals.

Degree: Master, Electro-Optical Engineering, 2014, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0708114-141107

► This thesis discusses the electro-optical properties of polymer-stabilized optically isotropic liquid crystal (PSILC) phase gratings. In the first part of the study, PSILC precursors were… (more)

Subjects/Keywords: polarization independent; azobenzene; phase grating; polymer stabilized isotropic phase; polymer stabilized blue phase; monomer; Liquid crystal

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Tzou, Y. (2014). Study of polarization-independent gratings based on polymer-stabilized optically isotropic liquid crystals. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0708114-141107

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Tzou, Yi-Jen. “Study of polarization-independent gratings based on polymer-stabilized optically isotropic liquid crystals.” 2014. Thesis, NSYSU. Accessed April 18, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0708114-141107.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Tzou, Yi-Jen. “Study of polarization-independent gratings based on polymer-stabilized optically isotropic liquid crystals.” 2014. Web. 18 Apr 2021.

Vancouver:

Tzou Y. Study of polarization-independent gratings based on polymer-stabilized optically isotropic liquid crystals. [Internet] [Thesis]. NSYSU; 2014. [cited 2021 Apr 18]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0708114-141107.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Tzou Y. Study of polarization-independent gratings based on polymer-stabilized optically isotropic liquid crystals. [Thesis]. NSYSU; 2014. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0708114-141107

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

28. 廣瀬, 鉄. 次世代ディスプレイに向けたアモルファスブルー相液晶の材料設計.

Degree: 博士（工学）, 2018, Hirosaki University / 弘前大学

URL: http://hdl.handle.net/10129/6037

Subjects/Keywords: Liquid crystal; Liquid crystal display; Amorphous blue phase; Polymer-stabilized blue phase

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

廣瀬, �. (2018). 次世代ディスプレイに向けたアモルファスブルー相液晶の材料設計. (Thesis). Hirosaki University / 弘前大学. Retrieved from http://hdl.handle.net/10129/6037

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

廣瀬, 鉄. “次世代ディスプレイに向けたアモルファスブルー相液晶の材料設計.” 2018. Thesis, Hirosaki University / 弘前大学. Accessed April 18, 2021. http://hdl.handle.net/10129/6037.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

廣瀬, 鉄. “次世代ディスプレイに向けたアモルファスブルー相液晶の材料設計.” 2018. Web. 18 Apr 2021.

Vancouver:

廣瀬 �. 次世代ディスプレイに向けたアモルファスブルー相液晶の材料設計. [Internet] [Thesis]. Hirosaki University / 弘前大学; 2018. [cited 2021 Apr 18]. Available from: http://hdl.handle.net/10129/6037.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

廣瀬 �. 次世代ディスプレイに向けたアモルファスブルー相液晶の材料設計. [Thesis]. Hirosaki University / 弘前大学; 2018. Available from: http://hdl.handle.net/10129/6037

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

29. Lai, Wei-ming. Improvement of Kerr constant of blue phase liquid crystal using templating technique.

Degree: Master, Electro-Optical Engineering, 2013, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0615113-012556

► Polymer-stabilized blue phase (PSBP) is emerging as a potential candidate for use in next-generation displays because of its ultrafast response, optically isotropic dark state, and… (more)

Subjects/Keywords: liquid crystal; displays; monomer; polymer stabilized blue phase; helical twisting power; elastic restoring force

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Lai, W. (2013). Improvement of Kerr constant of blue phase liquid crystal using templating technique. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0615113-012556

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Lai, Wei-ming. “Improvement of Kerr constant of blue phase liquid crystal using templating technique.” 2013. Thesis, NSYSU. Accessed April 18, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0615113-012556.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Lai, Wei-ming. “Improvement of Kerr constant of blue phase liquid crystal using templating technique.” 2013. Web. 18 Apr 2021.

Vancouver:

Lai W. Improvement of Kerr constant of blue phase liquid crystal using templating technique. [Internet] [Thesis]. NSYSU; 2013. [cited 2021 Apr 18]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0615113-012556.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Lai W. Improvement of Kerr constant of blue phase liquid crystal using templating technique. [Thesis]. NSYSU; 2013. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0615113-012556

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

30. Huang, Shu-Wei. Electrically tunable wide-angle laser in dye-doped blue phase liquid crystals.

Degree: Master, Physics, 2013, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0623113-180634

► In this study, we study electrically tunable wide-angle laser in dye-doped blue phase liquid crystals(BPLCs). BPLCs like the three-dimensional photonic crystals(PCs), and it can be… (more)

Subjects/Keywords: Photonic band gap; blue phase liquid crystals; photonic crystals; laser; Bragg reflection

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Huang, S. (2013). Electrically tunable wide-angle laser in dye-doped blue phase liquid crystals. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0623113-180634

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Huang, Shu-Wei. “Electrically tunable wide-angle laser in dye-doped blue phase liquid crystals.” 2013. Thesis, NSYSU. Accessed April 18, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0623113-180634.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Huang, Shu-Wei. “Electrically tunable wide-angle laser in dye-doped blue phase liquid crystals.” 2013. Web. 18 Apr 2021.

Vancouver:

Huang S. Electrically tunable wide-angle laser in dye-doped blue phase liquid crystals. [Internet] [Thesis]. NSYSU; 2013. [cited 2021 Apr 18]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0623113-180634.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Huang S. Electrically tunable wide-angle laser in dye-doped blue phase liquid crystals. [Thesis]. NSYSU; 2013. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0623113-180634

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

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Open Access Theses and Dissertations