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You searched for subject:(spin on glass). Showing records 1 – 3 of 3 total matches.

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NSYSU

1. Lei, Szu-chin. Precision Mechanical Grinding Integrated with Spin-on-Glass Electrostatic Pulling Method for Producing Micro-hyperboloid Lensed Optical Fibers.

Degree: Master, Mechanical and Electro-Mechanical Engineering, 2016, NSYSU

A novel approach is presented for producing hyperboloid microlens structure directly on an optical single-mode fiber for enhancing the coupling efficiency between high-power laser diodes and single-mode fiber. The hyperboloid lens structure was directly produced with a flat-end single-mode fiber with the core diameter of 6.6 μm. The production has three-step process, including a precision mechanical grinding, a spin-on-glass coating and an electrostatic pulling process. After a single-mode fiber was grinded into hyperboloid shape, trace amount of spin-on-glass is attached to the grinded fiber tip and then an electrostatic pulling is used to adjust the radius of curvature of around 4-5 μm for the single-mode fiber endface. The hyperboloid microlens structure is manufactured for matching with the rectangular outlet of the semiconductor laser diode. A high average coupling efficiency around 81% is obtained, and highest reaches 86.42% for 20 produced lensed fibers. While using the produced hyperboloid fibers, which is doubled efficiency compared to the flat end fiber. The approach was saving time with a simple way of making a microlens structure, so that we testing the micorlenses stability to confirm the feasibility. The coupling stability in five minutes for 5 individual hyperboloid fibers not more than 0.17%, express the good stability for the produced hyperboloid microlensed fibers. Unlike previous with melting or other processes to forming a microlens structure, this method does not damage the fiber endface and can be re-produced. So that, the developed method provides a solution for producing hyperboloid microlensed fibers for high performance coupling between the single mode fiber and the semiconductor diode laser. Advisors/Committee Members: Ying-Chien Tsai (chair), Che-Hsin Lin (committee member), Wood-Hi Cheng (chair), Yi-Cheng Hsu (chair), Chin-Ping Yu (chair).

Subjects/Keywords: coupling efficiency; radius of curvature; microlensed; spin-on-glass; single-mode fiber; electrostatic pulling

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APA (6th Edition):

Lei, S. (2016). Precision Mechanical Grinding Integrated with Spin-on-Glass Electrostatic Pulling Method for Producing Micro-hyperboloid Lensed Optical Fibers. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0620116-231528

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

Chicago Manual of Style (16th Edition):

Lei, Szu-chin. “Precision Mechanical Grinding Integrated with Spin-on-Glass Electrostatic Pulling Method for Producing Micro-hyperboloid Lensed Optical Fibers.” 2016. Thesis, NSYSU. Accessed January 25, 2020. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0620116-231528.

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

MLA Handbook (7th Edition):

Lei, Szu-chin. “Precision Mechanical Grinding Integrated with Spin-on-Glass Electrostatic Pulling Method for Producing Micro-hyperboloid Lensed Optical Fibers.” 2016. Web. 25 Jan 2020.

Vancouver:

Lei S. Precision Mechanical Grinding Integrated with Spin-on-Glass Electrostatic Pulling Method for Producing Micro-hyperboloid Lensed Optical Fibers. [Internet] [Thesis]. NSYSU; 2016. [cited 2020 Jan 25]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0620116-231528.

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

Council of Science Editors:

Lei S. Precision Mechanical Grinding Integrated with Spin-on-Glass Electrostatic Pulling Method for Producing Micro-hyperboloid Lensed Optical Fibers. [Thesis]. NSYSU; 2016. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0620116-231528

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


Rochester Institute of Technology

2. Pandharpure, Shrinivas. Process development for integration of CoFeB/MgO-based magnetic tunnel junction (MTJ) device on silicon.

Degree: Microelectronic Engineering, 2007, Rochester Institute of Technology

Methods of communication and dissemination of information have changed dramatically with the emergence of the Internet and mobile phones. To sustain this revolution, we need reliable mass storage devices which would store information not only in large amount in small space but also for long time. Therefore, realizing high performance memory technologies is very critical for this revolution. This work contributes towards the development of one such technology; Magnetic Random Access Memory (MRAM) based on Magnetic Tunnel Junction (MTJ). The research conducted in this study is primarily focused on the process development for integrating MTJ on silicon. The film stack explored in this work is CoFeB/MgO-based. The relevant issues in this integration such as smooth bottom electrode preparation, low thermal budget, process chemistry and parameters, and MTJ patterning involving ion-milling have been addressed in this work. Ta and NiCr are evaluated as candidates for bottom electrode. Spin-on Glass (SOG)-based low temperature Inter Level Dielectric (ILD) process is developed. MTJ devices with varying sizes with four terminal contacts for on wafer testing have been designed and fabricated using the process developed. The devices exhibited Resistance-Area (RA) product in the range of 1-5 k_Um2. Recent literature on MgO-based MTJ devices has reported values in a range of 0.1 – 1000 k_um2. This data confirms the electrical integrity of the MTJ fabricated. The RA values have been observed to be unchanged on application of magnetic field (+-300Oe). Detailed investigations have been carried out to find possible causes for the absence of magnetic response from these junctions. These include XRD analysis of the MTJ stack for CoFeB crystallization and STEM-PEELS studies to investigate the chemical composition. “Neel coupling” or “Orange peel coupling” due to interface roughness is thought to be one of the main possible causes for magnetically inactive junctions. Suggestions for future are given on the basis of the results from the process and the experiments. In summary, a process has been developed for fabricating MTJ on silicon yielding desired values for junction resistivity. The magnetic response is extremely sensitive to film roughness at nanoscales and will require control of roughness at each step starting with wafer specification. It is concluded that with a control of surface roughness and recommended modifications in MTJ films, a CMOS compatible process for fabricating MTJ is plausible at RIT. (Refer to PDF file for exact formulas) Advisors/Committee Members: Kurinec, Santosh - Chair, Rommel, Sean, Moon, James.

Subjects/Keywords: CoFeB crystallization; Magnetic response; Spin-on glass; XRD analysis

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

APA (6th Edition):

Pandharpure, S. (2007). Process development for integration of CoFeB/MgO-based magnetic tunnel junction (MTJ) device on silicon. (Thesis). Rochester Institute of Technology. Retrieved from https://scholarworks.rit.edu/theses/7219

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

Chicago Manual of Style (16th Edition):

Pandharpure, Shrinivas. “Process development for integration of CoFeB/MgO-based magnetic tunnel junction (MTJ) device on silicon.” 2007. Thesis, Rochester Institute of Technology. Accessed January 25, 2020. https://scholarworks.rit.edu/theses/7219.

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

MLA Handbook (7th Edition):

Pandharpure, Shrinivas. “Process development for integration of CoFeB/MgO-based magnetic tunnel junction (MTJ) device on silicon.” 2007. Web. 25 Jan 2020.

Vancouver:

Pandharpure S. Process development for integration of CoFeB/MgO-based magnetic tunnel junction (MTJ) device on silicon. [Internet] [Thesis]. Rochester Institute of Technology; 2007. [cited 2020 Jan 25]. Available from: https://scholarworks.rit.edu/theses/7219.

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

Council of Science Editors:

Pandharpure S. Process development for integration of CoFeB/MgO-based magnetic tunnel junction (MTJ) device on silicon. [Thesis]. Rochester Institute of Technology; 2007. Available from: https://scholarworks.rit.edu/theses/7219

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

3. HUANG MEIYU STELLA. NANOSTRUCTURED MATERIALS FOR MEMORY APPLICATIONS.

Degree: 2012, National University of Singapore

Subjects/Keywords: non-volatile memory; nanocrystals; high work function metals; spin-on-glass; block co-polymer template; multi-level memory cell

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

APA (6th Edition):

STELLA, H. M. (2012). NANOSTRUCTURED MATERIALS FOR MEMORY APPLICATIONS. (Thesis). National University of Singapore. Retrieved from http://scholarbank.nus.edu.sg/handle/10635/37704

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

Chicago Manual of Style (16th Edition):

STELLA, HUANG MEIYU. “NANOSTRUCTURED MATERIALS FOR MEMORY APPLICATIONS.” 2012. Thesis, National University of Singapore. Accessed January 25, 2020. http://scholarbank.nus.edu.sg/handle/10635/37704.

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

MLA Handbook (7th Edition):

STELLA, HUANG MEIYU. “NANOSTRUCTURED MATERIALS FOR MEMORY APPLICATIONS.” 2012. Web. 25 Jan 2020.

Vancouver:

STELLA HM. NANOSTRUCTURED MATERIALS FOR MEMORY APPLICATIONS. [Internet] [Thesis]. National University of Singapore; 2012. [cited 2020 Jan 25]. Available from: http://scholarbank.nus.edu.sg/handle/10635/37704.

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

Council of Science Editors:

STELLA HM. NANOSTRUCTURED MATERIALS FOR MEMORY APPLICATIONS. [Thesis]. National University of Singapore; 2012. Available from: http://scholarbank.nus.edu.sg/handle/10635/37704

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

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