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You searched for subject:(Photodefinable). Showing records 1 – 2 of 2 total matches.

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1. Carroll, Andrew W. Photodefinable and Conductive Polydimethylsiloxane (PDMS) for Low-Cost Prototyping of Microfluidic Systems.

Degree: MS, Engineering : Electrical Engineering, 2009, University of Cincinnati

Recently, a novel photodefinable PDMS material (<i>photoPDMS</i>) was introduced as an alternative to traditional fabrication techniques for MEMS applications. The material offers a simple and low cost technique for rapid-prototyping of devices. This work describes improvements to the original process, including reduced sensitivity to curing time, the ability to resolve free-standing structures, and straighter sidewall angles. In addition, a new conductive <i>photoPDMS</i> material was developed and characterized. The use of a photopatternable polymer electrode offers advantages such as flexibility and the ability to bond with subsequent polymer layers. To demonstrate effectiveness of the conductive <i>photoPDMS</i>, an electroosmotic flow (EOF) device was designed and tested. This EOF device was fabricated entirely in <i>photoPDMS</i> materials and provides an excellent illustration of the promising advantages of the <i>photoPDMS</i> process for microfluidic applications. Advisors/Committee Members: Papautsky, Ian (Committee Chair).

Subjects/Keywords: Biomedical Research; Electrical Engineering; Engineering; Materials Science; Plastics; Polymers; photodefinable; conductive PDMS; photoPDMS; electroosmotic flow

…demonstrate the utility of the photodefinable material, though the processing and the material… …photodefinable PDMS (photoPDMS) material was recently introduced by Bhagat et al., a former… …lithography and other photodefinable polymers, photoPDMS provides several advantages for rapid… …photolithographic processes. The difference in index of refraction between air and the photodefinable… 

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

APA (6th Edition):

Carroll, A. W. (2009). Photodefinable and Conductive Polydimethylsiloxane (PDMS) for Low-Cost Prototyping of Microfluidic Systems. (Masters Thesis). University of Cincinnati. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=ucin1250719648

Chicago Manual of Style (16th Edition):

Carroll, Andrew W. “Photodefinable and Conductive Polydimethylsiloxane (PDMS) for Low-Cost Prototyping of Microfluidic Systems.” 2009. Masters Thesis, University of Cincinnati. Accessed April 02, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1250719648.

MLA Handbook (7th Edition):

Carroll, Andrew W. “Photodefinable and Conductive Polydimethylsiloxane (PDMS) for Low-Cost Prototyping of Microfluidic Systems.” 2009. Web. 02 Apr 2020.

Vancouver:

Carroll AW. Photodefinable and Conductive Polydimethylsiloxane (PDMS) for Low-Cost Prototyping of Microfluidic Systems. [Internet] [Masters thesis]. University of Cincinnati; 2009. [cited 2020 Apr 02]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1250719648.

Council of Science Editors:

Carroll AW. Photodefinable and Conductive Polydimethylsiloxane (PDMS) for Low-Cost Prototyping of Microfluidic Systems. [Masters Thesis]. University of Cincinnati; 2009. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1250719648


Georgia Tech

2. Wang, Guoan. RF MEMS Switches with Novel Materials and Micromachining Techniques for SOC/SOP RF Front Ends.

Degree: PhD, Electrical and Computer Engineering, 2006, Georgia Tech

This dissertation deals with the development of RF MEMS switches with novel materials and micromachining techniques for the RF and microwave applications. To enable the integration of RF and microwave components on CMOS grade silicon, finite ground coplanar waveguide transmission line on CMOS grade silicon wafer were first studied using micromachining techniques. In addition, several RF MEMS capacitive switches were developed with novel materials. A novel approach for fabricating low cost capacitive RF MEMS switches using directly photo-definable high dielectric constant metal oxides was developed, these switches exhibited significantly higher isolation and load capacitances as compared to comparable switches fabricated using a simple silicon nitride dielectric. The second RF MEMS switch developed is on a low cost, flexible liquid crystal polymer (LCP) substrate. Its very low water absorption (0.04%), low dielectric loss and multi-layer circuit capability make it very appealing for RF Systems-On-a-Package (SOP). Also, a tunable RF MEMS switch on a sapphire substrate with BST as dielectric material was developed, the BST has a very high dielectric constant (>300) making it very appealing for RF MEMS capacitive switches. The tunable dielectric constant of BST provides a possibility of making linearly tunable MEMS capacitor-switches. For the first time a capacitive tunable RF MEMS switch with a BST dielectric and its characterization and properties up to 40 GHz was presented. Dielectric charging is the main reliability issue for MEMS switch, temperature study of dielectric polarization effect of RF MEMS was investigated in this dissertation. Finally, integration of two reconfigurable RF circuits with RF MEMS switches were discussed, the first one is a reconfigurable dual frequency (14GHz and 35 GHz) antenna with double polarization using RF MEMS switches on a multi-layer LCP substrate; and the second one is a center frequency and bandwidth tunable filter with BST capacitors and RF MEMS switches on sapphire substrate. Advisors/Committee Members: John Papapolymerou (Committee Chair), Cliff Henderson (Committee Member), John Cressler (Committee Member), Joy Laskar (Committee Member), Shyh-Chiang Shen (Committee Member).

Subjects/Keywords: CMOS grade Silicon; Micromachining techniques; LCP; BST; Photodefinable; Novel dielectric materials; RF MEMS switch; SOC/SOP; Micromachining; Microwave devices; Dielectrics

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

APA (6th Edition):

Wang, G. (2006). RF MEMS Switches with Novel Materials and Micromachining Techniques for SOC/SOP RF Front Ends. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/14112

Chicago Manual of Style (16th Edition):

Wang, Guoan. “RF MEMS Switches with Novel Materials and Micromachining Techniques for SOC/SOP RF Front Ends.” 2006. Doctoral Dissertation, Georgia Tech. Accessed April 02, 2020. http://hdl.handle.net/1853/14112.

MLA Handbook (7th Edition):

Wang, Guoan. “RF MEMS Switches with Novel Materials and Micromachining Techniques for SOC/SOP RF Front Ends.” 2006. Web. 02 Apr 2020.

Vancouver:

Wang G. RF MEMS Switches with Novel Materials and Micromachining Techniques for SOC/SOP RF Front Ends. [Internet] [Doctoral dissertation]. Georgia Tech; 2006. [cited 2020 Apr 02]. Available from: http://hdl.handle.net/1853/14112.

Council of Science Editors:

Wang G. RF MEMS Switches with Novel Materials and Micromachining Techniques for SOC/SOP RF Front Ends. [Doctoral Dissertation]. Georgia Tech; 2006. Available from: http://hdl.handle.net/1853/14112

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