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oai:www.ideals.illinois.edu:2142/83904 2023-07-11 col_2142_5131 col_2142_14787 com_2142_5130 com_2142_9630 com_2142_234

Shannon, Mark A. Yeom, Junghoon 2015-09-25T21:12:40Z 2015-09-25T21:12:40Z 10000-01-01 2007 2007 Second, we have developed a muGPC that helps gas detectors sniff a trace amount of toxic vapors by increasing their concentration via adsorption and thermal desorption. Integration with electrostatic microvalves enabled the muGPC to achieve extremely small dead volumes and fast injection times while the power and energy required to run a microheater, a key component of the muGPC, were kept small. Another unique feature of the muGPC is the use of an array of microposts coated with thin metal-organic framework adsorbents permitting a small pressure drop across the chamber while maintaining a large surface-area-to-volume ratio. The optimization of designing the muGPC is discussed in the context of maximizing the preconcentration factor while minimizing the energy required for operation. Made available in DSpace on 2015-09-25T21:12:40Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 3301254.pdf: 4645493 bytes, checksum: 62f38dd85718dc2a393cf4149881087f (MD5) Previous issue date: 2007 Embargo set by: Seth Robbins for item 85185 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs U of I Only 161 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2007. http://hdl.handle.net/2142/83904 (MiAaPQ)AAI3301254 eng Engineering, Chemical Fabrication, Characterization, and Transport Analysis of Silicon-Based Microsystems: Micro Fuel Cells and Micro Gas Perconcentrators text Mechanical Engineering Mechanical Engineering University of Illinois at Urbana-Champaign Dissertation Ph.D.