{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/83904"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/83904","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Fabrication, Characterization, and Transport Analysis of Silicon-Based Microsystems: Micro Fuel Cells and Micro Gas Perconcentrators","abstract":"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.","abstract_html":"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.","abstract_has_math":false,"creators":["Yeom, Junghoon"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Mechanical Engineering","degree_department":null,"school":null,"contributors":["Shannon, Mark A."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2015,"date_issued":"2015-09-25T21:12:40Z","date_published":"2015-09-25T21:12:40Z","updated_at":"2026-07-22T22:26:22Z","subjects":["Engineering, Chemical"],"languages":["eng"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["(MiAaPQ)AAI3301254"],"render_values":[{"text":"(MiAaPQ)AAI3301254","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/83904","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Shannon, Mark A."]},{"key":"dc:creator","label":"Author","values":["Yeom, Junghoon"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2015-09-25T21:12:40Z","10000-01-01","2007"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Mechanical Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Engineering, Chemical"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/83904","(MiAaPQ)AAI3301254"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["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."]},{"key":"dc:title","label":"Title","values":["Fabrication, Characterization, and Transport Analysis of Silicon-Based Microsystems: Micro Fuel Cells and Micro Gas Perconcentrators"]}]}],"canonical_facts":{"dc:contributor":["Shannon, Mark A."],"dc:creator":["Yeom, Junghoon"],"dc:date":["2015-09-25T21:12:40Z","10000-01-01","2007"],"dc:description":["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."],"dc:identifier":["http://hdl.handle.net/2142/83904","(MiAaPQ)AAI3301254"],"dc:language":["eng"],"dc:subject":["Engineering, Chemical"],"dc:title":["Fabrication, Characterization, and Transport Analysis of Silicon-Based Microsystems: Micro Fuel Cells and Micro Gas Perconcentrators"],"dc:type":["text"],"thesis:degree_discipline":["Mechanical Engineering"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:26:22Z"}