{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/97759"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/97759","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Porous photonic crystal external cavity laser biosensor","abstract":"Embargo set by: Colleen Fallaw for item 102812 Lift date: 2019-08-10T21:27:21Z Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD system","abstract_html":"Embargo set by: Colleen Fallaw for item 102812 Lift date: 2019-08-10T21:27:21Z Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD system","abstract_has_math":false,"creators":["Huang, Qinglan"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Electrical & Computer Engr","degree_department":null,"school":null,"contributors":["Cunningham, Brian T."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2017,"date_issued":"2017-08-10T20:33:18Z","date_published":"2017-08-10T20:33:18Z","updated_at":"2026-07-22T22:24:34Z","subjects":["Photonic crystal","Label-free biosensor","External cavity laser"],"languages":["en"],"rights":["Copyright 2017 Qinglan Huang"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/97759","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Cunningham, Brian T."]},{"key":"dc:creator","label":"Author","values":["Huang, Qinglan"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2017-08-10T20:33:18Z","2019-08-11T09:15:28Z","2017-04-24","2017-05"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Electrical & Computer Engr"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M.S."]},{"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":["Photonic crystal","Label-free biosensor","External cavity laser"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2017 Qinglan Huang"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/97759"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Embargo set by: Colleen Fallaw for item 102812 Lift date: 2019-08-10T21:27:21Z Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD system","U of I Only Restriction Lifted for Item 102812 on 2019-08-11T09:15:28Z.","We report the design, fabrication, and testing of a photonic crystal (PhC) biosensor structure that incorporates a porous high refractive index TiO2 dielectric film that enables immobilization of capture proteins within an enhanced surface-area volume that spatially overlaps with the regions of resonant electromagnetic fields where biomolecular binding can produce the greatest shifts in photonic crystal resonant wavelength. Despite the nanoscale porosity of the sensor structure, the PhC slab exhibits narrowband and high efficiency resonant reflection, enabling the structure to serve as a wavelength tunable element of an external cavity laser. In the context of sensing small molecule interactions with much larger immobilized proteins, we demonstrate that the porous structure provides 3.7x larger biosensor signals than an equivalent nonporous structure, while the external cavity laser (ECL) detection method provides capability for sensing picometer-scale shifts in the PhC resonant wavelength caused by small molecule binding. The porous ECL achieves a record high figure of merit for label-free optical biosensors.","Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2019-05-01","The student, Qinglan Huang, accepted the attached license on 2017-04-20 at 19:59.","The student, Qinglan Huang, submitted this Thesis for approval on 2017-04-20 at 20:35.","This Thesis was approved for publication on 2017-04-24 at 12:14.","DSpace SAF Submission Ingestion Package generated from Vireo submission #10950 on 2017-08-10 at 15:06:39","Made available in DSpace on 2017-08-10T20:33:18Z (GMT). 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Despite the nanoscale porosity of the sensor structure, the PhC slab exhibits narrowband and high efficiency resonant reflection, enabling the structure to serve as a wavelength tunable element of an external cavity laser. In the context of sensing small molecule interactions with much larger immobilized proteins, we demonstrate that the porous structure provides 3.7x larger biosensor signals than an equivalent nonporous structure, while the external cavity laser (ECL) detection method provides capability for sensing picometer-scale shifts in the PhC resonant wavelength caused by small molecule binding. The porous ECL achieves a record high figure of merit for label-free optical biosensors.","Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2019-05-01","The student, Qinglan Huang, accepted the attached license on 2017-04-20 at 19:59.","The student, Qinglan Huang, submitted this Thesis for approval on 2017-04-20 at 20:35.","This Thesis was approved for publication on 2017-04-24 at 12:14.","DSpace SAF Submission Ingestion Package generated from Vireo submission #10950 on 2017-08-10 at 15:06:39","Made available in DSpace on 2017-08-10T20:33:18Z (GMT). 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