{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/82401"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/82401","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Direct-Write Assembly of Three-Dimensional Polyelectrolyte Scaffolds, Inorganic Hybrids, and Photonic Crystals","abstract":"Photonic crystals composed of a germanium hollow-woodpile architecture are created by replicating 3D microperiodic polymer scaffolds assembled by direct ink writing. First, polymer woodpiles with a face-centered tetragonal geometry are fabricated by direct ink writing. Chemical vapor depositions of silica and germanium are then performed under controlled conditions to produce optimal layer structures that maximize the photonic midgap/gap ratio. Next, the oxide and polymeric phases are removed to complete the fabrication of 3D hollow woodpile photonic crystals. The optical properties of the micro-periodic structures are measured after each processing step and correlated with changes in their geometry and composition. Together, the direct writing and replication schemes outlined above may offer a facile route for producing complex 3D structures, which may find potential application in composite, photonic, tissue engineering, and micro-fluidic devices.","abstract_html":"Photonic crystals composed of a germanium hollow-woodpile architecture are created by replicating 3D microperiodic polymer scaffolds assembled by direct ink writing. First, polymer woodpiles with a face-centered tetragonal geometry are fabricated by direct ink writing. Chemical vapor depositions of silica and germanium are then performed under controlled conditions to produce optimal layer structures that maximize the photonic midgap/gap ratio. Next, the oxide and polymeric phases are removed to complete the fabrication of 3D hollow woodpile photonic crystals. The optical properties of the micro-periodic structures are measured after each processing step and correlated with changes in their geometry and composition. Together, the direct writing and replication schemes outlined above may offer a facile route for producing complex 3D structures, which may find potential application in composite, photonic, tissue engineering, and micro-fluidic devices.","abstract_has_math":false,"creators":["Xu, Mingjie"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Chemical Engineering","degree_department":null,"school":null,"contributors":["Lewis, Jennifer A."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2015,"date_issued":"2015-09-25T20:43:31Z","date_published":"2015-09-25T20:43:31Z","updated_at":"2026-07-22T22:26:18Z","subjects":["Engineering, Biomedical"],"languages":["eng"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["(MiAaPQ)AAI3290438"],"render_values":[{"text":"(MiAaPQ)AAI3290438","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/82401","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Lewis, Jennifer A."]},{"key":"dc:creator","label":"Author","values":["Xu, Mingjie"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2015-09-25T20:43:31Z","10000-01-01","2007"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Chemical 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, Biomedical"]}]},{"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/2142/82401","(MiAaPQ)AAI3290438"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Photonic crystals composed of a germanium hollow-woodpile architecture are created by replicating 3D microperiodic polymer scaffolds assembled by direct ink writing. First, polymer woodpiles with a face-centered tetragonal geometry are fabricated by direct ink writing. Chemical vapor depositions of silica and germanium are then performed under controlled conditions to produce optimal layer structures that maximize the photonic midgap/gap ratio. Next, the oxide and polymeric phases are removed to complete the fabrication of 3D hollow woodpile photonic crystals. The optical properties of the micro-periodic structures are measured after each processing step and correlated with changes in their geometry and composition. Together, the direct writing and replication schemes outlined above may offer a facile route for producing complex 3D structures, which may find potential application in composite, photonic, tissue engineering, and micro-fluidic devices.","Made available in DSpace on 2015-09-25T20:43:31Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 3290438.pdf: 4139029 bytes, checksum: 7c4560609a7664b1915ec14238cd61c7 (MD5) Previous issue date: 2007","Embargo set by: Seth Robbins for item 83682 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","106 p.","Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2007."]},{"key":"dc:title","label":"Title","values":["Direct-Write Assembly of Three-Dimensional Polyelectrolyte Scaffolds, Inorganic Hybrids, and Photonic Crystals"]}]}],"canonical_facts":{"dc:contributor":["Lewis, Jennifer A."],"dc:creator":["Xu, Mingjie"],"dc:date":["2015-09-25T20:43:31Z","10000-01-01","2007"],"dc:description":["Photonic crystals composed of a germanium hollow-woodpile architecture are created by replicating 3D microperiodic polymer scaffolds assembled by direct ink writing. First, polymer woodpiles with a face-centered tetragonal geometry are fabricated by direct ink writing. Chemical vapor depositions of silica and germanium are then performed under controlled conditions to produce optimal layer structures that maximize the photonic midgap/gap ratio. Next, the oxide and polymeric phases are removed to complete the fabrication of 3D hollow woodpile photonic crystals. The optical properties of the micro-periodic structures are measured after each processing step and correlated with changes in their geometry and composition. Together, the direct writing and replication schemes outlined above may offer a facile route for producing complex 3D structures, which may find potential application in composite, photonic, tissue engineering, and micro-fluidic devices.","Made available in DSpace on 2015-09-25T20:43:31Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 3290438.pdf: 4139029 bytes, checksum: 7c4560609a7664b1915ec14238cd61c7 (MD5) Previous issue date: 2007","Embargo set by: Seth Robbins for item 83682 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","106 p.","Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2007."],"dc:identifier":["http://hdl.handle.net/2142/82401","(MiAaPQ)AAI3290438"],"dc:language":["eng"],"dc:subject":["Engineering, Biomedical"],"dc:title":["Direct-Write Assembly of Three-Dimensional Polyelectrolyte Scaffolds, Inorganic Hybrids, and Photonic Crystals"],"dc:type":["text"],"thesis:degree_discipline":["Chemical Engineering"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:26:18Z"}