{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/82863"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/82863","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Comb Polymer Architecture and Particle Size Effects on the Behavior of Biphasic Nanoparticle Inks for Direct -Write Assembly","abstract":"Finally, the printing behavior of biphasic nanoparticle inks is investigated as a function of attractive-to-repulsive volume fraction and particle size ratio. Ink flow behavior is characterized by extrusion measurements, which reveals that the suspension viscosity, and, hence, pressure drop within micronozzles decrease as either the fraction or size of repulsive particles increases. We find that the shape retention of spanning filaments is improved by having a larger fraction of repulsive particles of smaller mean size, since this enhances the initial modulus recovery immediately after shear deformation. Biphasic inks composed of both identical and different mean particle sizes exhibit excellent flowability through fine nozzles compared to purely attractive inks, enabling fine-scale printing. These observations provide guidelines for optimizing the composition of biphasic inks for direct-write assembly of fine-scale, 3D structures.","abstract_html":"Finally, the printing behavior of biphasic nanoparticle inks is investigated as a function of attractive-to-repulsive volume fraction and particle size ratio. Ink flow behavior is characterized by extrusion measurements, which reveals that the suspension viscosity, and, hence, pressure drop within micronozzles decrease as either the fraction or size of repulsive particles increases. We find that the shape retention of spanning filaments is improved by having a larger fraction of repulsive particles of smaller mean size, since this enhances the initial modulus recovery immediately after shear deformation. Biphasic inks composed of both identical and different mean particle sizes exhibit excellent flowability through fine nozzles compared to purely attractive inks, enabling fine-scale printing. These observations provide guidelines for optimizing the composition of biphasic inks for direct-write assembly of fine-scale, 3D structures.","abstract_has_math":false,"creators":["Yoshikawa, Jun"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Materials Science and Engineering","degree_department":null,"school":null,"contributors":["Lewis, Jennifer A."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2015,"date_issued":"2015-09-25T20:53:23Z","date_published":"2015-09-25T20:53:23Z","updated_at":"2026-07-22T22:26:20Z","subjects":["Engineering, Materials Science"],"languages":["eng"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["(MiAaPQ)AAI3395556"],"render_values":[{"text":"(MiAaPQ)AAI3395556","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/82863","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":["Yoshikawa, Jun"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2015-09-25T20:53:23Z","10000-01-01","2009"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Materials Science and 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, Materials Science"]}]},{"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/2142/82863","(MiAaPQ)AAI3395556"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Finally, the printing behavior of biphasic nanoparticle inks is investigated as a function of attractive-to-repulsive volume fraction and particle size ratio. Ink flow behavior is characterized by extrusion measurements, which reveals that the suspension viscosity, and, hence, pressure drop within micronozzles decrease as either the fraction or size of repulsive particles increases. We find that the shape retention of spanning filaments is improved by having a larger fraction of repulsive particles of smaller mean size, since this enhances the initial modulus recovery immediately after shear deformation. Biphasic inks composed of both identical and different mean particle sizes exhibit excellent flowability through fine nozzles compared to purely attractive inks, enabling fine-scale printing. These observations provide guidelines for optimizing the composition of biphasic inks for direct-write assembly of fine-scale, 3D structures.","Made available in DSpace on 2015-09-25T20:53:23Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 3395556.pdf: 4879487 bytes, checksum: de5411eafd54fb8179f164b3c41834b6 (MD5) Previous issue date: 2009","Embargo set by: Seth Robbins for item 84144 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","120 p.","Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2009."]},{"key":"dc:title","label":"Title","values":["Comb Polymer Architecture and Particle Size Effects on the Behavior of Biphasic Nanoparticle Inks for Direct -Write Assembly"]}]}],"canonical_facts":{"dc:contributor":["Lewis, Jennifer A."],"dc:creator":["Yoshikawa, Jun"],"dc:date":["2015-09-25T20:53:23Z","10000-01-01","2009"],"dc:description":["Finally, the printing behavior of biphasic nanoparticle inks is investigated as a function of attractive-to-repulsive volume fraction and particle size ratio. Ink flow behavior is characterized by extrusion measurements, which reveals that the suspension viscosity, and, hence, pressure drop within micronozzles decrease as either the fraction or size of repulsive particles increases. We find that the shape retention of spanning filaments is improved by having a larger fraction of repulsive particles of smaller mean size, since this enhances the initial modulus recovery immediately after shear deformation. Biphasic inks composed of both identical and different mean particle sizes exhibit excellent flowability through fine nozzles compared to purely attractive inks, enabling fine-scale printing. These observations provide guidelines for optimizing the composition of biphasic inks for direct-write assembly of fine-scale, 3D structures.","Made available in DSpace on 2015-09-25T20:53:23Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 3395556.pdf: 4879487 bytes, checksum: de5411eafd54fb8179f164b3c41834b6 (MD5) Previous issue date: 2009","Embargo set by: Seth Robbins for item 84144 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","120 p.","Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2009."],"dc:identifier":["http://hdl.handle.net/2142/82863","(MiAaPQ)AAI3395556"],"dc:language":["eng"],"dc:subject":["Engineering, Materials Science"],"dc:title":["Comb Polymer Architecture and Particle Size Effects on the Behavior of Biphasic Nanoparticle Inks for Direct -Write Assembly"],"dc:type":["text"],"thesis:degree_discipline":["Materials Science and Engineering"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:26:20Z"}