{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/114109"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/114109","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Exploration of crystallographic defects in topological insulator metamaterials","abstract":"Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2023-12-01","abstract_html":"Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2023-12-01","abstract_has_math":false,"creators":["Yamada, Sasha Seneca"],"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":["Bahl, Gaurav"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2022,"date_issued":"2022-04-29T21:58:41Z","date_published":"2022-04-29T21:58:41Z","updated_at":"2026-07-22T22:24:54Z","subjects":["Engineering"],"languages":["en","eng"],"rights":["Copyright 2021 Sasha Seneca Yamada"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/114109","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Bahl, Gaurav"]},{"key":"dc:creator","label":"Author","values":["Yamada, Sasha Seneca"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2022-04-29T21:58:41Z","2024-04-29T21:58:46Z","2021-12","2021-12-08"]},{"key":"dc:type","label":"Dc Type","values":["text","Thesis"]},{"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":["Engineering"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en","eng"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2021 Sasha Seneca Yamada"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/114109"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2023-12-01","The student, Sasha Yamada, accepted the attached license on 2021-12-08 at 13:02.","The student, Sasha Yamada, submitted this Thesis for approval on 2021-12-08 at 13:12.","This Thesis was approved for publication on 2021-12-08 at 14:27.","DSpace SAF Submission Ingestion Package generated from Vireo submission #17413 on 2022-04-29 at 16:10:41","Made available in DSpace on 2022-04-29T21:58:41Z (GMT). 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While initially thought to be unusual behavior, computational analysis of stoichiometric materials has revealed that over 27% of all materials in nature are topologically non-trivial. The prevalence of these materials provides further cause to study their behavior; however, it remains an experimental challenge to exercise precise control of materials at an atomic level. Fortunately, the topological properties of these materials are governed by the wave-nature of electrons which allows classical analogues to be constructed from metamaterials. Such metamaterials have been constructed using mechanical, electronic, and photonic platforms to study topological phenomena. This thesis describes the construction of circuit-based resonator arrays and their application to experimentally investigate how crystallographic defects interact with a material's topology. Specifically, partial dislocation defects in multipole topological insulators are considered. It is observed that these defects can trap robust bound states at their defect core, which provides a pathway to embed protected topological states deep within the bulk of a material."]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Exploration of crystallographic defects in topological insulator metamaterials"]}]}],"canonical_facts":{"dc:contributor":["Bahl, Gaurav"],"dc:creator":["Yamada, Sasha Seneca"],"dc:date":["2022-04-29T21:58:41Z","2024-04-29T21:58:46Z","2021-12","2021-12-08"],"dc:description":["Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2023-12-01","The student, Sasha Yamada, accepted the attached license on 2021-12-08 at 13:02.","The student, Sasha Yamada, submitted this Thesis for approval on 2021-12-08 at 13:12.","This Thesis was approved for publication on 2021-12-08 at 14:27.","DSpace SAF Submission Ingestion Package generated from Vireo submission #17413 on 2022-04-29 at 16:10:41","Made available in DSpace on 2022-04-29T21:58:41Z (GMT). No. of bitstreams: 3 YAMADA-THESIS-2021.pdf: 19421729 bytes, checksum: c6b74f39e846dbda82e7982ba7d82f05 (MD5) Yamada_MS_thesis_final.zip: 25802996 bytes, checksum: a78b3f5529f0540bdb7cef25b85f79cc (MD5) LICENSE.txt: 4209 bytes, checksum: a059ab53b348cc4abe9dc7d7b827b302 (MD5) Previous issue date: 2021-12-08","Embargo set by: Seth Robbins for item 123474 Lift date: 2024-04-29T21:58:46Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system","Author requested closed access (OA after 2yrs) in Vireo ETD system","Limited","Topological phases of matter have attracted the interest of physicists and engineers due to their novel transport properties and ability to protect robust states at material boundaries. These phases of matter occur when symmetries quantize and protect an invariant material property. While initially thought to be unusual behavior, computational analysis of stoichiometric materials has revealed that over 27% of all materials in nature are topologically non-trivial. The prevalence of these materials provides further cause to study their behavior; however, it remains an experimental challenge to exercise precise control of materials at an atomic level. Fortunately, the topological properties of these materials are governed by the wave-nature of electrons which allows classical analogues to be constructed from metamaterials. Such metamaterials have been constructed using mechanical, electronic, and photonic platforms to study topological phenomena. This thesis describes the construction of circuit-based resonator arrays and their application to experimentally investigate how crystallographic defects interact with a material's topology. Specifically, partial dislocation defects in multipole topological insulators are considered. It is observed that these defects can trap robust bound states at their defect core, which provides a pathway to embed protected topological states deep within the bulk of a material."],"dc:format":["application/pdf"],"dc:identifier":["http://hdl.handle.net/2142/114109"],"dc:language":["en","eng"],"dc:rights":["Copyright 2021 Sasha Seneca Yamada"],"dc:subject":["Engineering"],"dc:title":["Exploration of crystallographic defects in topological insulator metamaterials"],"dc:type":["text","Thesis"],"thesis:degree_discipline":["Electrical & Computer Engr"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["M.S."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:24:54Z"}