{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/31956"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/31956","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Development of a plasmon resonance enhanced optical trap for characterisation of single metal nanoparticle","abstract":"The goal of this thesis is to develop an experimental method for constructing a plasmon resonance based gold nanorod trapping platform and suggest methods for characterizing a trapped single nanoparticle. While there are published methods that emphasize on building up an optical trapping setup or trap single gold nanorod using high power lasers, none were found that suggests on constructing a plasmon resonance based optical trapping setup which has the sole purpose of tweezing and characterizing a particular species (aspect ratio) of gold nanorod. Theoretical aspects of plasmon resonance and their contribution in trapping of gold nanorod is studied in detail. Characterisation properties discussed in this thesis include trapping strength, pattern of backscattered light and extinction spectrum. The necessary theories and corresponding equations for trapping force and extinction spectrum estimation are presented including all the assumptions and constraints that were applied. Moreover, the results from these characterisation methods are analysed in order to differentiate between a trapped gold nanorod and a dielectric microsphere. Matlab and LabView codes used in the characterisation experiments are presented at the end of the thesis as attached m-files and vi-files, respectively.","abstract_html":"The goal of this thesis is to develop an experimental method for constructing a plasmon resonance based gold nanorod trapping platform and suggest methods for characterizing a trapped single nanoparticle. While there are published methods that emphasize on building up an optical trapping setup or trap single gold nanorod using high power lasers, none were found that suggests on constructing a plasmon resonance based optical trapping setup which has the sole purpose of tweezing and characterizing a particular species (aspect ratio) of gold nanorod. Theoretical aspects of plasmon resonance and their contribution in trapping of gold nanorod is studied in detail. Characterisation properties discussed in this thesis include trapping strength, pattern of backscattered light and extinction spectrum. The necessary theories and corresponding equations for trapping force and extinction spectrum estimation are presented including all the assumptions and constraints that were applied. Moreover, the results from these characterisation methods are analysed in order to differentiate between a trapped gold nanorod and a dielectric microsphere. Matlab and LabView codes used in the characterisation experiments are presented at the end of the thesis as attached m-files and vi-files, respectively.","abstract_has_math":false,"creators":["Zaman, Mehdi"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Mechanical Engineering","degree_department":null,"school":null,"contributors":["Toussaint, Kimani C."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2012,"date_issued":"2012-06-27T21:21:22Z","date_published":"2012-06-27T21:21:22Z","updated_at":"2026-07-22T22:25:30Z","subjects":["optical tweezers","optical trapping","plasmon resonance","stiffness measurement"],"languages":["en"],"rights":["Copyright 2012 Mehdi Zaman"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/31956","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Toussaint, Kimani C."]},{"key":"dc:creator","label":"Author","values":["Zaman, Mehdi"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2012-06-27T21:21:22Z","2014-06-28T10:00:21Z","2012-05"]},{"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":["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":["optical tweezers","optical trapping","plasmon resonance","stiffness measurement"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2012 Mehdi Zaman"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/31956"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["The goal of this thesis is to develop an experimental method for constructing a plasmon resonance based gold nanorod trapping platform and suggest methods for characterizing a trapped single nanoparticle. 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While there are published methods that emphasize on building up an optical trapping setup or trap single gold nanorod using high power lasers, none were found that suggests on constructing a plasmon resonance based optical trapping setup which has the sole purpose of tweezing and characterizing a particular species (aspect ratio) of gold nanorod. Theoretical aspects of plasmon resonance and their contribution in trapping of gold nanorod is studied in detail. Characterisation properties discussed in this thesis include trapping strength, pattern of backscattered light and extinction spectrum. The necessary theories and corresponding equations for trapping force and extinction spectrum estimation are presented including all the assumptions and constraints that were applied. Moreover, the results from these characterisation methods are analysed in order to differentiate between a trapped gold nanorod and a dielectric microsphere. 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