{"id":{"repo_id":"njit","oai_identifier":"oai:digitalcommons.njit.edu:theses-1025"},"canonical_url":"https://search.dev.ndltd.org/etd/njit/oai:digitalcommons.njit.edu:theses-1025","repository":{"repo_id":"njit","name":"NJIT","base_url":"https://digitalcommons.njit.edu/do/oai/"},"display":{"title":"Memorizing chromic response to pressure","abstract":"Almost all appliances are prone to mechanical stress in one form or the other. An increasing dependence on machines in daily life calls for a need to increase their maintenance quality. Various materials, methods and configurations to observe mechanical pressure have been devised and this paper discusses one such technique. The use of gold nanoparticles in its one dimensional array causes plasmonic coupling between the nanoparticles, which when disrupted creates a plasmonic shift in its assembly. Such a film, when casted on a polymer with a known elastic limit, causes deformation by an application of stress. This forces the film to undergo plasmonic shift permanently and this is sensed with a change in colour. Because of plastic deformation, the colour remains intact even after the removal of pressure. Analysis of extinction profiles of nanoparticles have been carried out which demonstrates the proof of concept under a wide range of stresses. The colour change depends on the duration of application of stress and the value of stress itself. This is one of the earliest attempts to develop a colorimetric pressure-responsive film which memorizes the colour change by using gold nanoparticles. In this thesis, an attempt is made to investigate the feasibility of using silver nanoparticles in such sensors.","abstract_html":"Almost all appliances are prone to mechanical stress in one form or the other. An increasing dependence on machines in daily life calls for a need to increase their maintenance quality. Various materials, methods and configurations to observe mechanical pressure have been devised and this paper discusses one such technique. The use of gold nanoparticles in its one dimensional array causes plasmonic coupling between the nanoparticles, which when disrupted creates a plasmonic shift in its assembly. Such a film, when casted on a polymer with a known elastic limit, causes deformation by an application of stress. This forces the film to undergo plasmonic shift permanently and this is sensed with a change in colour. Because of plastic deformation, the colour remains intact even after the removal of pressure. Analysis of extinction profiles of nanoparticles have been carried out which demonstrates the proof of concept under a wide range of stresses. The colour change depends on the duration of application of stress and the value of stress itself. This is one of the earliest attempts to develop a colorimetric pressure-responsive film which memorizes the colour change by using gold nanoparticles. In this thesis, an attempt is made to investigate the feasibility of using silver nanoparticles in such sensors.","abstract_has_math":false,"creators":["Padh, Maulik Kiritkumar"],"institution":null,"degree_name":"Master of Science in Materials Science and Engineering - (M.S.)","degree_level":null,"degree_discipline":"Committee for the Interdisciplinary Program in Materials Science and Engineering","degree_department":null,"school":null,"contributors":["N. M. Ravindra","Michael Jaffe","S. Basuray"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2017,"date_issued":"2017-05-31T07:00:00Z","date_published":"2017-05-31T07:00:00Z","updated_at":"2026-07-24T03:22:07Z","subjects":["Mechanical stress","Chromic response","Materials Science and Engineering"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://digitalcommons.njit.edu/theses/26","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["N. M. Ravindra","Michael Jaffe","S. 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An increasing dependence on machines in daily life calls for a need to increase their maintenance quality. Various materials, methods and configurations to observe mechanical pressure have been devised and this paper discusses one such technique. The use of gold nanoparticles in its one dimensional array causes plasmonic coupling between the nanoparticles, which when disrupted creates a plasmonic shift in its assembly. Such a film, when casted on a polymer with a known elastic limit, causes deformation by an application of stress. This forces the film to undergo plasmonic shift permanently and this is sensed with a change in colour. Because of plastic deformation, the colour remains intact even after the removal of pressure. Analysis of extinction profiles of nanoparticles have been carried out which demonstrates the proof of concept under a wide range of stresses. The colour change depends on the duration of application of stress and the value of stress itself. This is one of the earliest attempts to develop a colorimetric pressure-responsive film which memorizes the colour change by using gold nanoparticles. In this thesis, an attempt is made to investigate the feasibility of using silver nanoparticles in such sensors."]},{"key":"dc:title","label":"Title","values":["Memorizing chromic response to pressure"]}]}],"canonical_facts":{"dc:contributor":["N. M. Ravindra","Michael Jaffe","S. Basuray"],"dc:creator":["Padh, Maulik Kiritkumar"],"dc:description.abstract":["Almost all appliances are prone to mechanical stress in one form or the other. An increasing dependence on machines in daily life calls for a need to increase their maintenance quality. Various materials, methods and configurations to observe mechanical pressure have been devised and this paper discusses one such technique. The use of gold nanoparticles in its one dimensional array causes plasmonic coupling between the nanoparticles, which when disrupted creates a plasmonic shift in its assembly. Such a film, when casted on a polymer with a known elastic limit, causes deformation by an application of stress. This forces the film to undergo plasmonic shift permanently and this is sensed with a change in colour. Because of plastic deformation, the colour remains intact even after the removal of pressure. Analysis of extinction profiles of nanoparticles have been carried out which demonstrates the proof of concept under a wide range of stresses. The colour change depends on the duration of application of stress and the value of stress itself. This is one of the earliest attempts to develop a colorimetric pressure-responsive film which memorizes the colour change by using gold nanoparticles. In this thesis, an attempt is made to investigate the feasibility of using silver nanoparticles in such sensors."],"dc:identifier":["https://digitalcommons.njit.edu/theses/26"],"dc:subject":["Mechanical stress","Chromic response","Materials Science and Engineering"],"dc:title":["Memorizing chromic response to pressure"],"dc:type":["Thesis"],"thesis:degree_discipline":["Committee for the Interdisciplinary Program in Materials Science and Engineering"],"thesis:degree_name":["Master of Science in Materials Science and Engineering - (M.S.)"]},"updated_at":"2026-07-24T03:22:07Z"}