{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/108710"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/108710","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Microtransfer printing of elastomeric active composites","abstract":"Soft active polymeric composites are of great interest in many fields, including soft robotics, flexible electronics, and wearable technologies. This kind of 3D heterogeneous integration of different materials to form a functional membrane is achieved through a novel fabrication process that includes both photolithography and micro-transfer printing. Thus, an active elastomeric composite with a 4x4 array of individual, active stamps with a Lead Zirconate Titanate (PZT) actuator was developed to enable high throughput micro-transfer printing. This was achieved by introducing a multiplexed interconnection scheme as well as increasing robustness of the involved fabrication steps, enabling a locally active, high resolution stamp architecture with small footprint. The performance of the active elastomeric dense array stamp was validated with selective pickup and place micro-transfer printing experiments with closed-loop feedback control. However, such a flexible, active composite membrane’s uses can also be extended to other avenues like flexible sensor technologies. Towards this end, the PZT embedded elastomer was evaluated as a vibrational energy harvester. A miniaturized, broadband energy harvester working at low frequency is of great interest as a means of powering the growing field of small, wireless electronics. In this application, the PZT in the active elastomeric composite acts as a sensor. The work explores novel design schemes to increase the electrical output from the harvester by manipulating the buckling characteristics of both elastomer and PZT, which in turn increases the strain energy density of the PZT. Together, these studies highlight the functionality of PZT as both an actuator and a sensor; being the active element in the considered active elastomeric composite. Thus, the objective of this work is to explore the use of micro-transfer printing process to design and fabricate an elastomeric active composite with PZT and evaluate its performance as a transducer.","abstract_html":"Soft active polymeric composites are of great interest in many fields, including soft robotics, flexible electronics, and wearable technologies. This kind of 3D heterogeneous integration of different materials to form a functional membrane is achieved through a novel fabrication process that includes both photolithography and micro-transfer printing. Thus, an active elastomeric composite with a 4x4 array of individual, active stamps with a Lead Zirconate Titanate (PZT) actuator was developed to enable high throughput micro-transfer printing. This was achieved by introducing a multiplexed interconnection scheme as well as increasing robustness of the involved fabrication steps, enabling a locally active, high resolution stamp architecture with small footprint. The performance of the active elastomeric dense array stamp was validated with selective pickup and place micro-transfer printing experiments with closed-loop feedback control. However, such a flexible, active composite membrane’s uses can also be extended to other avenues like flexible sensor technologies. Towards this end, the PZT embedded elastomer was evaluated as a vibrational energy harvester. A miniaturized, broadband energy harvester working at low frequency is of great interest as a means of powering the growing field of small, wireless electronics. In this application, the PZT in the active elastomeric composite acts as a sensor. The work explores novel design schemes to increase the electrical output from the harvester by manipulating the buckling characteristics of both elastomer and PZT, which in turn increases the strain energy density of the PZT. Together, these studies highlight the functionality of PZT as both an actuator and a sensor; being the active element in the considered active elastomeric composite. Thus, the objective of this work is to explore the use of micro-transfer printing process to design and fabricate an elastomeric active composite with PZT and evaluate its performance as a transducer.","abstract_has_math":false,"creators":["Ismail, Nishana"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Mechanical Engineering","degree_department":null,"school":null,"contributors":["Ferreira, Placid","Kapoor, Shiv","Kim, Seok","Gong, Songbin"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2020,"date_issued":"2020-10-07T22:50:01Z","date_published":"2020-10-07T22:50:01Z","updated_at":"2026-07-22T22:24:48Z","subjects":["Micro-transfer printing","PZT actuator","active soft composite","piezoelectric energy harvester"],"languages":["en"],"rights":["Copyright 2020 Nishana Ismail"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/108710","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Ferreira, Placid","Kapoor, Shiv","Kim, Seok","Gong, Songbin"]},{"key":"dc:creator","label":"Author","values":["Ismail, Nishana"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2020-10-07T22:50:01Z","2022-10-07T22:50:13Z","2020-07-17","2020-08"]},{"key":"dc:type","label":"Dc Type","values":["text","Thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Mechanical 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":["Micro-transfer printing","PZT actuator","active soft composite","piezoelectric energy harvester"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2020 Nishana Ismail"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/108710"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Soft active polymeric composites are of great interest in many fields, including soft robotics, flexible electronics, and wearable technologies. This kind of 3D heterogeneous integration of different materials to form a functional membrane is achieved through a novel fabrication process that includes both photolithography and micro-transfer printing. Thus, an active elastomeric composite with a 4x4 array of individual, active stamps with a Lead Zirconate Titanate (PZT) actuator was developed to enable high throughput micro-transfer printing. This was achieved by introducing a multiplexed interconnection scheme as well as increasing robustness of the involved fabrication steps, enabling a locally active, high resolution stamp architecture with small footprint. The performance of the active elastomeric dense array stamp was validated with selective pickup and place micro-transfer printing experiments with closed-loop feedback control. However, such a flexible, active composite membrane’s uses can also be extended to other avenues like flexible sensor technologies. Towards this end, the PZT embedded elastomer was evaluated as a vibrational energy harvester. A miniaturized, broadband energy harvester working at low frequency is of great interest as a means of powering the growing field of small, wireless electronics. In this application, the PZT in the active elastomeric composite acts as a sensor. The work explores novel design schemes to increase the electrical output from the harvester by manipulating the buckling characteristics of both elastomer and PZT, which in turn increases the strain energy density of the PZT. Together, these studies highlight the functionality of PZT as both an actuator and a sensor; being the active element in the considered active elastomeric composite. Thus, the objective of this work is to explore the use of micro-transfer printing process to design and fabricate an elastomeric active composite with PZT and evaluate its performance as a transducer.","Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2022-08-01","The student, Nishana Ismail, accepted the attached license on 2020-07-15 at 20:00.","The student, Nishana Ismail, submitted this Dissertation for approval on 2020-07-16 at 12:36.","This Dissertation was approved for publication on 2020-07-17 at 13:04.","DSpace SAF Submission Ingestion Package generated from Vireo submission #15648 on 2020-10-02 at 15:51:08","Made available in DSpace on 2020-10-07T22:50:01Z (GMT). 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This kind of 3D heterogeneous integration of different materials to form a functional membrane is achieved through a novel fabrication process that includes both photolithography and micro-transfer printing. Thus, an active elastomeric composite with a 4x4 array of individual, active stamps with a Lead Zirconate Titanate (PZT) actuator was developed to enable high throughput micro-transfer printing. This was achieved by introducing a multiplexed interconnection scheme as well as increasing robustness of the involved fabrication steps, enabling a locally active, high resolution stamp architecture with small footprint. The performance of the active elastomeric dense array stamp was validated with selective pickup and place micro-transfer printing experiments with closed-loop feedback control. However, such a flexible, active composite membrane’s uses can also be extended to other avenues like flexible sensor technologies. Towards this end, the PZT embedded elastomer was evaluated as a vibrational energy harvester. A miniaturized, broadband energy harvester working at low frequency is of great interest as a means of powering the growing field of small, wireless electronics. In this application, the PZT in the active elastomeric composite acts as a sensor. The work explores novel design schemes to increase the electrical output from the harvester by manipulating the buckling characteristics of both elastomer and PZT, which in turn increases the strain energy density of the PZT. Together, these studies highlight the functionality of PZT as both an actuator and a sensor; being the active element in the considered active elastomeric composite. Thus, the objective of this work is to explore the use of micro-transfer printing process to design and fabricate an elastomeric active composite with PZT and evaluate its performance as a transducer.","Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2022-08-01","The student, Nishana Ismail, accepted the attached license on 2020-07-15 at 20:00.","The student, Nishana Ismail, submitted this Dissertation for approval on 2020-07-16 at 12:36.","This Dissertation was approved for publication on 2020-07-17 at 13:04.","DSpace SAF Submission Ingestion Package generated from Vireo submission #15648 on 2020-10-02 at 15:51:08","Made available in DSpace on 2020-10-07T22:50:01Z (GMT). No. of bitstreams: 2 ISMAIL-DISSERTATION-2020.pdf: 4723276 bytes, checksum: 43b82541d428bce6861a9f60cf558064 (MD5) LICENSE.txt: 4211 bytes, checksum: 5d26a6533d31fc9474c90a4000c32190 (MD5) Previous issue date: 2020-07-17","Embargo set by: Seth Robbins for item 116339 Lift date: 2022-10-07T22:50:13Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system","Author requested closed access (OA after 2yrs) in Vireo ETD system","Limited"],"dc:format":["application/pdf"],"dc:identifier":["http://hdl.handle.net/2142/108710"],"dc:language":["en"],"dc:rights":["Copyright 2020 Nishana Ismail"],"dc:subject":["Micro-transfer printing","PZT actuator","active soft composite","piezoelectric energy harvester"],"dc:title":["Microtransfer printing of elastomeric active composites"],"dc:type":["text","Thesis"],"thesis:degree_discipline":["Mechanical Engineering"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:24:48Z"}