{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/78601"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/78601","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Smart-phone-based electrochemical sensor for environmental applications","abstract":"We demonstrated a mobile phone sensing platform, MoboSens, with integrated plug-n-play microelectronic ionic sensor that performs electrochemical measurement by using audio jack of a smart phone. This platform was used to measure nitrate concentration using a few microliter liquid samples on field along with providing geospatial map locations through a wireless network. This compact MoboSens platform (~65 gram), based on a smart phone, is able to detect nitrate concentration in water with a detection limit of 0.2 ppm within 1 minute. The nitrate ion detection on MoboSens platform is performed by a microfabricated microfluidic sensor utilizing a cyclic voltammetry based electrochemical process. The stability of the measurements was verified by performing the experiments under varying temperature, pH and ion interference conditions. The mobile phone app reports the quantitative nitrate sensing results along with user-input metadata. The results can be automatically saved on secure cloud servers or can be pushed on public social media, e.g., Twitter. Finally, the digital sensing information can be retrieved with geospatial information tagged on an internet map service, e.g., Bing Map, for public sharing and viewing. We tested this lab-on-a-chip mobile sensing platform for field water quality measurement and confirmed our mobile sensing results with other existing analytical testing methods.","abstract_html":"We demonstrated a mobile phone sensing platform, MoboSens, with integrated plug-n-play microelectronic ionic sensor that performs electrochemical measurement by using audio jack of a smart phone. This platform was used to measure nitrate concentration using a few microliter liquid samples on field along with providing geospatial map locations through a wireless network. This compact MoboSens platform (~65 gram), based on a smart phone, is able to detect nitrate concentration in water with a detection limit of 0.2 ppm within 1 minute. The nitrate ion detection on MoboSens platform is performed by a microfabricated microfluidic sensor utilizing a cyclic voltammetry based electrochemical process. The stability of the measurements was verified by performing the experiments under varying temperature, pH and ion interference conditions. The mobile phone app reports the quantitative nitrate sensing results along with user-input metadata. The results can be automatically saved on secure cloud servers or can be pushed on public social media, e.g., Twitter. Finally, the digital sensing information can be retrieved with geospatial information tagged on an internet map service, e.g., Bing Map, for public sharing and viewing. We tested this lab-on-a-chip mobile sensing platform for field water quality measurement and confirmed our mobile sensing results with other existing analytical testing methods.","abstract_has_math":false,"creators":["Wang, Xinhao"],"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":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2015,"date_issued":"2015-07-22T22:33:12Z","date_published":"2015-07-22T22:33:12Z","updated_at":"2026-07-22T22:26:12Z","subjects":["electrochemistry","impedance","smart-phone"],"languages":["en"],"rights":["Copyright 2015 Xinhao Wang"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/78601","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Wang, Xinhao"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2015-07-22T22:33:12Z","2017-07-23T09:15:19Z","2015-05","2015-04-13","2015-5"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"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":["electrochemistry","impedance","smart-phone"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2015 Xinhao Wang"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/78601"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["We demonstrated a mobile phone sensing platform, MoboSens, with integrated plug-n-play microelectronic ionic sensor that performs electrochemical measurement by using audio jack of a smart phone. This platform was used to measure nitrate concentration using a few microliter liquid samples on field along with providing geospatial map locations through a wireless network. This compact MoboSens platform (~65 gram), based on a smart phone, is able to detect nitrate concentration in water with a detection limit of 0.2 ppm within 1 minute. The nitrate ion detection on MoboSens platform is performed by a microfabricated microfluidic sensor utilizing a cyclic voltammetry based electrochemical process. The stability of the measurements was verified by performing the experiments under varying temperature, pH and ion interference conditions. The mobile phone app reports the quantitative nitrate sensing results along with user-input metadata. The results can be automatically saved on secure cloud servers or can be pushed on public social media, e.g., Twitter. Finally, the digital sensing information can be retrieved with geospatial information tagged on an internet map service, e.g., Bing Map, for public sharing and viewing. We tested this lab-on-a-chip mobile sensing platform for field water quality measurement and confirmed our mobile sensing results with other existing analytical testing methods.","Submission published under a 24 month embargo labeled 'U of I only', the embargo will last until 2017-05-01","The student, Xinhao Wang, accepted the attached license on 2015-04-06 at 20:48.","The student, Xinhao Wang, submitted this Thesis for approval on 2015-04-06 at 20:59.","This Thesis was approved for publication on 2015-04-13 at 17:03.","DSpace SAF Submission Ingestion Package generated from Vireo submission #7797 on 2015-07-22 at 14:17:38","Made available in DSpace on 2015-07-22T22:33:12Z (GMT). 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This platform was used to measure nitrate concentration using a few microliter liquid samples on field along with providing geospatial map locations through a wireless network. This compact MoboSens platform (~65 gram), based on a smart phone, is able to detect nitrate concentration in water with a detection limit of 0.2 ppm within 1 minute. The nitrate ion detection on MoboSens platform is performed by a microfabricated microfluidic sensor utilizing a cyclic voltammetry based electrochemical process. The stability of the measurements was verified by performing the experiments under varying temperature, pH and ion interference conditions. The mobile phone app reports the quantitative nitrate sensing results along with user-input metadata. The results can be automatically saved on secure cloud servers or can be pushed on public social media, e.g., Twitter. Finally, the digital sensing information can be retrieved with geospatial information tagged on an internet map service, e.g., Bing Map, for public sharing and viewing. We tested this lab-on-a-chip mobile sensing platform for field water quality measurement and confirmed our mobile sensing results with other existing analytical testing methods.","Submission published under a 24 month embargo labeled 'U of I only', the embargo will last until 2017-05-01","The student, Xinhao Wang, accepted the attached license on 2015-04-06 at 20:48.","The student, Xinhao Wang, submitted this Thesis for approval on 2015-04-06 at 20:59.","This Thesis was approved for publication on 2015-04-13 at 17:03.","DSpace SAF Submission Ingestion Package generated from Vireo submission #7797 on 2015-07-22 at 14:17:38","Made available in DSpace on 2015-07-22T22:33:12Z (GMT). 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