{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,17]],"date-time":"2026-02-17T11:58:07Z","timestamp":1771329487945,"version":"3.50.1"},"reference-count":42,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2015,1,5]],"date-time":"2015-01-05T00:00:00Z","timestamp":1420416000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Ministry of Science and Technology, R.O.C.","award":["MOST 103-2221-E-182-061-MY3"],"award-info":[{"award-number":["MOST 103-2221-E-182-061-MY3"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>The piezoresistive characteristics of poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) pressure sensors with inter-digitated (IDE) and cross-point electrode (CPE) structures have been investigated. A small variation of the resistance of the pressure sensors with IDE without bottom indium-tin-oxide (b-ITO) film and with CPE structures was observed owing to the single carrier-conducting pathway. For the IDE pressure sensors with b-ITO, the piezoresistive characteristics at low and high pressure were similar to those of the pressure sensors with IDE without b-ITO and with CPE structures, respectively, leading to increased piezoresistive pressure sensitivity as the PEDOT:PSS film thickness decreased. A maximum sensitivity of more than 42 k\u03a9\/Pa was achieved. When the normal pressure was applied, the increased number of conducting points or the reduced distance between the PEDOT oligomers within the PEDOT:PSS film resulted in a decrease of the resistance. The piezoresistive pressure sensors with a single carrier-conducting pathway, i.e., IDE without b-ITO and CPE structures, exhibited a small relaxation time and a superior reversible operation, which can be advantageous for fast piezoresistive response applications.<\/jats:p>","DOI":"10.3390\/s150100818","type":"journal-article","created":{"date-parts":[[2015,1,5]],"date-time":"2015-01-05T10:17:08Z","timestamp":1420453028000},"page":"818-831","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":44,"title":["Characterization of Piezoresistive PEDOT:PSS Pressure Sensors with Inter-Digitated and Cross-Point Electrode Structures"],"prefix":"10.3390","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1308-3197","authenticated-orcid":false,"given":"Jer-Chyi","family":"Wang","sequence":"first","affiliation":[{"name":"Department of Electronic Engineering, Chang Gung University, Kweishan 33302, Taoyuan, Taiwan"},{"name":"Healthy and Aging Center, Chang Gung University, Kweishan 33302, Taoyuan, Taiwan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rajat","family":"Karmakar","sequence":"additional","affiliation":[{"name":"Department of Electronic Engineering, Chang Gung University, Kweishan 33302, Taoyuan, Taiwan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yu-Jen","family":"Lu","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Chang Gung Memorial Hospital, Kweishan 33305, Taoyuan, Taiwan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chiung-Yin","family":"Huang","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Chang Gung Memorial Hospital, Kweishan 33305, Taoyuan, Taiwan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kuo-Chen","family":"Wei","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Chang Gung Memorial Hospital, Kweishan 33305, Taoyuan, Taiwan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2015,1,5]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"551","DOI":"10.1016\/S0924-4247(97)01567-7","article-title":"A solid-state pressure-sensing microsystem for biomedical applications","volume":"62","author":"Chatzandroulis","year":"1997","journal-title":"Sens. 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