F. J. Romero, Inmaculada Ortiz-Gómez, A. Salinas, D. Morales, N. Rodríguez, A. Rivadeneyra
{"title":"Temperature sensing by Laser Reduced Graphene Oxide at different Laser Power Levels","authors":"F. J. Romero, Inmaculada Ortiz-Gómez, A. Salinas, D. Morales, N. Rodríguez, A. Rivadeneyra","doi":"10.1109/SENSORS47125.2020.9278645","DOIUrl":null,"url":null,"abstract":"Laser reduced graphene oxide (LrGO) has been considered as temperature sensor and its thermal sensitivity has been studied as a function of the reduction laser power level. To do so, LrGO squares of 1 cm2 on a flexible substrate have been fabricated. We found that for the lower tested power (50 mW), both the nominal resistance (about 500 Ω) and temperature sensitivity (around -0.41 Ω/°C) are about 1.5 times higher than the values obtained with an increase in power of 10 mW. The sensor also presented a very linear response (higher than 0.99) and low variation with relative humidity (5 Ω in the RH range from 20% to 90%).","PeriodicalId":338240,"journal":{"name":"2020 IEEE Sensors","volume":"20 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2020-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2020 IEEE Sensors","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/SENSORS47125.2020.9278645","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
Laser reduced graphene oxide (LrGO) has been considered as temperature sensor and its thermal sensitivity has been studied as a function of the reduction laser power level. To do so, LrGO squares of 1 cm2 on a flexible substrate have been fabricated. We found that for the lower tested power (50 mW), both the nominal resistance (about 500 Ω) and temperature sensitivity (around -0.41 Ω/°C) are about 1.5 times higher than the values obtained with an increase in power of 10 mW. The sensor also presented a very linear response (higher than 0.99) and low variation with relative humidity (5 Ω in the RH range from 20% to 90%).
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