Frank Bunge, S. van den Driesche, A. Waite, U. Mirastschijski, M. Vellekoop
{"title":"Microfluidic oxygen sensor based on silica gels for longterm experiments","authors":"Frank Bunge, S. van den Driesche, A. Waite, U. Mirastschijski, M. Vellekoop","doi":"10.1109/MEMSYS.2018.8346783","DOIUrl":null,"url":null,"abstract":"Long-term measurements of dissolved oxygen in microfluidic systems are challenging because of the photo-oxidation of the required sensing film which consumes oxygen and because of the fluctuation of temperature that increases the uncertainty. We present a microfluidic chip made of glass and silicon with integrated phosphorescent elements composed from a matrix out of silica gel and an oxygen sensitive dye (PtTFPP). Our device has a 36 times lower oxygen consumption rate compared to conventional films, which uses an organic matrix. Furthermore, the influence of the temperature is eliminated by integrating a temperature sensor and heating elements on the chip.","PeriodicalId":400754,"journal":{"name":"2018 IEEE Micro Electro Mechanical Systems (MEMS)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2018 IEEE Micro Electro Mechanical Systems (MEMS)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/MEMSYS.2018.8346783","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
Long-term measurements of dissolved oxygen in microfluidic systems are challenging because of the photo-oxidation of the required sensing film which consumes oxygen and because of the fluctuation of temperature that increases the uncertainty. We present a microfluidic chip made of glass and silicon with integrated phosphorescent elements composed from a matrix out of silica gel and an oxygen sensitive dye (PtTFPP). Our device has a 36 times lower oxygen consumption rate compared to conventional films, which uses an organic matrix. Furthermore, the influence of the temperature is eliminated by integrating a temperature sensor and heating elements on the chip.
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