کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7144958 | 1462069 | 2016 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Capacitive humidity and dew-point sensing: Influence of wetting of surface-attached polymer monolayers on the sensor response
ترجمه فارسی عنوان
رطوبت خازنی و حساسیت نقطه شبنم: تأثیر رطوبت یکپارچه پلیمرهای متصل به سطح بر روی حسگر پاسخ
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کلمات کلیدی
سنجش نقطه نقطه نقطه، پلیمر یکپارچه، رطوبت الکترودهای بین دیجیتال، سنجش خازنی،
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
Polymer monolayers with controlled hydrophilicity and thus varying surface wetting properties are photochemically attached to the surfaces of capacitive humidity/dew point sensors. In the first step, a self-assembled monolayer of a photoactive benzophenone silane is attached to the surface of an interdigitating electrode (IDE) array. During a brief UV-irradiation polymers ranging from a highly fluorinated polyacrylate, which is very strongly non-polar, to highly polar polymers such as poly-N-dimethylacrylamide, are attached to the sensor surfaces to form covalently attached polymer monolayers. The effect of the hydrophilicity/wettability of different monolayer coated surfaces on the response of the sensor against deposited water drops, which serve as a simple model for dew formation, is studied. Subsequently, the performance of the different surface-modified sensors in humidity and dew point measurements under different environmental conditions is investigated. A model is proposed as to how the water adsorption and surface wetting behavior controls the performance of the sensor.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 222, January 2016, Pages 87-94
Journal: Sensors and Actuators B: Chemical - Volume 222, January 2016, Pages 87-94
نویسندگان
Jan-Niklas Schönberg, Vitaliy Kondrashov, Anton Prokhorov, Jürgen Rühe,