کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
747143 894500 2006 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Functionalized pyroelectric sensors for gas detection
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Functionalized pyroelectric sensors for gas detection
چکیده انگلیسی

A new calorimetric gas sensor based on functionalized integrated pyroelectric detector arrays was fabricated and tested. The advantages of this sensor are mainly based on its miniaturized design enabling a close-by arrangement of sensing and reference structures. The low heat capacity and high thermal isolation of the sensor elements enable in principle the application of integrated low power heating structures. Lead–zirconate–titanate (PZT)-based detector arrays were fabricated on silicon and mounted in test packages adapted to the printed circuit board (PCB) containing a simple readout circuitry. The performance of two different types of sensor surface functionalisations was studied. A polymer coating with polydimethylsiloxane (PDMS) was chosen to detect heptane absorption. A detection limit of 10 ppm heptane was found. Bacterial surface layers functionalized with small Pt clusters were applied to study catalytic oxidation of hydrogen. Within the investigated range from 0.5 up to 3.5 vol.% hydrogen, no saturation of the detection signal was observed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 119, Issue 1, 24 November 2006, Pages 255–261
نویسندگان
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