Title of article :
Functionalized pyroelectric sensors for gas detection
Author/Authors :
Schreiter، نويسنده , , Matthias and Gabl، نويسنده , , Reinhard and Lerchner، نويسنده , , Johannes and Hohlfeld، نويسنده , , Christian and Delan، نويسنده , , Annekatrin and Wolf، نويسنده , , Gert and Blüher، نويسنده , , Anja and Katzschner، نويسنده , , Beate and Mertig، نويسنده , , Michael and Pompe، نويسنده , , Wolfgang، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2006
Pages :
7
From page :
255
To page :
261
Abstract :
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.
Keywords :
Pyroelectric detector array , Calorimetric sensor , Heptane absorption , S-layer , H2-detection
Journal title :
Sensors and Actuators B: Chemical
Serial Year :
2006
Journal title :
Sensors and Actuators B: Chemical
Record number :
1438503
Link To Document :
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