Development of a thermal micro-biosensor fabricated on a silicon chip

Bin Xie, Bengt Danielsson, Petronella Norberg, Fredrik Winquist, Ingemar Lundström

Research output: Contribution to journalArticlepeer-review

Abstract

In order to develop a sensitive, versatile and inexpensive portable instrument, a calorimetric micro-biosensor was designed and fabricated by etching part of the flow system into a silicon wafer. The utility of the device was tested using the enzymes, catalase and penicillinase. This sensor showed good reproducibility and linearity up to 100 mM. The system also showed higher sensitivity than the conventional enzyme thermistor (ET) when identical sample volumes (20 μl) were applied. Finally, future prospects in this field are discussed.

Original languageEnglish
Pages (from-to)127-130
Number of pages4
JournalSensors and Actuators B: Chemical
Volume6
Issue number1-3
DOIs
Publication statusPublished - 1992 Jan

Subject classification (UKÄ)

  • Analytical Chemistry

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