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Low-Cost Chemical Sensing Platform With Organic Polymer Functionalization




TekijätKaisti M, Knuutila A, Boeva Z, Kvarnstrom C, Levon K

KustantajaIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC

Julkaisuvuosi2015

JournalIEEE Electron Device Letters

Tietokannassa oleva lehden nimiIEEE ELECTRON DEVICE LETTERS

Lehden akronyymiIEEE ELECTR DEVICE L

Vuosikerta36

Numero8

Aloitussivu844

Lopetussivu846

Sivujen määrä3

ISSN0741-3106

DOIhttps://doi.org/10.1109/LED.2015.2445371

Rinnakkaistallenteen osoitehttps://research.utu.fi/converis/portal/detail/Publication/3861030


Tiivistelmä

The characteristics of an inexpensive transistor-based chemical sensing platforms with organic polymer, polyaniline (PANI), was investigated in terms of tranconductance, pH sensitivity, and drift properties. The platform consists of a printed circuit board manufactured in a standard manufacturing process and commercial discrete MOSFETs. The platform is funtionalized with PANI by a simple low-cost drop casting. The platform shows low average pH sensitivity of 9.1 mV/pH in the range 4-7 where physiological recognition events take place and as such is a promising candidate for intrinsic charge-based biosensing since PANI is able to directly interact with charged macromolecules such as proteins and DNA. In addition, the PANI functionalized sensors show low nonmonotonic drift and only slightly reduced transconductance compared with the MOSFET counterpart.


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