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Mateiu, Ramona Valentina
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Publications (7/7 displayed)
- 2021Impedance characterization of biocompatible hydrogel suitable for biomimetic lipid membrane applicationscitations
- 2018Green synthesis of gold and silver nanoparticles from Cannabis sativa (industrial hemp) and their capacity for biofilm inhibitioncitations
- 2017Electrical breakdown phenomena of dielectric elastomerscitations
- 2010Mapping boron in silicon solar cells using electron energy-loss spectroscopy
- 2010Mapping boron in silicon solar cells using electron energy-loss spectroscopy
- 2007Reliability of poly 3,4-ethylenedioxythiophene strain gaugecitations
- 2003Soldering of Nanotubes onto Microelectrodescitations
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article
Reliability of poly 3,4-ethylenedioxythiophene strain gauge
Abstract
We report on the experimentally observed reliability of the piezoresistive effect in strained poly 3,4-ethylenedioxythiophene (PEDT). PEDT is an intrinsic conductive polymer which can be patterned by conventional Cleanroom processing, and thus presents a promising material for all-polymer Microsystems. The measurements are made on microfabricated test chips with PEDT resistors patterned by conventional UV-lithography and reactive ion etching (RIE). We determine a gauge factor of 3.41 ± 0.42 for the strained PEDT and we see an increase in resistivity from 1.98 · 104 X m to 2.22 · 104 X m when the polymer is immersed in water for 30 min. The resistivity continues to increase to 2.66 · 104 X m when the resistor is thermally dried due to interactions with oxygen from the ambient. We measure the PEDT sheet resistance over a period of four weeks and see small fluctuations caused by humidity variations. 2007 Elsevier B.V. All rights reserved.