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Study of the electro-responsiveness and surface texturing of PEDOT:PSS for smart MEMS interface applications

机译:用于智能MEMS接口应用的PEDOT:PSS的电响应性和表面纹理研究

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In this study, we characterize the impact of electrical stimuli on the wettability and volume of thin films of poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) in aqueous solution. At low voltage (<1V), we demonstrate a 20° to 30° modulation of the contact angle controlled by an electrowetting phenomenon and not by electrochemical reactions like usually seen for other common conducting polymers. Consequently, the contact angle range can be tuned by chemical functionalization of its interface. Besides, we show that the polymer presents a small swelling (<4%) when the potential is turned from 0.2V to −0.8V. Finally, we develop fabrication processes to texture the PEDOT:PSS surface at microscale and nanoscale.
机译:在这项研究中,我们表征了电刺激对水溶液中聚(3,4-乙撑二氧噻吩)聚苯乙烯磺酸盐(PEDOT:PSS)薄膜的润湿性和体积的影响。在低电压(<1V)下,我们证明了接触角的20°至30°调制是由电润湿现象控制的,而不是像其他常见导电聚合物通常所见的那样由电化学反应控制的。因此,接触角范围可以通过其界面的化学官能化来调节。此外,我们表明,当电势从0.2V变为-0.8V时,聚合物呈现出较小的溶胀(<4%)。最后,我们开发了制造工艺,以在微观和纳米尺度上对PEDOT:PSS表面进行纹理处理。

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