Abstract
Two methods to fabricate large area flexible conductive polymers with applications in sensor technology for human information input and output are discussed. In the first method, parylene peel-off is discussed and devices fabricated by this process such as microfabricated touch sensors, electrochromic pixel displays and biosensors are demonstrated. For example, a PEDOT:PSS-based strain-sensor array used as a transparent touch screen sustained bending for 1000 repetitions with a bending radius of 5mm, proving it to be useful for flexible displays. Moreover its optical, mechanical and electrical properties were compared with an ITO film. Similarly, the sensitivity of an electrochemical glucose sensor proved to be 100 times better than that of a conventional sensor. In the second method, a novel manufacturing process to fabricate meter scale MEMS device is discussed, which involves continuous reel-to-reel die coating on fiber substrates which are then woven with an automatic weaving machine into the fabric. The die is composed of a PEDOT:PSS and UV- adhesive.
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