Cosseddu Piero, Bonfiglio Annalisa, Neelgund Rohan, Tyrer Harry W
University of Cagliari Department of Electric and Electronic Engineering, Piazza d'Armi 09123 Cagliari, Italy.
Annu Int Conf IEEE Eng Med Biol Soc. 2009;2009:6151-4. doi: 10.1109/IEMBS.2009.5333476.
In this paper we propose totally flexible organic field effect transistors (OFETs) assembled on plastic films as sensors for mechanical variables. In the first part, mechanical sensors for pressure and bending detection are presented. A sharp and reversible sensitivity of the output current of the device to an elastic deformation induced by means of a mechanical stimulus on the device channel has been observed and suggested the idea of employing arrays of such sensors for detecting the deformation applied onto a planar surface. In the second part, the possibility of using similar devices for bio- and chemo-detection is described. By exploiting the properties of the basic structure, the device can be combined with any kind of substrate to detect for instance the pressure applied by people walking or standing on a functionalized carpet. This emerging technology seems to be promising for applications in the field of remote and non invasive monitoring of elderly and disabled people.
在本文中，我们提出将完全柔性的有机场效应晶体管（OFET）组装在塑料薄膜上，用作机械变量传感器。在第一部分中，介绍了用于压力和弯曲检测的机械传感器。已观察到该器件的输出电流对通过在器件通道上施加机械刺激引起的弹性变形具有敏锐且可逆的灵敏度，并由此提出了使用此类传感器阵列来检测施加在平面表面上的变形的想法。在第二部分中，描述了使用类似器件进行生物和化学检测的可能性。通过利用基本结构的特性，该器件可以与任何类型的基板相结合，例如检测人们行走或站立在功能化地毯上所施加的压力。这项新兴技术似乎在老年人和残疾人的远程和非侵入式监测领域具有应用前景。
