A large-area, flexible pressure sensor matrix with organic field-effect transistors for artificial skin applications
A large-area, flexible pressure sensor matrix with organic field-effect transistors for artificial skin applications
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DOI：
10.1073/pnas.0401918101
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发表时间：
2004-07-06
影响因子：
11.1
通讯作者：
Sakurai, T
中科院分区：
文献类型：
--
作者：
Someya, T;Sekitani, T;Sakurai, T
现在人们普遍认为，皮肤敏感性对于人类在日常生活中用于家务和娱乐目的的未来机器人将非常重要。尽管如此，与视觉和语音识别领域相比，压力识别领域的进展相对较小，主要是因为尚未获得具有大面积和机械柔性的良好人造“电子皮肤”。由数千个压力传感器组成的敏感皮肤的制造将需要灵活的开关矩阵，这不能用目前的硅基电子器件来实现。有机场效应晶体管可以替代这种传统的电子器件，因为有机电路具有固有的柔性，即使对于大面积也可能具有超低的成本。因此，有机晶体管和橡胶压力传感器的集成，这两者都可以通过低成本的加工技术，如大面积印刷技术生产，将提供一个理想的解决方案，实现一个实用的人工皮肤，其可行性已在本文中被证明。采用迁移率高达1.4cm（2）/V（.）的有机晶体管的柔性有源矩阵驱动器拍摄了压力图像。S.该设备是电气功能，即使它是围绕一个圆柱形杆与2毫米的半径。
It is now widely accepted that skin sensitivity will be very important for future robots used by humans in daily life for housekeeping and entertainment purposes. Despite this fact, relatively little progress has been made in the field of pressure recognition compared to the areas of sight and voice recognition, mainly because good artificial "electronic skin" with a large area and mechanical flexibility is not yet available. The fabrication of a sensitive skin consisting of thousands of pressure sensors would require a flexible switching matrix that cannot be realized with present silicon-based electronics. Organic field-effect transistors can substitute for such conventional electronics because organic circuits are inherently flexible and potentially ultralow in cost even for a large area. Thus, integration of organic transistors and rubber pressure sensors, both of which can be produced by low-cost processing technology such as large-area printing technology, will provide an ideal solution to realize a practical artificial skin, whose feasibility has been demonstrated in this paper. Pressure images have been taken by flexible active matrix drivers with organic transistors whose mobility reaches as high as 1.4 cm(2)/V(.)s. The device is electrically functional even when it is wrapped around a cylindrical bar with a 2-mm radius.