Conformable, flexible, large-area networks of pressure and thermal sensors with organic transistor active matrixes
Conformable, flexible, large-area networks of pressure and thermal sensors with organic transistor active matrixes
复制标题
DOI：
10.1073/pnas.0502392102
复制
发表时间：
2005-08-30
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;Kato, Y;Sakurai, T
皮肤般的敏感度，即识别触觉信息的能力，将是未来几代机器人的基本特征，使它们能够在非结构化环境中操作。最近开发的由有机晶体管制成的大面积压力传感器已被提出用于电子人造皮肤(E-Skin)。这些传感器可以弯曲到2毫米的半径，这个尺寸足够小，可以制造出人类大小的机器人手指。然而，天然的人类皮肤比目前展示的基于晶体管的仿制品要复杂得多。它还执行其他功能，包括热传感。此外，如果没有一致性，E-Skin在三维表面上的应用是不可能的。在这项工作中，我们成功地开发了基于有机半导体的可整合的、灵活的、大面积的温度和压力传感器网络。以有机晶体管为基础的电子电路的塑料薄膜被加工成网状结构，这使得E-Skin薄膜可以延伸25%。将网状压力传感器矩阵附着在鸡蛋表面，成功地获得了压力图像。然后，用有机半导体开发了一个类似的热传感器网络。其次，给出了压力传感器和温度传感器在表面的可能实现，并通过层叠式传感器网络同时获得了压力和温度的分布。
Skin-like sensitivity, or the capability to recognize tactile information, will be an essential feature of future generations of robots, enabling them to operate in unstructured environments. Recently developed large-area pressure sensors made with organic transistors have been proposed for electronic artificial skin (E-skin) applications. These sensors are bendable down to a 2-mm radius, a size that is sufficiently small for the fabrication of human-sized robot fingers. Natural human skin, however, is far more complex than the transistor-based imitations demonstrated so far. It performs other functions, including thermal sensing. Furthermore, without conformability, the application of E-skin on three-dimensional surfaces is impossible. In this work, we have successfully developed conformable, flexible, large-area networks of thermal and pressure sensors based on an organic semiconductor. A plastic film with organic transistor-based electronic circuits is processed to form a net-shaped structure, which allows the E-skin films to be extended by 25%. The net-shaped pressure sensor matrix was attached to the surface of an egg, and pressure images were successfully obtained in this configuration. Then, a similar network of thermal sensors was developed with organic semiconductors. Next, the possible implementation of both pressure and thermal sensors on the surfaces is presented, and, by means of laminated sensor networks, the distributions of pressure and temperature are simultaneously obtained.