Choudhury Moinul H, Ciampi Simone, Yang Ying, Tavallaie Roya, Zhu Ying, Zarei Leila, Gonçales Vinicius R, Gooding J Justin
School of Chemistry , The University of New South Wales , Sydney , NSW 2052 , Australia . Email:
Australian Centre for NanoMedicine , The University of New South Wales , Sydney , NSW 2052 , Australia.
Chem Sci. 2015 Dec 1;6(12):6769-6776. doi: 10.1039/c5sc03011k. Epub 2015 Aug 28.
The requirement of a wire to each electrode is central to the design of any electronic device but can also be a major restriction. For example it entails space restrictions and rigid device architecture in multi-electrode devices. The finite space that is taken up by the array of electrical terminals and conductive pads also severely limits the achievable density of electrodes in the device. Here it is shown that a travelling light pointer can be used to form transient electrical connections anywhere on a monolithic semiconductor electrode that is fitted with a single peripheral electrical terminal. This is achieved using hydrogen terminated silicon electrodes that are modified with well-defined organic monolayers. It is shown that electrochemical information can be either read from or written onto these surfaces. Using this concept it is possible to form devices that are equivalent to a conventional electrode array but that do not require a predetermined architecture, and where each element of the array is temporally "connected" using light stimulus; a step change in capability for electrochemistry.
对每个电极都需要一根导线是任何电子设备设计的核心，但这也可能是一个主要限制。例如，在多电极设备中，这会带来空间限制和刚性的设备架构。电端子和导电焊盘阵列所占据的有限空间也严重限制了设备中可实现的电极密度。在此表明，一个移动的光指针可用于在配备单个外围电端子的单片半导体电极上的任何位置形成瞬态电连接。这是通过用明确的有机单层修饰的氢终止硅电极来实现的。结果表明，可以从这些表面读取电化学信息或向这些表面写入电化学信息。利用这一概念，可以形成与传统电极阵列等效但不需要预定架构的设备，并且阵列的每个元件通过光刺激在时间上“连接”；这是电化学能力的一个重大变化。
