Basic study on ultra low-power electron transport in compound semiconductor one-dimensional Brownian ratchet

电子布朗棘轮装置由随机运动的电子产生相干电流，其机制受生物系统中机械运动的分子水平过程的启发。本项目的目的是使用具有多个非对称栅极的gaas基纳米线来创建电子布朗棘轮装置，并展示当前的一代。我们在三维电势模拟的基础上设计并制作了该器件。我们成功地在室温下用闪烁棘轮操作产生了相干电流。这是基于半导体的布朗棘轮装置的第一个成就。

Electron Brownian ratchet device generates coherent current from randomly moving electrons, whose mechanism is inspired by the molecular level process of the mechanical motion in the biological systems. The purpose of this project is to create the electron Brownian ratchet device using a GaAs-based nanowire with multiple asymmetric gates and to demonstrate the current generation. We designed the device on the basis of 3D potential simulation and fabricated it. We succeeded in generation of coherent current by flashing ratchet operation at room temperature. This was the first achievement in the semiconductor-based Brownian ratchet devices.