Perdigão Luís M A, Saywell Alex
School of Physics and Astronomy, University of Nottingham, University Park, Nottingham NG7 2RD, United Kingdom.
Rev Sci Instrum. 2011 Jul;82(7):073704. doi: 10.1063/1.3600572.
The operation of a haptic device interfaced with a scanning tunneling microscope (STM) is presented here. The user moves the STM tip in three dimensions by means of a stylus attached to the haptic instrument. The tunneling current measured by the STM is converted to a vertical force, applied to the stylus and felt by the user, with the user being incorporated into the feedback loop that controls the tip-surface distance. A haptic-STM interface of this nature allows the user to feel atomic features on the surface and facilitates the tactile manipulation of the adsorbate/substrate system. The operation of this device is demonstrated via the room temperature STM imaging of C(60) molecules adsorbed on an Au(111) surface in ultra-high vacuum.
本文介绍了一种与扫描隧道显微镜（STM）相连的触觉设备的操作。用户通过连接到触觉仪器的触控笔在三个维度上移动STM探针。STM测量的隧道电流被转换为垂直力，施加到触控笔上并由用户感知，用户被纳入控制探针与表面距离的反馈回路中。这种性质的触觉-STM接口允许用户感受表面的原子特征，并便于对吸附质/衬底系统进行触觉操作。通过在超高真空下对吸附在Au(111)表面的C(60)分子进行室温STM成像，展示了该设备的操作。
