使用qPlus传感器同时检测电解质溶液中的力和隧穿电流。

Simultaneous detection of force and tunneling current in electrolyte solution by using qPlus sensor.

作者信息

Kobayashi Naritaka, Hojo Masayuki, Baba Kengo, Sakuta Ken

机构信息

Department of Electronic Systems Engineering, The University of Shiga Prefecture, Hassaka-cho 2500, Hikone, Shiga 522-8533, Japan.

Department of Chemistry, Graduate School of Science and Engineering, Saitama University, Shimo-okubo 255, Sakura-ku, Saitama 338-8570, Japan.

出版信息

Rev Sci Instrum. 2023 Jul 1;94(7). doi: 10.1063/5.0152398.

DOI:10.1063/5.0152398

PMID:37504500

Abstract

We have developed a sensor for simultaneous measurement of atomic force microscopy (AFM) and scanning tunneling microscopy (STM) under liquid environments. The sensor, which is based on the qPlus sensor, is equipped with an insulated conductive tip. Owing to its electrical insulation except for the tip apex, the developed sensor enabled simultaneous detection of tip-sample interaction force and tunneling current, suppressing the Faradaic leakage current. As a fundamental demonstration, we performed simultaneous AFM/STM imaging in an electrolyte solution by using the developed sensor.

摘要

我们开发了一种用于在液体环境中同时测量原子力显微镜（AFM）和扫描隧道显微镜（STM）的传感器。该传感器基于qPlus传感器，配备有绝缘导电尖端。由于其除尖端顶点外的电绝缘特性，所开发的传感器能够同时检测尖端与样品之间的相互作用力和隧道电流，抑制了法拉第漏电流。作为一个基本演示，我们使用所开发的传感器在电解质溶液中进行了同步AFM/STM成像。