Institut für Bio- und Nanosysteme 3, Forschungszentrum Jülich, 52425 Jülich, Germany.
Phys Rev Lett. 2010 Aug 20;105(8):086103. doi: 10.1103/PhysRevLett.105.086103.
A scanning tunneling microscope (STM) has been equipped with a nanoscale force sensor and signal transducer composed of a single D2 molecule that is confined in the STM junction. The uncalibrated sensor is used to obtain ultrahigh geometric image resolution of a complex organic molecule adsorbed on a noble metal surface. By means of conductance-distance spectroscopy and corresponding density functional calculations the mechanism of the sensor and transducer is identified. It probes the short-range Pauli repulsion and converts this signal into variations of the junction conductance.
扫描隧道显微镜 (STM) 配备了纳米级力传感器和信号转换器，该转换器由单个 D2 分子组成，该分子被限制在 STM 结中。该未经校准的传感器用于获得吸附在贵金属表面的复杂有机分子的超高几何图像分辨率。通过电导-距离谱学和相应的密度泛函计算，确定了传感器和换能器的工作机制。它探测短程 Pauli 排斥，并将此信号转换为结电导率的变化。
