NSF Young Investigator

技术摘要：研究的重点是研究能级量子化、单电子荷电等量子现象对纳米结构中电子输运的影响。 提出了利用带有导电针尖的原子力显微镜（AFM）作为局部静电门。 施加到该尖端的电压将以亚微米分辨率影响传输。 用这种技术研究的一些系统是直径小于10纳米的金属和半导体簇的化学合成阵列。 这些研究将在 在 低温 其他应用包括局部磁共振测量，包括亚微米尺度上的磁共振成像。 非技术摘要：研究的重点是研究 单个电子对极小的原子大小的器件的性质的影响。 提出了利用带有导电针尖的原子力显微镜（AFM）作为局部静电门。 施加到该尖端的电压将影响传输 与 显微镜分辨率。 用这种技术研究的一些系统是化学合成的金属和半导体团簇阵列，直径为数十个原子。其他应用包括局部磁共振测量，可能是一千个原子的规模。

Technical abstract: The focus of the research is to study the effects of quantum phenomena such as energy level quantization and single- electron charging on electronic transport in nanostructures. It is proposed to utilize an atomic force microscope (AFM) with a conducting tip to serve as a local electrostatic gate. A voltage applied to this tip will influence transport with a submicron resolution. Some of the systems to be studied with such a technique are chemically synthesized arrays of metal and semiconductor clusters with diameters less than 10 nanometers. These studies will be carried out at cryogenic temperatures. Other applications include local magnetic resonance measurements including magnetic resonance imaging on a submicron scale. Non-technical abstract: The focus of the research is to study effects of a single electron on the properties of extremely small, atomic sized, devices. It is proposed to utilize an atomic force microscope (AFM) with a conducting tip to serve as a local electrostatic gate. A voltage applied to this tip will influence transport with a microscopic resolution. Some of the systems to be studied with such a technique are chemically synthesized arrays of metal and semiconductor clusters with diameters of tens of atoms. Other applications include local magnetic resonance measurements on scale of perhaps a thousand atoms.