Scanning probe microscopy for fundamental studies in nanoscience

用于纳米科学基础研究的扫描探针显微镜

• 批准号: 155843-2011
• 负责人: Grutter, Peter
• 金额: $ 7.14万
• 依托单位: McGill University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=569497
• 关键词: Scanning; probe; microscopy; fundamental; studies

My research is in the field of Nanoscience and Technology - understanding, manipulating and characterizing the properties of matter on a nanometer scale. In the past few years we have developed an impressive array of scanned probe microscopes that are the perfect tools to experimentally study nanaoscale systems. I want to obtain insights into fundamental properties of material on length scales not easily accessible by other techniques. An outcome of this research is that one can then better understand limits of present day technology and possibly ways of overcoming them. My first objective is to investigate the electrical conduction of individual molecules such as C60. The comparison of currently available experimental data with theoretical modelling is very difficult, as the atomic structure of the contact leads is of utmost importance, but usually not controlled. We are in a world-wide unique position to resolve these issues, as we have developed instrumentation allowing contact leads to be characterized and manipulated on an atomic scale. A second objective is to construct and study atomically defined three terminal devices. Three terminal devices allow more control over the active energy levels via electric gating effects. This goal will be reached by using various discoveries and molecule localization methods we have recently developed. A third objective is to perform energy level spectroscopy on quantum dots and gold nano particles using our recently developed dissipation and force microscopy techniques. We will investigate spins, control of coupling between dots and assembly of dots using DNA. Qdots are a possible qubit implementation for solid-state quantum computation. Finally, our fourth objective is to study what determines the magnetic field at which an individual single domain ferromagnetic particle switches orientation. We will combine magnetic force with transmission electron microscopy on microfabricated submicron magnets on SiN membranes to achieve this.

我的研究领域是纳米科学与技术——在纳米尺度上理解、操纵和表征物质的特性。在过去的几年中，我们开发了一系列令人印象深刻的扫描探针显微镜，它们是实验研究纳米级系统的完美工具。我想深入了解其他技术无法轻易获得的长度尺度上材料的基本特性。这项研究的结果是，人们可以更好地理解当今技术的局限性以及克服这些局限性的可能方法。 我的第一个目标是研究单个分子（例如 C60）的电导率。将当前可用的实验数据与理论模型进行比较非常困难，因为接触引线的原子结构至关重要，但通常不受控制。我们在解决这些问题方面处于世界范围内的独特地位，因为我们开发了能够在原子尺度上表征和操纵接触引线的仪器。第二个目标是构建和研究原子定义的三个终端设备。三个终端设备可以通过电门控效应更好地控制有源能量水平。这个目标将通过使用我们最近开发的各种发现和分子定位方法来实现。 第三个目标是使用我们最近开发的耗散和力显微镜技术对量子点和金纳米颗粒进行能级光谱分析。我们将研究自旋、点之间耦合的控制以及使用 DNA 进行点组装。 Qdot 是固态量子计算的一种可能的量子位实现。最后，我们的第四个目标是研究决定单个单畴铁磁粒子切换方向的磁场的因素。我们将磁力与透射电子显微镜相结合，在 SiN 膜上微制造的亚微米磁体上实现这一目标。