Scanning Force Microscope

扫描力显微镜

• 批准号: 460926641
• 金额: --
• 依托单位: Technische Universität Clausthal
• 依托单位国家: 德国
• 项目类别: Major Research Instrumentation
• 财政年份: 2021
• 资助国家: 德国
• 起止时间: 2020-12-31 至 无数据
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/460926641?language=en
• 关键词: Scanning; Force; Microscope

The Institute of Physical Chemistry at Clausthal University of Technology has its research focus on soft matter at interfaces. More specific targets are the structure and the viscoelastic properties of the samples (nanoparticles, polymer adsorbates, vesicles, dendri-mers, self-organized mono-layers, ...). This research shall be supported by a modern atomic force microscope, which works in liquids under controlled of the electrical potential, which provides access to the viscoelastic properties of the sample, and which can be combined with other methods of interface analysis. The combinability with other instruments is particularly relevant for the quartz crystal microbal-ance. Atomic force microscopy is to be performed on samples on a resonator surface while the resonator is vibrating. The separation of time scales (fast movement of the substrate, slower movement of the cantilever) allows for novel approaches to the dynamics of the surfaces under study. This concerns viscoelasticity, (high-frequency) tribology, the influence of electrical po-tentials and (high-frequency) hydrodynamics. Using ordinary tips, imaging (with novel contrast mechanisms) will be the main target. The use of spheres ("colloidal probe configuration") shall enable new fundamental-research-oriented experiments. A further focus of the institute is on film formation from latex dispersions. AFM measurements shall be performed in-situ on drying films. For adhesives, a correlation between (nonlinear) mi-cromechanics (fibrillation) and macroscopic material properties shall be studied. The Institute of Physical Chemistry is extensively involved in cooperations with institutes in the immediate vicinity (chemistry, physics, materials science) as well as with other members of the university and external users. Exemplary research goals are the piezoelectricity of nanoparticles of polyvinylidene fluoride, the structure of graphene-modified electrodes in the context of organic electro-synthesis, the topography of glasses under mechanical stress near the tip of cracks, the local piezoelectricity of complex oxides for high temperature applications, and the local topography “engineered artificial minerals”.The device is to be run and supervised by the members of the institute’s permanent staff. The various cooperations can be carried out under competent guidance. In this way, the instrument shall strengthen the coherence of research at the university.

克劳斯塔尔科技大学物理化学研究所的研究重点是界面上的软物质。更具体的目标是样品的结构和粘弹性特性(纳米颗粒、聚合物吸附物、小泡、树枝状单体、自组织单层等)。这项研究应得到现代原子力显微镜的支持，该显微镜在电势的控制下在液体中工作，提供对样品粘弹性性质的访问，并可与其他界面分析方法相结合。与其他仪器的可配合性尤其与石英晶体微天平有关。原子力显微镜是在谐振器振动时对谐振器表面上的样品进行的。时间尺度的分离(衬底的快速移动，悬臂的较慢移动)允许采用新的方法来研究所研究的表面的动力学。这涉及到粘弹性、(高频)摩擦学、电势的影响和(高频)流体动力学。使用普通的TIPS，成像(具有新的对比度机制)将成为主要目标。球体(“胶体探头结构”)的使用将使新的以基础研究为导向的实验成为可能。该研究所的另一个重点是乳胶分散体的成膜。原子力显微镜测量应在干燥的薄膜上原位进行。对于胶粘剂，应研究(非线性)细观力学(原纤化)与宏观材料性能之间的关系。物理化学研究所广泛参与与邻近研究所(化学、物理、材料科学)以及大学其他成员和外部用户的合作。示范的研究目标是聚偏氟乙烯纳米颗粒的压电性，有机电合成背景下的石墨烯修饰电极的结构，裂隙尖端机械应力下玻璃的形貌，高温应用中复合氧化物的局部压电性，以及局部形貌的“工程人造矿物”。该设备将由研究所的长期工作人员操作和监督。各种合作都可以在称职的指导下进行。这样，该仪器将加强大学研究的连贯性。