报告题目：Revealing Chemical and Physical Properties at the Nanoscale
报 告 人：Evgeniya Sheremet
报告时间：2024年5月18日下午18:00
报告地点：科技楼一楼明德学术报告厅
报告人简介：
Dr. Evgeniya Sheremet has been a Professor at the Research School of Chemical and Biomedical Sciences at Tomsk Polytechnic University, Russia, since 2017. Her academic journey began with studying Nanotechnology at Novosibirsk State Technical University. In 2015, she earned her Ph.D. in Experimental Physics from the Chemnitz University of Technology, where she focused her thesis on 'Micro- and nano-Raman characterization of organic and inorganic materials.' Following her doctorate, Prof. Sheremet continued her research in nanocharacterization as part of the Solid Surfaces Analysis group at TU Chemnitz. Her work involved employing finite element simulations of the electromagnetic field. At present, she collaborates with Prof. Rodriguez to lead the dynamic research group known as TERS-Team. Their primary focus is exploring nanomaterials, their modification, analysis, and applications.
简介内容：Nanomaterials are crucial in various fields, such as biomedicine, energy, composites, and catalysis. Understanding their properties at the nanoscale is essential for optimizing their applications. However, traditional bulk analysis methods lack detailed information on size, shape, and local chemical composition. In this presentation, we will explore the combination of scanning probe microscopy and optical spectroscopy techniques to obtain chemical insights at the nanoscale. We will begin with an in-depth discussion of tip-enhanced Raman spectroscopy (TERS), a powerful method based on Raman spectroscopy. TERS utilizes plasmonic nanoprobes integrated with atomic force microscopy (AFM) to achieve nanoscale resolution. We will delve into these methods’ working principles and limitations and showcase examples of their application in different nanomaterials. Additionally, we will introduce two other promising methods: nano-vis, which measures thermal expansion using AFM under modulated optical excitation and scanning electrochemical microscopy (SECM), which maps electrochemical activity using a nanoscale electrode tip. Collectively, these techniques offer unprecedented spatial resolution and provide valuable insights into nanomaterials’chemical and physical properties.
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