Qiwei Hu

Project

Interfaces, charge-transfer and non-adiabatic processes and their exploitation in a frequency-tunable tribogenerator

Subproject

Characterizing triboelectric interfaces with Atomic Force Microscopy (AFM) based methods
The triboelectric effect describes the following phenomenon: when two dissimilar contacting materials move in opposite directions, the difference in their electron-affinities causes charges to separate. However, for insulators, it is unclear whether electrons, ions or material fragments transfer during contact. In my research, I utilize Atomic Force Microscopy (AFM) with Kelvin Probe method to analyze the topography and surface potential of triboelectric interfaces before and after contacting. This approach will provide a better understanding of the relation between surface properties and triboelectric behavior.

First supervisor

Dr. Bizan Balzer

Publications in livMatS

• A block copolymer templated approach for the preparation of nanoporous polymer structures and cellulose fiber hybrids by ozone treatment*
  Gemmer, L., Hu, Q., Niebuur, B. J., Kraus, T., Balzer, B. N., & Gallei, M. (2022). A block copolymer templated approach for the preparation of nanoporous polymer structures and cellulose fiber hybrids by ozone treatment. Polymer Chemistry, 13(27), 4028-4046. doi: 10.1039/D2PY00562J
• Nanoporous Block Copolymer Membranes with Enhanced Solvent Resistance Via UV-Mediated Cross-Linking Strategies*
  Frieß, F. V., Hu, Q., Mayer, J., Gemmer, L., Presser, V., Balzer, B. N., & Gallei, M. (2022). Nanoporous Block Copolymer Membranes with Enhanced Solvent Resistance via UV‐Mediated Cross‐Linking Strategies. Macromolecular Rapid Communications, 43(3), 2100632. doi: 10.1002/marc.202100632
  
  
  * Funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany's Excellence Strategy – EXC-2193/1 – 390951807