The triboelectric effect describes the phenomenon that when two dissimilar contacting materials are in motion against each other, charges are separated due to a difference in their electron-affinity. However, for insulators, it is unclear whether electrons, ions or material fragments transfer during contact. AFM is a very versatile and powerful method for investigating the physical origins of this effect for organic materials or combinations of organic materials with metal. Characterizing the surfaces of different materials before and after contacting with AFM-based methods can help us understand the relation between surface properties and triboelectric behavior. This includes topographic characterization as well as the detection of surface charges and work functions using the Kelvin probe method.
Since 06/2019: PhD student in the Hugel/Balzer Lab
10/2015 – 01/2018: M.Sc. in Materials Science at University of Stuttgart, Germany.
Topic of master thesis: Electrochemomechanically and humidity responsive bi-layer actuators
09/2011 – 07/2015: B.Eng. in Polymer Material and Engineering at Beijing University of Chemical Technology, China.
Topic of bachelor thesis: Synthesis and characterization of pyridyl benzoxazines
F. V. Frieß, Q. Hu, J. Mayer, L. Gemmer, V. Presser, B. N. Balzer & M. Gallei
Nanoporous block copolymer membranes with enhanced solvent resistance via UV-mediated cross-linking strategies
Macromol Rapid Commun., e2100632 (2021). https://doi.org/10.1002/marc.202100632
L. Gemmer, Q. Hu, B. Niebuur, T. Kraus, B. N. Balzer & M. Gallei*
A block copolymer templated approach for the preparation of nanoporous polymer structures and cellulose fiber hybrids by ozone treatment
Polym. Chem. (2022). https://doi.org/10.1039/D2PY00562J