Proceedings of nanoGe Fall Meeting19 (NFM19)
DOI: https://doi.org/10.29363/nanoge.nfm.2019.067
Publication date: 18th July 2019
Although almost 30 years old, surface potential determination by Kevin-probe Force Microscopy (KPFM) is surprisingly little used for investigations of biological processes or materials. This could be due to the fact that KPFM, as an electrical measurement mode of AFM, is not considered to be readily amenable to in-water experiments. However, even KPFM performed in air, when conducted correctly, can tell us a lot about properties of biological samples. Here, I will give an overview of the possibilities, requirements and pitfalls of KPFM on such samples. A particular focus will be on sample preparation, the influence of the most relevant functional surface groups [1], and the influence of air humidity on the KPFM signal [2]. An example will be shown, where KPFM is used to study subtle surface charge shifts of collagen extracellular matrix fibres, which could have significant implications in cell adhesion, bone metabolism and the design of novel tissue scaffolds [3]. There are probably no other analytical methods at present to detect such small but significant changes of the electrical properties of biological materials while maintaining a high, spatial resolution. In addition, a brief overview will be given of current activities and challenges to expand AFM-based surface potential measurements to true in-water experiments [4].
nanoGe is a prestigious brand of successful science conferences that are developed along the year in different areas of the world since 2009. Our worldwide conferences cover cutting-edge materials topics like perovskite solar cells, photovoltaics, optoelectronics, solar fuel conversion, surface science, catalysis and two-dimensional materials, among many others.
Previously nanoGe Spring Meeting (NSM) and nanoGe Fall Meeting (NFM), MATSUS is a multiple symposia conference focused on a broad set of topics of advanced materials preparation, their fundamental properties, and their applications, in fields such as renewable energy, photovoltaics, lighting, semiconductor quantum dots, 2-D materials synthesis, charge carriers dynamics, microscopy and spectroscopy semiconductors fundamentals, etc.
International Conference on Hybrid and Organic Photovoltaics
International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.
Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics
The main topics of the Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP) are discussed every year in Asia-Pacific for gathering the recent advances in the fields of material preparation, modeling and fabrication of perovskite and hybrid and organic materials. Photovoltaic devices are analyzed from fundamental physics and materials properties to a broad set of applications. The conference also covers the developments of perovskite optoelectronics, including light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.
The International Conference on Perovskite Thin Film Photovoltaics Perovskite Photonics and Optoelectronics (NIPHO) is the best place to hear the latest developments in perovskite solar cells as well as on recent advances in the fields of perovskite light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.