Graphene prepared by thermal decomposition of SiC is formed mainly at the edges of SiC terraces. Graphene growth is very sensitive to the temperature during the etching process, and the final quality of the layer may differ across the sample. The AFM-in-SEM approach allows for fast and effective quality analysis of the sample.
Published with courtesy: Jan Kunc, MFF UK, Czechia
In this application, graphene serves as a protective layer of the surface. The copper foil under the graphene is protected against oxidation, and its surface structures are preserved, unlike the surrounding of the graphene flake.
WSe2 monolayer represents a transparent photovoltaic material with LED properties. It is an ideal material for devices with tunable bandgaps - meaning the LEDs can be made from a single material. The certain shape of the monolayer over nanopillars forms a single photon emitter.
Published with courtesy: Veronika Hegrová, NenoVision, Czechia and Martin Konecny, CEITEC BUT, Czechia
The progress in the synthesis of high-quality and large-scale graphene is praiseworthy, however, the structural controllability and membrane homogeneity are big puzzles that researchers are faced with. CPEM technology, combining strengths of AFM and SEM, represents the perfect tool for in-situ analysis and optimization of graphene growth.
Published with courtesy: Guido Janssen, TU Delft, Netherlands