A physicist journeying through the small world

featuring the work of Tomáš Duchoň

2018-12-15

Utilizing glancing angle deposition, we control the geometry of porous tin oxide films. The nanorod-like structure of the deposited films can be tuned to form intricate patterns, such as spirals or zig-zags. We analyze each pattern via microscopy in combination with computer modeling and determine the film with the highest surface area to material ratio. The film is then further characterized with respect to the potential application in gas sensing and catalysis, focusing on temperature stability and metal loading. The results are available in a new Materials Chemistry and Physics paper.

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2018-11-24

The advent of the hydrogen economy is accompanied by increased demand for sensing devices. In our recent paper, we introduce an improvement of WO3-based hydrogen sensors via deposition of CuO nanoclusters that lead to the formation of nano p–n junctions on the surface. The preparation techniques used in the study are scalable and compatible with standard industrial processes. Furthermore, the improvement was achieved without the use of noble metals. The paper is free to access for the next 50 days through this link.

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