Author's posts
Sep 19
Membrane based solar cell paper
The membrane based solar paper in APL is out in which I was happy to contribute a bit: “Pixelated GaSb solar cells on silicon by membrane bonding” We demonstrate thin-film GaSb solar cells which are isolated from a GaSb substrate and transferred to a Si substrate. We epitaxially grow ∼3.3 μm thick GaSb P on N …
Aug 03
Scientific publishing
A true comment from XKCD: Your manuscript “Don’t Pay $25 to Access Any of the Articles in this Journal: A Review of Preprint Repositories and Author Willingness to Email PDF Copies for Free” has also been rejected, but nice try. XKCD is published under Creative Commons Attribution-NonCommercial 2.5 License at xkcd.org.
Jul 06
Do grades really serve the propose we want?
I read these days an interesting German article, questioning the future of grades as we give them today. Basically, he repeats a critic that we already discussed in our course in the EA2. The main points are: Grades are just a time snap of the moment. They do not tell you, what happened afterwards – …
Jul 03
Workshop on Epitaxy – LNNano
We had a very nice workshop at the LNNano at the 27. to 28. June bringing together the Brazilian community. Beside fruitful discussion and nice science, we had also the chance to socialize and re-enforce the community. Hope, this event will continue the next years as we are missing such a gathering in the last …
May 03
Getting ready for the EOSBF
I finished today the preparation of the tutorial for the Autumn Meeting of the Brazilian Physical Society . I looking forward to give talk about molecular beam epitaxy: “MOLECULAR BEAM EPITAXY – A VERSATILE METHOD FOR THE NANO-AGE “. In this tutorial, I would like to give an overview of MBE covering its importance for …
Apr 18
Beamline paper out
Low-aberration beamline optics for synchrotron infrared nanospectroscopy Sync hrotron infrared nanospectroscopy is a recently developed technique that enables new possibilities in the broadband chemical analysis of materials in the nanoscale, far beyond the diffraction limit in this frequency domain. Synchrotron infrared ports have exploited mainly the high brightness advantage provided by electron storage rings across …
Apr 16
Workshop em cresimento epitaxial (LNNano)
There will be a workshop on epitaxy at the LNNano at the end of June. I will have the pleasure to give a talk and advertise the facility a bit. I will explain, what we do in research, but also what kind of structures can be realized inside a service/collaboration. Hope to see you …
Mar 26
Back from the US
Back from the International Conference on Low-Dimensional Quantum Materials where I gave a talk about ” 2D nanomembranes as substrates for the growth of semiconductor nanostructures“. It was a very inspiring conference with excellent talks – I very much enjoyed the conversations with the other participates. On the way back, I had a chance to …
Feb 19
Molecular beam epitaxy
For those interested in the technique of Molecular Beam Epitaxy, I will give a tutorial on the topic in Foz at the meeting of the Brazilian Physical Society. It will be great to give an overview to the possibilities and discuss current and future developments. I also like to advertise again the possibility to do …
Jan 09
Silicon Nanomembranes with Hybrid Crystal Orientations and Strain States
Our publication investigating the structure of overgrown transferred silicon membranes is finally out: Have a look to “Silicon Nanomembranes with Hybrid Crystal Orientations and Strain States“. Methods to integrate different crystal orientations, strain states, and compositions of semiconductors in planar and preferably flexible configurations may enable nontraditional sensing-, stimulating-, or communication-device applications. We combine …
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