On July 4, 2022, the Aachen Graphene & 2D Materials Center will host a seminar of Prof. Taiichi Otsuji, from Tohoku University in Sendai, Japan.
Continue reading “Graphene Dirac plasmons for terahertz lasers, amplifiers, and detectors – a seminar by Prof. Taiichi Otsuji”Healing Achilles heel of two-dimensional transistors
Stability – in the sense of stable operation thorough lifetime – is one of the key characteristics that an electronic device need to present to be suitable for applications. And it is the Achilles heel of transistors based on two-dimensional materials, which typically show much worse stability than devices based on silicon. A team of researchers from TU Wien, AMO GmbH, RWTH Aachen University and Wuppertal University has now demonstrated a novel engineering approach to enhance the electrical stability of two-dimensional transistors by carefully tuning the Fermi energy. The results have been reported in Nature Electronics.
Continue reading “Healing Achilles heel of two-dimensional transistors”2D materials for next generation computing
In a compact comment published in Nature Communications, Max Lemme and colleagues outline the most promising fields of applications of two-dimensional (2D) materials, as well as the challenges that still need to be solved to see the appearance of high-tech products enabled by 2D-materials.
Continue reading “2D materials for next generation computing”A novel infrared photodetector based on two-dimensional platinum diselendide
Shayan Parhizkar and colleagues have demonstrated an integrated infrared-photodetector on a silicon waveguide using two-dimensional platinum diselendide (PtSe2).
Continue reading “A novel infrared photodetector based on two-dimensional platinum diselendide”Welcome to Prof. Sezin Tuta Şimşek
The Aachen Graphene & 2D Materials Center welcome Prof. Sezin Tuta Şimşek, who will spend a seven month research staying at RWTH Aachen University, hosted by the Chair for Electronic Devices (ELD).
Continue reading “Welcome to Prof. Sezin Tuta Şimşek”A unique chance for developers of graphene-based sensors
On February 2022, AMO GmbH and the 2D-Experimental Pilot Line have launched a call for their first multi-project wafer run. Developers of graphene-based sensors now have a unique chance to test their device concept on a large scale at moderate cost.
Continue reading “A unique chance for developers of graphene-based sensors”An international standard for the flatness of graphene
Researchers from RWTH Aachen University and the Graphene Flagship Standardization Committee have pushed through a new IEC standard for assessing the strain uniformity of single-layer graphene using Raman spectroscopy.
Continue reading “An international standard for the flatness of graphene”Perspective article in Science by Markus Morgenstern and Mark Goerbig.
Following the recent progresses made by the Yazdani group in visualizing broken symmetries and topological states caused by the interaction between electrons in graphene under high magnetic field [1], Markus Morgenstern and Mark Goerbig have released Perspective article in Science [2], where they review in a very accessible language the basic physics beyond the observed effects.
[1] Visualizing broken symmetry and topological defects in a quantum Hall ferromagnet
X. Liu, G. Farahi, C.-L.Chiu, Z. Papic, K. Watanabe, T. Taniguchi, M. P. Zaletel, and A. Yazdani
Science 375, 321 (2021). DOI: 10.1126/science.abm3770
[2] Many-particle electron states in graphene
M. Morgenstern and M. Goerbig
Science 375, 263 (2022). DOI: 10.1126/science.abn2049
Progress towards flexible, low-power transceivers based on MoS2
Scientists from RWTH Aachen University, AMO GmbH, EPFL and Aixtron SE have demonstrated the first power detectors based on Molybdenum disulphide (MoS2) that operate at zero bias. The fabricated circuits function in Ku-band between 12 and 18GHz, and are the best-performing power detectors fabricated on flexible substrate reported to date. Their dynamic range exceeds 30dB, outperforming other semiconductor technologies, like silicon complementary metal oxide semiconductor (CMOS) circuits and GaAs Schottky diodes.
Continue reading “Progress towards flexible, low-power transceivers based on MoS2”An extensive review on graphene-based microwave circuits
Mohamed Saeed and co-workers have published an extensive review article on graphene-based microwave circuits in the journal Advanced Materials.
Continue reading “An extensive review on graphene-based microwave circuits”