Carbon nanotubes show electronic properties which are remarkably sensitive to mechanical strain. Thus, CNTs are expected to be promising candidates for nano scale strain sensors. Even more, they are discussed as a key component of future nano-opto-electro-mechanical systems (NOEMS).
Consequently, a comprehensive model for strained CNT transistors was recently published by Christian . Continue reading
In a recent paper in Physical chemistry chemical Physis we study the mechanisms for atomic layer deposition using the Cu(acac)2 precursor . By first-principles calculations and reactive molecular dynamics simulations we show that Cu(acac)2 chemisorbs on the hollow site of the Cu(110) surface and decomposes easily into a Cu atom and the acac-ligands. Continue reading
Ultra low-k dielectrics are one of the key components which allow for further shrinking of the the interconnect system used in todays semiconductor technology. During manufacturing steps such as trench etching the ULK material is degraded and some repair chemistry is required to restore its k-value. In a recent paper which appeared in Journal of Vacuum Science and technology Anja now modeled elementary steps of such an in-situ repair approach by using DFT calculations. Continue reading
Christian now went to US for a few months. He will study advanced electronic structure calculations in André Schleife’s group at the university of Illinois at Urbana-Champaign. Christian will use the methods to calculate the optical properties of CNTs which will finally complement his PhD. André, who initially comes from Chemnitz as well, is a recognized expert in this field. We wish Christian a good and succesfull stay and thank André for his support.
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Two contributions from the group are now published in a special issue of Microelectronics Engineering which contains original paper from the “Materials for advanced metallization conference 2014” held in Chemnitz, Germany. Continue reading
The paper by Fabian appeared recently in New Journal of Physics . Based on a very efficient linearly scaling algorithm Fabian was able to calculate the electron transport in defective CNTs of realistic size, i.e. up to a length of microns. Continue reading
Andreas managed to publish the main results of his PhD-thesis in a nanotechnology paper. The paper deals with the contact properties of metallic carbon nanotubes to several metals, which are of relevance for future carbon electronics. Continue reading