نتایج جستجو برای: transition metal dichacogenide

تعداد نتایج: 436811  

Journal: :Journal of the American Chemical Society 2006
Timothy J Clark Christopher A Russell Ian Manners

Transition metal catalysis represents a relatively unexplored but potentially useful route to form bonds between main group elements. Previous work in the area of amine-borane adduct dehydrocoupling has exclusively employed late transition metal (e.g., Rh) catalysts which were found to predominantly operate via a heterogeneous mechanism. Herein, we present a new, early transition-metal-catalyze...

2017
Kentaro Inokuma Ryo Iwamoto Takahiro Bamba Tomohisa Hasunuma Akihiko Kondo

Xylose-assimilating yeasts with tolerance to both fermentation inhibitors (such as weak organic acids) and high temperature are required for cost-effective simultaneous saccharification and cofermentation (SSCF) of lignocellulosic materials. Here, we demonstrate the construction of a novel xylose-utilizing Saccharomyces cerevisiae strain with improved fermentation ability under heat and acid co...

2000
B. Spivak

We consider a system of superconducting grains embedded in a normal metal. At zero temperature this system exhibits a quantum superconductor-normal metal phase transition. This transition can take place at arbitrary large con-ductance of the normal metal.

2015
Sabrina N. David Yao Zhai Arend M. van der Zande Kevin O'Brien Pinshane Y. Huang Daniel A. Chenet James C. Hone Xiang Zhang Xiaobo Yin Kevin O’Brien

Articles you may be interested in Acoustic phonon assisted free-carrier optical absorption in an n-type monolayer MoS2 and other transition-metal dichalcogenides J. Enhancement of band-to-band tunneling in mono-layer transition metal dichalcogenides two-dimensional materials by vacancy defects Appl. Band alignment of two-dimensional transition metal dichalcogenides: Application in tunnel field ...

Journal: :Journal of the American Chemical Society 1992

Journal: :Pure and Applied Chemistry 1990

Journal: :Nano letters 2013
Linfei Li Yeliang Wang Shengyi Xie Xian-Bin Li Yu-Qi Wang Rongting Wu Hongbo Sun Shengbai Zhang Hong-Jun Gao

Two-dimensional (2D) honeycomb systems made of elements with d electrons are rare. Here, we report the fabrication of a transition metal (TM) 2D layer, namely, hafnium crystalline layers on Ir(111). Experimental characterization reveals that the Hf layer has its own honeycomb lattice, morphologically identical to graphene. First-principles calculations provide evidence for directional bonding b...

Journal: :Nature materials 2014
Miguel M Ugeda Aaron J Bradley Su-Fei Shi Felipe H da Jornada Yi Zhang Diana Y Qiu Wei Ruan Sung-Kwan Mo Zahid Hussain Zhi-Xun Shen Feng Wang Steven G Louie Michael F Crommie

Two-dimensional (2D) transition metal dichalcogenides (TMDs) are emerging as a new platform for exploring 2D semiconductor physics. Reduced screening in two dimensions results in markedly enhanced electron-electron interactions, which have been predicted to generate giant bandgap renormalization and excitonic effects. Here we present a rigorous experimental observation of extraordinarily large ...

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