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Reverse electrodialysis is a promising method to harvest the osmotic energy stored between seawater and freshwater, but it has been a long-standing challenge to fabricate permselective membranes with the power density surpassing the…

Applied Physics · Physics 2019-12-09 Zhenkun Zhang , Wenhao Shen , Lingxin Lin , Mao Wang , Ning Li , Zhifeng Zheng , Feng Liu , Liuxuan Cao

Extending chip performance beyond current limits of miniaturisation requires new materials and functionalities that integrate well with the silicon platform. Germanium fits these requirements and has been proposed as a high-mobility channel…

Developing applicable two-dimensional (2D) electrode materials with high performance, especially with high ion storage capacity, has become an ever more obsessive quest in recent years. Based on first-principles calculations, we report that…

Materials Science · Physics 2020-06-14 Xiaoming Zhang , Lei Jin , Xuefang Dai , Guifeng Chen , Guodong Liu

CO$_2$ capture using carbon-based materials, particularly graphene and graphene-like materials, is a promising strategy to deal with CO$_2$ emissions. However, significant gaps remain in our understanding of the molecular-level interaction…

We have investigated thermal conductivity of graphene laminate films deposited on polyethylene terephthalate substrates. Two types of graphene laminate were studied - as deposited and compressed - in order to determine the physical…

Materials Science · Physics 2014-11-21 H. Malekpour , K. -H. Chang , J. -C. Chen , C. -Y. Lu , D. L. Nika , K. S. Novoselov , A. A. Balandin

Graphene decorated with 5d transitional metal atoms is predicted to exhibit many intriguing properties; for example iridium adatoms are proposed to induce a substantial topological gap in graphene. We extensively investigated the…

Mesoscale and Nanoscale Physics · Physics 2016-04-18 Yilin Wang , Shudong Xiao , Xinghan Cai , Wenzhong Bao , Janice Reutt-Robey , Michael S. Fuhrer

Phosphorus (P) in germanium (Ge) delta-doped layers are fabricated in ultra-high vacuum by adsorption of phosphine molecules onto an atomically flat clean Ge(001) surface followed by thermal incorporation of P into the lattice and epitaxial…

Mesoscale and Nanoscale Physics · Physics 2012-07-25 G. Scappucci , G. Capellini , W. C. T. Lee , M. Y. Simmons

Uniform, mostly single-layer graphene with enhanced stability is demonstrated over Co film. The polycrystalline Co film deposited on a SiO2/Si substrate gives a continuous graphene layer that is easily transferred without the aid of any…

Materials Science · Physics 2016-04-21 Giampiero Amato , Federico Beccaria , Umberto Vignolo , Federica Celegato

The formation of atomic nanoclusters on suspended graphene sheets have been investigated by employing a Molecular dynamics simulation at finite temperature. Our systematic study is based on temperature dependent Molecular dynamics…

Materials Science · Physics 2009-11-13 M. Neek-Amal , Reza Asgari , M. R. Rahimi Tabar

We performed Scanning Thermal Microscopy measurements on single layers of chemical-vapor-deposited -CVD- graphene supported by different substrates, namely SiO2, Al2O3 and PET using a double-scan technique to remove the contribution to the…

We report resistivity measurements from 0.03 K to 10 K in a dilute high mobility 2D electron system. Using an undoped GaAs/AlGaAs heterojunction in a gated field-effect transistor geometry, a wide range of densities, $0.16 \times 10^{10}…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 M. P. Lilly , J. L. Reno , J. A. Simmons , I. B. Spielman , J. P. Eisenstein , L. N. Pfeiffer , K. W. West , E. H. Hwang , S. Das Sarma

We have investigated the evolution of the temperature-dependent conductivity of electron-doped pentacene (PEN) thin films, in which the electron density is controlled by means of potassium (K) intercalation. We find that the conductivity is…

Strongly Correlated Electrons · Physics 2007-05-23 M. F. Craciun , S. Rogge , A. F. Morpurgo

Motivated by a recent experiment reporting on the possible application of graphene as sensors, we calculate transport properties of 2D graphene monolayers in the presence of adsorbed molecules. We find that the adsorbed molecules, acting as…

Mesoscale and Nanoscale Physics · Physics 2007-11-16 E. H. Hwang , S. Adam , S. Das Sarma

The effect of the adsorption of a polypeptide on the lateral interaction of dimyristoylphosphatidylserine molecules in different phase states on the surface of a 10\,mM KCl aqueous solution has been studied. Changes in the surface pressure…

To stabilize the working temperature of an equipment, a solid-state thermal resistor is usually a requisite, which could adjust its heat conductance continuously according to the temperature. In this work, the thermal conductivity and the…

Mesoscale and Nanoscale Physics · Physics 2025-01-14 Congliang Huang , Changkang Du , Qiangqiang Huang , Xiaodong Wang

We demonstrate the extensive study on how film density and crystallinity of molybdenum carbide ($MoC_{x}$) can be tailored during plasma-enhanced ALD (PEALD) by controlling either the plasma exposure time or the ion energy. We investigated…

Applied Physics · Physics 2019-11-13 Eldad Grady , Marcel Verheijen , Tahsin Faraz , Saurabh Karwal , W. M. M. Kessels , Ageeth A. Bol

We report high room-temperature mobility in single layer graphene grown by Chemical Vapor Deposition (CVD) after wet transfer on SiO$_2$ and hexagonal boron nitride (hBN) encapsulation. By removing contaminations trapped at the interfaces…

The enormous stiffness and low density of graphene make it an ideal material for nanoelectromechanical (NEMS) applications. We demonstrate fabrication and electrical readout of monolayer graphene resonators, and test their response to…

Graphdiyne is a novel two-dimensional material deriving from graphene that has been recently synthesized and featuring uniformly distributed sub-nanometer pores. We report accurate calculations showing that graphdiyne pores permit an almost…

Graphene, owing to its zero bandgap electronic structure, is promising as an absorption material for ultra-wideband photodetection applications. However, graphene-absorption based detectors inherently suffer from poor responsivity due to…

Applied Physics · Physics 2019-08-20 Krishna Murali , Nithin Abraham , Sarthak Das , Sangeeth Kallatt , Kausik Majumdar