Institution
MESA+ Institute for Nanotechnology
About: MESA+ Institute for Nanotechnology is a based out in . It is known for research contribution in the topics: Membrane & Thin film. The organization has 2351 authors who have published 4073 publications receiving 132818 citations.
Topics: Membrane, Thin film, Silicon, Laser, Pulsed laser deposition
Papers published on a yearly basis
Papers
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TL;DR: In this article, the authors use density functional theory to study how graphene is doped by adsorption on metal substrates and find that weak bonding on Al, Ag, Cu, Au, and Pt, while preserving its unique electronic structure, can still shift the Fermi level with respect to the conical point by 0:5 eV.
Abstract: Making devices with graphene necessarily involves making contacts with metals. We use density functional theory to study how graphene is doped by adsorption on metal substrates and find that weak bonding on Al, Ag, Cu, Au, and Pt, while preserving its unique electronic structure, can still shift the Fermi level with respect to the conical point by 0:5 eV. At equilibrium separations, the crossover from p-type to n-type doping occurs for a metal work function of 5:4 eV, a value much larger than the graphene work function of 4.5 eV. The numerical results for the Fermi level shift in graphene are described very well by a simple analytical model which characterizes the metal solely in terms of its work function, greatly extending their applicability.
2,231 citations
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TL;DR: This critical review focuses on the recent progress (within the last three years) in the preparation, theoretical modeling, and applications of superhydrophobic surfaces.
Abstract: Superhydrophobic surfaces have drawn a lot of interest both in academia and in industry because of the self-cleaning properties. This critical review focuses on the recent progress (within the last three years) in the preparation, theoretical modeling, and applications of superhydrophobic surfaces. The preparation approaches are reviewed according to categorized approaches such as bottom-up, top-down, and combination approaches. The advantages and limitations of each strategy are summarized and compared. Progress in theoretical modeling of surface design and wettability behavior focuses on the transition state of superhydrophobic surfaces and the role of the roughness factor. Finally, the problems/obstacles related to applicability of superhydrophobic surfaces in real life are addressed. This review should be of interest to students and scientists interested specifically in superhydrophobic surfaces but also to scientists and industries focused in material chemistry in general.
1,885 citations
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University of Surrey1, University of New Mexico2, Colorado School of Mines3, Pennsylvania State University4, Georgia Institute of Technology5, Imperial College London6, University of Connecticut7, MESA+ Institute for Nanotechnology8, Newcastle University9, University of Science and Technology of China10, Wuhan University11
TL;DR: In this paper, an up-to-date perspective on the use of anion-exchange membranes in fuel cells, electrolysers, redox flow batteries, reverse electrodialysis cells, and bioelectrochemical systems (e.g. microbial fuel cells).
Abstract: This article provides an up-to-date perspective on the use of anion-exchange membranes in fuel cells, electrolysers, redox flow batteries, reverse electrodialysis cells, and bioelectrochemical systems (e.g. microbial fuel cells). The aim is to highlight key concepts, misconceptions, the current state-of-the-art, technological and scientific limitations, and the future challenges (research priorities) related to the use of anion-exchange membranes in these energy technologies. All the references that the authors deemed relevant, and were available on the web by the manuscript submission date (30th April 2014), are included.
1,526 citations
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TL;DR: In this article, the electronic structure of a graphene sheet on top of a hexagonal boron nitride (h-BN) substrate was determined using ab initio density functional calculations.
Abstract: We determine the electronic structure of a graphene sheet on top of a lattice-matched hexagonal boron nitride (h-BN) substrate using ab initio density functional calculations. The most stable configuration has one carbon atom on top of a boron atom, and the other centered above a BN ring. The resulting inequivalence of the two carbon sites leads to the opening of a gap of 53 meV at the Dirac points of graphene and to finite masses for the Dirac fermions. Alternative orientations of the graphene sheet on the BN substrate generate similar band gaps and masses. The band gap induced by the BN surface can greatly improve room temperature pinch-off characteristics of graphene-based field effect transistors.
1,414 citations
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TL;DR: In this paper, a review of recent developments and future perspectives in carbon dioxide usage for sustainable production of energy and chemicals and to reduce global warming is presented, focusing on the design of metal electrodes to improve their performance and recent developments of alternative approaches such as the application of ionic liquids as electrolytes and microorganisms as co-catalysts.
Abstract: This review highlights recent developments and future perspectives in carbon dioxide usage for the sustainable production of energy and chemicals and to reduce global warming. We discuss the heterogeneously catalysed hydrogenation, as well as the photocatalytic and electrocatalytic conversion of CO2 to hydrocarbons or oxygenates. Various sources of hydrogen are also reviewed in terms of their CO2 neutrality. Technologies have been developed for large-scale CO2 hydrogenation to methanol or methane. Their industrial application is, however, limited by the high price of renewable hydrogen and the availability of large-volume sources of pure CO2. With regard to the direct electrocatalytic reduction of CO2 to value-added chemicals, substantial advances in electrodes, electrolyte, and reactor design are still required to permit the development of commercial processes. Therefore, in this review particular attention is paid to (i) the design of metal electrodes to improve their performance and (ii) recent developments of alternative approaches such as the application of ionic liquids as electrolytes and of microorganisms as co-catalysts. The most significant improvements both in catalyst and reactor design are needed for the photocatalytic functionalisation of CO2 to become a viable technology that can help in the usage of CO2 as a feedstock for the production of energy and chemicals. Apart from technological aspects and catalytic performance, we also discuss fundamental strategies for the rational design of materials for effective transformations of CO2 to value-added chemicals with the help of H2, electricity and/or light.
1,368 citations
Authors
Showing all 2351 results
Name | H-index | Papers | Citations |
---|---|---|---|
Phaedon Avouris | 126 | 496 | 76151 |
Flemming Besenbacher | 114 | 728 | 51827 |
David N. Reinhoudt | 107 | 1082 | 48814 |
Detlef Lohse | 104 | 1075 | 42787 |
Zhong-Min Su | 90 | 1153 | 38726 |
Tomás Torres | 88 | 625 | 28223 |
Jan Greve | 84 | 521 | 24303 |
Matthias Wessling | 84 | 674 | 26409 |
Clemens van Blitterswijk | 83 | 401 | 25904 |
Anthony L. Spek | 81 | 1090 | 59190 |
Luis Echegoyen | 74 | 576 | 20094 |
Luisa De Cola | 71 | 365 | 17566 |
Twan Lammers | 69 | 256 | 15825 |
Andrea Prosperetti | 68 | 330 | 17313 |
Frank C. J. M. van Veggel | 68 | 208 | 14331 |