نتایج جستجو برای: contact layer

تعداد نتایج: 436878  

2005
Viktor Polevikov Lutz Tobiska

The behaviour of a layer of magnetic fluid in a plane capillary subjected to a uniform magnetic field is studied numerically. Two different types of instabilities arise as the intensity of the magnetic field increases. For small contact angles the layer breaks along the capillary axis and spreads over the capillary wall whereas for large contact angles the layer elongates in the central part up...

1976
TING-SHU WU

The contact problem of elastic bodies, each consisting of a finite layer of uniform thickness rigidly adhering to a half-plane, is investigated on the basis of the two-dimensional theory of elasticity. The materials of the layer and the half-plane in the contact body are isotropic and homogeneous, yet each of them may have distinct elastic properties. The mixed boundary value problem is reduced...

2017
C. Dong Marc Bonnet Chunying Dong

A boundary-domain integral equation for a coated half-space (elastically isotropic homogeneous substratum, possibly anisotropic coating layer) is developed. The half-space fundamental solution is used, so that the discretization is limited to the potential contact zone (boundary elements), the potentially plastic part of the substratum and the coating layer (domain integration cells). Steady-st...

Journal: :ACS nano 2014
Han Liu Mengwei Si Yexin Deng Adam T Neal Yuchen Du Sina Najmaei Pulickel M Ajayan Jun Lou Peide D Ye

In this article, we study the properties of metal contacts to single-layer molybdenum disulfide (MoS2) crystals, revealing the nature of switching mechanism in MoS2 transistors. On investigating transistor behavior as contact length changes, we find that the contact resistivity for metal/MoS2 junctions is defined by contact area instead of contact width. The minimum gate dependent transfer leng...

2013
Rujie Sun Ye Zhang Kang Li Chao Hui Ke He Xucun Ma Feng Liu

We report photoresponse measurements from two comparable epitaxial graphene (EG) devices of different thicknesses (2-layer vs. 10-layer EG) made on SiC substrates. An asymmetric metal contact scheme was used in a planar configuration to form a Ti/EG/Pd junction. By moving the laser illumination across the junction, we observed an increased photocurrent signal resulting from local enhancement of...

Journal: :Science 2013
L Wang I Meric P Y Huang Q Gao Y Gao H Tran T Taniguchi K Watanabe L M Campos D A Muller J Guo P Kim J Hone K L Shepard C R Dean

Heterostructures based on layering of two-dimensional (2D) materials such as graphene and hexagonal boron nitride represent a new class of electronic devices. Realizing this potential, however, depends critically on the ability to make high-quality electrical contact. Here, we report a contact geometry in which we metalize only the 1D edge of a 2D graphene layer. In addition to outperforming co...

2007
Thomas Rösgen

A spatially self–referencing velocimetry system based on low–coherence interferometry has been developed. The measurement technique is contactless and relies on the interference between back–reflected light from an arbitrary reference surface and seeding particles in the flow. The measurement location and the flow velocity are measured relative to the reference surface’s location and velocity, ...

Journal: :JAMA ophthalmology 2014
Korine van Dijk Jack Parker C Maya Tong Lisanne Ham Jessica T Lie Esther A Groeneveld-van Beek Gerrit R J Melles

Midstromal implant of an isolated Bowman layer graft is a new approach to reduce ectasia in eyes with advanced keratoconus. The procedure should postpone penetrating or deep anterior lamellar keratoplasty. Ten eyes of 9 patients with progressive, advanced keratoconus and contact lens intolerance underwent the procedure with no intraoperative adverse events. Throughout the study period, we obser...

2016
Josua Stuckelberger Gizem Nogay Philippe Wyss Quentin Jeangros Christophe Allebé Fabien Debrot Xavier Niquille Martin Ledinsky Antonin Fejfar Matthieu Despeisse Franz-Josef Haug Philipp Löper Christophe Ballif

We present a novel passivating contact structure based on a nanostructured silicon-based layer. Traditional poly-Si junctions feature excellent junction characteristics but their optical absorption induces current losses when applied to the solar cell front side. Targeting enhanced transparency, the poly-Si layer is replaced with a mixed-phase silicon oxide/silicon layer. This mixed-phase layer...

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