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We model an infinitely long liquid bridge confined between two plates chemically patterned by stripes of same width and different contact angle, where the three-phase contact line runs, on average, perpendicular to the stripes. This allows…

This work is concerned with the micro-architecture of multi-layer material that globally exhibits desired mechanical properties, for instance a negative apparent Poisson ratio. We use inverse homogenization, the level set method, and the…

最优化与控制 · 数学 2019-01-30 Grigor Nika , Andrei Constantinescu

Nanofabrication research pursues the miniaturization of patterned feature size. In the current state of the art, micron scale areas can be patterned with features down to ~ 30 nm pitch using electron beam lithography. Our work demonstrates…

Semiconductor heterojunctions are foundational to many advanced electronic and optoelectronic devices. However, achieving high-quality, lattice-mismatched interfaces remains challenging, limiting both scalability and device performance.…

Interfaces such as grain boundaries in polycrystalline as well as heterointerfaces in multiphase solids are ubiquitous in materials science and engineering. Far from being featureless dividing surfaces between neighboring crystals,…

材料科学 · 物理学 2024-01-23 Aurélien Vattré

We study the chemical nature of the bonding of an oxide layer to the parent metal. In order to disentangle chemical effects from strain/misfit, Ti(10$\bar{1}$0)/TiO$_{2}$(100) interface has been chosen. We use the density functional…

材料科学 · 物理学 2012-12-10 Linggang Zhu , Graeme J. Ackland

We present a semi-anisotropic interfacial potential (SAIP) designed to classically describe the interaction between gold and two-dimensional (2D) carbon allotropes such as graphene, fullerenes, or hydrocarbon molecules. The potential is…

材料科学 · 物理学 2021-09-30 Wengen Ouyang , Oded Hod , Roberto Guerra

We present a theoretical analysis of the proximity effect at a graphene-superconductor interface. We use a tight-binding model for the electronic states in this system which allows to describe the interface at the microscopic level. Two…

介观与纳米尺度物理 · 物理学 2009-11-13 P. Burset , A. L. Yeyati , A. Martín-Rodero

Understanding the extent of contact between objects is crucial for surface-driven phenomena in the natural world. While interactions are known to occur at subnanometer-length scales, the techniques needed to measure such small-length scales…

软凝聚态物质 · 物理学 2024-02-21 Utkarsh Patil , Stephen Merriman , Shubhendu Kumar , Ali Dhinojwala

To confer high specificity and affinity in binding, contacts at interfaces between two interacting macromolecules are expected to exhibit pair preferences for types of atoms or residues. Here we quantify these preferences by measuring the…

生物大分子 · 定量生物学 2007-05-23 William W. Chen , Paul J. Choi , Jason E. Donald , Eugene I. Shakhnovich

Heat transfer at the interface between two materials is becoming increasingly important as the size of electronic devices shrinks. Most studies concentrate on the interfacial thermal conductance between either crystalline-crystalline or…

介观与纳米尺度物理 · 物理学 2024-09-09 Julien El Hajj , Christophe Adessi , Michaël de San Feliciano , Gilles Ledoux , Samy Merabia

We propose a model describing the interatomic interaction at the interface between fullerene $\mathrm{C}_{60}$ and aluminum. Using the density functional theory, we calculate the binding energy and the fullerene's position on the…

材料科学 · 物理学 2024-03-12 V. V. Reshetniak , O. B. Reshetniak , A. V. Aborkin , A. V. Filippov

The interfacial structures and interactions of two-dimensional (2D) materials on solid substrates are of fundamental importance for the fabrication and application of 2D materials. However, selection of a suitable solid substrate to grow 2D…

材料科学 · 物理学 2021-06-16 Xian-Li Zhang , Jinbo Pan , Xin Jin , Yan-Fang Zhang , Jia-Tao Sun , Yu-Yang Zhang , Shixuan Du

The computational modeling of many engineering problems using the Finite Element method involves the modeling of two or more bodies that meet through an interface. The interface can be physical, as in multi-physics and contact problems, or…

数值分析 · 计算机科学 2009-09-30 G. Haikal

Graphene adsorption on Au(111) surface was explored to identify their common surface structures by means of van der Waals corrected density functional theory calculations. The alignment of graphene in the form of certain rotational angles…

强关联电子 · 物理学 2020-05-13 Merve Yortanlı , Ersen Mete

We report that gold thermally deposited onto n-layer graphenes interacts differently with these substrates depending on the number layer, indicating the different surface properties of graphenes. This results in thickness-dependent…

化学物理 · 物理学 2011-03-24 Haiqing Zhou , Caiyu Qiu , Zheng Liu , Huaichao Yang , Lijun Hu , Ji Liu , Haifang Yang , Changzhi Gu , Lianfeng Sun

Interfaces between dissimilar materials control the transport of energy in a range of technologies including solar cells (electron transport), batteries (ion transport), and thermoelectrics (heat transport). Advances in computer power and…

材料科学 · 物理学 2018-12-06 Ji-Sang Park , Young-Kwang Jung , Keith T. Butler , Aron Walsh

Compositionally graded interfaces in power electronic devices eliminate dislocations, but they can also decrease thermal conduction, leading to overheating. We quantify the thermal resistances of GaN/AlN graded interfaces of varying…

材料科学 · 物理学 2019-03-27 Ambroise van Roekeghem , Bjorn Vermeersch , Jesús Carrete , Natalio Mingo

Friction is a major source of energy loss in mechanical devices. This energy loss may be minimized by creating interfaces with extremely reduced friction, i.e. superlubricity. Conventional wisdom holds that incommensurate interface…

材料科学 · 物理学 2023-12-25 Lukas Hörmann , Johannes J. Cartus , Oliver T. Hofmann

In most applications of nanoporous materials the pore structure is as important as the chemical composition as a determinant of performance. For example, one can alter performance in applications like carbon capture or methane storage by…

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