Frontiers of Physics

ISSN 2095-0462

ISSN 2095-0470(Online)

CN 11-5994/O4

邮发代号 80-965

2018 Impact Factor: 2.483



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Numerical investigation of relationship between water contact angle and drag reduction ratio of superhydrophobic surfaces
Liang Yin,Hai-Feng Zhang,Shu-Yuan Shi,Yao Lu,Yang Wang,Xiao-Wei Liu
Frontiers of Physics    2016, 11 (3): 114701-.
摘要   PDF (419KB)

This paper proposes a novel bubble model to analyze drag reduction. The relationship between the slip length and air bubble height is discussed. The numerical relationship between the surface contact angle and slip length is obtained using the solid-liquid contact ratio in the Cassie equation. The surface drag reduction ratio increases by 40% at low velocities when the solid liquid contact ratio decreases from 90% to 10%. An experimental setup to study liquid/solid friction drag is reported. The drag reduction ratio for the superhydrophobic surface tested experimentally is 30%–35% at low velocities. These results are similar to the simulation results obtained at low velocities.

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Recent advances in MXene: Preparation, properties, and applications
Lei Jin-Cheng(雷进程), Zhang Xu(张旭), Zhou Zhen(周震)
Frontiers of Physics    2015, 10 (3): 107303-null.
摘要   PDF (677KB)

Owing to the exceptional properties of graphene, intensive studies have been carried out on novel two-dimensional (2D) materials. In the past several years, an elegant exfoliation approach has been used to successfully create a new family of 2D transition metal carbides, nitrides, and carbonitrides, termed MXene, from layered MAX phases. More recently, some unique properties of MXene have been discovered leading to proposals of potential applications. In this review, we summarize the latest progress in development of MXene from both a theoretical and experimental view, with emphasis on the possible applications.

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Transport in graphene nanostructures
Christoph Stampfer, Stefan Fringes, Johannes Güttinger, Francoise Molitor, Christian Volk, Bernat Terrés, Jan Dauber, Stephan Engels, Stefan Schnez, Arnhild Jacobsen, Susanne Droscher, Thomas Ihn, Klaus Ensslin
Frontiers of Physics    2011, 6 (3): 271-293.
摘要   HTML   PDF (1095KB)

Graphene nanostructures are promising candidates for future nanoelectronics and solid-state quantum information technology. In this review we provide an overview of a number of electron transport experiments on etched graphene nanostructures. We briefly revisit the electronic properties and the transport characteristics of bulk, i.e., two-dimensional graphene. The fabrication techniques for making graphene nanostructures such as nanoribbons, single electron transistors and quantum dots, mainly based on a dry etching “paper-cutting” technique are discussed in detail. The limitations of the current fabrication technology are discussed when we outline the quantum transport properties of the nanostructured devices. In particular we focus here on transport through graphene nanoribbons and constrictions, single electron transistors as well as on graphene quantum dots including double quantum dots. These quasi-one-dimensional (nanoribbons) and quasi-zero-dimensional (quantum dots) graphene nanostructures show a clear route of how to overcome the gapless nature of graphene allowing the confinement of individual carriers and their control by lateral graphene gates and charge detectors. In particular, we emphasize that graphene quantum dots and double quantum dots are very promising systems for spin-based solid state quantum computation, since they are believed to have exceptionally long spin coherence times due to weak spin&ndash