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We predict the existence of new two dimensional silicon carbide nanostructure employing ab initio density-functional theory calculations. These structures are composed of tetragonal and hexagonal rings with C-C and Si-C bonds arranged in a…

Materials Science · Physics 2020-12-16 Qun Wei , Ying Yang , Guang Yang , Xihong Peng

Silicon nanostructuring imparts unique material properties including antireflectivity, antifogging, anti-icing, self-cleaning, and/or antimicrobial activity. To tune these properties however, a good control over features size and shape is…

While 2D materials have enormous potential for future device technologies, many challenges must be overcome before they can be deployed at an industrial scale. One of these challenges is identifying the right semiconductor/insulator…

The metal diborides are a class of ceramic materials with crystal structures consisting of hexagonal sheets of boron atoms alternating with planes of metal atoms held together with mixed character ionic/covalent bonds. Many of the metal…

A nanometer-sized superconducting quantum interference device (nanoSQUID) is fabricated on the apex of a sharp quartz tip and integrated into a scanning SQUID microscope. A simple self-aligned fabrication method results in nanoSQUIDs with…

Tailoring of individual single-atom-thick layers in nanolaminated materials offers atomic-level control over material properties. Nonetheless, multielement alloying in individual atomic layers in nanolaminates is largely unexplored. Here,…

Coupled semiconductor nanostructures with a high degree of tunability are fabricated using local oxidation with a scanning force microscope. Direct oxidation of the GaAs surface of a Ga[Al]As heterostructure containing a shallow…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 M. Sigrist , A. Fuhrer , T. Ihn , K. Ensslin , D. C. Driscoll , A. C. Gossard

Background: The introduction of magnetic resonance (MR)-guided radiation treatment planning has opened a new space for theranostic nanoparticles to reduce acute toxicity while improving local control. In this work, second-generation AGuIX…

Highly ordered one-dimensional arrays of nanodots, or nanobeads, are fabricated by forming nanoripples and nanodots in sequence, entirely by ion-beamsputtering (IBS) of Au(001). This demonstrates the capability of IBS for the fabrication of…

Mesoscale and Nanoscale Physics · Physics 2015-05-27 J-H Kim , N-B Ha , J-S Kim , M Joe , K-R Lee , R. Cuerno

The existence of a new two dimensional CN2 structure was predicted using ab-initio molecular dynamics (AIMD) and density-functional theory calculations. It consists tetragonal and hexagonal rings with C-N and N-N bonds arranged in a…

Materials Science · Physics 2021-01-29 Qun Wei , Ying Yang , Alexander Gavrilov , Xihong Peng

Two-dimensional Na$_3$Bi is a dual topological insulator protected by time-reversal and mirror symmetry, resulting in a promising platform for devices design. However, in reality, the design of topological devices is hindered by a…

Mesoscale and Nanoscale Physics · Physics 2021-03-01 Bruno Focassio , Gabriel R. Schleder , Armando Pezo , Marcio Costa , Adalberto Fazzio

Within recent years, the field of nano-mechanics has diversified in a variety of applications, ranging from quantum information processing to biological molecules recognition. Among the diversity of devices produced these days, the simplest…

Mesoscale and Nanoscale Physics · Physics 2023-04-03 Ilya Golokolenov , Sumit Kumar , Baptiste Alperin , Bruno Fernandez , Andrew Fefferman , Eddy Collin

Ongoing demands for smaller and more energy efficient electronic devices necessitate alternative interconnect materials with lower electrical resistivity at reduced dimensions. Despite the emergence of many promising candidates,…

Semiconductor core$-$shell nanowires based on the GaAs substrate are building blocks of many photonic, photovoltaic and electronic devices, thanks to the associated direct band-gap and the highly tunable optoelectronic properties. The…

Materials Science · Physics 2020-10-22 Muhammad Usman

Temperature sensors with micro- and nanoscale spatial resolution have long been explored for their potential to investigate the details of physical systems at an unprecedented scale. In particular, the rapid miniaturization of transistor…

The physical and electronic properties of ultrathin two-dimensional (2D) layered nanomaterials are highly related to their thickness. Therefore, the rapid and accurate identification of single- and few- to multi-layer nanosheets is…

Materials Science · Physics 2013-10-28 Hai Li , Jumiati Wu , Xiao Huang , Gang Lu , Jian Yang , Xin Lu , Qihua Xiong , Hua Zhang

A uniform array of single-grain Au nanodots, as small as 5-8 nm, can be formed on silicon using e-beam lithography. The as-fabricated nanodots are amorphous, and thermal annealing converts them to pure Au single crystals covered with a thin…

Mesoscale and Nanoscale Physics · Physics 2011-09-16 N. Clement , G. Patriarche , K. Smaali , F. Vaurette , K. Nishiguchi , D. Troadec , A. Fujiwara , D. Vuillaume

Single crystalline bismuth (Bi) is known to have a peculiar electronic structure which is very close to the topological phase transition. The modification of the surface states of Bi depending on the temperature are revealed by…

Materials Science · Physics 2019-04-17 Y. Ohtsubo , Y. Yamashita , J. Kishi , S. Ideta , K. Tanaka , H. Yamane , J. E. Rault , P. Le Fèvre , F. Bertran , S. Kimura

Deterministic and versatile approaches to sample preparation on nanoscopic scales are important in many fields including photonics, electronics, biology and material science. However, challenges exist in meeting many nanostructuring…

Semiconductor Bi$_2$O$_2$Se nanolayers of high crystal quality have been realized via epitaxial growth. These two-dimensional (2D) materials possess excellent electron transport properties with potential application in nanoelectronics. It…

Mesoscale and Nanoscale Physics · Physics 2018-02-12 Mengmeng Meng , Shaoyun Huang , Congwei Tan , Jinxiong Wu , Yumei Jing , Hailin Peng , H. Q. Xu
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