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Corrosion is an inevitable phenomenon that is inherent in metals and even though there has been significant research on this subject, no ideal protection has been discovered to fully prevent corrosion. However, methods such as using…

应用物理 · 物理学 2018-12-11 Farhad Daneshvar

Self organizing anisotropic nematic liquid crystals (LCs) induce self-assembly on quantum dots (QDs) to form one-dimensional chains along the nematic director. Spatial ordering of QDs, achieved in the nematic LC matrix, can be controlled in…

软凝聚态物质 · 物理学 2008-12-10 Rajratan Basu , Germano S. Iannacchione

The recent discovery of ferroelectric nematic liquid crystalline phases marks a major breakthrough in soft matter research. An intermediate phase, often observed between the nonpolar and the ferroelectric nematic phase, shows a distinct…

Using grand canonical Monte Carlo (GCMC) simulations, we investigate the isotropic-nematic phase transition for hard rods of size Lx1x1 on a 3D cubic lattice. We observe such a transition for L >= 6. For L = 6, the nematic state has a…

软凝聚态物质 · 物理学 2017-08-02 A. Gschwind , M. Klopotek , Y. Ai , M. Oettel

Self-locking structures are often studied in macroscopic energy absorbers, but the concept of self-locking can also be effectively applied at the nanoscale. In particular, we can engineer self-locking mechanisms at the molecular level…

介观与纳米尺度物理 · 物理学 2024-09-02 Andrea Pedrielli , Simone Taioli , Nicola Maria Pugno

Nanometer thin single-walled carbon nanotube (CNT) films collected from the aerosol chemical deposition reactors have gathered attention for their promising applications. Densification of these pristine films provides an important way to…

Carbon nanotubes are of central importance for applications in nano-electronics thanks to their exceptional transport properties. They can be used as sensors, for example in biological applications, provided that they are functionalized to…

介观与纳米尺度物理 · 物理学 2020-04-14 Ghassen Jemaï , Jouda Khabthani , Guy Trambly de Laissardière , Didier Mayou

Using dynamic light scattering, we measure for the first time the temperature-dependent elastic moduli and associated orientational viscosity coefficients of the nematic phase in a self-assembled lyotropic chromonic liquid crystal. The bend…

软凝聚态物质 · 物理学 2008-07-18 Yu. A. Nastishin , K. Neupane , A. R. Baldwin , O. D. Lavrentovich , S. Sprunt

In this work we use density functional theory (DFT) calculations to benchmark empirical potentials for the interaction between nickel and sp$^2$ bonded carbon nanoparticles. These potentials are then used in order to investigate how Ni…

材料科学 · 物理学 2019-10-02 Samaneh Nasiri , Kai Wang , Mingjun Yang , Qianqian Li , Michael Zasier

We use continuum simulations to study the impact of anisotropic hydrodynamic friction on the emergent flows of active nematics. We show that, depending on whether the active particles align with or tumble in their collectively self-induced…

软凝聚态物质 · 物理学 2020-03-16 Kristian Thijssen , Luuk Metselaar , Julia M. Yeomans , Amin Doostmohammadi

Carbon nanotubes (CNTs) are a promising material for high-performance electronics beyond silicon. But unlike silicon, the nature of the transport band gap in CNTs is not fully understood. The transport gap in CNTs is predicted to be…

Chiral carbon nanotubes (CNTs) are direct-gap semiconductors with optical properties governed by one-dimensional excitons with enormous oscillator strengths. Each species of chiral CNTs has an enantiomeric pair of left- and right-handed…

We find in a model system of thermotropic liquid crystals that the translational diffusion coefficient parallel to the director $D_{\parallel}$ first increases and then decreases as temperature drops through the nematic phase, and this…

软凝聚态物质 · 物理学 2009-11-11 Dwaipayan Chakrabarti , Biman Bagchi

The study of liquid crystals at equilibrium has led to fundamental insights into the nature of ordered materials, as well as to practical applications such as display technologies. Active nematics are a fundamentally different class of…

软凝聚态物质 · 物理学 2015-08-19 Stephen J. DeCamp , Gabriel S. Redner , Aparna Baskaran , Michael F. Hagan , Zvonimir Dogic

Carbon nanotubes (CNTs) are nonlinear high-Q resonators with strong coupling to single-electron tunneling. We begin by describing several methods to detect the flexural motion of a CNT resonator. Next, we illustrate how single-electron…

介观与纳米尺度物理 · 物理学 2012-05-23 Harold B. Meerwaldt , Gary A. Steele , Herre S. J. van der Zant

We analyze the phase behavior of lyotropic nematic liquid crystals in the self-organizing flow, viz. so called active nematics (AN). Their elastic properties are mutually caused by evolution of topological defects (for instance,…

软凝聚态物质 · 物理学 2018-02-20 L. V. Elnikova

Narrow carbon nanotubes (CNTs) desalinate water, mimicking water channels of biological membranes, yet the physics behind selectivity, especially, the effect of the membrane embedding CNTs on water and ion transfer, is still unclear. Here,…

材料科学 · 物理学 2020-12-22 Vadim Neklyudov , Viatcheslav Freger

Using first-principles calculations, we examine the electronic and magnetic properties of partially open zigzag carbon nanotube (CNT) superlattices. It is found that depending on their opening degree, these superlattices can exhibit…

材料科学 · 物理学 2015-05-14 Bing Huang , Zuanyi Li , Young-Woo Son , Gunn Kim , Wenhui Duan , Jisoon Ihm

Suspensions of magnetic nanoplatelets in isotropic solvents are very interesting examples of ferrofluids. It has been shown that above a certain concentration {\Phi}NI such suspensions form a ferromagnetic nematic phase, which makes this…

软凝聚态物质 · 物理学 2019-07-01 Alenka Mertelj , Borut Lampret , Darja Lisjak , Jürgen Klepp , Joachim Kohlbrecher , Martin Čopič

Halloysite nanotubes (HNTs) are naturally occurring clay minerals found in Earth's crust that typically exist in the form of high aspect-ratio nanometers-long rods. Here, we investigate the evaporation-driven self-assembly process of HNTs…

软凝聚态物质 · 物理学 2024-01-10 Arun Dadwal , Meenu Prasher , Pranesh Sengupta , Nitin Kumar