Browsing by Subject "Materials Science, Multidisciplinary"
Now showing items 1-13 of 13
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Chiral quasiparticle tunneling between quantum Hall edges in proximity with a superconductor
(Physical Review B, 2019-09-10)© 2019 American Physical Society. We study a two-terminal graphene Josephson junction with contacts shaped to form a narrow constriction, less than 100nm in length. The contacts are made from type-II superconducting contacts ... -
Importance of diameter control on selective synthesis of semiconducting single-walled carbon nanotubes.
(ACS nano, 2014-08-11)The coexistence of semiconducting and metallic single-walled carbon nanotubes (SWNTs) during synthesis is one of the major bottlenecks that prevent their broad application for the next-generation nanoelectronics. Herein, ... -
Influence of humidity on tribo-electric charging and segregation in shaken granular media.
(Soft matter, 2017-01)We study the effect of humidity on the charge accumulation of polymer granulates shaken vertically in a stainless steel container. This setup allows us to control the humidity level from 5% to 100%RH while performing automated ... -
Measuring the configurational temperature of a binary disc packing.
(Soft matter, 2014-06)Jammed packings of granular materials differ from systems normally described by statistical mechanics in that they are athermal. In recent years a statistical mechanics of static granular media has emerged where the thermodynamic ... -
Nonequilibrium quantum transport through a dissipative resonant level
(Physical Review B - Condensed Matter and Materials Physics, 2013-06-21)The resonant-level model represents a paradigmatic quantum system which serves as a basis for many other quantum impurity models. We provide a comprehensive analysis of the nonequilibrium transport near a quantum phase transition ... -
Postponing the dynamical transition density using competing interactions
(Granular Matter, 2020-08-01)Systems of dense spheres interacting through very short-ranged attraction are known from theory, simulations and colloidal experiments to exhibit dynamical reentrance. Their liquid state can thus be fluidized at higher densities ... -
Retrapping current, self-heating, and hysteretic current-voltage characteristics in ultranarrow superconducting aluminum nanowires
(Physical Review B - Condensed Matter and Materials Physics, 2011-11-08)Hysteretic I-V (current-voltage) curves are studied in narrow Al nanowires. The nanowires have a cross section as small as 50 nm2. We focus on the retrapping current in a down-sweep of the current, at which a nanowire re-enters ... -
Self-Assembling DNA templates for programmed artificial biomineralization
(Soft Matter, 2011-05-16)Complex materials with micron-scale dimensions and nanometre-scale feature resolution created via engineered DNA self-assembly represent an important new class of soft matter. These assemblies are increasingly being exploited ... -
Structural Tolerance Factor Approach to Defect-Resistant I<inf>2</inf>-II-IV-X<inf>4</inf> Semiconductor Design
(Chemistry of Materials, 2020-02-25)Copyright © 2020 American Chemical Society. Recent work on quaternary semiconductors Cu2BaSn(S,Se)4 and Ag2BaSnSe4 for photovoltaic and thermoelectric applications, respectively, has shown the promise of exploring the broader ... -
Subkelvin lateral thermal transport in diffusive graphene
(Physical Review B, 2019-03-29)© 2019 American Physical Society. In this work, we report on hot carrier diffusion in graphene across large enough length scales that the carriers are not thermalized across the crystal. The carriers are injected into graphene ... -
Surface-enhanced Raman scattering nanosensors for in vivo detection of nucleic acid targets in a large animal model
(Nano Research, 2018-08-01)© 2018, Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature. Although nanotechnology has led to important advances in in vitro diagnostics, the development of nanosensors for in vivo detection ... -
The Limits of Primary Radiation Forces in Bulk Acoustic Standing Waves for Concentrating Nanoparticles
(Particle and Particle Systems Characterization, 2018-07-01)Acoustic waves are increasingly used to concentrate, separate, and pattern nanoparticles in liquids, but the extent to which nanoparticles of different size and composition can be focused is not well-defined. This article ... -
Tunable quantum phase transitions in a resonant level coupled to two dissipative baths
(Physical Review B - Condensed Matter and Materials Physics, 2014-02-18)We study tunneling through a resonant level connected to two dissipative bosonic baths: one is the resistive environment of the source and drain leads, while the second comes from coupling to potential fluctuations on a ...
