Browsing FAS Scholarly Articles by Title
Now showing items 2357-2376 of 18292
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Collective generation of milliemulsions by step-emulsification
(Royal Society of Chemistry, 2017)Emulsification is a key step in many processes for the production and functionalization of dispersed liquid systems. Here, we report a versatile and robust device that generates monodisperse milliemulsions by stepemulsification. ... -
Collective Phenomena in Quasi-Two-Dimensional Fermionic Polar Molecules: Band Renormalization and Excitons
(American Physical Society, 2011)We theoretically analyze a quasi-two-dimensional system of fermionic polar molecules in a harmonic transverse confining potential. The renormalized energy bands are calculated by solving the Hartree-Fock equation numerically ... -
Collective States of Non-Abelian Quasiparticles in a Magnetic Field
(American Physical Society, 2009)Motivated by the physics of the Moore-Read nu=1/2 state away from half filling, we investigate collective states of non-Abelian e/4 quasiparticles in a magnetic field. We consider two types of collective states: incompressible ... -
Collective transport of complex objects by simple robots: Theory and experiments
(2013)Ants show an incredible ability to collectively transport complex irregular-shaped objects with seemingly simple coordination. Achieving similarly effective collective transport with robots has potential applications in ... -
Collectively Enhanced Interactions in Solid-State Spin Qubits
(American Physical Society (APS), 2013)We propose and analyze a technique to collectively enhance interactions between solid-state quantum registers composed from random networks of spin qubits. In such systems, disordered dipolar interactions generically result ... -
The Collimated Jet Source in IRAS 16547-4247: Time Variation, Possible Precession, and Upper Limits to the Proper Motions along the Jet Axis
(American Astronomical Society, 2008)The triple radio source detected in association with the luminous infrared source IRAS 16547-4247 has previously been studied with high angular resolution and high sensitivity with the Very Large Array at 3.6 cm wavelength. ... -
Collision-Induced Spin Depolarization of Alkali-metal Atoms in Cold \(^3\)He Gas
(American Physical Society, 2008)We present a joint experimental and theoretical study of spin depolarization in collisions of alkali-metal atoms with \(^3\)He in a magnetic field. A rigorous quantum theory for spin-changing transitions is developed and ... -
Collision-Induced Spin Exchange of Alkali-Metal Atoms With \(^3\)He: An Ab Initio Study
(American Physical Society, 2009)We present a rigorous quantum study of spin-exchange transitions in collisions of the alkali-metal atoms with \(^3\)He in the presence of an external magnetic field. Using accurate ab initio interaction potentials, we ... -
Collision-induced spin exchange of alkali-metal atoms withH3e: Anab initiostudy
(American Physical Society (APS), 2009)We present a rigorous quantum study of spin-exchange transitions in collisions of the alkali-metal atoms with H3e in the presence of an external magnetic field. Using accurate ab initio interaction potentials, we obtain ... -
Collisional cooling of ultracold molecules
(Springer Science and Business Media LLC, 2020-04-08) -
A collisional perspective on quadrupedal gait dynamics
(The Royal Society, 2011)The analysis of terrestrial locomotion over the past half century has focused largely on strategies of mechanical energy recovery used during walking and running. In contrast, we describe the underlying mechanics of legged ... -
Collisional Properties of Cold Spin-Polarized Nitrogen Gas: Theory, Experiment, and Prospects as a Sympathetic Coolant for Trapped Atoms and Molecules
(American Physical Society, 2010)We report a combined experimental and theoretical study of collision-induced dipolar relaxation in a cold spin-polarized gas of atomic nitrogen (N). We use buffer gas cooling to create trapped samples of \(^{14}\)N and ... -
Collisional relaxation of vibrational states of SrOH with He at 2 K
(IOP Publishing, 2015)Vibrational relaxation of strontium monohydroxide (SrOH) molecules in collisions with helium (He) at 2 K is studied.We find the diffusion cross section of SrOH at 2.2 K to be σ =±× − d (5 2) 10 cm 14 2 and the vibrational ... -
Collisional Stripping and Disruption of Super-earths
(American Astronomical Society, 2009)The final stage of planet formation is dominated by collisions between planetary embryos. The dynamics of this stage determine the orbital configuration and the mass and composition of planets in the system. In the solar ... -
Collisionless shock formation, spontaneous electromagnetic fluctuations, and streaming instabilities
(AIP Publishing, 2013)Collisionless shocks are ubiquitous in astrophysics and in the lab. Recent numerical simulations and experiments have shown how they can arise from the encounter of two collisionless plasma shells. When the shells ... -
Collisionless Weibel shocks: Full formation mechanism and timing
(AIP Publishing, 2014)Collisionless shocks in plasmas play an important role in space physics (Earth's bow shock) and astrophysics (supernova remnants, relativistic jets, gamma-ray bursts, high energy cosmic rays). While the formation of a fluid ... -
Collisions of Trapped Molecules With Slow Beams
(American Physical Society, 2010)We present a theoretical study of molecular-trap loss induced by collisions with slow atomic beams based on an explicit analysis of collision kinematics in the laboratory frame and a rigorous quantum description of ... -
Colloidal matter: Packing, geometry, and entropy
(American Association for the Advancement of Science (AAAS), 2015)Colloidal particles with well-controlled shapes and interactions are an ideal experimental system for exploring how matter organizes itself. Like atoms and molecules, these particles form bulk phases such as liquids and ...