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Mechanism of Hollow Nanoparticle Formation Due to Shape Fluctuations
Hollow Nanoparticle Formation Shape Fluctuations
2015/10/16
Shape fluctuations in nanoparticles strongly influence their stability. Here, we introduce a quantitative model of such shape fluctuations and apply this model to the important case of Pt-shell/transi...
This thesis presents a study of two basic modes of deformation of a thin sheet: wrinkling and crumpling, viewed primarily in the context of an elastic sheet confined by capillary forces on a drop of l...
Swelling and Folding as Mechanisms of 3D Shape Formation in Thin Elastic Sheets
elasticity folding geometry origami swelling thin sheets
2014/11/20
We work with two different mechanisms to generate geometric frustration on thin elastic sheets; isotropic differential growth and folding. We describe how controlled growth and prescribing folding pat...
A Fully Anisotropic Mechanism for Formation of Trapped Surfaces in Vacuum
A Fully Anisotropic Mechanis Trapped Surfaces Vacuum
2014/4/3
In collaboration with I. Rodnianski and J. Luk we extend considerably the result of Christodoulou on the dynamic formation of trapped surfaces in vacuum by allowing characteristic initial data which a...
Opinion formation in time-varying social networks: The case of Naming Game
Opinion formation time-varying social networks The case of Naming Game Social and Information Networks
2012/4/19
We study the dynamics of the Naming Game as an opinion formation model on time-varying social networks. This agent-based model captures the essential features of the agreement dynamics by means of a m...
Hierarchical Consensus Formation Reduces the Influence of Opinion Bias
Hierarchical Consensus Formation Influence of Opinion Bias Physics and Society
2012/4/19
We study the role of hierarchical structures in a simple model of collective consensus formation based on the bounded confidence model with continuous individual opinions. For the particular variation...
Global Calculations of Density Waves and Gap Formation in Protoplanetary Disks using a Moving Mesh
Global Calculations Density Waves Gap Formation Protoplanetary Disks Moving Mesh
2012/2/29
We calculate the global quasi-steady state of a thin disk perturbed by a low-mass protoplanet orbiting at a fixed radius using extremely high-resolution numerical integrations of Euler's equations in ...
Unusual pattern formation on Si(100) due to low energy ion bombardment
Unusual pattern formation Si(100) low energy ion bombardment
2012/2/27
In this paper evolution of silicon surface topography, under low energy ion bombardment, is investigated at higher oblique incident angles in the range of 63\degree-83\degree. Si(100) substrates were ...
Formation of ultracold metastable RbCs molecules by short-range photoassociation
ultracold metastable RbCs molecules short-range photoassociation Atomic Physics
2011/8/2
Formation of ultracold metastable RbCs molecules by short-range photoassociation.
Formation of "Lightnings" in a Neutron Star Magnetosphere and the Nature of RRATs
neutron stars, pulsars, rotating radio transients.
2011/9/15
The connection between the radio emission from “lightnings” produced by the absorption of high-energy photons from the cosmic gamma-ray background in a neutron star magnetosphere and radio bursts from...
Abstract—We show a simple method for constructing an infinite family of graph formation games with link bias so that the resulting games admits, as a pairwise
stable solution, a graph with an arbitra...
Gravitational interactions between fast neutrinos and the formation of bound rotational states
Gravitational neutrinos Circular states
2011/8/31
The gravitational forces exerted between fast neutrinos at short distances are examined using Newton’s gravitational law, special relativity, and the equivalence principle. It is found that the magnit...
Market efficiency, anticipation and the formation of bubbles-crashes
renormalization group, sociophysics, opinion dynamic, finance
2011/8/31
A dynamical model is introduced for the formation of a bullish or bearish trends driving an asset price in a given market. Initially, each agent decides to buy or sell according to its personal opinio...
Scalar models for the generalized Chaplygin gas and the structure formation constraints
Scalar models the generalized Chaplygin gas
2010/12/24
The generalized Chaplygin gas model represents a tentative to unify dark matter and dark energy. It is characterized by a fluid with an equation of state $p = - A/\rho^\alpha$. It can be obtained fro...
Experimental and theoretical study of processes of formation and growth of pearlite colonies in eutectoid steels
Experimental theoretical study of processes of formation pearlite colonies
2010/11/25
We describe our optical and electron-microscopy observations of pearlite structures in eutectoid steels which seem to imply that the mechanisms of formation of pearlite colonies in these steels differ...