منابع مشابه
Plasticity of Nano- and Micro-pillars
We review unique mechanisms of plastic deformation in nanoand micropillars. At the nanoscale, it is shown that plastic deformation is asymmetric with respect to direction of mechanical loading, as a result of specific relationships between the normal and resolved shear stress on active slip planes. This is attributed to the dependence of shear wave speed on the stress state acting on slip plane...
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We study the propagation of a noninteracting atom laser distorted by the strong lensing effect of the Bose-Einstein condensate (BEC) from which it is outcoupled. We observe a transverse structure containing caustics that vary with the density within the residing BEC. Using the WKB approximation, Fresnel-Kirchhoff integral formalism, and ABCD matrices, we are able to describe analytically the at...
متن کاملLight-Driven Reversible Shaping of Individual Azopolymeric Micro-Pillars
Azopolymers are known to exhibit a strong light responsivity known as athermal photofluidization. Although the underlying physics is still under debate, athermal photofluidization has been demonstrated to trigger mass-migration according to the polarization of a proper illumination light. Here, a polymer blend is proposed wherein a commercial azo-polyelectrolyte is mixed with a passive polymer....
متن کاملCreeping Flow through Microchannels with Integrated Micro-pillars
Pressure drop through micro-pillar-integrated mini/microchannels is studied experimentally and analytically. Following our previous studies, the low aspect ratio micropillars embedded in a microchannel are modeled as a porous medium sandwiched between channel walls. The pressure drop is expressed as a function of the salient geometrical parameters such as channel dimension, diameter and spacing...
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ژورنال
عنوان ژورنال: Applied Physics Letters
سال: 2007
ISSN: 0003-6951,1077-3118
DOI: 10.1063/1.2751586