Acoustophotonic imaging uses ultrasound-modulated scattered light to improve the quality of optical imaging in diffusive media. Experiments that use photorefractive-crystal-based detection have shown that there is a large dc shift in the acoustically modulated or ac optical signal, which could be utilized to further improve optical imaging resolution. We report that photon paths in a diffusive ...

We demonstrate that magnetic reversal in perpendicularly magnetized nanostructures is highly dependent on the nature and condition of the edges. To understand the impact of edge damage, we compare nanostructures created by ion milling to those prepared on prepatterned substrates. The sizeand temperature-dependent reversal properties of 25 nm–1 m diameter nanodots show that reversal in prepatter...

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abstract the purpose of this study was to study the relations between the self- leadership behavioral- focused strategies and creativity among the faculty members of iran university of science and technology. the population consisted of all faculty members of iran university of science and technology in the academic year of 2008- 2009 of whom 113 subjects were selected by proportional stratifie...

We report experimental results on the dynamics of a granular packing submitted to high-intensity focused ultrasound. Acoustic radiation pressure is shown to remotely induce local rearrangements within a pile as well as global motion around the focal spot in an initially jammed system. We demonstrate that this fluidization process is intermittent for a range of acoustic pressures and hysteretic ...

The angular spectrum approach is evaluated for the simulation of focused ultrasound fields produced by large thermal therapy arrays. For an input pressure or normal particle velocity distribution in a plane, the angular spectrum approach rapidly computes the output pressure field in a three dimensional volume. To determine the optimal combination of simulation parameters for angular spectrum ca...

Within the discipline of psychology, the conventional history outlines the development of two fundamental approaches to the scientific study of emotion-"basic emotion" and "appraisal" traditions. In this article, we outline the development of a third approach to emotion that exists in the psychological literature-the "psychological constructionist" tradition. In the process, we discuss a number...