Y
Yohai Roichman
Researcher at New York University
Publications - 15
Citations - 1194
Yohai Roichman is an academic researcher from New York University. The author has contributed to research in topics: Holography & Optical tweezers. The author has an hindex of 11, co-authored 15 publications receiving 1095 citations.
Papers
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Journal ArticleDOI
Characterizing and tracking single colloidal particles with video holographic microscopy
Sang-Hyuk Lee,Yohai Roichman,Gi-Ra Yi,Shin-Hyun Kim,Seung-Man Yang,Alfons van Blaaderen,Peter D. J. van Oostrum,David G. Grier +7 more
TL;DR: Digital holographic microscopy and Mie scattering theory are used to simultaneously characterize and track individual colloidal particles and measure their radius and refractive index.
Journal ArticleDOI
Optical forces arising from phase gradients.
TL;DR: It is demonstrated both theoretically and experimentally that phase gradients in a light field can be used to create a new category of optical traps complementary to the more familiar intensity-gradient traps known as optical tweezers.
PatentDOI
Optical solenoid beams
TL;DR: Optical solenoid beams as discussed by the authors are diffractionless solutions of the Helmholtz equation whose diffraction -limited in-plane intensity peak spirals around the optical axis, and whose wavefronts carry an independent helical pitch.
Journal ArticleDOI
Influence of nonconservative optical forces on the dynamics of optically trapped colloidal spheres: the fountain of probability.
TL;DR: In this paper, it was shown that a colloidal sphere trapped in a static optical tweezer does not come to equilibrium, but rather reaches a steady state in which its probability flux traces out a toroidal vortex.
Journal Article
Influence of non-conservative optical forces on the dynamics of optically trapped colloidal spheres: The fountain of probability
TL;DR: It is demonstrated both experimentally and theoretically that a colloidal sphere trapped in a static optical tweezer does not come to equilibrium, but rather reaches a steady state in which its probability flux traces out a toroidal vortex.