We report size-based sorting of micro- and sub-micron particles using optical forces on a planar optofluidic chip. Two different combinations of fluid flow and optical beam directions in liquid-core waveguides are demonstrated. These methods allow for tunability of size selection and sorting with efficiencies as high as 100%. Very good agreement between experimental results and calculated parti...

Vortex-induced vibrations (VIVs) of a flexible cylinder subjected to multi-directional flows have been studied based on wake oscillator model. The flow comprises two slabs in different directions, with each slab having uniform uni-directional profile. dynamics the is described linear Euler–Bernoulli beam theory, and model uniformly distributed along hydrodynamic force acting it. coupled system ...

Existing texture-based 3D flow visualization techniques, e.g., volume Line Integral Convolution (LIC), are either limited to steady flows or dependent on special-purpose graphics cards. In this paper we present a texture-based hardware-independent technique for time-varying volume flow visualization. It is based on our Accelerated Unsteady Flow LIC (AUFLIC) algorithm (Liu and Moorhead, 2005), w...

Interior Point methods for Nonlinear Programming have been extensively used to solve the Optimal Power Flow problem. These optimization algorithms require the solution of a set of nonlinear equations to obtain the optimal solution of the power network equations. During the iterative process to solve these equations, the search for the optimum is based on the combination of two directions: the a...

A flow composed of two populations of pedestrians moving in different directions is modeled by a two-dimensional system of convection-diffusion equations. An efficient simulation of the two-dimensional model is obtained by a finite-volume scheme combined with a fully adaptive multiresolution strategy. Numerical tests show the flow behavior in various settings of initial and boundary conditions,...

Most texture-based 3D flow visualization techniques such as volume Line Integral Convolution (LIC) are limited to steady fields. Time-varying dense volume flow visualization is still an open problem due to intensive computation, demanding temporal-spatial coherence, and ad-hoc volume rendering. Our work is based on an enhanced Unsteady Flow LIC (UFLIC) algorithm, Accelerated UFLIC (AUFLIC), whi...

Lasers are the principle light sources of flow cytometers. Most modern benchtop instruments feature air-cooled argon-ion laser emitting 10-25 mW of light at 488 nm. This unit covers the various types of lasers available and the qualities that make them suitable or unsuitable for use in flow cytometers. Also included is a discussion of future directions, particularly in the development of solid-...

We describe an algorithm to enhance and binarize a fingerprint image. The algorithm is based on accurate determination of orientation flow of the ridges of the fingerprint image by computing variance of the neighborhood pixels around a pixel in different directions. We show that an iterative algorithm which captures the mutual interdependence of orientation flow computation, enhancement and bin...

The aim of this paper is to introduce procedural steps for extension of the 1Dhomodyne phase correction for k-space truncation in all gradient encodingdirections. Compared to the existing method applied to 2D partial k-space,signal losses introduced by the phase correction filter is observed to beminimal for the extended approach. In addition, the modified form of phasecorre...