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Suchbegriff:

生物颗粒光声功率谱的有限元数值模拟研究

李勇 [1], 方晖 [2],
[1] 晋中学院，太原，中国
[2] 深圳大学，深圳，中国

定量分析生物颗粒形态的变化可以为疾病诊断提供依据。例如血红细胞形态的变化常常会伴随有相应的血液疾病[1]，细胞的癌变常常伴随有细胞核形态的变化[2]等等。无标记的光学显微成像技术已经可以对生物颗粒的尺度和形状进行直接测量。光声显微成像技术 (PAM) 利用生物颗粒固有的吸光本领，已经可以对单个生物颗粒（如细胞和细胞器）进行成像[3]。最近，光声流式仪(the photoacoustic flow-cytometry)已经实现了对单个生物颗粒进行连续检测[4]。然而，为了在大量的生物颗粒中快速检测生物颗粒的形貌，最好的方法是并非对其进行直接成像，而是采用高频光声显微技术 ... Mehr lesen

Extraordinary Optical Transmission in Copper-Based Devices at Terahertz Frequencies

S. Almousa [1], J. A. Deibel [1],
[1] Department of Physics, Wright State University, Dayton, OH, USA

While low frequency light is poorly transmitted through an aperture in a conductive thin film, in the phenomenon known as extraordinary optical transmission (EOT), a narrow band of selected frequencies are transmitted when incident on an array of subwavelength periodic apertures where ... Mehr lesen

Drag Fluctuations of a Fully Deployed Flow Actuator Embedded Inside Turbulent Boundary Layer Flow

Dr. A. Elzawawy[1]
[1]Engineering & Technology Department, Vaughn College of Aeronautics & Technology, Flushing, NY, USA

Introduction: In this work, a CFD model of 2D flow around a fully deployed flow actuator was developed using COMSOL Multiphysics® software and the CFD Module. The results of COMSOL modeling is also compared with the experimental data of the same dimensions actuator. The 100mmX2mm ... Mehr lesen

Simulations of Negative Curvature Hollow-core Fiber

J. Zhang[1], Z. Wang[1], J. Chen[1]
[1]College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha, Hunan, China

COMSOL Multiphysics® software was used to simulate and analyze the transmission attenuation spectra of the negative curvature hollow-core fiber (NCHCF) over the wavelength from 2.7 μm to 4.2 μm. The effect of thickness of capillaries and the effect of the distance between the capillaries ... Mehr lesen

COMSOL® Application Builder Lets End-Users Harness the Power of Numerical Modeling and Simulation

J. Speyrer [1], A. Maurer [1], D. Enfrun [1], R. Rozsnyo [2],
[1] Kejako SA, Plan les Ouates, Switzerland
[2] MNCM/HES-SO, Geneva, Switzerland

Kejako is developing a non-invasive solution for demanding presbyopia patients seeking to keep their quality of life through the compensation of visual accommodation decay. The company has already developed the first and proprietary 3D parametric model of the complete eye. The model ... Mehr lesen

Generating Simulated Data for Spot Heating/IR Camera Analysis of Coal Slag Surfaces

M. Silva[1], T. Ring[1]
[1]Department of Chemical Engineering, University of Utah, Salt Lake City, UT, USA

For combustion simulations, the wall temperature and heat transfer is an important piece of information. Coal combustion systems typically have walls that are initially a cast ceramic, but, with time, slag is deposited on the surface and coal and soot are incorporated into the slag. It ... Mehr lesen

COMSOL Multiphysics® Software for Simulation of Surface Response to Excitation Method for Manufacturing Process Performance Monitoring

H. Fekrmandi[1], N. Miniello[1], R. Kiflemariam[1], I. Nur Tansel[1]
[1]Mechanical & Materials Engineering Department, Florida International University, Miami, FL, USA

In this study, COMSOL Multiphysics® software was used to simulate the surface response to excitation method (SuRE). An aluminum beam with a piezoelectric element bonded is modeled using the COMSOL Acoustics Module. A frequency domain sweep study was performed to simulate the sweep sign ... Mehr lesen

Using High Pressure Chemical Vapor Deposition to Make Multimaterial Optical Fibers

S. Chaudhuri [1], J. V. Badding [1],
[1] Pennsylvania State University, University Park, PA, USA

Ever since its advent optical fibers have revolutionized the communication technology but apart from communication they are being used in a variety of other areas such as medical technology, sensing, laser sources in the form of fiber lasers, amplifiers, cutting and drilling, defense ... Mehr lesen

Design and Simulation of a Piezoelectric Actuated Valveless Micropump

J. J. Rojas [1], J. E. Morales [2],
[1] School of Electromechanical Engineering, Instituto Tecnológico de Costa Rica, Cartago, Costa Rica
[2] School of Electronic Engineering, Instituto Tecnológico de Costa Rica, Cartago, Costa Rica

Microfluidics is a multidisciplinary field, basically it designs systems to handle small volumes of fluids. Most applications require a pumping action in order to move the fluid trough the system. For most of them a micro scale active pump is highly desirable. A piezoelectric micropump ... Mehr lesen

Simulation of CVD Process in a Reactor

A. Kulkarni [1], F. Mumme [1], V. Frettlöh [1],
[1] Gemeinnützige KIMW Forschungs-GmbH, Lüdenscheid, NRW, Germany

Metal-organic chemical vapour deposition (MOCVD) is a well-known process to produce high quality thin films that can protect, ennoble and functionalize metallic tools. To realize a high performance coating on a complex 3D mold surface, knowledge about the material formation from a ... Mehr lesen

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