Artigos Técnicos e Apresentações

Aqui você encontrará apresentações realizadas nas Conferências de Usuários COMSOL de todo o mundo. As apresentações englobam pesquisas e produtos inovadores feitas por engenheiros e cientistas usando o COMSOL Multiphysics. Os tópicos abramgem uma grande gama de indústrias e aplicações, como elétrica, mecânica, escoamento e química. Use a função de busca "Quick Search" para encontrar apresentações na sua área de interesse.

A Study of Lubricating Flows in MEMS Bearings

E. Gutierrez-Miravete[1], and J. Streeter[2]

[1]Department of Engineering and Science, Rensselaer at Hartford, Hartford, Connecticut, USA
[2]Optiwind, Torrington, Connecticut, USA

The bearing and shaft are part of a safe and arm device constructed as an assembly by a multi-layer additive/subtractive plating and planarization processes (EFAB technology). Devices are constructed by a multi-layer additive/subtractive planarization process. This paper evaluates the lubricating flow between the shaft and journal of the MEMS bearing for seven configurations. The pressure ...

Modeling and Characterization of Superconducting MEMS for Microwave Applications in Radioastronomy

N. Al Cheikh[1], P. Xavier[1], J. Duchamp[1], and K. Schuster[2]
[1]Institute of Microelectronics, Electromagnetism and Photonics (IMEP-LAHC), Grenoble, France
[2]Institute of Millimetrics Radio Astronomy (IRAM), Grenoble, France

Superconducting GHz electronics circuits are frequently used in Radio Astronomy instrumentation. The features of these instrumentations can be significantly improved by using tuneable capacitances, which can be realized by electrically actuated, micromechanical bridges (MEMS) made of superconducting Niobium (Nb). In order to analyze the electromechanical behavior of such devices and the intrinsic ...

Optimal Design of Linear Motor Based on the Simulation of COMSOL Multiphysics

X. Chen
PAL University of Science and Technology, China

Linear motor has a lot of applications, such as magnetic levitation train, electromagnetic weapons. It is a very important research significance. We established a three-dimensional model of linear motor to calculate the magnetic field lines and flux density distribution, and got the electromagnetic force too. We compared the results of simulation using COMSOL and experiment under different ...

Efficient Generation of Surface Plasmon Polaritons with Asymmetric Nano-structures

J. Chen
Peking University

This paper covers the following: * All-Optical Light Modulation of surface plasmon polaritons (SPPs) is achieved using asymmetric single nanoslits. A high on/off switching ratio of >20 dB and phase variation of >? were observed with the device lateral dimension of only about 2 ?m. * Efficient unidirectional excitation of SPP as well as beam splitting are achieved using the ...

A Model of Electric Field Assisted Capillarity for the Fabrication of Hollow Microstructures

C. Tonry[1], M. K. Patel[1], C. Bailey[1], M. P.Y. Desmuliez[2], W. Yu[3]
[1]Computational Mechanics and Reliability Group (CMRG), School of Computing and Mathematical Sciences, University of Greenwich, London, United Kingdom
[2]Microsystems Engineering Centre (MISCEC, School of Engineering & Physical Sciences, Heriot Watt University, Earl Mountbatten Building, Edinburgh, United Kingdom
[3]State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, Jilin, China

Electric Field Assisted Capillarity (EFAC) is a novel technique for the fabrication of hollow polymer microstructures. It has advantages over current methods as it is a single step process. Hollow microstructures have many uses in industry from microchannels and microcapsules in BioMEMS to fibre-optical waveguides. It makes use of the dielectric properties of polymers combined with a heavily ...

Design and Implementation of MEMS based Blood Viscometer for INR Measurement

J. G. Immanuel[1], K. Poojitha[1], B. Viknesshwar[1], A. Gupta[1]
[1]PSG College of Technology, Peelamedu, Coimbatore, Tamil Nadu, India

The paper brings out the designing and implementation of blood viscosity monitoring device that gives us the INR to measure the effectiveness of anti coagulant medications .When a blood vessel is damaged, clotting cascade begins that results in blood clot. This process is affected by several medical conditions where it becomes mandatory for a patient to intake anti-coagulants. Thus to monitor ...

Nanoscale Structure Design in EM Fields Using COMSOL Multiphysics

J. Yoo[1], H. Soh[2], J. Choi[3], S. Song[4]
[1]Department of Mechanical Engineering, Yonsei University, Korea
[2]Hyundai Motor Co., Korea
[3]Samsung Electronics Co., Ltd., Korea
[4]Mando Co., Korea

Nanoscale structural analysis and design is presented. All the simulations are carried out using a finite element solver and optimization is performed using parameter and topology optimization schemes. It is concluded that COMSOL is effective for analysis and design of nanoscale structure design in electromagnetic field and it may be combined with several optimization methods to improve system ...

Design and Simulation of MEMS based Micro Pressure Sensor

P. Acharya[1]
[1]B.V.Bhoomaraddi College of Engineerring & Technology, Hubli, Karnataka, India

The world is getting digitalized, demands for new and emerging technologies have reached its peak, and customer demands have taken a U-turn. To cope with such unique requirements many systems and system devices are into the market and one of such enhancing technology is MEMS. MEMS are systems of small size, light weight, enhanced performance and reliability finding widest of applications in ...

Design and Simulation of a Cantilever Array for Fluid Flow Sensing Applications

K. Kavitha[1], Y. R. Manjoosha[1], C. S. Sukanya[1], K. Saranya[1], K. Chandra Devi[1], M. Alagappan[1], A. Gupta[1]
[1]Department of Biomedical Engineering, PSG college of technology, Coimbatore, TamilNadu, India

The biological hair-cell is a modular building block of a rich variety of biological sensors. These sensors are responsive to various mechanical properties like vibration, touch, gravitational forces, etc., especially flow. Using micro and nano-fabrication technology, an engineering equivalent of such sensors have been reported to be fabricated, imitating the structure and transfer function of ...

Modeling and Simulation of the Rapid and Automated Measurement of Biofuel Blending in a Microfluidic Device under Pressure Driven Flow using COMSOL Multiphysics®

Sanket Goel[1], Venkateswaran PS[1], Rahul Prajesh[2], Ajay Agarwal[2]
[1]University of Petroleum & Energy Studies, Bidholi, Prem Nagar, Dehradun, India
[2]CSIR - Central Electronics Engineering Research Institute,(CSIR-CEERI) Pilani, India

• Real-time detection and monitoring of bio-fuel blend-ratio and adulterated automobile fuels by a reproducible micro-fabrication process in a cost-and-time efficient manner. • COMSOL Multiphysics® simulations and modelling of Viscosity based Laminar Flow inside a Y-shaped Micro-fluidic Device. • Design and Fabrication of a polymer Y-shaped Micro-fluidic Device to work as ...

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