Here you will find presentations given at COMSOL Conferences around the globe. The presentations explore the innovative research and products designed by your peers using COMSOL Multiphysics. Research topics span a wide array of industries and application areas, including the electrical, mechanical, fluid, and chemical disciplines. Use the Quick Search to find presentations pertaining to your application area.

Modeling Flow of Magnetorheological Fluid through a Micro-channel

N.M. Bruno[1], C. Ciocanel[1] and A. Kipple[2]
[1]Department of Mechanical Engineering, Northern Arizona University, Flagstaff, Arizona, USA
[2]Dept. of Electrical Engineering and Computer Sciences, Northern Arizona University, Flagstaff, Arizona, USA

This paper presents the approach taken through the utilization of COMSOL Multiphysics 3.5a, to develop a model that simulates the flow of a magnetorheological (MR) fluid through a micro-channel. The model was developed as an aid in the analysis of a micropump that produces flow by means of displacement of a MR fluid slug within a microchannel.

Optimizing the Design of Polymer based Unimorph Actuator using COMSOL Multiphysics

V. Tiwari[1], R. Sharma[1], G. Srivastava[1], R. Dwivedi[1]
[1]Jaypee Institute of Information Technology, Noida, Uttar Pradesh, India

Cantilever beam-type transducers have been in great demand and explored widely in the recent years, typically in thin film form because of their sensor and actuator applications. The piezoelectric cantilever is the most preferred structure employed in technological applications. Depending on the required flexural motion and sensitivities, these piezoelectric cantilevers can be used in unimorph, ...

Simulation of an AlN Thin Film Resonator for High Sensitivity Mass Sensors

M. Maitra [1], H. B. Nemade [1], S. Kundu [1],
[1] Indian Institute of Technology Guwahati, Guwahati, Assam, India

The objective of this paper is to show the simulation of a piezoelectric thin film device and its application as a sensor. Piezoelectric aluminum nitride thin film clamped at two ends is simulated using COMSOL Multiphysics software. The device consists of the piezoelectric thin film suspended on a cavity etched on a silicon substrate. Two metal electrodes are placed at the two fixed sides of the ...

Janus 颗粒自驱运动的数值模拟

崔海航 [1], 王雷磊 [1], 谭晓君 [1],
[1] 西安建筑科技大学,西安,陕西,中国

Janus 颗粒是由物理或化学性质不同的两部分所构成的颗粒的总称。由于其结构的特殊性以及自驱动特性使其在MEMS、药物传输等领域有着潜在的应用价值。本文基于COMSOL Mutiphysics® 4.3a 多物理场耦合模拟平台对不同形状的 Pt-SiO2 型 Janus 颗粒的在不同浓度 H2O2 溶液中的自扩散泳动进行了数值模拟,并进一步研究模拟了球形 Janus 颗粒的近壁面运动。

Design and Analysis of Micro-tweezers with Alumina as Gripper Using COMSOL Multiphysics

V. S. Selvakumar, M. S. Gowtham, M. Saravanan, S. Suganthi, and L. Sujatha
Rajalakshmi Engineering College
Chennai, India

Micro-tweezers have been widely investigated because of their extensive applications in micro-fluidics technology, microsurgery and tissue-engineering. It has been reported that thermal actuation provides greater forces and easier control when compared to electrostatic micro actuation. In this paper, we discuss about the effects of Alumina as gripper on the operation of micro tweezers. The ...

Resonant Frequency Analysis of Quartz Shear Oscillator

T. Satyanarayana[1], V. Sai Pavan Rajesh[2]
[1]NPMASS Centre, Lakireddy Bali Reddy Autonomous Engineering College, Mylavaram, Andhra Pradesh, India
[2]Lakireddy Bali Reddy Autonomous Engineering College, Mylavaram, Andhra Pradesh, India

The most commonly used type of resonator is the AT-cut, where the quartz blank is in the form of a thin plate cut at an angle to the optic axis of the crystal. This paper reports the modeling of a quartz oscillator for a resonant frequency analysis based on piezoelectric effects. The proposed oscillator consists of a single quartz disc with two electrodes on the top and bottom surfaces of the ...

Air Convection on a Micro Hotplate Gas Sensor

S. Gidon[1], M. Brun[1], S. Nicoletti[1], P. Barritault[1]
[1]Commissariat Energie Atomique, LETI, Minatec Campus, Grenoble, France

Monitoring of indoor CO2 concentration is of particular interest to detect room occupancy in order to optimize power consumptions of building. One approach to monitor the indoor CO2 concentration is to use optical detection using specific absorption lines of CO2 molecules in the infrared domain close to 4.2 µm. Such optical sensors include a detector, typically a micro-bolometer, an IR source ...

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 Micro-Viscometer for ...

Investigation on MEMS Based Thermal Sensor for Cancer Detection

A. V. Lakshmi[1], K. C. Devi[1]
[1]PSG College of Technology, Coimbatore, Tamil Nadu, India

This paper presents the design and simulation of a thermal sensor using COMSOL Multiphysics® software for the detection of low body temperature syndrome which can allow the early detection of cancer. This sensor is made of an alloy consisting of two materials with different coefficients of thermal expansion. The main objective of this work is to investigate the structural change in the sensor ...

COMSOL在压阻式柔性压力传感器中的应用

王宗荣 [1,2], 王珊 [1],
[1] 浙江大学,杭州,中国
[2] 香港大学,香港,中国

引言:柔性压力传感器在电子皮肤、智能假肢以及医疗监测诊断等领域发挥着十分重要的作用。因此压力传感器需要很高的灵敏度、较宽的敏感区间及稳定的性能。利用典型有机硅 PDMS 作为支撑层,聚合物 PEDOT: PSS 作为导电感应层制得的高度不均一微突结构的双压敏机制压阻传感器灵敏度达到了 851kPa-1。其探测范围广,性能优异,为解决目前压阻传感器中灵敏度低、敏感压力区间窄的难题提供了新思路。 COMSOL MULTIPHYSICS® 软件的使用:本文利用 COMSOL Multiphysics® 软件建立了不均匀微突结构的压阻式传感器模型,采用了结构力学与电流场两个物理场,通过电子接触对进行多物理场的耦合。研究在指定位移情况下,压阻式传感器电阻与电流的变化,从而得到灵敏度,验证不均匀微突结构压阻式压力传感器的双作用机制。同时,与均一微金字塔结构的压力传感器进行比较 ...