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Laser Activated Gold Nanorods for the Photothermal Treatment of Cancer

F. Rossi[1], F. Ratto[1]
[1]CNR - Institute of Applied Physics "Nello Carrara", Sesto Fiorentino, Italy

Photothermal therapy through Gold Nanorods (GNRs) is a new approach for the minimally invasive treatment of cancerous tissue. In order to design the proper settings, it is important to study the thermal effect that are induced close to the nanoparticle (nanoscale model), in the close vicinity and in the cancerous tissue (microscale model). A temperature dependent 2D-model of this particular ...

Optimizing Fuel Cell Design with COMSOL Multiphysics

Chin-Hsien Cheng[1]
[1]Renewable Energy RD Center, Chung-Hsin Electric & Machinery, Taiwan

Proton exchange membrane fuel cells (PEMFCs) were investigated using COMSOL Multiphysics with the AC/DC Module and Chemical Engineering Module. Simulation may be used to increase the performance while decreasing the cost of the catalyst later (CL). Experimental validation of single and multi-layer CL was performed for varied PBI electrolyte content. The validated model was used to investigate ...

Analysis of Dielectrophoretic Force by Using COMSOL

Taewoo Lee[1]
[1]Department of Biomedical Engineering, Yonsei University, Seoul, South Korea

Dielectrophoresis is a phenomenon in which a force is exerted on a dielectric particle when it is subjected to a non-uniform electric field. In this research, we analyze dielectrophoretic (DEP) force using a geometry containing two electrodes, one with SiO2 and one without, with a gap between them. The relevant governing equations include the DEP force, the electrohydrodynamic and corresponding ...

Modeling Plant Morphodynamics in Predefined COMSOL Multiphysics® Interface

S. Nikolaev[1], A. Trubuil[2]
[1]Institute of cytology and genetics SB RAS, Novosibirsk, Russia
[2]Institut National de la Recherche Agronomique, Jouy-en-Josas, France

We used a predefined COMSOL Multiphysics® interface to imitate biological growth and shape change (morphodynamics). We found a set of parameters that supply observed morphodynamics for an Arabidopsis embryo during its transition from globular to heart stage.

Microfluidics based Worm Sorter

Koduri V.V.N.R.M Manohar Prasad[1], John Yan[2], Andrew A.Bettiol[2], K.C James Raju[1]
[1]University of Hyderabad, Hyderabad, Andhra Pradesh, India
[2]National University of Singapore, Singapore

The nematode Caenorhabditis elegans is a widely adopted model organism for studying various neurobiological processes at the molecular and cellular level in vivo. With a small, flexible, and continuously moving body, the manipulation of C.elegans becomes a challenging task. A lab-on-a-chip (LOC),is a device that integrates one or several laboratory functions on a single chip of only mm to a few ...

Design and Analysis of Multilayered MEMS Microphone Using COMSOL Multiphysics®

Saranya srinivasa raghavgan[1], Sowmya Srinivasa raghavan[1], Shruti Venkatesh[1]
[1]Rajalakshmi Engineering College, Chennai, India

In this project, we report a design of MEMS microphone that is based on the application of porous silicon in improving the sensitivity of bulk micro machined capacitive pressure sensors. The property of a low Young’s modulus of porous silicon and its dependence on porosity have been exploited to obtain a higher sensitivity compared to pressure sensors with single crystalline silicon membranes. ...

机械硬盘中超薄气体润滑特性的仿真研究

胡跃强 [1],
[1] 清华大学,北京,中国

引言:为了不断地增加磁存储密度,机械硬盘中磁头和盘片之间的间隙,即飞高,已经减小到了 10nm 以下,以比特磁记录技术(BPM)和热辅助磁记录技术(HAMR)为代表的新兴技术不断涌现,给磁头磁盘界面的超薄气体润滑特性研究提出了新的挑战。 COMSOL Multiphysics® 的使用:由于在超薄气体润滑领域,连续介质模型已经不再适用,控制方程为玻尔兹曼方程。本文以 F-K 模型为控制方程,此模型是在线性玻尔兹曼方程和 BGK 方程基础上结合流量连续条件建立的修正雷诺方程。我们使用了 COMSOL Multiphysics® 中的 PDE 接口进行了自定义修正雷诺方程的建模,并利用参数化扫描进行不同参数影响的分析。利用LiveLink with MATLAB 接口编制磁头动力学方程,并进行方程的求解,得到磁头飞行的稳定飞行姿态。 结果:通过 COMSOL 的仿真计算 ...

Modelling of Melt Cast Cooling and Solidification Processes for Explosives

P. Lamy-Bracq[1] and C. Coulouarn[1]
[1]Nexter Munitions, Tarbes, France

A solidification process of casting explosives in shell is studied in this paper. An enthalpy method approach is used to model the solidification process. Both the thermal and mechanical effects are taken into account. An ALE (Arbitrary Lagrangian-Eulerian) method is used to represent the physical deformation due to solidification. Results from the model are verified against experimental ...

COMSOL Multiphysics® Version 4

Svante Littmarck
President and CEO, COMSOL

Svante Littmarck is the CEO of the COMSOL group. He co-founded COMSOL in 1986. He holds a M.Sc. in Applied Mathematics from the Royal Institute of Technology in Stockholm. In 2004 he received an honorary doctoral degree from the Royal Institute of Technology.

High Temperature Process Simulation: An Example in Crystal Growth

H. Rouch[1] and O. Geoffroy[1]
[1]INOPRO, Villard de Lans, France

High temperature processes are used in a large variety of industrial application. Simulation helps to solve technological problems and increase energy efficiency in case of industrial scale simulation. We present in this paper a research equipment simulation. The aim is to increase knowledge of temperature field in the crystal growth region in order to give researcher some important information ...

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