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.

Drying Model of Two-Particle System Solution Considering Capillary Pressure

Kanji INOKO[1]

[1]Toyota Technical Development Corporation, Toyota, Aichi, Japan

The performance of Li-ion battery is known to be dependent on the thickness direction distribution of binder volume fraction. The distribution is determined by drying process of electrode ink, which contains large active material and small binder. With the aim of predicting binder segregation, we studied new drying model of two-particle system solution by considering capillary pressure.

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 ...

The Effect of Space Charge due to the Auto-Ionization of Neutral, Hydrogenic States in Point-Contact Germanium Detectors at MilliKelvin Temperatures - new

D. Faiez[1], N. Mirabolfathi[1], B. Sadoulet[1], K. M. Sundqvist[2]
[1]Department of Physics, University of California - Berkeley, Berkeley, CA, USA
[2]Department of Electrical & Computer Engineering, Texas A&M University, College Station, TX, USA

A class of semiconducting detectors, operated at temperature T~50mK, has direct application to the search for dark matter particle, when are able to simultaneously measure both the ionization and phonons created by particle interactions. We explore the effect of space charge accumulation in a germanium p-type point contact detector which arises due to the auto-ionization of hydrogenic ...

Scraping Non-Newtonian Power-Law Paint

C. R. Meyer [1], J. R. Rice [1],
[1] Harvard University, Cambridge, MA, USA

A similarity solution to Taylor's paint scraper problem for the flow of a non-Newtonian power-law fluid is presented. A shooting method numerical solution agrees with the results found for Newtonian fluids and is able to capture both shear-thinning and shear-thickening fluids. Simulations created in COMSOL Multiphysics® software are also presented to corroborate the shooting method and display ...

Doping Dependent I-V Characteristics of Single Silicon Nanowire

S. Mishra [1], S. K. Saxena [1], P. Yogi [1], P. R Sagdeo [1], R. Kumar [1],
[1] Indian Institute of Technology Indore, Indore, Madhya Pradesh, India

In the present work, we have studied the electron transport properties of single silicon nanowire using Semiconductor Module of COMSOLMultiphysics software. We construct a MSM (metal-semiconductor-metal) model where metal is selected as copper and semiconductor is taken as silicon. Silicon is doped with n-type impurity by increasing doping concentration. Further, the Schottky diodes formed at ...

Towards a Microscopic Model for Species Transport in Lithium-Sulphur Cells

Geraint Minton [1], Rajlakshmi Purkayastha [1], Laura O’Neill [1], Sylwia Walus [1], Mark Wild [1], Monica Marinescu [2], Teng Zhang [2], Gregory Offer [2],
[1] Oxis Energy Ltd, Abingdon, Oxfordshire, UK
[2] Mechanical Engineering Department, Imperial College, London, UK

Lithium-sulphur (Li-S) batteries have the potential to surpass the energy storage capability of Li-ion batteries due to their high theoretical gravimetric energy density of 2700 Wh/kg. However, the processes which drive the system behaviour are much more complex than those in a Li-ion cell, meaning that controlling them to realise energy densities much above 350 Wh/kg is challenging. In a Li ...

微波加热煤岩裂隙变形的电-热-固耦合模型

管伟明 [1], 聂欣 [1],
[1] 新疆大学,乌鲁木齐,新疆,中国

为研究不同加热方式下煤岩内部裂隙在热力耦合作用下的变形特征,建立了微波和常规加热两种数值模型,考查了不同温度场分布特征下裂隙周边应力应变场的变化过程。研究结果表明:微波加热,温度场分布具有内高外低的特征,此时裂隙周边分布的应力多为压应力,且数值较大,裂隙边界位移表现为向内收缩;常规加热,温度场分布具有外高内低的特性,此时裂隙周边分布应力多为拉应力,但量值较低,裂隙边界位移表现为向外扩张;热源越靠近裂隙压应力越明显,反之拉应力明显。

A Simulation App for Determining How Best to Cool a Beer Bottle

J. Richter[1], T. Hilbig[1], C. Schröder[1]
[1]University of Applied Sciences Bielefeld, Department of Engineering Sciences and Mathematics, Bielefeld, Germany

The scope of this project was the creation of a short and comprehensive tutorial for the use of COMSOL® Application Builder for students at the University of Applied Sciences Bielefeld. The tutorial is based on the everyday life “problem” how to cool a beer bottle most efficiently. It shows how to use the most important features and tools (e.g. creating buttons, input fields, methods, generating ...

Simulation of Molecular Transport of an Electroporated Cell using COMSOL Multiphysics®

J. V. D. Jayasooriya [1], D. Nawarathna [1],
[1] Department of Electrical and Computer Engineering, North Dakota State University, Fargo, ND, USA

Electroporation is a highly efficient cellular transfection method which is used to inject molecules into living cells. The electroporation involves creating temporary pores in cell membranes using an electrical field. It has been successfully utilized in medicine and biology for producing knockout mice, gene therapy, and cell-based therapy. As electroporation is an easy and rapid method, it is ...

Modeling of snRNP Motion in the Nucleoplasm

M. Blaziková[1], J. Malínský[2], D. Stanek[3], and P. Herman[1]
[1]Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic
[2]Institute of Experimental Medicine, Prague, Czech Republic
[3]Institute of Molecular Genetics, Prague, Czech Republic

Small nuclear ribonucleoprotein particles (snRNPs) are essential supramolecular complexes involved in pre-mRNA splicing, the process of post-transcriptional RNA modifications. The particles undergo complex assembly steps inside the cell nucleus in a highly dynamic compartment called the Cajal body. We have previously shown that the free diffusion model does not fully describe the snRNP motion ...