A. K. R. Paul, K. S. Gandhi, and A. K. Shukla
 Central Electrochemical Research Institute – Madras Unit, CSIR Complex, Taramani, Chennai, Tamil Nadu, India
 Department of Chemical Engineering, Indian Institute of Science, Bangalore , Karnataka, India
 Solid State & Structural Chemistry Unit, Indian Institute of Science, Bangalore , Karnataka, India
Direct borohydride fuel cells (DBFCs) use sodium borohydride (NaBH4) as fuel and hydrogen peroxide (H2O2) as an oxidant. A mathematical model encompassing mass balance of ionic species in different regions of the DBFC is developed. Both the oxidation of sodium borohydride and reduction of hydrogen peroxide are assumed to obey Tafel kinetics. This is combined with boundary conditions ...
N. Qudus, T. Mahbub, S. A. Ali, and M. Shajahan
 Bangladesh University of Engineering and Technology, Dhaka Bangladesh
A finite element model is employed to describe the electric potential distribution and electroosmotic flow field inside a wavy cylindrical channel. The model uses coupled Laplace and Poisson-Boltzmann to evaluate the electric potential distribution inside the channel. It also contains continuity and Navier–Stokes equations for the solution of fluid flow. A particle trajectory model was ...
V. Gnanaraj, V. Mohan, and B. Vellaikannan
Thiagarajar College of Engineering, Madurai, Tamilnadu, India
A fundamental understanding of the transport phenomena in microfluidic channels is critical for systematic design and precise control of such miniaturized devices towards the integration and automation of Lab-on- a-chip devices. Electroosmotic flow is widely used to transport and mix fluids in microfluidic systems. Electroosmotic transport in convergent divergent micronozzle is significant in ...
Y. Huang, and A. Mason
Electrical and Computer Engineering, Michigan State University, East Lansing, Michigan, USA
This paper describes the modeling of an electrochemical biosensor embedded in a microfluidic channel to determine the concentration of a target biomolecule. The total amount of analyte in the sample can be calculated by integrating the analyte concentration over the duration of the peak current. The biosensor is constructed by immobilizing redox-enzyme on an interdigitated array (IDA) electrode ...
COMSOL Derived Universal Scaling Model For Low Reynolds Number Viscous Flow Through Microfabricated Pillars – Applications to Heat Pipe Technology
N. Srivastava, and C.D. Meinhart
Department of Mechanical Engineering, University of California Santa Barbara, Santa Barbara California, USA
Cooling of high-power density electronic devices remains a challenge. Microfluidic heat-pipes with the potential of achieving ultra-high thermal conductivities offer a low-cost technology for cooling electronics. To achieve high thermal conductivity, it is critical to maximize the rate of liquid transport inside the heat pipe. We propose a novel array of microfabricated pillars to maximize liquid ...
COMSOL Multiphysics® as a Tool for Reducing Animals in Biomedical Research: An Application in Dermatology
F. Rossi and R. Pini
Istituto di Fisica Applicata “Nello Carrara”, Consiglio Nazionale delle Ricerche, Firenze, Italy
In biomedical research the use of animal models gives rise to several ethical problems. COMSOL Multiphysics® may be used as a non-animal technique, very useful in overcoming all these concerns. In this presentation a particular application in dermatology is shown. Bioheat equation mode and diffusion approximation were used to design a theoretical model of blue LED light interaction with an ...
R. Zúñiga-Quesada, M. Vílchez-Monge, P. Vega-Castillo
Instituto Tecnológico de Costa Rica, Cartago, Costa Rica
This work describes the study of a thermal actuator and modifications to the materials employed in order to decrease power consumption and implementation costs. For this study, we worked on improving the thermal actuator described in the work of T. Ebefors. The criteria for choosing the new materials were lower power consumption, commercial availability, and ease processing. The thermal actuator ...
K. Lowe [1,2], and Rao V. Arimilli
Oak Ridge National Laboratory, Oak Ridge, TN, USA
Department of Mechanical, Aerospace, and Biomedical Engineering, University of Tennessee, Knoxville, TN, USA
In some power electronic applications the available coolant temperature is close to maximum and controlling operating temperature becomes more challenging, for which new thermal management schemes must be considered. COMSOL predicts the 3D fluid behavior and 3D temperature distribution within an actively cooled power electronic structure. A solution mapping method is implemented to more ...
J. Caire, A. Bouh, and E. Guilminot
LEPMI, UMR 5631, INPG - CNRS, Saint Martin d’Hères, France
EPCC, Arc'Antique, Nantes, France
Restoration of archaeological materials from oceans is a major activity of Arc’ Antique. Organic materials such as wood, tissues, leathers, papers and ceramics found in sea water are always impregnated with salts. Rinsing such archaeological objects with pure water to extract the salts takes too long, so electrophoresis was used to improve the salt extraction. The objective of this ...
X. Liu, S. Wang, and L. Lu
Tianjin Institute of Power Source, Beijing, China
Tianjin Institute of Power Source (TIPS) is the first, the largest and most complete electrical energy technology research institute of China. We use COMSOL Multiphysics to simulate the lithium-ion batteries. It contains: Simulation on charge-discharge behavior of lithium ion cells; Simulation on thermal and safety of lithium ion cells; Design for lithium ion cells – collector, stress; From ...