P.R. Basha, B. Mishra, and A. Zachariah
School of Electronics Engineering, VIT University, Vellore, Tamil Nadu, India
The realization of miniature SAW device is compatible on CMOS device for mobile and wireless communication system has become very important in recent years. Acoustic wave propagation along the surface of a piezoelectric material provides a means of implementing a variety of signal processing devices at frequency ranging from several MHz to a few GHz. In this work, a Miniature SAW device is ...
Two Dimensional Model of a Catalytic Plate Reactor for Methane Steam Reforming Using Different Kinetic Mechanisms
M.A. Mundhwa, C.P. Thurgood, and B.A. Peppley
Royal Military College of Canada, Kingston, ON, Canada
Queen's University, Kingston, ON, Canada
Coupling of an endothermic reaction and an exothermic reaction using catalytic plate reactor (CPR) is a well known concept for industrial processes such as steam reforming, dehydrogenation and hydrocarbon cracking. In the CPR, the exothermic reaction (e.g., combustion of methane) can provide the necessary heat to drive the endothermic reaction (e.g., steam reforming of methane). The present work ...
M.H. Oztop, and K.L. McCarthy
University of California, Davis, CA, USA
In this study, Whey Protein Isolate (WPI) gels of different thickness were soaked in solutions of pH 7.0 and mass uptake was recorded. A finite element model based on diffusion and deformed mesh application modes in COMSOL Multiphysics was developed. Deformed mesh application mode provided the opportunity to incorporate the moving boundaries. The moving boundaries were solved by introducing ...
Modeling Antibiotic Diffusion in a Microfluidic Biofilm Array to Study Bacterial Responses to Antibiotic Concentrations and Combinations
J. Deng, L. Villegas, L. Shor, A. Vázquez, A. Dhummakupt, P. Samson, and J.P. Wikswo
University of Connecticut, Storrs, CT, USA
Instituto Tecnológico y de Estudios Superiores de Monterrey, Monterrey, Mexico
Vanderbilt University, Nashville, TN, USA
Bacteria within a biofilm typically exhibit higher resistance to antibiotic therapy due to mass transport resistance of the biofilm matrix and/or reduced metabolic activity of cells living within the biofilm interior. The objective of this research was to develop a high-throughput experimental and modeling approach to investigate the effects of colony spacing and concentration on the ...
Design of Novel Lithographic Strategies Through Application of Electromagnetic and Multiphysics Simulations
J.P. Singer, J. Lee, S. Ni, M.A. Gibson, S.E. Kooi, and E.L. Thomas
Massachusetts Institute of Technology, Cambridge, MA, USA
Large area patterning techniques such as interference lithography or self-assembly provide 3D nanoscale structures, but lack arbitrary control over what regions are patterned. 3D direct write (DW) lithographic techniques such as multiphoton lithography (MPL) possess the capability to fabricate nearly arbitrary patterns; however, due to the serial nature of DW, fabrication is slow relative to ...
J.H. Park, and P. Krstic
Oak Ridge National Laboratory, Oak Ridge, TN, USA
Ionic current through an electrolyte filling a carbon nanotube (CNT) is characterized by unusually high current values, due to the strong slip of the fluid at the inner surface of the nanotube, as well as of a dominating role of electro-osmotic component. Using COMSOL, we explore the fundamental features of this phenomenon with respect to the CNT length and excess charge inside the tube. COMSOL ...
J. Stang, B. Fowlkes, M. Moghaddam, O. Kripfgans, and P. Carson
University of Michigan, Ann Arbor, MI, USA
A transcutaneous thermal therapy system is being developed for the targeted treatment of breast cancer cells using focused microwaves as an adjuvant to surgery, radiation, chemotherapy, and high intensity focused ultrasound (HIFU). Prior imaging studies are used to ascertain the material properties of the breast tissue, and this data is incorporated into a COMSOL Multiphysics model. Time ...
J.V. Clark, F. Li, and A. Shankar
Purdue University, West Lafayette, IN, USA
In this paper we present a computational study on energy harvesting for microid microrobots. We examine the feasibility of extracting energy from the ambient environment through the piezoelectric legs of the microid. Microids are microrobots that have insect like dexterity. The microid’s use in remote locations makes it imperative for it to be able to recharge itself. Clark et al. presented a ...
A. Cyganowski, H. Leidecker, J. Brusse, L. Panashchenko, and T.E. Schmidt
Rensselaer Polytechnic Institute, Troy, NY, USA
NASA Goddard Space Flight Center, Greenbelt, MD, USA
St. Mary's College of Maryland, St. Mary's City, MD, USA
Metal foil resistors are often chosen for NASA space flight applications due to their high precision and stability. COMSOL Multiphysics is used to develop a test that screens out metal foil resistors containing gridline defects. The resistors will be subjected to repeated short duration electrical pulses that induce localized heating and fatigue only in areas with constrained gridlines. The pulse ...
S. Liu, P. Wang, and H. Sun
University of Massachusetts Lowell, Lowell, MA, USA
In this paper we study the porous media coating (PMC) effect on the surface acoustic wave (SAW) sensor for chemical detection. Intensive research for SAW sensor is focused on using high surface polymer coating such as nanofibrous film to improve the sensitivity and to shorten response time for in situ trace level detections. A theoretical analysis shows the PMC can provide a higher and faster ...