J. Yoo, H. Soh, J. Choi, S. Song
Department of Mechanical Engineering, Yonsei University, Korea
Hyundai Motor Co., Korea
Samsung Electronics Co., Ltd., Korea
Mando Co., Korea
Nanoscale structural analysis and design is presented. All the simulations are carried out using a finite element solver and optimization is performed using parameter and topology optimization schemes. It is concluded that COMSOL is effective for analysis and design of nanoscale structure design in electromagnetic field and it may be combined with several optimization methods to improve system ...
Pryor Knowledge Systems, Inc., Bloomfield Hills, MI, USA
COMSOL Multiphysics software, when properly configured, can readily solve modeling problems in the laminar flow regime using the standard Navier-Stokes equations or in the fully turbulent flow regime using the kappa-epsilon model. Failure to solve a particular model is typically manifested by instability in the calculation and a failure of the model to converge. This paper presents a new ...
T. Satyanarayana, V. Sai Pavan Rajesh
NPMASS Centre, Lakireddy Bali Reddy Autonomous Engineering College, Mylavaram, Andhra Pradesh, India
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 ...
Pryor Knowledge Systems, Inc. (COMSOL Certified Consultant), Bloomfield Hills, Michigan, USA
Materials and their related properties are intrinsically fundamental to the creation, development and solution of viable exploratory models when using numerical analysis software. In many cases, simply determining the location, availability and relative accuracy of the necessary material parameters for the physical behavior of even commonly employed design materials can be very difficult and ...
N. Semmar, M. Fournier, P. S. Alleaume , A. Seigneurin , , ,
GREMI-UMR7344, CNRS/University of Orléans, Orléans, France
Collegium Sciences et Techniques, Orléans, France
ST Microelectronics Tours SAS, Tours, France
Usually, in integrated circuits, the chip is brazed on leadframe and then, a polymer resin is molded around to create the packaging. On the first hand, the molding process at high temperatures will induce thermomechanical stress on the chip. As the leadframe, the chip and the braze have all different thermoelastic properties, these stress can be critical for the chip connections. To ...
Experimentally Matched Finite Element Modeling of Thermally Actuated SOI MEMS Micro-Grippers Using COMSOL Multiphysics
M. Guvench, and J. Crosby
University of Southern Maine, Gorham, Maine, USA
In “Micro-Electro-Mechanical-Systems” shortly known as MEMS, one of the most important and effective principle of creating transduction of electrical power to displacement force is thermal expansion. A slim beam of MEMS material, typically Silicon, is heated by the application of electrical current via Joule heating; it expands and creates motion. In the design of many MEMS devices ...
F. Wittbrach, A. Weddemann, A. Auge, and A. Hütten
Department of Physics, Bielefeld University, Germany
It is possible to control the motion of magnetic beads using a combination of hydrodynamic and electromagnetic forces. In this work, we investigate the possibility to manipulate the motion of beads with different magnetic moments in a special microfluidic structure so as to separate them. We also experimentally prove that this structure is a suitable device to separate beads and show that the ...
N. Bhalla, S. Li, and D. Chung
Chung Yuan Christian University, Chungli,Taiwan
National Tsing Hua University, Hsinchu, Taiwan
Investigation in this paper aims at performing Mechanical Stress Strain analysis, Thermal, Piezoresistive and Piezoeletric analysis of Silicon Structures using COMSOL. The simulation results have been cross checked by mathematical calculation.
B. Mishra, M. P. S. Naidu, J. Raj, and Z. C. Alex
This paper presents a novel design of a RF MEMS Switch. The switch is a capacitive type, which is actuated by an electrostatic force. The structure of the switch consists of a CPW (coplanar waveguides) transmission lines and a suspended membrane. The modelling of switch is done using COMSOL software and RF characteristics is found out by using CST software.
G. Zhang, S. Bearden
Clemson University, Clemson, SC, USA
It is necessary to understand and control nanopore behavior in order to develop biosensors for a variety of applications including DNA sequencing. The fluidics of nanopore devices we fabricated exhibits a range of interesting phenomena, such as enhanced conductance and current rectification. By electrically biasing nanopores, we were able to actively control the nanopore conductance in real time ...