Optical and Electronic Materials Unit
National Institute for Materials Science
A single-crystal diamond NEMS switch was fabricated while batch production of SCD MEMS/NEMS structures were developed. The diamond NEMS switches exhibit high performance with respect to high controllability, high reproducibility, and good reliability. Modeling and simulations were made that were consistent with experiments.
Y. Yao?and K. Sakoda
National Institute for Materials Science
University of Tsukuba
This paper showed: * The electronic states of core-shell tetrapod with various shell thickness were calculated. Lowest 20 electron and hole wave functions have A1 or T2 symmetry. * At t=1.2 nm, the carriers separation is not serious, core-shell tetrapod is not apparent type II heterostructure. * Exciton states were investigated as a function of t. For large t, the lowest exciton state has T2 ...
Light Scattering Simulation of Nano-objects on the Surface of Silicon Wafers by 3D Finite Element Method
Y. Oshikane, T. Higashi, N. Taniguchi, M. Nakano, and H. Inoue
Dept. of Prec. Sci. and Technology
Grad. School of Eng.
Nanotechnology is rated as a key technology of the 21st century. In the field of nano-optics already at present, state-of-the-art scientific experiments and industrial applications exhibit nanometer to sub-nanometer design tolerances. This motivates the development and application of fast and accurate simulation tools for these fields or electromagnetic (EM) field.
A. Takezawa, and M. Kitamura
Division of Mechanical System and Applied Mechanics
Faculty of Engineering
This paper discusses a geometrical optimization method for thermoelectric generators. Our method provides the optimized geometry in accord with various arbitrary conditions such as types of materials, volume of materials, temperatures of installation position, and shape of installation position. It has the potential to contribute to improving thermoelectric devices in supporting design ...
A. Beaucamp, R. Freeman, and Y. Namba
Chubu University, Kasugai, Japan
Zeeko Ltd, Coalville, UK
In the Fluid Jet Method, a polishing fluid is compressed and delivered through a nozzle, allowing the spot area to become continuously replenished with abrasives and coolant. Process parameters include: Abrasive type and concentration, Inlet pressure, Nozzle diameter, Impingement angle, Surface feed of spot. The simulation uses COMSOL’s turbulent 2-phase flow model, with the incompressible ...
Topology Optimization of Dielectric Metamaterials Based on the Level Set Method Using COMSOL Multiphysics
M. Otomori, and S. Nishiwaki
This presentation shows a level set-based topology optimization method for the structural design of negative permeability dielectric metamaterials incorporating the level set boundary expression based on the concept of the phase field method, and its optimization algorithm implemented by COMSOL Multiphysics. Furthermore, several design examples are provided to confirm the usefulness of the ...
Tohoku Institute of Technology
This paper is in Japanese.
J. Muraoka, and T. Suzuki
Yamagata Research Institute of Technology
The traveling wave ultrasonic vibration disks for dispersion of particles were designed by using of FEM analysis. The vibration disks are required specific vibration pattern, which contains three nodal lines. The vibration disk thickness was calculated to be matched the resonance frequency of bolted langevin type transducer and the specific vibration pattern. The alignment of the transducer was ...
S. Raveendran, S. Sukuvihar, S. Kumar, and T. Maekawa
• Bionanotechnology is a stream of modern science that deals with the study of biotechnology & nanotechnology applications. • Drug delivery applications as a key area of research attains more critical approaches where the role of nanoparticles are inevitable. • Biocompatible, non-cytotoxic hybrid mauran- chitosan nanoparticles has been synthesized and the drug release kinetics were ...
In recent years, optical manipulation using optical radiation pressure has been widely studied. In this study, the radiation pressure exerted on various kinds of microscopic objects with different laser beams was evaluated by COMSOL Multiphysics software. By changing beam shapes, microscopic objects can be trapped and rotated. This paper is in Japanese.