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Sehen Sie sich die Kollektion für die COMSOL Conference 2024 an
For low-field NMR (Nuclear magnetic resonance), NdFeB permanent magnet arrangements are proposed to provide the static polarizing magnetic field. Especially a parallel and a circular arrangement of the permanent magnets, iron yokes and small shim magnets were tested and improved by ... Mehr lesen
Electrical Stimulation is widely used today for Deep Brain Stimulation treatments and retinal prostheses. The Electrical Double Layer formed at the interface between the electrode surface and the extracellular medium is considered thru the linear Helmholtz model and the nonlinear more ... Mehr lesen
A finite element model of a polymer electrolyte membrane fuel cell (PEMFC) is described in this paper. We divide the PEMFC into two separate and parallel 2D regions which are connected by the 1D regions representing the membrane electrode assembly (MEA). COMSOL Multiphysics® was used as ... Mehr lesen
In this paper, the gross electrical characterization of biological cells on porous substrate is analyzed using COMSOL Multiphysics®. Dynamic electrical characterization during cell growth is used as a non-invasive and label-free technique to understand the growth kinetics of cells. It is ... Mehr lesen
The feasibility of phase-sensitive detection of angular-rates using bi-directional orbiting piezoresonators suspended by thick annular springs with thin-film aluminium nitride piezoactuators on top of them was investigated. The ring-shaped flexures are more suitable for supporting the ... Mehr lesen
The use of plasmonic effects to dramatically enhance the electromagnetic field near the surface of a metallic nanostructured surface has grown into a large research area in the effort to take advantage of the surface enhanced field. In this paper the electromagnetic field near a nano ... Mehr lesen
This work presents a method to calculate AC losses in thin conductors such as the commercially available second generation superconducting wires through a multiscale meshing technique. The main idea is to use large aspect ratio elements to accurately simulate thin material layers. For a ... Mehr lesen
Cantilever beam-type transducers have been in great demand and explored widely in the recent years, typically in thin film form because of their sensor and actuator applications. The piezoelectric cantilever is the most preferred structure employed in technological applications. ... Mehr lesen
Ion-selective membranes can be used in lab-on-a-chip devices for various portable applications in this field. These devices can be used as concentrators for analytical chemistry and for micro-scale filtration. Here, a binary aqueous electrolyte solution in a microchannel has a potential ... Mehr lesen
Rick has a BS in Physics, a ScM in Geological Sciences, and a PhD in Physics. He worked at Air Force Geophysics Laboratory, Conoco Petroleum Exploration Research, and, since 1989, has been at the DuPont Experimental Station. In this industrial setting, Rick has had opportunity to work on ... Mehr lesen