T. Schlegl, and H. Zangl
Graz University of Technology
State of the art proximity sensors are most often based on optical or tactile methods. Although these sensor systems are widely used (e.g. clamping protection) the reveal several drawbacks. Most optical sensors need a line of side whereas tactile sensors cannot be used to determine a distance to an approaching object. Capacitive sensing technology has proven to be an interesting alternative to ...
L. Velmanickam , K. Nawarathna ,
 Department of Electrical and Computer Engineering, North Dakota State University, Fargo, ND, USA
The isolation of target cells from biological samples such as serum, urine or blood in high-throughput manner without contamination with other cells is the starting point of developing effective therapy for many diseases. Currently available methods for cell isolation/separation require extra labeling. Furthermore, separating target cells using current methods do not produce pure target cell ...
H. Cabrera , D. A. Zanin , L. G. De Pietro , A. Vindigni , U. Ramsperger , D. Pescia ,
 Laboratory for Solid State Physics, Microstructure Research, ETH Zurich, Zurich, Switzerland
The recently developed technique Scanning Tunneling Microscopy in the Field Emission regime (STM FE) is based on the Russell Young's topografiner technology. The set-up is a no contacting device consisting of a sharp tip approached vertically to a conducting surface at variable distances and biased with a small voltage with respect to the surface. The system builds a junction across which ...
A. Rosell, and G. Persson
Volvo Aero Corporation, Trollhättan, Sweden
Chalmers University of Technology, Göteborg, Sweden
Interaction between the probe and a defect in eddy current non-destructive evaluation is studied. Evaluation of sensor signal response is the basis for the calculation. In this work a differential sensor is considered and the problem regarded here is problem 8 from the testing of electromagnetic analysis methods (TEAM) workshops. The truncation, referring to the position of the outer ...
Royal Institute of Technology
School of Engineering
Electromagnetic Engineering Lab
There is a considerable world-wide interest among lightning protection engineers and designers on the improvement of the standard procedures to assess the location of the most vulnerable places on complex structures to be struck by lightning flashes. This paper presents the implementation of the Self-consistent Lightning Interception Model in Matlab by using the COMSOL Multiphysics 3.5 ...
R. Cunrath, M. Wickert
Fraunhofer EMI, Efringen-Kirchen, Germany
Fraunhofer EMI, Freiburg im Breisgau, Germany
Research at Fraunhofer EMI addresses the response of materials in extreme dynamic loads. Besides mechanical or thermal loads, intense electric pulse currents also represent an extreme dynamic load. Experimentally, metallic samples, mainly thick wires, were electro-mechanically loaded with currents up to 400 kA. For this purpose, a test rig containing a high-voltage pulsed power supply and high ...
J. T. Fong ,
 National Institute of Standards & Technology, Gaithersbug, MD, USA
1. INTRODUCTION. In a magnetic resonance imaging (MRI) system (see Fig. 1), it is necessary to excite the nuclei of a patient into coherent precession for imaging. This requires coupling between the nuclei and a source of radio frequency (RF) power (the transmitter). To receive a meaningful signal, one also needs to couple the nuclei to an external circuitry (the receiver). These two ...
H. Cabrera, D.A. Zanin, L.G. De Pietro, A. Vindigni, U. Ramsperger, D. Pescia
Laboratory for Solid State Physics, ETH Zurich, Zurich, Switzerland
A sharp tip approached perpendicular to a conducting surface at subnanometer distances and biased with a small voltage builds a junction across which electrons can be transferred from the tip apex to the nearest surface atom by direct quantum mechanical tunneling. Such a junction is used e.g. in Scanning Tunneling Microscopy (STM). When the distance d between tip and collector is increased ...
Y. Ou , A. Jaquins-Gerstl , S. G. Weber ,
 Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, USA
The brain is a heterogeneous porous medium with regions of anisotropy. Measurements of tortuosity (λ) showed that diffusion in gray matter (e.g. striatum) is isotropic (λ = 1.65), whereas it is anisotropic in white matter (e.g. corpus callosum) (λparallel = 1.38, λperpendicular = 1.80)[1-2]. Pressure-driven convection-enhanced delivery (CED) of macromolecules (e.g. drugs) was first described in ...
Highest Pulsed Magnetic Fields in Science and Technology, Assisted by Advanced Finite-Element Simulation
Forschungszentrum Dresden-Rossendorf, Germany
Thomas Herrmannsdörfer got his PhD in experimental physics from the University of Bayreuth in 1994. In 1995, he received the Research Award of the Emil-Warburg-Foundation while he worked at the DFG-Graduiertenkolleg Bayreuth. From 1995 – 1998 he worked as a scientist at Hahn-Meitner-Institute (HMI) Berlin. Since 1998, he has worked at Forschungszentrum Dresden ...