This paper proposes the design of a biosensor to characterize the dielectric and conductive properties of biological materials (for example blood or water) by impedance spectroscopy. Particularly, its design optimized the geometric structure interdigitated electrodes. This optimization allows extending the frequency range of measurement by reducing the polarization effect. Polarization effect i...

In this study the geometrical optimization of monolithically integrated solar cells into serially connected solar modules is reported. Based on the experimental determination of electrodes0 sheet and intermittent contact resistances, the overall series resistance of individual solar cells and interconnected solar modules is calculated. Taking a constant photocurrent generation density into acco...

The inception voltage of the positive corona discharges (CIV) in a typical wire-cylinder electrode arrangement in air, under high voltage dc application, has been studied by implementing the Finite Element Analysis (FEA). Numerical analysis has been carried out on the electric field intensity, along the wire-cylinder gap axis, in order to determine the inception voltage of each air gap and defi...

A map for an autonomous mobile robot (AMR) in an indoor environment for the purpose of continuous position and orientation estimation is discussed. Unlike many other approaches, this map is not based on geometrical primitives like lines and polygons. An algorithm is shown, where the sensor data of a laser range finder can be used to establish this map without a geometrical interpretation of the...

A manufacturing process has been developed for a microelectrode array that can he used for stimulation of the visual cortex to provide an effective sense of sighf to the blind. The first prototype merges sixteen 316L stainless sfeel electrodes on a 4x4 array. Several arrays can then he assembled together in a mosaic configuration to cover a large portion of the visual area. To reduce brain inju...

Calcium imaging is a versatile experimental approach capable of resolving single neurons with single-cell spatial resolution in the brain. Electrophysiological recordings provide high temporal, but limited spatial resolution, because of the geometrical inaccessibility of the brain. An approach that integrates the advantages of both techniques could provide new insights into functions of neural ...

BACKGROUND We developed and evaluated a novel system for guiding radiofrequency catheter ablation therapy of ventricular tachycardia. This guidance system employs an inverse solution guidance algorithm (ISGA) using a single equivalent moving dipole (SEMD) localization method. The method and system were evaluated in both a saline tank phantom model and in vivo animal (swine) experiments. METHO...

This paper presents computational results of sound pressure distributions and transfer characteristics for a large number of vocal-tract models which contain geometrical perturbations. A small change of the vocal-tract shape is regarded as a geometrical perturbation of the axis position of each vocal-tract section. Computation of the acoustic field in the models are performed using higherorder ...

Arrays of nanometer-scale electrodes were prepared by cyanide-etching of hexadecanethiol monolayers confined to Cu-underpotential deposition (UPD)-modified Au(111). This process results in fabrication of arrays having average electrode radii ranging from 6 to 80 nm. The arrays were independently characterized by cyclic voltammetry and scanning tunneling microscopy (STM). A recessed disk model w...

Subdural hematomas (SDH) in patients with implanted deep brain stimulating (DBS) electrodes are rare. Only a handful of cases have been reported in the literature. No clear management guidelines exist regarding the management of the hematoma and the existing electrodes. We describe a 68-year-old female with bilateral DBS electrodes, who presented with acute, severe hemiparesis due to a large su...