Fabrication of 3C-silicon carbide membranes: Towards development of novel microdevices for biomedical applications

2012 ◽  
Author(s):  
N.F. Mohd Nasir ◽  
C.M. Shah ◽  
P.W. Leech ◽  
G.K. Reeves ◽  
E. Pirogova ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Biomedical Applications

scholarly journals Modular Marx Generator Based on SiC-MOSFET Generating Adjustable Rectangular Pulses

Energies ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3492
Author(s):  
Yahia Achour ◽  
Jacek Starzyński ◽  
Jacek Rąbkowski
Keyword(s):  
Silicon Carbide ◽  
Repetition Rate ◽  
Pulse Width ◽  
Biomedical Applications ◽  
Living Cells ◽  
Marx Generator ◽  
Electrical Field ◽  
Rectangular Shape ◽  
Overall Performance ◽  
Pulsed Electrical Field

The paper introduces a new design of Marx generator based on modular stages using Silicon Carbide MOSFETs (SiC-MOSFET) aimed to be used in biomedical applications. In this process, living cells are treated with intense nanosecond Pulsed Electrical Field (nsPEF). The electric field dose should be controlled by adjusting the pulse parameters such as amplitude, repetition rate and pulse-width. For this purpose, the structure of the proposed generator enables negative pulses with a quasi-rectangular shape, controllable amplitude, pulse-width and repetition-rate. A complete simulation study was conducted in ANSYS-Simplorer to verify the overall performance. A compact, modular prototype of Marx generator was designed with 1.7 kV rated SiC-MOSFETs and, finally, a set of experiments confirmed all expected features.

Manufacturing and full characterization of silicon carbide-based multi-sensor micro-probes for biomedical applications

2007 ◽  
Vol 38 (3) ◽  
pp. 406-415 ◽  
Author(s):  
Gemma Gabriel ◽  
Ivan Erill ◽  
Jaume Caro ◽  
Rodrigo Gómez ◽  
Dolors Riera ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Biomedical Applications ◽  
Full Characterization

SiC for Biomedical Applications

2016 ◽  
Vol 858 ◽  
pp. 1010-1014 ◽  
Author(s):  
Stephen E. Saddow ◽  
Christopher L. Frewin ◽  
Fabiola Araujo Cespedes ◽  
Marioa Gazziro ◽  
Evans Bernadin ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Biomedical Applications ◽  
Glucose Monitoring ◽  
Wide Band ◽  
Neural Interfaces ◽  
Free Standing ◽  
Wide Band Gap ◽  
Custom Made ◽  
Biological World ◽  
Machine Interface

Silicon carbide is a well-known wide-band gap semiconductor traditionally used in power electronics and solid-state lighting due to its extremely low intrinsic carrier concentration and high thermal conductivity. What is only recently being discovered is that it possesses excellent compatibility within the biological world. Since publication of the first edition of Silicon Carbide Biotechnology: A Biocompatible Semiconductor for Advanced Biomedical Devices and Applications five years ago [1], significant progress has been made on numerous research and development fronts. In this paper three very promising developments are briefly highlighted – progress towards the realization of a continuous glucose monitoring system, implantable neural interfaces made from free-standing 3C-SiC, and a custom-made low-power ‘wireless capable’ four channel neural recording chip for brain-machine interface applications.

Silicon Carbide Materials for Biomedical Applications

2014 ◽  
pp. 153-207 ◽  
Author(s):  
C. L. Frewin ◽  
C. Coletti ◽  
J. J. Register ◽  
M. Nezafati ◽  
S. Thomas ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Biomedical Applications

Silicon Carbide-Based Nanowires for Biomedical Applications

2016 ◽  
pp. 311-342 ◽  
Author(s):  
F. Rossi ◽  
P. Lagonegro ◽  
M. Negri ◽  
F. Fabbri ◽  
G. Salviati ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Biomedical Applications

Irradiation behavior of pyrolytic silicon carbide

1983 ◽  
Vol 41 ◽  
pp. 72-73
Author(s):  
R. J. Lauf
Keyword(s):  
Silicon Carbide ◽  
Fission Products ◽  
Thermodynamics And Kinetics ◽  
Neutron Fluences ◽  
Fuel Particles ◽  
Sic Coatings ◽  
Irradiation Behavior ◽  
Kinetics Of ◽  
Htgr Fuel

Fuel particles for the High-Temperature Gas-Cooled Reactor (HTGR) contain a layer of pyrolytic silicon carbide to act as a miniature pressure vessel and primary fission product barrier. Optimization of the SiC with respect to fuel performance involves four areas of study: (a) characterization of as-deposited SiC coatings; (b) thermodynamics and kinetics of chemical reactions between SiC and fission products; (c) irradiation behavior of SiC in the absence of fission products; and (d) combined effects of irradiation and fission products. This paper reports the behavior of SiC deposited on inert microspheres and irradiated to fast neutron fluences typical of HTGR fuel at end-of-life.

Microstructural Evaluation of Silicon Carbide Whisker Reinforced Alumina Fabricated with Carbon-Coated Whiskers

1991 ◽  
Vol 49 ◽  
pp. 920-921
Author(s):  
K. B. Alexander ◽  
P. F. Becher
Keyword(s):  
Silicon Carbide ◽  
High Resolution Electron Microscopy ◽  
Ceramic Composites ◽  
Interface Debonding ◽  
Resolution Electron ◽  
Microstructural Evaluation ◽  
Carbon Coated ◽  
Electron Energy Loss ◽  
Interfacial Films ◽  
Debonding Process

The presence of interfacial films at the whisker-matrix interface can significantly influence the fracture toughness of ceramic composites. The film may alter the interface debonding process though changes in either the interfacial fracture energy or the residual stress at the interface. In addition, the films may affect the whisker pullout process through the frictional sliding coefficients or the extent of mechanical interlocking of the interface due to the whisker surface topography.Composites containing ACMC silicon carbide whiskers (SiCw) which had been coated with 5-10 nm of carbon and Tokai whiskers coated with 2 nm of carbon have been examined. High resolution electron microscopy (HREM) images of the interface were obtained with a JEOL 4000EX electron microscope. The whisker geometry used for HREM imaging is described in Reference 2. High spatial resolution (< 2-nm-diameter probe) parallel-collection electron energy loss spectroscopy (PEELS) measurements were obtained with a Philips EM400T/FEG microscope equipped with a Gatan Model 666 spectrometer.

Applications of Scanning Microscopy in Biomedical Research

1968 ◽  
Vol 26 ◽  
pp. 354-355
Author(s):  
T. L. Hayes
Keyword(s):  
Information Content ◽  
Biomedical Research ◽  
Biomedical Applications ◽  
Three Dimensional ◽  
Dental Enamel ◽  
Resolving Power ◽  
Whole Mount ◽  
Two Parameters ◽  
Content Information ◽  
Sectioned Tissue

Biomedical applications of the scanning electron microscope (SEM) have increased in number quite rapidly over the last several years. Studies have been made of cells, whole mount tissue, sectioned tissue, particles, human chromosomes, microorganisms, dental enamel and skeletal material. Many of the advantages of using this instrument for such investigations come from its ability to produce images that are high in information content. Information about the chemical make-up of the specimen, its electrical properties and its three dimensional architecture all may be represented in such images. Since the biological system is distinctive in its chemistry and often spatially scaled to the resolving power of the SEM, these images are particularly useful in biomedical research.In any form of microscopy there are two parameters that together determine the usefulness of the image. One parameter is the size of the volume being studied or resolving power of the instrument and the other is the amount of information about this volume that is displayed in the image. Both parameters are important in describing the performance of a microscope. The light microscope image, for example, is rich in information content (chemical, spatial, living specimen, etc.) but is very limited in resolving power.

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