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Karl H Schoenbach

from Chapel Hill, NC
Age ~82

Karl Schoenbach Phones & Addresses

  • 601 W Rosemary St UNIT 515, Chapel Hill, NC 27516 (757) 215-5792
  • 1510 Runnymede Rd, Norfolk, VA 23505 (757) 423-2339
  • 305 Brooke Ave, Norfolk, VA 23510 (757) 622-3013
  • 305 Brooke Ave APT 308, Norfolk, VA 23510 (757) 622-3013
  • 385 Brooke Ave, Norfolk, VA 23510 (757) 622-3013
  • Advance Mills, VA
  • Virginia Beach, VA
  • Charlottesville, VA

Resumes

Resumes

Karl Schoenbach Photo 1

Eminent Scholar Emeritus And Professor Emeritus Of Electrical And Computer Engineering

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Location:
Norfolk, VA
Industry:
Research
Work:
Old Dominion University
Eminent Scholar Emeritus and Professor Emeritus of Electrical and Computer Engineering
Skills:
Microsoft Office
Microsoft Excel
Microsoft Word
Powerpoint
Customer Service
Research
Outlook
English
Photoshop
Windows
Teaching
Html
Public Speaking
Languages:
German
Karl Schoenbach Photo 2

Professor Emeritus At Old Dominion University

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Location:
Norfolk, VA
Industry:
Higher Education
Work:
Texas Tech University 1980 - 1985
Assistant and Associate Professor

Old Dominion University 1980 - 1985
Professor Emeritus at Old Dominion University

Publications

Us Patents

Discharge Device Having Cathode With Micro Hollow Array

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US Patent:
6346770, Feb 12, 2002
Filed:
Mar 22, 2000
Appl. No.:
09/533008
Inventors:
Karl H. Schoenbach - Norfolk VA
Wojciech W. Byszewski - Boston MA
Frank E. Peterkin - Norfolk VA
Amin N. Dharamsi - Virginia Beach VA
Assignee:
Osram Sylvania, Inc. - Danvers MA
Old Dominion University - Norfolk VA
International Classification:
H01J 6106
US Classification:
313491, 313574, 313618, 313631, 313356
Abstract:
A discharge device for operation in a gas at a prescribed pressure includes a cathode having a plurality of micro hollows therein, and an anode spaced from the cathode. Each of the micro hollows has dimensions selected to produce a micro hollow discharge at the prescribed pressure. Preferably, each of the micro hollows has a cross-sectional dimension that is on the order of the mean free path of electrons in the gas. Electrical energy is coupled to the cathode and the anode at a voltage and current for producing micro hollow discharges in each of the micro hollows in the cathode. The discharge device may include a discharge chamber for maintaining the prescribed pressure. A dielectric layer may be disposed on the cathode when the spacing between the cathode and the anode is greater than about the mean free path of electrons in the gas. Applications of the discharge device include fluorescent lamps, excimer lamps, flat fluorescent light sources, miniature gas lasers, electron sources and ion sources.

Direct Current High-Pressure Glow Discharges

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US Patent:
6433480, Aug 13, 2002
Filed:
May 27, 2000
Appl. No.:
09/579875
Inventors:
Robert H. Stark - Norfolk VA
Karl H. Schoenbach - Norfolk VA
Assignee:
Old Dominion University - Norfolk VA
International Classification:
H01J 6104
US Classification:
313631, 313306
Abstract:
This invention improves the stability and control of high-pressure glow discharges by means of a microhllow cathode discharge. The microhollow cathode discharge, which is sustained between two closely spaced electrodes with an opening formed in the electrodes, serves as a plasma cathode for the high-pressure glow. Small variations in the microhollow cathode discharge voltage generate large variations in the microhollow cathode discharge current and consequently in the glow discharge current. In this mode of operation the electrical characteristic of this invention resembles that of a vacuum triode. Using the microhollow cathode discharge as a plasma cathode, stable, dc discharges in argon up to atmospheric pressures can be generated. Additionally, parallel operation of these discharges allows for the generation of large volume plasmas at high gas pressure through superposition of individual glow discharges. Thus, this invention allows simultaneous generation of relatively high electron densities at relatively low temperatures with stable, direct current, homogenous glow discharge plasma at relatively high pressure.

Discharge Device Having Cathode With Micro Hollow Array

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US Patent:
6518692, Feb 11, 2003
Filed:
Oct 31, 2001
Appl. No.:
09/999109
Inventors:
Karl H. Schoenbach - Norfolk VA
Wojciech W. Byszewski - Boston MA
Frank E. Peterkin - Norfolk VA
Assignee:
Old Dominion University - Norfolk VA
OSRAM Sylvania, Inc. - Danvers MA
International Classification:
H01J 6106
US Classification:
313356, 313574, 313618, 313632
Abstract:
A discharge device for operation in a gas at a prescribed pressure includes a cathode having a plurality of micro hollows therein, and an anode spaced from the cathode. Each of the micro hollows has dimensions selected to produce a micro hollow discharge at the prescribed pressure. Preferably, each of the micro hollows has a cross-sectional dimension that is on the order of the mean free path of electrons in the gas. Electrical energy is coupled to the cathode and the anode at a voltage and current for producing micro hollow discharges in each of the micro hollows in the cathode. The discharge device may include a discharge chamber for maintaining the prescribed pressure. A dielectric layer may be disposed on the cathode when the spacing between the cathode and the anode is greater than about the mean free path of electrons in the gas. Applications of the discharge device include fluorescent lamps, excimer lamps, flat fluorescent light sources, miniature gas lasers, electron sources and ion sources.

Monochromatic Vacuum Ultraviolet Light Source For Photolithography Applications Based On A High-Pressure Microhollow Cathode Discharge

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US Patent:
6703771, Mar 9, 2004
Filed:
Jun 7, 2001
Appl. No.:
09/876238
Inventors:
Kurt F. Becker - New York NY
Peter F. Kurunczi - Jamaica NY
Karl H. Schoenbach - Norfolk VA
Assignee:
Trustees of Stevens Institute of Technology - Hoboken NJ
International Classification:
H01J 188
US Classification:
313250, 313572, 313574, 313618, 313637, 313640, 313641, 313642
Abstract:
A light source with a sealed, light-transmissive tube filled with high pressure gases or high pressure gas mixtures and a microhollow cathode (MHC) discharge capable of excimer production are provided.

Device And Method For Gas Treatment Using Pulsed Corona Discharges

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US Patent:
7298092, Nov 20, 2007
Filed:
Sep 28, 2005
Appl. No.:
11/238072
Inventors:
Muhammad Arif Malik - Norfolk VA, US
Karl J. Schoenbach - Norfolk VA, US
Assignee:
Old Dominion University Research Foundation - Norfolk VA
International Classification:
H01J 7/24
US Classification:
31511191, 31511101, 204164
Abstract:
A novel plasma reactor is provided that includes a discharge chamber with dimensional characteristics and configuration of dielectric and electrodes that optimize efficiency based on the characteristics of the corona discharge streamers generated. Upon application of a pulsed high voltage potential, the discharge chamber enables formation of plasma where surface streamers play a greater role in the overall energy density of the discharge chamber than gas streamers. The formation of gas streamers is constrained. Because surface streamers have a higher energy density, the present invention is able to achieve improved energy efficiency while preserving effectiveness for gas treatment.

Micro-Discharge Devices And Applications

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US Patent:
7439663, Oct 21, 2008
Filed:
Dec 29, 2003
Appl. No.:
10/747296
Inventors:
James Randall Cooper - San Diego CA, US
Karl H. Schoenbach - Norfolk VA, US
Assignee:
Ultraviolet Sciences, Inc. - San Diego CA
International Classification:
H01J 1/00
US Classification:
313356
Abstract:
A high pressure gas discharge device and methods of using the device as a UV gas discharge light source are disclosed. The device has a cathode covered partially with a dielectric layer which separates the cathode from an anode. A discharge device utilizes one or more microhollows in the uncovered part of the cathode. Methods of utilizing the discharge devise as a gas discharge light source for producing ultrapure water.

Activation Of Calcium-Mediated Cell Functions In Cells And Tissues, Including Aggregation Of Human Platelets. By Nanosecond Pulsed Electric Fields

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US Patent:
7565201, Jul 21, 2009
Filed:
Dec 19, 2005
Appl. No.:
11/305121
Inventors:
Peter F. Blackmore - Norfolk VA, US
Stephen J. Beebe - Norfolk VA, US
E. Stephen Buescher - Virginia Beach VA, US
Karl H. Schoenbach - Norfolk VA, US
Assignee:
Eastern Virginia Medical School - Norfolk VA
Old Dominion University - Norfolk VA
International Classification:
A61N 1/40
US Classification:
607 50, 607 72
Abstract:
Methods for inducing calcium mobilization in cells through the application of nanosecond pulsed electric fields (“nsPEFs”) are provided. The invention also provides a method of increasing intracellular calcium in cells through the application of nsPEFs. In one embodiment of the invention, the cells are human platelets, whereby activation and aggregation of the platelets is induced. Methods for treating an injury, trauma, or loss of blood in a subject, through the application of nsPEFs are also provided.

Method And Device For Creating A Micro Plasma Jet

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US Patent:
7572998, Aug 11, 2009
Filed:
May 31, 2005
Appl. No.:
11/141723
Inventors:
Juergen Friedrich Kolb - Norfolk VA, US
Karl H. Schoenbach - Norfolk VA, US
International Classification:
B23K 10/00
US Classification:
2191215, 21912152, 21912148, 313631, 31511121
Abstract:
A microhollow cathode discharge assembly capable of generating a low temperature, atmospheric pressure plasma micro jet is disclosed. The microhollow assembly has at two electrodes: an anode and a cathode separated by a dielectric. A microhollow gas passage is disposed through the three layers, preferably in a taper such that the area at the anode is larger than the area at the cathode. When a potential is placed across the electrodes and a gas is directed through the gas passage into the anode and out the cathode, along the tapered direction, then a low temperature micro plasma jet can be created at atmospheric pressure.

Isbn (Books And Publications)

Non-Equilibrium Air Plasmas At Atmospheric Pressure

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Author

Karl H. Schoenbach

ISBN #

0750309628

Low Temperature Plasma Physics: Fundamental Aspects and Applications

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Author

Karl H. Schoenbach

ISBN #

3527288872

Low Temperature Plasmas: Fundamentals, Technologies and Techniques

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Author

Karl H. Schoenbach

ISBN #

3527406735

Karl H Schoenbach from Chapel Hill, NC, age ~82 Get Report