Patents by Inventor Todd A. Sulchek
Todd A. Sulchek has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20180318837Abstract: Microfluidic devices for cell sorting or cell fractionation are disclosed. A microfluidic device can comprise one or more inlets, a first wall and a second wall, and two or more outlets. The first and second walls can be substantially planar to each other and the first wall having can have a plurality of ridges protruding from the first wall and defining a compression gap between the ridge and a surface of the second wall. The microfluidic device can also be a cell sorting device for sorting a plurality of cells based on one or more biophysical cellular properties including size, elasticity, viscosity, and/or viscoelasticity wherein the cells are subjected to one or more compressions due to the compression gap. Also disclosed are methods for cell sorting based on a variety of biophysical cellular properties.Type: ApplicationFiled: November 9, 2016Publication date: November 8, 2018Inventors: Todd SULCHEK, Alexander ALEXEEV, Gonghao WANG
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Publication number: 20170269052Abstract: A disclosed chemical detection system for detecting a target material, such as an explosive material, can include a cantilevered probe, a probe heater coupled to the cantilevered probe, and a piezoelectric element disposed on the cantilevered probe. The piezoelectric element can be configured as a detector and/or an actuator. Detection can include, for example, detecting a movement of the cantilevered probe or a property of the cantilevered probe. The movement or a change in the property of the cantilevered probe can occur, for example, by adsorption of the target material, desorption of the target material, reaction of the target material and/or phase change of the target material. Examples of detectable movements and properties include temperature shifts, impedance shifts, and resonant frequency shifts of the cantilevered probe. The overall chemical detection system can be incorporated, for example, into a handheld explosive material detection system.Type: ApplicationFiled: June 5, 2017Publication date: September 21, 2017Applicant: Board of Regents of the Nevada System of Higher Education, on behalf of the University of Nevada,Inventors: Jesse D. Adams, Todd A. Sulchek, Stuart C. Feigin
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Patent number: 9702861Abstract: A disclosed chemical detection system for detecting a target material, such as an explosive material, can include a cantilevered probe, a probe heater coupled to the cantilevered probe, and a piezoelectric element disposed on the cantilevered probe. The piezoelectric element can be configured as a detector and/or an actuator. Detection can include, for example, detecting a movement of the cantilevered probe or a property of the cantilevered probe. The movement or a change in the property of the cantilevered probe can occur, for example, by adsorption of the target material, desorption of the target material, reaction of the target material and/or phase change of the target material. Examples of detectable movements and properties include temperature shifts, impedance shifts, and resonant frequency shifts of the cantilevered probe. The overall chemical detection system can be incorporated, for example, into a handheld explosive material detection system.Type: GrantFiled: March 10, 2015Date of Patent: July 11, 2017Assignee: Board of Regents of the Nevada System of Higher Education, on behalf of the University of Nevada, RenoInventors: Jesse D. Adams, Todd A. Sulchek, Stuart C. Feigin
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Publication number: 20160341765Abstract: The invention provides a liquid cell for an atomic force microscope. The liquid cell includes a liquid cell housing with an internal cavity to contain a fluid, a plurality of conductive feedthroughs traversing the liquid cell housing between the internal cavity and a dry side of the liquid cell, a cantilevered probe coupled to the liquid cell housing, and a piezoelectric drive element disposed on the cantilevered probe. The cantilevered probe is actuated when a drive voltage is applied to the piezoelectric drive element through at least one of the conductive feedthroughs. A method of imaging an object in a liquid medium and a method of sensing a target species with the liquid cell are also disclosed.Type: ApplicationFiled: August 3, 2016Publication date: November 24, 2016Applicant: Board of Regents of the Nevada System of Higher Education, on Behalf of the Univ. of Nevada, RenoInventors: Jesse D. Adams, Benjamin S. Rogers, Todd A. Sulchek
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Publication number: 20150177216Abstract: A disclosed chemical detection system for detecting a target material, such as an explosive material, can include a cantilevered probe, a probe heater coupled to the cantilevered probe, and a piezoelectric element disposed on the cantilevered probe. The piezoelectric element can be configured as a detector and/or an actuator. Detection can include, for example, detecting a movement of the cantilevered probe or a property of the cantilevered probe. The movement or a change in the property of the cantilevered probe can occur, for example, by adsorption of the target material, desorption of the target material, reaction of the target material and/or phase change of the target material. Examples of detectable movements and properties include temperature shifts, impedance shifts, and resonant frequency shifts of the cantilevered probe. The overall chemical detection system can be incorporated, for example, into a handheld explosive material detection system.Type: ApplicationFiled: March 10, 2015Publication date: June 25, 2015Applicant: Board of Regents of the Nevada System of Higher Education, on behalf of the University of NevadaInventors: Jesse D. Adams, Todd A. Sulchek, Stuart C. Feigin
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Publication number: 20140287958Abstract: The invention provides a liquid cell for an atomic force microscope. The liquid cell includes a liquid cell housing with an internal cavity to contain a fluid, a plurality of conductive feedthroughs traversing the liquid cell housing between the internal cavity and a dry side of the liquid cell, a cantilevered probe coupled to the liquid cell housing, and a piezoelectric drive element disposed on the cantilevered probe. The cantilevered probe is actuated when a drive voltage is applied to the piezoelectric drive element through at least one of the conductive feedthroughs. A method of imaging an object in a liquid medium and a method of sensing a target species with the liquid cell are also disclosed.Type: ApplicationFiled: June 9, 2014Publication date: September 25, 2014Inventors: Jesse D. Adams, Benjamin S. Rogers, Todd A. Sulchek
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Publication number: 20140219315Abstract: A disclosed chemical detection system for detecting a target material, such as an explosive material, can include a cantilevered probe, a probe heater coupled to the cantilevered probe, and a piezoelectric element disposed on the cantilevered probe. The piezoelectric element can be configured as a detector and/or an actuator. Detection can include, for example, detecting a movement of the cantilevered probe or a property of the cantilevered probe. The movement or a change in the property of the cantilevered probe can occur, for example, by adsorption of the target material, desorption of the target material, reaction of the target material and/or phase change of the target material. Examples of detectable movements and properties include temperature shifts, impedance shifts, and resonant frequency shifts of the cantilevered probe. The overall chemical detection system can be incorporated, for example, into a handheld explosive material detection system.Type: ApplicationFiled: April 22, 2014Publication date: August 7, 2014Applicant: Board of Regents of the Nevada System of Higher Education, on behalf of the University of NevadaInventors: Jesse D. Adams, Todd A. Sulchek, Stuart C. Feigin
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Patent number: 8746039Abstract: The invention provides a liquid cell for an atomic force microscope. The liquid cell includes a liquid cell housing with an internal cavity to contain a fluid, a plurality of conductive feedthroughs traversing the liquid cell housing between the internal cavity and a dry side of the liquid cell, a cantilevered probe coupled to the liquid cell housing, and a piezoelectric drive element disposed on the cantilevered probe. The cantilevered probe is actuated when a drive voltage is applied to the piezoelectric drive element through at least one of the conductive feedthroughs. A method of imaging an object in a liquid medium and a method of sensing a target species with the liquid cell are also disclosed.Type: GrantFiled: March 12, 2012Date of Patent: June 10, 2014Assignee: Board of Regents of the Nevada System of Higher Education, on behalf of the University of Nevada, RenoInventors: Jesse D. Adams, Benjamin S. Rogers, Todd A. Sulchek
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Patent number: 8713711Abstract: A disclosed chemical detection system for detecting a target material, such as an explosive material, can include a cantilevered probe, a probe heater coupled to the cantilevered probe, and a piezoelectric element disposed on the cantilevered probe. The piezoelectric element can be configured as a detector and/or an actuator. Detection can include, for example, detecting a movement of the cantilevered probe or a property of the cantilevered probe. The movement or a change in the property of the cantilevered probe can occur, for example, by adsorption of the target material, desorption of the target material, reaction of the target material and/or phase change of the target material. Examples of detectable movements and properties include temperature shifts, impedance shifts, and resonant frequency shifts of the cantilevered probe. The overall chemical detection system can be incorporated, for example, into a handheld explosive material detection system.Type: GrantFiled: March 15, 2013Date of Patent: April 29, 2014Assignee: Board of Regents of the Nevada System of Higher Education, on Behalf of the University of NevadaInventors: Jesse D. Adams, Todd A. Sulchek, Stuart C. Feigin
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Publication number: 20130116137Abstract: A disclosed chemical detection system for detecting a target material, such as an explosive material, can include a cantilevered probe, a probe heater coupled to the cantilevered probe, and a piezoelectric element disposed on the cantilevered probe. The piezoelectric element can be configured as a detector and/or an actuator. Detection can include, for example, detecting a movement of the cantilevered probe or a property of the cantilevered probe. The movement or a change in the property of the cantilevered probe can occur, for example, by adsorption of the target material, desorption of the target material, reaction of the target material and/or phase change of the target material. Examples of detectable movements and properties include temperature shifts, impedance shifts, and resonant frequency shifts of the cantilevered probe. The overall chemical detection system can be incorporated, for example, into a handheld explosive material detection system.Type: ApplicationFiled: July 2, 2012Publication date: May 9, 2013Applicant: Board of Regents of the Nevada System of Higher Education, on behalf of the University of NevadaInventors: Jesse D. Adams, Todd A. Sulchek, Stuart C. Feigin
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Patent number: 8434161Abstract: A disclosed chemical detection system for detecting a target material, such as an explosive material, can include a cantilevered probe, a probe heater coupled to the cantilevered probe, and a piezoelectric element disposed on the cantilevered probe. The piezoelectric element can be configured as a detector and/or an actuator. Detection can include, for example, detecting a movement of the cantilevered probe or a property of the cantilevered probe. The movement or a change in the property of the cantilevered probe can occur, for example, by adsorption of the target material, desorption of the target material, reaction of the target material and/or phase change of the target material. Examples of detectable movements and properties include temperature shifts, impedance shifts, and resonant frequency shifts of the cantilevered probe. The overall chemical detection system can be incorporated, for example, into a handheld explosive material detection system.Type: GrantFiled: July 2, 2012Date of Patent: April 30, 2013Assignee: Board of Regents of the Nevada System of Higher Education, on behalf of the University of NevadaInventors: Jesse D. Adams, Todd A. Sulchek, Stuart C. Feigin
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Patent number: 8434160Abstract: A disclosed chemical detection system for detecting a target material, such as an explosive material, can include a cantilevered probe, a probe heater coupled to the cantilevered probe, and a piezoelectric element disposed on the cantilevered probe. The piezoelectric element can be configured as a detector and/or an actuator. Detection can include, for example, detecting a movement of the cantilevered probe or a property of the cantilevered probe. The movement or a change in the property of the cantilevered probe can occur, for example, by adsorption of the target material, desorption of the target material, reaction of the target material and/or phase change of the target material. Examples of detectable movements and properties include temperature shifts, impedance shifts, and resonant frequency shifts of the cantilevered probe. The overall chemical detection system can be incorporated, for example, into a handheld explosive material detection system.Type: GrantFiled: July 2, 2012Date of Patent: April 30, 2013Assignee: Board of Regents of the Nevada System of Higher Education, on behalf of the University of NevadaInventors: Jesse D. Adams, Todd A. Sulchek, Stuart C. Feigin
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Publication number: 20130101466Abstract: A disclosed chemical detection system for detecting a target material, such as an explosive material, can include a cantilevered probe, a probe heater coupled to the cantilevered probe, and a piezoelectric element disposed on the cantilevered probe. The piezoelectric element can be configured as a detector and/or an actuator. Detection can include, for example, detecting a movement of the cantilevered probe or a property of the cantilevered probe. The movement or a change in the property of the cantilevered probe can occur, for example, by adsorption of the target material, desorption of the target material, reaction of the target material and/or phase change of the target material. Examples of detectable movements and properties include temperature shifts, impedance shifts, and resonant frequency shifts of the cantilevered probe. The overall chemical detection system can be incorporated, for example, into a handheld explosive material detection system.Type: ApplicationFiled: July 2, 2012Publication date: April 25, 2013Applicant: Board of Regents of the Nevada System of Higher Education, on behalf of the University of NevadaInventors: Jesse D. Adams, Todd A. Sulchek, Stuart C. Feigin
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Patent number: 8356714Abstract: An apparatus for separating particles includes a first planar wall and a spaced apart second planar wall parallel to the first planar wall. The first planar wall and the second planar wall define a passage therebetween, which is disposed along a fluid flow axis. A first plurality of spaced apart elongated ridges extends into the passage from the first planar wall. The first plurality of spaced apart elongated ridges is disposed along a diagonal direction relative to the fluid flow axis. When a fluid is moved through the passage in a direction corresponding to the fluid flow axis, particles of a first type will tend to move in a first direction that is diagonally away from the fluid flow axis and particles of a second type, different from the first type, will tend to move in a second direction that is different from the first direction.Type: GrantFiled: June 2, 2010Date of Patent: January 22, 2013Assignee: Georgia Tech Research CorporationInventors: Todd A. Sulchek, Alexander Alexeev, Gonghao Wang
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Patent number: 8220067Abstract: A disclosed chemical detection system for detecting a target material, such as an explosive material, can include a cantilevered probe, a probe heater coupled to the cantilevered probe, and a piezoelectric element disposed on the cantilevered probe. The piezoelectric element can be configured as a detector and/or an actuator. Detection can include, for example, detecting a movement of the cantilevered probe or a property of the cantilevered probe. The movement or a change in the property of the cantilevered probe can occur, for example, by adsorption of the target material, desorption of the target material, reaction of the target material and/or phase change of the target material. Examples of detectable movements and properties include temperature shifts, impedance shifts, and resonant frequency shifts of the cantilevered probe. The overall chemical detection system can be incorporated, for example, into a handheld explosive material detection system.Type: GrantFiled: March 29, 2010Date of Patent: July 10, 2012Assignee: Board of Regents of the Nevada System of Higher EducationInventors: Jesse D. Adams, Todd A. Sulchek, Stuart C. Feigin
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Publication number: 20120172256Abstract: The invention provides a liquid cell for an atomic force microscope. The liquid cell includes a liquid cell housing with an internal cavity to contain a fluid, a plurality of conductive feedthroughs traversing the liquid cell housing between the internal cavity and a dry side of the liquid cell, a cantilevered probe coupled to the liquid cell housing, and a piezoelectric drive element disposed on the cantilevered probe. The cantilevered probe is actuated when a drive voltage is applied to the piezoelectric drive element through at least one of the conductive feedthroughs. A method of imaging an object in a liquid medium and a method of sensing a target species with the liquid cell are also disclosed.Type: ApplicationFiled: March 12, 2012Publication date: July 5, 2012Applicants: RenoInventors: Jesse D. Adams, Benjamin S. Rogers, Todd A. Sulchek
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Patent number: 8214917Abstract: A microfluidic cell includes a compressible block and a cantilever. The compressible block includes a first horizontal surface, an opposite second horizontal surface and a plurality of vertical surfaces therebetween. A gasket structure depends downwardly from the second horizontal surface. The gasket structure defines an open cavity therein. The compressible block defines a fluid inlet passage and a fluid outlet passage each in fluid communication with the cavity and opening to a selected one of the first horizontal surface and one of the plurality of vertical surfaces. The cantilever includes body portion and a beam extending laterally therefrom. The body portion is embedded in the compressible block and a portion of the beam extends into the cavity defined by the gasket structure.Type: GrantFiled: May 28, 2010Date of Patent: July 3, 2012Assignee: Georgia Tech Research CorporationInventors: Todd A. Sulchek, Siping Roger Qiu, Damien J. Noga, David K. Schoenwald
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Patent number: 8136385Abstract: The invention provides a liquid cell for an atomic force microscope. The liquid cell includes a liquid cell housing with an internal cavity to contain a fluid, a plurality of conductive feedthroughs traversing the liquid cell housing between the internal cavity and a dry side of the liquid cell, a cantilevered probe coupled to the liquid cell housing, and a piezoelectric drive element disposed on the cantilevered probe. The cantilevered probe is actuated when a drive voltage is applied to the piezoelectric drive element through at least one of the conductive feedthroughs. A method of imaging an object in a liquid medium and a method of sensing a target species with the liquid cell are also disclosed.Type: GrantFiled: August 27, 2007Date of Patent: March 20, 2012Assignee: Board of Regents of the Nevada System of Higher Education, on Behalf of the University of the University of Nevada, RenoInventors: Jesse D. Adams, Benjamin S. Rogers, Todd A. Sulchek
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Publication number: 20100306887Abstract: A microfluidic cell includes a compressible block and a cantilever. The compressible block includes a first horizontal surface, an opposite second horizontal surface and a plurality of vertical surfaces therebetween. A gasket structure depends downwardly from the second horizontal surface. The gasket structure defines an open cavity therein. The compressible block defines a fluid inlet passage and a fluid outlet passage each in fluid communication with the cavity and opening to a selected one of the first horizontal surface and one of the plurality of vertical surfaces. The cantilever includes body portion and a beam extending laterally therefrom. The body portion is embedded in the compressible block and a portion of the beam extends into the cavity defined by the gasket structure.Type: ApplicationFiled: May 28, 2010Publication date: December 2, 2010Applicant: GEORGIA TECH RESEARCH CORPORATIONInventors: Todd A. Sulchek, Siping Roger Qiu, Damien J. Noga, David K. Schoenwald
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Publication number: 20100300942Abstract: An apparatus for separating particles includes a first planar wall and a spaced apart second planar wall parallel to the first planar wall. The first planar wall and the second planar wall define a passage therebetween, which is disposed along a fluid flow axis. A first plurality of spaced apart elongated ridges extends into the passage from the first planar wall. The first plurality of spaced apart elongated ridges is disposed along a diagonal direction relative to the fluid flow axis. When a fluid is moved through the passage in a direction corresponding to the fluid flow axis, particles of a first type will tend to move in a first direction that is diagonally away from the fluid flow axis and particles of a second type, different from the first type, will tend to move in a second direction that is different from the first direction.Type: ApplicationFiled: June 2, 2010Publication date: December 2, 2010Applicant: GEORGIA TECH RESEARCH CORPORATIONInventors: Todd A. Sulchek, Alexander Alexeev, Gonghao Wang