Patents by Inventor Fahrettin L. Degertekin
Fahrettin L. Degertekin 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: 20130278937Abstract: A force sensor for a probe based instrument includes a detection surface and a flexible mechanical structure disposed a first distance above the detection surface so as to form a gap between the flexible mechanical structure and the detection surface, wherein the flexible mechanical structure is configured to deflect upon exposure to an external force, thereby changing the first distance.Type: ApplicationFiled: March 13, 2013Publication date: October 24, 2013Inventor: Fahrettin L. Degertekin
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Patent number: 8334133Abstract: In method of injecting a substance into a living cell having a cell membrane, the substance, the cell and a liquid are placed into a tapering passage. Energy is applied to the cell, thereby inducing poration. To sort cells, a cellular suspension is placed in a tapering passage, including a narrow end that defines an opening that has a dimension corresponding to a cell size. An acoustic wave is applied, thereby forcing cells having a cell size smaller than the selected cell size through the opening, with a portion of the cells having a cell size not smaller than the selected cell size not forced through the opening. To extract material from a cell, an electric field and an acoustic wave are applied, thereby causing the cell membrane to allow the material to pass out of the cell.Type: GrantFiled: March 12, 2010Date of Patent: December 18, 2012Assignee: Georgia Tech Research CorporationInventors: Andrei G. Fedorov, Fahrettin L. Degertekin
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Patent number: 8261602Abstract: In accordance with an embodiment of the invention, there is a force sensor for a probe based instrument. The force sensor can comprise a detection surface and a flexible mechanical structure disposed a first distance above the detection surface so as to form a gap between the flexible mechanical structure and the detection surface, wherein the flexible mechanical structure is configured to deflect upon exposure to an external force, thereby changing the first distance over a selected portion of the gap, the change in distance at the selected portion orienting a probe tip of the force sensor for multi-directional measurement.Type: GrantFiled: March 26, 2010Date of Patent: September 11, 2012Assignee: Georgia Tech Research CorporationInventor: Fahrettin L. Degertekin
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Patent number: 8239968Abstract: An atomic force microscopy system includes an imaging probe having a first thermal displacement constant and a sample placement surface. At least a portion of the sample placement surface has a second thermal displacement constant. The sample placement surface is spaced apart from the imaging probe at a predetermined displacement. The sample placement surface is configured so that the second thermal displacement constant matches the first thermal displacement constant so that when the imaging probe and the sample placement surface are subject to a predetermined temperature, both the portion of the sample placement surface and the imaging prove are displaced by a same distance.Type: GrantFiled: July 6, 2010Date of Patent: August 7, 2012Assignee: Georgia Tech Research CorporationInventors: Hamdi Torun, Fahrettin L. Degertekin, Ofer Finkler
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Publication number: 20110055986Abstract: An atomic force microscopy system includes an imaging probe having a first thermal displacement constant and a sample placement surface. At least a portion of the sample placement surface has a second thermal displacement constant. The sample placement surface is spaced apart from the imaging probe at a predetermined displacement. The sample placement surface is configured so that the second thermal displacement constant matches the first thermal displacement constant so that when the imaging probe and the sample placement surface are subject to a predetermined temperature, both the portion of the sample placement surface and the imaging prove are displaced by a same distance.Type: ApplicationFiled: July 6, 2010Publication date: March 3, 2011Applicant: GEORGIA TECH RESEARCH CORPORATIONInventors: Hamdi Torun, Fahrettin L. Degertekin, Ofer Finkler
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Publication number: 20100306885Abstract: An atomic force microscopy sensor includes a substrate, a cantilever beam and an electrostatic actuator. The cantilever beam has a proximal end and an opposite distal end. The proximal end is in a fixed relationship with the substrate and the cantilever beam is configured so that the distal end is in a moveable relationship with respect to the substrate. The electrostatic actuator includes a first electrode that is coupled to the cantilever beam adjacent to the proximal end and a spaced apart second electrode that is in a fixed relationship with the substrate. When an electrical potential is applied between the first electrode and the second electrode, the first electrode is drawn to the second electrode, thereby causing the distal end of the cantilever beam to move.Type: ApplicationFiled: August 9, 2010Publication date: December 2, 2010Applicant: GEORGIA TECH RESEARCH CORPORATIONInventor: Fahrettin L. Degertekin
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Publication number: 20100227371Abstract: In method of injecting a substance into a living cell having a cell membrane, the substance, the cell and a liquid are placed into a tapering passage. Energy is applied to the cell, thereby inducing poration. To sort cells, a cellular suspension is placed in a tapering passage, including a narrow end that defines an opening that has a dimension corresponding to a cell size. An acoustic wave is applied, thereby forcing cells having a cell size smaller than the selected cell size through the opening, with a portion of the cells having a cell size not smaller than the selected cell size not forced through the opening. To extract material from a cell, an electric field and an acoustic wave are applied, thereby causing the cell membrane to allow the material to pass out of the cell.Type: ApplicationFiled: March 12, 2010Publication date: September 9, 2010Applicant: GEORGIA TECH RESEARCH CORPORATIONInventors: Andrei G. Fedorov, Fahrettin L. Degertekin
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Publication number: 20100180354Abstract: In accordance with an embodiment of the invention, there is a force sensor for a probe based instrument. The force sensor can comprise a detection surface and a flexible mechanical structure disposed a first distance above the detection surface so as to form a gap between the flexible mechanical structure and the detection surface, wherein the flexible mechanical structure is configured to deflect upon exposure to an external force, thereby changing the first distance over a selected portion of the gap, the change in distance at the selected portion orienting a probe tip of the force sensor for multi-directional measurement.Type: ApplicationFiled: March 26, 2010Publication date: July 15, 2010Applicant: GEORGIA TECH RESEARCH CORPORATIONInventor: Fahrettin L. Degertekin
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Patent number: 7752898Abstract: An atomic force microscope sensing structure includes a substrate, a flexible membrane and an actuating element. The flexible membrane has a first end that is clamped to the substrate and an opposite second end that is clamped to the substrate. A central portion of the membrane and the substrate define a first gap width therebetween. A peripheral portion of the membrane and the substrate define a second gap width therebetween. The first gap width is different from the second gap width. The actuating element is disposed at least adjacent to the first end and the second end and is configured to displace the membrane relative to the substrate.Type: GrantFiled: August 14, 2007Date of Patent: July 13, 2010Assignee: Georgia Tech Research CorporationInventor: Fahrettin L. Degertekin
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Patent number: 7707873Abstract: In accordance with an embodiment of the invention, there is a force sensor for a probe based instrument. The force sensor can comprise a detection surface and a flexible mechanical structure disposed a first distance above the detection surface so as to form a gap between the flexible mechanical structure and the detection surface, wherein the flexible mechanical structure is configured to deflect upon exposure to an external force, thereby changing the first distance over a selected portion of the gap, the change in distance at the selected portion orienting a probe tip of the force sensor for multi-directional measurement.Type: GrantFiled: June 10, 2008Date of Patent: May 4, 2010Assignee: Georgia Tech Research CorporationInventor: Fahrettin L. Degertekin
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Patent number: 7704743Abstract: In method of injecting a substance into a living cell having a cell membrane, the substance, the cell and a liquid are placed into a tapering passage. Energy is applied to the cell, thereby inducing poration. To sort cells, a cellular suspension is placed in a tapering passage, including a narrow end that defines an opening that has a dimension corresponding to a cell size. An acoustic wave is applied, thereby forcing cells having a cell size smaller than the selected cell size through the opening, with a portion of the cells having a cell size not smaller than the selected cell size not forced through the opening. To extract material from a cell, an electric field and an acoustic wave are applied, thereby causing the cell membrane to allow the material to pass out of the cell.Type: GrantFiled: March 28, 2006Date of Patent: April 27, 2010Assignee: Georgia Tech Research CorporationInventors: Andrei G. Fedorov, Fahrettin L. Degertekin
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Publication number: 20080307865Abstract: In accordance with an embodiment of the invention, there is a force sensor for a probe based instrument. The force sensor can comprise a detection surface and a flexible mechanical structure disposed a first distance above the detection surface so as to form a gap between the flexible mechanical structure and the detection surface, wherein the flexible mechanical structure is configured to deflect upon exposure to an external force, thereby changing the first distance over a selected portion of the gap, the change in distance at the selected portion orienting a probe tip of the force sensor for multi-directional measurement.Type: ApplicationFiled: June 10, 2008Publication date: December 18, 2008Applicant: GEORGIA TECH RESEARCH CORPORATIONInventor: Fahrettin L. Degertekin
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Patent number: 7441447Abstract: In accordance with an embodiment of the invention, there is a force sensor for a probe based instrument. The force sensor can comprise a detection surface and a flexible mechanical structure disposed a first distance above the detection surface so as to form a gap between the flexible mechanical structure and the detection surface, wherein the flexible mechanical structure is configured to deflect upon exposure to an external force, thereby changing the first distance.Type: GrantFiled: October 10, 2006Date of Patent: October 28, 2008Assignee: Georgia Tech Research CorporationInventors: Fahrettin L. Degertekin, Abidin G. Onaran, Mujdat Balantekin
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Publication number: 20080209988Abstract: An atomic force microscopy sensor includes a substrate, a cantilever beam and an electrostatic actuator. The cantilever beam has a proximal end and an opposite distal end. The proximal end is in a fixed relationship with the substrate and the cantilever beam is configured so that the distal end is in a moveable relationship with respect to the substrate. The electrostatic actuator includes a first electrode that is coupled to the cantilever beam adjacent to the proximal end and a spaced apart second electrode that is in a fixed relationship with the substrate. When an electrical potential is applied between the first electrode and the second electrode, the first electrode is drawn to the second electrode, thereby causing the distal end of the cantilever beam to move.Type: ApplicationFiled: August 14, 2007Publication date: September 4, 2008Applicant: Georgia Tech Research CorporationInventor: Fahrettin L. Degertekin
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Patent number: 7068377Abstract: The present invention relates to microinterferometers and the application of such to profile surface geometries. A representative method for profiling a target surface of an object includes: illuminating the target surface with an incident light beam through a phase-sensitive, reflective diffraction grating, such that a first portion of the incident light beam is reflected and a second portion of the incident light beam is diffracted upon being transmitted through the diffraction grating; receiving interference patterns produced from the first portion of he incident light beam reflected from the diffraction grating interfering with the second portion of the incident light beam reflected from the target surface; measuring the intensity of the interference patterns to determine the distance to determine the distance between a reference point and the surface; varying the position of the object relative to the diffraction grating; and processing the measured distances to profile the surface of the object.Type: GrantFiled: March 29, 2002Date of Patent: June 27, 2006Assignee: Georgia-Tech Rsearch CorporationInventors: Fahrettin L. Degertekin, Thomas R. Kurfess, Byungki Kim, Hosein Ali Razavi
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Patent number: 6753969Abstract: The present invention relates to microinterferometers. An embodiment of a microinterferometer for accurately measuring the distance to an object surface includes a substrate and a tunable, phase-sensitive, reflective diffraction grating formed atop said substrate. The diffraction grating is configured to reflect a first portion of an incident light and transmit a second portion of the incident light, such that the second portion of the incident light is diffracted. The diffraction grating is further configured to be controllably adjusted. The microinterferometer also includes a photo-detector for receiving interference patterns produced from the first portion of the incident light reflected from the diffraction grating and the second portion of the incident light reflected from the object surface. The microinterferometer also includes a controller coupled to the photo-detector and the diffraction grating for adjusting the diffraction grating, such that the interference patterns are altered.Type: GrantFiled: March 29, 2002Date of Patent: June 22, 2004Assignee: Geogia Tech Research CorporationInventors: Fahrettin L. Degertekin, Thomas R. Kurfess, Byungki Kim, Hosein Ali Razavi
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Patent number: 6643025Abstract: Several embodiments of a microinterferometer are disclosed. A first embodiment of a microinterferometer for measuring the absolute distance to an object surface includes a substrate. The microinterferometer also includes a phase-sensitive, reflective diffraction grating formed on the substrate. The diffraction grating is configured to reflect a first portion of an incident light and transmit a second portion of the incident light, such that the second portion of the incident light is diffracted. The microinterferometer further includes a lens formed on the substrate for focusing the second portion of the incident light to a predetermined local distance, and a photo-detector for receiving interference patterns produced from the first portion of the incident light reflected from the diffraction grating and the second portion of the incident light reflected from the object surface.Type: GrantFiled: March 29, 2002Date of Patent: November 4, 2003Assignee: Georgia Tech Research CorporationInventors: Fahrettin L. Degertekin, Thomas R. Kurfess, Byungki Kim, Hosein Ali Razavi
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Publication number: 20030184761Abstract: The present invention relates to microinterferometers and the application of such to profile surface geometries. A representative method for profiling a target surface of an object includes: illuminating the target surface with an incident light beam through a phase-sensitive, reflective diffraction grating, such that a first portion of the incident light beam is reflected and a second portion of the incident light beam is diffracted upon being transmitted through the diffraction grating; receiving interference patterns produced from the first portion of he incident light beam reflected from the diffraction grating interfering with the second portion of the incident light beam reflected from the target surface; measuring the intensity of the interference patterns to determine the distance to determine the distance between a reference point and the surface; varying the position of the object relative to the diffraction grating; and processing the measured distances to profile the surface of the object.Type: ApplicationFiled: March 29, 2002Publication date: October 2, 2003Inventors: Fahrettin L. Degertekin, Thomas R. Kurfess, Byungki Kim, Hosein Ali Razavi
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Publication number: 20030038949Abstract: The present invention relates to microinterferometers. An embodiment of a microinterferometer for accurately measuring the distance to an object surface includes a substrate and a tunable, phase-sensitive, reflective diffraction grating formed atop said substrate. The diffraction grating is configured to reflect a first portion of an incident light and transmit a second portion of the incident light, such that the second portion of the incident light is diffracted. The diffraction grating is further configured to be controllably adjusted. The microinterferometer also includes a photo-detector for receiving interference patterns produced from the first portion of the incident light reflected from the diffraction grating and the second portion of the incident light reflected from the object surface. The microinterferometer also includes a controller coupled to the photo-detector and the diffraction grating for adjusting the diffraction grating, such that the interference patterns are altered.Type: ApplicationFiled: March 29, 2002Publication date: February 27, 2003Inventors: Fahrettin L. Degertekin, Thomas R. Kurfess, Byungki Kim, Hosein Ali Razavi
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Publication number: 20020163648Abstract: Several embodiments of a microinterferometer are disclosed. A first embodiment of a microinterferometer for measuring the absolute distance to an object surface includes a substrate. The microinterferometer also includes a phase-sensitive, reflective diffraction grating formed on the substrate. The diffraction grating is configured to reflect a first portion of an incident light and transmit a second portion of the incident light, such that the second portion of the incident light is diffracted. The microinterferometer further includes a lens formed on the substrate for focusing the second portion of the incident light to a predetermined local distance, and a photo-detector for receiving interference patterns produced from the first portion of the incident light reflected from the diffraction grating and the second portion of the incident light reflected from the object surface.Type: ApplicationFiled: March 29, 2002Publication date: November 7, 2002Inventors: Fahrettin L. Degertekin, Thomas R. Kurfess, Byungki Kim, Hosein Ali Razavi