Patents by Inventor Dudley Saville
Dudley Saville 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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Patent number: 8192870Abstract: A supercapacitor or battery electrode containing a modified graphite oxide material, which is a thermally exfoliated graphite oxide with a surface area of from about 300 m2/g to 2600 m2/g.Type: GrantFiled: September 11, 2008Date of Patent: June 5, 2012Assignee: The Trustees of Princeton UniversityInventors: Ilhan A. Aksay, Ted Chao-Hung Yeh, Dudley A. Saville, Joy Saville, legal representative
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Publication number: 20090233057Abstract: An stable electrohydrodynamic filament is obtained by causing a straight electrohydrodynamic filament formed from a liquid to emerge from a Taylor cone, the filament having a diameter of from 10 nm to 100 ?m. Such filaments are useful in electrohydrodynamic printing and manufacturing techniques and their application in liquid drop/particle and fiber production, colloidal deployment and assembly, and composite materials processing.Type: ApplicationFiled: October 31, 2006Publication date: September 17, 2009Inventors: Iihan A. Aksay, Dudley A. Saville, Joy Wagner, Hak Fei Poon, Sibel Korkut, Chuan-hua Chen
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Publication number: 20090123843Abstract: A supercapacitor or battery electrode containing a modified graphite oxide material, which is a thermally exfoliated graphite oxide with a surface area of from about 300 m2/g to 2600 m2/g.Type: ApplicationFiled: September 11, 2008Publication date: May 14, 2009Applicant: The Trustees of Princeton UniversityInventors: Ilhan A. AKSAY, Ted Chao-Hung YEH, Dudley A. SAVILLE, Joy SAVILLE
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Microfluidic control for waveguide optical switches, variable attenuators, and other optical devices
Patent number: 7283696Abstract: Devices utilize elements carried by a fluid in a microchannel to switch, attenuate, shutter, filter, or phase shift optical signals. In certain embodiments, a microchannel carries a gaseous or liquid slug that interacts with at least a portion of the optical power of an optical signal traveling through a waveguide. The microchannel may form part of the cladding of the waveguide, part of the core and the cladding, or part of the core only. The microchannel may also have ends or may be configured as a loop or continuous channel. The fluid devices may be self-latching or may be semi-latching. The fluid in the microchannel is moved using e.g., e.g., electrocapillarity, differential-pressure electrocapillarity, electrowetting, continuous electrowetting, electrophoresis, electroosmosis, dielectrophoresis, electro-hydrodynamic electrohydrodynamic pumping, magneto-hydrodynamic magnetohydrodynamic pumping, thermocapillarity, thermal expansion, dielectric pumping, and/or variable dielectric pumping.Type: GrantFiled: November 28, 2005Date of Patent: October 16, 2007Assignee: Lightwave Microsystems, Inc.Inventors: Anthony J. Ticknor, John T. Kenney, Giacomo Vacca, Dudley A. Saville, Ken G. Purchase -
Microfluidic control for waveguide optical switches, variable attenuators, and other optical devices
Publication number: 20060083473Abstract: Devices utilize elements carried by a fluid in a microchannel to switch, attenuate, shutter, filter, or phase shift optical signals. In certain embodiments, a microchannel carries a gaseous or liquid slug that interacts with at least a portion of the optical power of an optical signal traveling through a waveguide. The microchannel may form part of the cladding of the waveguide, part of the core and the cladding, or part of the core only. The microchannel may also have ends or may be configured as a loop or continuous channel. The fluid devices may be self-latching or may be semi-latching. The fluid in the microchannel is moved using e.g., e.g., electrocapillarity, differential-pressure electrocapillarity, electrowetting, continuous electrowetting, electrophoresis, electroosmosis, dielectrophoresis, electro-hydrodynamic electrohydrodynamic pumping, magneto-hydrodynamic magnetohydrodynamic pumping, thermocapillarity, thermal expansion, dielectric pumping, and/or variable dielectric pumping.Type: ApplicationFiled: November 28, 2005Publication date: April 20, 2006Applicant: Lightwave Microsystems, Inc.Inventors: Anthony Ticknor, John Kenney, Giacomo Vacca, Dudley Saville, Ken Purchase -
Microfluidic control for waveguide optical switches, variable attenuators, and other optical devices
Patent number: 7016560Abstract: Devices utilize elements carried by a fluid in a microchannel toswitch, attenuate, shutter, filter, or phase shift optical signals. In certain embodiments, a microchannel carries a gaseous or liquid slug that interacts with at least a portion of the optical power of an optical signal traveling through a waveguide. The microchannel may form part of the cladding of the waveguide, part of the core and the cladding, or part of the core only. The microchannel may also have ends or may be configured as a loop or continuous channel. The fluid devices may be self-latching or may be semi-latching. The fluid in the microchannel is moved using e.g., e.g., electrocapillarity, differential-pressure electrocapillarity, electrowetting, continuous electrowetting, electrophoresis, electroosmosis, dielectrophoresis, electro-hydrodynamic electrohydrodynamic pumping, magneto-hydrodynamic magnetohydrodynamic pumping, thermocapillarity, thermal expansion, dielectric pumping, and/or variable dielectric pumping.Type: GrantFiled: February 27, 2002Date of Patent: March 21, 2006Assignee: Lightwave Microsystems CorporationInventors: Anthony J. Ticknor, John T. Kenney, Giacomo Vacca, Dudley A. Saville, Ken G. Purchase -
Patent number: 6949176Abstract: Devices and methods utilizing dielectric pumping and variable dielectric pumping to move fluids through microchannels. Two fluids having dissimilar dielectric constants form an interface that is positioned between two electrodes in order to move the interface and therefore the fluids. Dielectric pumping and variable dielectric pumping may be used to move fluids in miniaturized analytical packages containing microchannels in which forces created by surface tension predominate over the gravitational force.Type: GrantFiled: February 28, 2002Date of Patent: September 27, 2005Assignee: Lightwave Microsystems CorporationInventors: Giacomo Vacca, John T. Kenney, Dudley A. Saville
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Patent number: 6533903Abstract: A method for assembling patterned crystalline arrays of colloidal particles using ultraviolet illumination of an optically-sensitive semiconducting anode while using the anode to apply an electronic field to the colloidal particles. The ultraviolet illumination increases current density, and consequently, the flow of the colloidal particles. As a result, colloidal particles can be caused to migrate from non-illuminated areas of the anode to illuminated areas of the anode. Selective illumination of the anode can also be used to permanently affix colloidal crystals to illuminated areas of the anode while not affixing them to non-illuminated areas of the anode.Type: GrantFiled: April 26, 2001Date of Patent: March 18, 2003Assignee: Princeton UniversityInventors: Ryan C. Hayward, Hak F. Poon, Yi Xiao, Dudley A. Saville, Ilhan A. Aksay
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Microfluidic control for waveguide optical switches, variable attenuators, and other optical devices
Publication number: 20030012483Abstract: Devices utilize elements carried by a fluid in a microchannel toswitch, attenuate, shutter, filter, or phase shift optical signals. In certain embodiments, a microchannel carries a gaseous or liquid slug that interacts with at least a portion of the optical power of an optical signal traveling through a waveguide. The microchannel may form part of the cladding of the waveguide, part of the core and the cladding, or part of the core only. The microchannel may also have ends or may be configured as a loop or continuous channel. The fluid devices may be self-latching or may be semi-latching. The fluid in the microchannel is moved using e.g., e.g., electrocapillarity, differential-pressure electrocapillarity, electrowetting, continuous electrowetting, electrophoresis, electroosmosis, dielectrophoresis, electro-hydrodynamic electrohydrodynamic pumping, magneto-hydrodynamic magnetohydrodynamic pumping, thermocapillarity, thermal expansion, dielectric pumping, and/or variable dielectric pumping.Type: ApplicationFiled: February 27, 2002Publication date: January 16, 2003Inventors: Anthony J. Ticknor, John T. Kenney, Giacomo Vacca, Dudley A. Saville, Ken G. Purchase -
Publication number: 20030006140Abstract: Devices and methods utilizing dielectric pumping and variable dielectric pumping to move fluids through microchannels. Two fluids having dissimilar dielectric constants form an interface that is positioned between two electrodes in order to move the interface and therefore the fluids. Dielectric pumping and variable dielectric pumping may be used to move fluids in miniaturized analytical packages containing microchannels in which forces created by surface tension predominate over the gravitational force.Type: ApplicationFiled: February 28, 2002Publication date: January 9, 2003Inventors: Giacomo Vacca, John T. Kenney, Dudley A. Saville
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Publication number: 20010035340Abstract: A method for assembling patterned crystalline arrays of colloidal particles using ultraviolet illumination of an optically-sensitive semiconducting anode while using the anode to apply an electronic field to the colloidal particles. The ultraviolet illumination increases current density, and consequently, the flow of the colloidal particles. As a result, colloidal particles can be caused to migrate from non-illuminated areas of the anode to illuminated areas of the anode. Selective illumination of the anode can also be used to permanently affix colloidal crystals to illuminated areas of the anode while not affixing them to non-illuminated areas of the anode.Type: ApplicationFiled: April 26, 2001Publication date: November 1, 2001Inventors: Ryan C. Hayward, Hak F. Poon, Yi Xiao, Dudley Saville, Ilhan Aksay
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Patent number: 6033547Abstract: A method apparatus is provided for electrophoretically depositing particles onto an electrode, and electrohydrodynamically assembling the particles into crystalline structures. Specifically, the present method and apparatus creates a current flowing through a solution to cause identically charged electrophoretically deposited colloidal particles to attract each other over very large distances (<5 particle diameters) on the surface of electrodes to form two-dimensional colloidal crystals. The attractive force can be created with both DC and AC fields and can modulated by adjusting either the field strength or frequency of the current. Modulating this "lateral attraction" between the particles causes the reversible formation of two-dimensional fluid and crystalline colloidal states on the electrode surface. Further manipulation allows for the formation of two or three-dimensional colloidal crystals, as well as more complex "designed" structures.Type: GrantFiled: January 4, 1999Date of Patent: March 7, 2000Assignee: The Trustees of Princeton UniversityInventors: Mathias Trau, Ilhan A. Aksay, Dudley A. Saville
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Patent number: 5855753Abstract: A method apparatus is provided for electrophoretically depositing particles onto an electrode, and electrohydrodynamically assembling the particles into crystalline structures. Specifically, the present method and apparatus creates a current flowing through a solution to cause identically charged electrophoretically deposited colloidal particles to attract each other over very large distances (<5 particle diameters) on the surface of electrodes to form two-dimensional colloidal crystals. The attractive force can be created with both DC and AC fields and can modulated by adjusting either the field strength or frequency of the current. Modulating this "lateral attraction" between the particles causes the reversible formation of two-dimensional fluid and crystalline colloidal states on the electrode surface. Further manipulation allows for the formation of two or three-dimensional colloidal crystals, as well as more complex "designed" structures.Type: GrantFiled: November 26, 1996Date of Patent: January 5, 1999Assignee: The Trustees of Princeton UniversityInventors: Mathias Trau, Ilhan A. Aksay, Dudley A. Saville