Patents by Inventor John F. Rabolt

John F. Rabolt 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).

  • Patent number: 9897547
    Abstract: A nanocomposite structure includes: a) a charged fibrous substrate including fibers having disposed on their surfaces a multilayer structure including a layer of a first polyelectrolyte and disposed thereon a layer of a second polyelectrolyte of opposite charge from the first, the second polyelectrolyte forming the outermost layer of the charged fibrous substrate; and b) charged nanorods having a charge opposite that of the charged fibrous substrate, including gold nanorods each having disposed on its surface one or more layers, the outermost of which is a third polyelectrolyte having a charge opposite that of the second polyelectrolyte, wherein the first and third polyelectrolytes may be the same or different; wherein the charged nanorods are disposed unaligned with respect to each other on the charged fibrous substrate.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: February 20, 2018
    Assignee: UNIVERSITY OF DELAWARE
    Inventors: John F. Rabolt, Wenqiong Tang, D. Bruce Chase, Donald L. Sparks
  • Publication number: 20160069811
    Abstract: A nanocomposite structure includes: a) a charged fibrous substrate including fibers having disposed on their surfaces a multilayer structure including a layer of a first polyelectrolyte and disposed thereon a layer of a second polyelectrolyte of opposite charge from the first, the second polyelectrolyte forming the outermost layer of the charged fibrous substrate; and b) charged nanorods having a charge opposite that of the charged fibrous substrate, including gold nanorods each having disposed on its surface one or more layers, the outermost of which is a third polyelectrolyte having a charge opposite that of the second polyelectrolyte, wherein the first and third polyelectrolytes may be the same or different; wherein the charged nanorods are disposed unaligned with respect to each other on the charged fibrous substrate.
    Type: Application
    Filed: March 12, 2014
    Publication date: March 10, 2016
    Applicant: UNIVERSITY OF DELAWARE
    Inventors: JOHN F. RABOLT, WENQIONG TANG, D. BRUCE CHASE, DONALD L. SPARKS
  • Patent number: 8083983
    Abstract: A process to make a polyolefin fiber which has the following steps: mixing at least one polyolefin into a solution at room temperature or a slightly elevated temperature to form a polymer solution and electrospinning at room temperature said polymer solution to form a fiber.
    Type: Grant
    Filed: November 22, 2006
    Date of Patent: December 27, 2011
    Inventors: John F. Rabolt, Keun-Hyung Lee, Steven R. Givens
  • Publication number: 20100056007
    Abstract: A process to make a polyolefin fiber which has the following steps: mixing at least one polyolefin into a solution at room temperature or a slightly elevated temperature to form a polymer solution and electrospinning at room temperature said polymer solution to form a fiber.
    Type: Application
    Filed: November 22, 2006
    Publication date: March 4, 2010
    Inventors: John F. Rabolt, Keun-Hyung Lee, Steven R. Givens
  • Publication number: 20090118601
    Abstract: A method for detecting disease in a patient includes providing infrared (IR) light and coupling the IR light through direct lens coupling or through a first group of one or more optical fibers. IR light is reflected from a portion of the patient and collected by a lens arrangement or a second group of one or more optical fibers. The reflected IR light is dispersed into its spectrum which is detected and analyzed. An apparatus suitable for diagnosing a disease in a patient includes an IR light source and optical fiber or direct lens coupling of IR light onto a body part or fluid of the patient. Reflected light from the patient is optically dispersed using a prism or grating. An IR focal plane array receives the optically dispersed light. The spectrum of the reflected IR light is used to provide a diagnosis of disease in the patient by identifying various disease markers or chemical fingerprints. The method and apparatus are capable of non-invasively detecting disease markers in a patient.
    Type: Application
    Filed: September 29, 2005
    Publication date: May 7, 2009
    Applicants: UNIVERSITY OF DELAWARE, MATERIALS RESEARCH SERVICES
    Inventors: John F. Rabolt, Mei-Wei Tsao
  • Patent number: 6943353
    Abstract: An apparatus and method capable of providing spatially multiplexed IR spectral information simultaneously in real-time for multiple samples or multiple spatial areas of one sample using IR absorption phenomena requires no moving parts or Fourier Transform during operation, and self-compensates for background spectra and degradation of component performance over time. IR spectral information and chemical analysis of the samples is determined by using one or more IR sources, sampling accessories for positioning the samples, optically dispersive elements, a focal plane array (FPA) arranged to detect the dispersed light beams, and a processor and display to control the FPA, and display an IR spectrograph. Fiber-optic coupling can be used to allow remote sensing. Portability, reliability, and ruggedness is enhanced due to the no-moving part construction. Applications include determining time-resolved orientation and characteristics of materials, including polymer monolayers.
    Type: Grant
    Filed: April 1, 2004
    Date of Patent: September 13, 2005
    Assignee: UD Technology Corporation
    Inventors: Douglas L. Elmore, John F. Rabolt, Mei-Wei Tsao
  • Publication number: 20040195511
    Abstract: An apparatus and method capable of providing spatially multiplexed IR spectral information simultaneously in real-time for multiple samples or multiple spatial areas of one sample using IR absorption phenomena requires no moving parts or Fourier Transform during operation, and self-compensates for background spectra and degradation of component performance over time. IR spectral information and chemical analysis of the samples is determined by using one or more IR sources, sampling accessories for positioning the samples, optically dispersive elements, a focal plane array (FPA) arranged to detect the dispersed light beams, and a processor and display to control the FPA, and display an IR spectrograph. Fiber-optic coupling can be used to allow remote sensing. Portability, reliability, and ruggedness is enhanced due to the no-moving part construction. Applications include determining time-resolved orientation and characteristics of materials, including polymer monolayers.
    Type: Application
    Filed: April 1, 2004
    Publication date: October 7, 2004
    Applicant: UD TECHNOLOGY CORPORATION
    Inventors: Douglas L. Elmore, John F. Rabolt, Mei-Wei Tsao
  • Patent number: 6784428
    Abstract: An apparatus and method capable of providing IR spectral information using IR absorption phenomena requires no moving parts or Fourier Transform during operation. IR spectral information and chemical analysis of a sample in a sample containing functional groups is determined by using an IR source, a sampling accessory for positioning the sample volume, an optically dispersive element, a focal plane array (FPA) arranged to detect the dispersed light beam, and a processor and display to control the FPA, and display an IR spectrograph. Fiber-optic coupling allows remote sensing, and portability, reliability, and ruggedness is enhanced due to the no-moving part construction. Use of the apparatus and method has broad industrial and environmental application, including measurement of thickness and chemical composition of various films, coatings, and liquids, and may also be used in real-time sensing of hazardous materials, including chemical and biological warfare agents.
    Type: Grant
    Filed: October 29, 2001
    Date of Patent: August 31, 2004
    Assignee: UD Technology Corporation
    Inventors: John F. Rabolt, Mei-Wei Tsao
  • Publication number: 20030071216
    Abstract: An apparatus and method capable of providing IR spectral information using IR absorption phenomena requires no moving parts or Fourier Transform during operation. IR spectral information and chemical analysis of a sample in a sample containing functional groups is determined by using an IR source, a sampling accessory for positioning the sample volume, an optically dispersive element, a focal plane array (FPA) arranged to detect the dispersed light beam, and a processor and display to control the FPA, and display an IR spectrograph. Fiber-optic coupling allows remote sensing, and portability, reliability, and ruggedness is enhanced due to the no-moving part construction. Use of the apparatus and method has broad industrial and environmental application, including measurement of thickness and chemical composition of various films, coatings, and liquids, and may also be used in real-time sensing of hazardous materials, including chemical and biological warfare agents.
    Type: Application
    Filed: October 29, 2001
    Publication date: April 17, 2003
    Applicant: University of Delaware
    Inventors: John F. Rabolt, Mei-Wei Tsao
  • Publication number: 20030006527
    Abstract: The present invention relates to the fabrication of elastomeric replicas or stamps of surfaces from a stamp master, wherein the master has geometrical features below 100 &mgr;m. The elastomeric stamps of the present invention are prepared from injection-molded plastic stamp masters. The stamps are used to replicate the surfaces or patterns of the stamp master on a substrate using soft lithography techniques.
    Type: Application
    Filed: June 21, 2002
    Publication date: January 9, 2003
    Inventors: John F. Rabolt, Mei-Wei Tsao
  • Patent number: 4559447
    Abstract: This is a device that enables one to control the translation and rotation of an element relative to a light beam. The device has a rotatable member having a plurality of position-identifying circumferentially spaced openings therein as well as an aperture for the transmission of a light beam. The rotatable member is associated with translation means and rotating means. In a preferred embodiment the rotatable member is remotely controlled with a computer.
    Type: Grant
    Filed: May 16, 1983
    Date of Patent: December 17, 1985
    Assignee: International Business Machines Corporation
    Inventors: Nicholas E. Schlotter, John F. Rabolt