Search Patents
  • Material quality, suspended material structures on lattice-mismatched substrates
    Publication number: 20150102465
    Abstract: Suspended structures are provided using selective etch technology. Such structures can be protected on all sides when the selective undercut etch is performed, thereby providing excellent control of feature geometry combined with superior material quality.
    Type: Application
    Filed: October 10, 2014
    Publication date: April 16, 2015
    Inventors: Robert Chen, James S. Harris, JR., Suyog Gupta
  • Low loss nano-aperture
    Patent number: 8748904
    Abstract: Low loss optical apertures are provided. A silicon intermediate layer sandwiched between a metal aperture layer and a dielectric layer has been found to offer a good combination of low optical loss combined with superior mechanical properties.
    Type: Grant
    Filed: February 4, 2013
    Date of Patent: June 10, 2014
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Sonny Vo, James S. Harris, Jr.
  • Material quality, suspended material structures on lattice-mismatched substrates
    Patent number: 9330907
    Abstract: Suspended structures are provided using selective etch technology. Such structures can be protected on all sides when the selective undercut etch is performed, thereby providing excellent control of feature geometry combined with superior material quality.
    Type: Grant
    Filed: October 10, 2014
    Date of Patent: May 3, 2016
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Robert Chen, James S. Harris, Jr., Suyog Gupta
  • Re-Usable Analyte Detector and Methods
    Publication number: 20160320373
    Abstract: Devices and methods for detecting the presence of one or more analytes, such as biomolecules (FIG. 2). An analyte detection device includes at least two conductive structures disposed between three insulating structures and a gap exists in the structures that defines a channel such that at least four electrodes capable of measuring an electrical property are present in the channel. Methods for improving analyte detector performance through low-salt buffer washes also are disclosed.
    Type: Application
    Filed: January 5, 2015
    Publication date: November 3, 2016
    Inventors: James S. HARRIS, Jr., Ronald W. DAVIS, Rahim ESFANDYARPOUR
  • Germanium electroluminescence device and fabrication method of the same
    Patent number: 8847204
    Abstract: This invention provides a germanium electroluminescence device and a fabricating method of the same for using germanium of an indirect bandgap semiconductor without modifying a bandgap as a light-emitting layer which emits a 1550 nm-wavelength light and enabling to use not only as infrared LEDs itself but also as light sources for optical communication systems.
    Type: Grant
    Filed: February 26, 2013
    Date of Patent: September 30, 2014
    Assignees: Seoul National University R&DB Foundation, The Board of Trustees of the Leland Standford Junior University
    Inventors: Byung-Gook Park, James S. Harris, Jr., Seongjae Cho
  • Method of design and growth of single-crystal 3D nanostructured solar cell or detector
    Publication number: 20120286389
    Abstract: Photovoltaic devices conformally deposited on a nano-structured substrate having hills and valleys have corresponding hills and valleys in the device layers. We have found that disposing an insulator in the valleys of the device layers such that the top electrode of the device is insulated from the device layer valleys provides beneficial results. In particular, this insulator prevents electrical shorts that otherwise tend to occur in such devices.
    Type: Application
    Filed: May 11, 2012
    Publication date: November 15, 2012
    Inventors: Anjia Gu, Yijie Huo, Dong Liang, Yangsen Kang, James S. Harris, JR.
  • Vertical cavity surface emitting laser nanoscope for near-field applications
    Patent number: 9014231
    Abstract: A vertical cavity surface emitting laser (VCSEL) nanoscope is provided. The VCSEL nanoscope combines a VCSEL with a nano-scale aperture using a support member to separate the aperture from the VCSEL emission face. The resulting device is a useful near-field probe with a wide variety of applications.
    Type: Grant
    Filed: February 4, 2013
    Date of Patent: April 21, 2015
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Sonny Vo, James S. Harris, Jr.
  • GERMANIUM ELECTROLUMINESCENCE DEVICE AND FABRICATION METHOD OF THE SAME
    Publication number: 20140239324
    Abstract: This invention provides a germanium electroluminescence device and a fabricating method of the same for using germanium of an indirect bandgap semiconductor without modifying a bandgap as a light-emitting layer which emits a 1550 nm-wavelength light and enabling to use not only as infrared LEDs itself but also as light sources for optical communication systems.
    Type: Application
    Filed: February 26, 2013
    Publication date: August 28, 2014
    Applicants: The Board of Trustees of the Leland Standford Junior University, SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
    Inventors: Byung-Gook Park, James S. Harris, JR., Seongjae Cho
  • Methods and Apparatus for Rapid Monitoring of Hemostatic State
    Publication number: 20150374269
    Abstract: Improved monitoring of one or more blood coagulation factors is provided. Factor-specific molecular probes having a dye-quencher arrangement are employed. In preferred embodiments, a compact integrated optical source and detector device is used for fluorescence measurements. Continuous and real-time monitoring of the activity of one or multiple blood factors is provided. Such real-time information can be used to automatically control delivery of drugs such as coagulants and/or blood thinners.
    Type: Application
    Filed: June 26, 2015
    Publication date: December 31, 2015
    Inventors: Meredith M. Lee, Jelena Levi, James L. Zehnder, James S. Harris, JR.
  • Apparatus, system and method for determining wear of an article
    Patent number: 6111643
    Abstract: A system for determining wear of an article including an optical fiber for transmitting light from a light source. The optical fiber is embedded in the article, and operatively coupled to an interferometric system. The interferometric system is operatively coupled to a processor. The interferometric system provides the processor with information relating to wear of the optical fiber, and the processor determines wear of the article rate of wear and remaining useful life of the article based on the information relating to wear of the optical fiber.
    Type: Grant
    Filed: October 28, 1997
    Date of Patent: August 29, 2000
    Assignee: Reliance Electric Industrial Company
    Inventors: Frederick M. Discenzo, James S. Harris
  • Methods and apparatus for rapid monitoring of hemostatic state
    Patent number: 9986941
    Abstract: Improved monitoring of one or more blood coagulation factors is provided. Factor-specific molecular probes having a dye-quencher arrangement are employed. In preferred embodiments, a compact integrated optical source and detector device is used for fluorescence measurements. Continuous and real-time monitoring of the activity of one or multiple blood factors is provided. Such real-time information can be used to automatically control delivery of drugs such as coagulants and/or blood thinners.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: June 5, 2018
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Meredith M. Lee, Jelena Levi, James L. Zehnder, James S. Harris, Jr.
  • Method of design and growth of single-crystal 3D nanostructured solar cell or detector
    Publication number: 20150047702
    Abstract: Photovoltaic devices conformally deposited on a nano-structured substrate having hills and valleys have corresponding hills and valleys in the device layers. We have found that disposing an insulator in the valleys of the device layers such that the top electrode of the device is insulated from the device layer valleys provides beneficial results. In particular, this insulator prevents electrical shorts that otherwise tend to occur in such devices.
    Type: Application
    Filed: November 3, 2014
    Publication date: February 19, 2015
    Inventors: Anjia Gu, Yijie Huo, Dong Liang, Yangsen Kang, James S. Harris, JR.
  • Schottky barrier solar cell
    Patent number: 4227943
    Abstract: A solar cell is constructed by coating an n-type conductivity semiconductor with a thin layer of bromine doped, polymeric sulfur-nitride, (SNBr.sub.0.4).sub.x. Metal deposits are provided on both materials for making electrical contact to the cell. In a preferred embodiment, the semiconductor is silicon. In a second preferred embodiment, the semiconductor is GaAs on an n.sup.+ -type conductivity GaAs substrate.
    Type: Grant
    Filed: June 4, 1979
    Date of Patent: October 14, 1980
    Assignee: Rockwell International Corporation
    Inventors: Marshall J. Cohen, James S. Harris, Jr.
  • Method for fabricating orientation-patterned gallium arsenide seeding structures
    Patent number: 6273949
    Abstract: A method for fabricating gallium arsenide (GaAs) based structure groups with inverted crystallographic orientation to form wavelength converters that utilizes germanium as a crystallographic neutral template layer deposited on a GaAs substrate. A crystallographic inverted gallium arsenide layer is grown on top of the template layer. In a selective trench etching process areas of the substrate are exposed again for a consecutive collective deposition of GaAs.
    Type: Grant
    Filed: September 10, 1999
    Date of Patent: August 14, 2001
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Loren A. Eyres, Martin M. Fejer, Christopher B. Ebert, James S. Harris
  • Laser diode device with nitrogen incorporating barrier
    Publication number: 20020075920
    Abstract: In an active region of an optical-electronic semiconductor device, nitrogen is incorporated in a barrier adjacent a GaNAs-based (e.g., GaInNAs) quantum well to improve device performance at wavelength bands above 1.2 microns. In a specific example embodiment, a mirror or cladding layer is grown over the active region in a manner that removes nitrogen complex otherwise present with Ga—N bonds in the active region. The embodiment can be implemented as one of a number of configurations including vertical cavity surface emitting lasers (VCSEL) and edge emitting lasers.
    Type: Application
    Filed: December 15, 2000
    Publication date: June 20, 2002
    Inventors: Sylvia Spruytte, Michael C. Larson, James S. Harris, Christopher Coldren
  • Apparatus, system and method for determining wear of an article
    Patent number: 6359690
    Abstract: A system for determining wear of an article including an optical fiber for transmitting light from a light source. The optical fiber is embedded in the article, and operatively coupled to an interferometric system. The interferometric system is operatively coupled to a processor. The interferometric system provides the processor with information relating to wear of the optical fiber, and the processor determines wear of the article rate of wear and remaining useful life of the article based on the information relating to wear of the optical fiber.
    Type: Grant
    Filed: February 16, 2000
    Date of Patent: March 19, 2002
    Assignee: Reliance Electric Technologies, LLC
    Inventors: Frederick M. Discenzo, James S. Harris
  • MONOLITHICALLY INTEGRATED MODE-LOCKED VERTICAL CAVITY SURFACE EMITTING LASER (VCSEL)
    Publication number: 20030169797
    Abstract: A monolithically integrated, mode-locked vertical cavity surface emitting laser (VCSEL) for emitting ultrafast high power pulses. The resonator of the VCSEL has an active medium for emitting a radiation, a spacer for extending the resonator to a length L at which a significant number N of axial modes of the radiation are supported in the resonator and a saturable absorber for mode-locking. The VCSEL has an arrangement for stabilizing the resonator such that one transverse mode of the radiation is supported within the resonator. The VCSEL also has an arrangement for compensating dispersion of the radiation occurring in the resonator.
    Type: Application
    Filed: June 19, 2002
    Publication date: September 11, 2003
    Inventors: Rafael I. Aldaz, Gordon A. Keeler, Vijit A. Sabnis, James S. Harris, David A.B. Miller
  • System for determining condition of an article
    Patent number: 6067159
    Abstract: A system for determining wear of an article including an optical fiber for transmitting light from a light source. The optical fiber is embedded in the article, and operatively coupled to an interferometric system. The interferometric system is operatively coupled to a processor. The interferometric system provides the processor with information relating to wear of the optical fiber, and the processor determines wear of the article rate of wear and remaining useful life of the article based on the information relating to wear of the optical fiber.
    Type: Grant
    Filed: February 22, 1999
    Date of Patent: May 23, 2000
    Assignee: Reliance Electric Industrial Company
    Inventors: Frederick M. Discenzo, James S. Harris
  • Compact transform spectrometer based on sampling a standing wave
    Publication number: 20020075483
    Abstract: A spectrometer for determining a spectrum of a light by using a mirror to reflect the light so that the light forms an intensity standing wave pattern through superposition of an incident portion of the light and a reflected portion of the light. The spectrometer is equipped with an intensity detector whose thickness is less than a shortest wavelength of the light being examined and which is semitransparent over the spectrum. The spectrometer has a mechanism to provide relative movement between the mirror and the intensity detector such that the intensity detector registers a variation of the intensity standing wave pattern. An analyzer, such as a Fourier transform analyzer, is employed to determine the spectrum of the light from that variation of the intensity standing wave pattern.
    Type: Application
    Filed: August 16, 2001
    Publication date: June 20, 2002
    Inventors: James S. Harris, Helen L. Kung, David A. B. Miller
  • Nanostructured window layer in solar cells
    Publication number: 20160293787
    Abstract: A solar cell has a nanostructured window layer with planar p-n junction geometry. Preferably, metal grid mesas are used to provide lateral conductance and good electrical contacts. In addition to carrier confinement and lateral conductance, this window layer can also provides a broadband angle-independent antireflection function. This structure enhances both the optical and electrical properties in a solar cell, leading to higher Jsc, Voc, FF (fill factor) and efficiency. The absorption in the window layer is partially converted to photocurrent, which to some extent compensates for the self-absorption loss due to its greater thickness. This design can eliminate the need for a separate anti-reflection coating.
    Type: Application
    Filed: November 12, 2013
    Publication date: October 6, 2016
    Inventors: Dong Liang, Yangsen Kang, Yijie Huo, James S. Harris, JR.
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