Patents Assigned to Radiation Monitoring Devices, Inc.
  • Patent number: 10266759
    Abstract: Embodiments of composite scintillators which may include a scintillator material encapsulated in a plastic matrix material and their methods of use are described.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: April 23, 2019
    Assignee: Radiation Monitoring Devices, Inc.
    Inventors: Kanai S. Shah, Andrey Gueorguiev, Edgar V. Van Loef, Gary Markosyan
  • Patent number: 10234573
    Abstract: A dual-mode, hand-held, digital probe, designed to rapidly localize tissues of interest through gamma detection, and provide high-resolution, real-time images of the suspect area by sensing beta radiation is presented. A position-sensitive solid-state photomultiplier is optically bonded with a hybrid scintillator including a thin Crystalline Microcolumnar Structure (CMS) CsI:T1 scintillator, vapor-deposited directly onto a monolithic (polycrystalline) LYSO scintillator.
    Type: Grant
    Filed: August 15, 2017
    Date of Patent: March 19, 2019
    Assignee: RADIATION MONITORING DEVICES, INC.
    Inventors: Vivek V. Nagarkar, Bipin Singh, Hamid Sabet, Haris Kudrolli
  • Patent number: 10033152
    Abstract: An antireflective structure and a fabrication method thereof are disclosed. In one aspect, the antireflective structure includes a substrate, a buffer layer on the substrate, and an anticorrosion layer on the buffer layer, wherein the corrosion resistant layer comprises a densely packed cubic lattice structure. In one aspect, the fabrication method includes depositing a first buffer layer on a substrate in an e-beam deposition process, and depositing a first anticorrosion layer on the first buffer layer in an e-beam deposition process, wherein the substrate comprises sapphire, the first corrosion resistant layer comprises lutetia, and the first buffer layer comprise silicon carbide.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: July 24, 2018
    Assignee: RADIATION MONITORING DEVICES, INC.
    Inventors: Vivek V. Nagarkar, Zsolt Marton, Harish B. Bhandari
  • Publication number: 20180171224
    Abstract: The present invention relates to scintillator compositions and related devices and methods. The scintillator compositions may include, for example, a scintillation compound and a dopant, the scintillation compound having the formula x1-x2-x3-x4 and x1 is Cs; x2 is Na; x3 is La, Gd, or Lu; and x4 is Br or I. In certain embodiments, the scintillator composition can include a single dopant or mixture of dopants.
    Type: Application
    Filed: December 7, 2017
    Publication date: June 21, 2018
    Applicant: Radiation Monitoring Devices, Inc.
    Inventors: Kanai S. Shah, William M. Higgins, Edgar V. Van Loef, Jaroslaw Glodo
  • Patent number: 9916958
    Abstract: Methods and systems for fabricating a film, such as, for example, a photocathode, having a tailored band structure and thin-film components that can be tailored for specific applications, such as, for example photocathode having a high quantum efficiency, and simple components fabricated by those methods.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: March 13, 2018
    Assignees: RADIATION MONITORING DEVICES, INC., THE UNIVERSITY OF CHICAGO, BROOKHAVEN SCIENCE ASSOCIATES, LLC
    Inventors: Harish B. Bhandari, Vivek V. Nagarkar, Olena E. Ovechkina, Henry J. Frisch, Klaus Attenkofer, John M. Smedley
  • Publication number: 20180052241
    Abstract: A dual-mode, hand-held, digital probe, designed to rapidly localize tissues of interest through gamma detection, and provide high-resolution, real-time images of the suspect area by sensing beta radiation is presented. A position-sensitive solid-state photomultiplier is optically bonded with a hybrid scintillator including a thin Crystalline Microcolumnar Structure (CMS) CsI:T1 scintillator, vapor-deposited directly onto a monolithic (polycrystalline) LYSO scintillator.
    Type: Application
    Filed: August 15, 2017
    Publication date: February 22, 2018
    Applicant: Radiation Monitoring Devices, Inc.
    Inventors: Vivek V. Nagarkar, Bipin Singh, Hamid Sabet, Haris Kudrolli
  • Publication number: 20180031646
    Abstract: Eddy current detection probes and related methods are disclosed. In some embodiments, the eddy current detection probes are hybrid probes, including a solid state sensor and a detection loop. In some embodiments, the eddy current detection probes include a drive coil and a detection loop, with the detection loop having a sensitive axis that is not parallel to principal axis of the drive coil. In some such embodiments, the sensitive axis of the detection loop is perpendicular to the principal axis of the drive coil.
    Type: Application
    Filed: June 12, 2017
    Publication date: February 1, 2018
    Applicant: Radiation Monitoring Devices, Inc.
    Inventors: Timothy C. Tiernan, Mark Steinback, Noa M. Rensing, Evan R. Weststrate
  • Patent number: 9835742
    Abstract: The present disclosure provides a neutron imaging detector and a method for detecting neutrons. In one example, a method includes providing a neutron imaging detector including plurality of memory cells and a conversion layer on the memory cells, setting one or more of the memory cells to a first charge state, positioning the neutron imaging detector in a neutron environment for a predetermined time period, and reading a state change at one of the memory cells, and measuring a charge state change at one of the plurality of memory cells from the first charge state to a second charge state less than the first charge state, where the charge state change indicates detection of neutrons at said one of the memory cells.
    Type: Grant
    Filed: March 23, 2016
    Date of Patent: December 5, 2017
    Assignee: RADIATION MONITORING DEVICES, INC
    Inventors: Vivek V. Nagarkar, Mitali J. More
  • Publication number: 20170327739
    Abstract: The present invention relates to scintillator compositions and related devices and methods. The scintillator compositions may include, for example, a scintillation compound and a dopant, the scintillation compound having the formula x1-x2-x3-x4 and x1 is Cs; x2 is Na; x3 is La, Gd, or Lu; and x4 is Br or I. In certain embodiments, the scintillator composition can include a single dopant or mixture of dopants.
    Type: Application
    Filed: May 23, 2017
    Publication date: November 16, 2017
    Applicant: Radiation Monitoring Devices, Inc.
    Inventors: Kanai S. Shah, William M. Higgins, Edgar V. Van Loef, Jaroslaw Glodo
  • Publication number: 20170279001
    Abstract: A detector for detecting radiation is generally described. The detector can comprise at least one ionic semiconductor material. For example, the ionic semiconductor material comprises a thallium halide and/or an indium halide. Electrical contacts are formed on the semiconductor material to provide a voltage to the detector during use. At least one of the electrical contacts may comprise a liquid that contains ions. In some instances, at least one electrical contact comprises a metal, such as Cr, Ti, W, Mo, or Pb. In some embodiments, the detector comprises both an electrical contact comprising liquid comprising ions and an electrical contact comprising a metal selected from a group consisting of Cr, Ti, W, Mo, and Pb. Detectors for detecting radiation, as described herein, may have beneficial properties.
    Type: Application
    Filed: November 7, 2016
    Publication date: September 28, 2017
    Applicant: Radiation Monitoring Devices, Inc.
    Inventors: Kanai S. Shah, Andrey Gueorguiev, Leonard Cirignano, Hadong Kim, Alireza Kargar
  • Patent number: 9752073
    Abstract: Strontium halide scintillators, calcium halide scintillators, cerium halide scintillators, cesium barium halide scintillators, and related devices and methods are provided.
    Type: Grant
    Filed: August 8, 2014
    Date of Patent: September 5, 2017
    Assignee: Radiation Monitoring Devices, Inc.
    Inventor: Vivek Nagarkar
  • Patent number: 9728667
    Abstract: A device that detects single optical and radiation events and that provides improved blue detection efficiency and lower dark currents than prior silicon SSPM devices. The sensing element of the devices is a photodiode that may be used to provide single photon detection through the process of generating a self-sustained avalanche. The type of diode is called a Geiger photodiode or signal photon-counting avalanche diode. A CMOS photodiode can be fabricated using a “buried” doping layer for the P-N junction, where the high doping concentration and P-N junction is deep beneath the surface, and the doping concentration at the surface of the diode may be low. The use of a buried layer with a high doping concentration compared to the near surface layer of the primary P-N junction allows for the electric field of the depletion region to extend up near the surface of the diode. With a low doping concentration through the bulk of the diode, the induced bulk defects are limited, which may reduce the dark current.
    Type: Grant
    Filed: February 19, 2016
    Date of Patent: August 8, 2017
    Assignee: Radiation Monitoring Devices, Inc.
    Inventors: Erik Bjorn Johnson, Xiao Jie Chen, Chad Whitney, Christopher Stapels, James F. Christian
  • Patent number: 9720105
    Abstract: Strontium halide scintillators, calcium halide scintillators, cerium halide scintillators, cesium barium halide scintillators, and related devices and methods are provided.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: August 1, 2017
    Assignee: Radiation Monitoring Devices, Inc.
    Inventors: Vivek V. Nagarkar, Harish B. Bhandari
  • Publication number: 20170211203
    Abstract: Li-containing scintillator compositions, as well as related structures and methods are described. Radiation detection systems and methods are described which include a Cs2LiLn Halide scintillator composition.
    Type: Application
    Filed: September 30, 2016
    Publication date: July 27, 2017
    Applicant: Radiation Monitoring Devices, Inc.
    Inventors: Kanai S. Shah, William M. Higgins, Edgar V. Van Loef, Jaroslaw Glodo, Rastgo Hawrami, Urmila Shirwadkar
  • Patent number: 9678175
    Abstract: Eddy current detection probes and related methods are disclosed. In some embodiments, the eddy current detection probes are hybrid probes, including a solid state sensor and a detection loop. In some embodiments, the eddy current detection probes include a drive coil and a detection loop, with the detection loop having a sensitive axis that is not parallel to principal axis of the drive coil. In some such embodiments, the sensitive axis of the detection loop is perpendicular to the principal axis of the drive coil.
    Type: Grant
    Filed: June 22, 2011
    Date of Patent: June 13, 2017
    Assignee: Radiation Monitoring Devices, Inc.
    Inventors: Timothy C. Tiernan, Mark Steinback, Noa M. Rensing, Evan Weststrate
  • Patent number: 9490374
    Abstract: A detector for detecting radiation is generally described. The detector can comprise at least one ionic semiconductor material. For example, the ionic semiconductor material comprises a thallium halide and/or an indium halide. Electrical contacts are formed on the semiconductor material to provide a voltage to the detector during use. At least one of the electrical contacts may comprise a liquid that contains ions. In some instances, at least one electrical contact comprises a metal, such as Cr, Ti, W, Mo, or Pb. In some embodiments, the detector comprises both an electrical contact comprising liquid comprising ions and an electrical contact comprising a metal selected from a group consisting of Cr, Ti, W, Mo, and Pb. Detectors for detecting radiation, as described herein, may have beneficial properties.
    Type: Grant
    Filed: May 6, 2013
    Date of Patent: November 8, 2016
    Assignee: Radiation Monitoring Devices, Inc.
    Inventors: Kanai S. Shah, Andrey Gueorguiev, Leonard Cirignano, Hadong Kim, Alireza Kargar
  • Patent number: 9466747
    Abstract: Solid state avalanche photodiode devices and methods of producing the same are described herein.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: October 11, 2016
    Assignee: Radiation Monitoring Devices, Inc.
    Inventors: Richard Farrell, Richard Myers, Kofi Vanderpuye, Mickel McClish
  • Publication number: 20160291169
    Abstract: Scintillator materials, as well as related systems, and methods of detection using the same, are described herein. The scintillator material composition may comprise a Tl-based scintillator material. For example, the composition may comprise a thallium-based halide. Such materials have been shown to have particularly attractive scintillation properties and may be used in a variety of applications for detection radiation.
    Type: Application
    Filed: January 6, 2016
    Publication date: October 6, 2016
    Applicant: Radiation Monitoring Devices, Inc.
    Inventors: Rastgo Hawrami, Lakshmi Soundara Pandian, Kanai S. Shah
  • Patent number: 9459357
    Abstract: Li-containing scintillator compositions, as well as related structures and methods are described. Radiation detection systems and methods are described which include a Cs2LiLn Halide scintillator composition.
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: October 4, 2016
    Assignee: Radiation Monitoring Devices, Inc.
    Inventors: Kanai S. Shah, William M. Higgins, Edgar V. Van Loef, Jaroslaw Glodo, Rastgo Hawrami, Urmila Shirwadkar
  • Patent number: 9417343
    Abstract: A neutron detector and a method for fabricating a neutron detector. The neutron detector includes a photodetector, and a solid-state scintillator operatively coupled to the photodetector. In one aspect, the method for fabricating a neutron detector includes providing a photodetector, and depositing a solid-state scintillator on the photodetector to form a detector structure.
    Type: Grant
    Filed: June 3, 2015
    Date of Patent: August 16, 2016
    Assignee: Radiation Monitoring Devices, Inc.
    Inventors: Harish B. Bhandari, Vivek V. Nagarkar, Olena E. Ovechkina