Patents by Inventor Krishnaprasad Sankar

Krishnaprasad Sankar 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).

  • Halide-based scintillator nanomaterial
    Patent number: 9644141
    Abstract: A heterogeneous scintillator material is provided comprising core/shell nanoparticles having a highly hygroscopic or deliquescent halide-based core activated with trivalent Ln3+ or divalent Ln2+ lanthanide ions (Ln=La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu) and a stable non-hygroscopic shell thereon. The heterogeneous nanoparticles can comprise highly hygroscopic lanthanide halide (LaBr3, LuI3) cores protected with stable non-hygroscopic LaF3 shells. The heterogeneous nanoparticles can comprise deliquescent alkaline earth halide (SrI2, BaI2) cores protected with stable non-hygroscopic (SrF2, BaF2) shells.
    Type: Grant
    Filed: March 26, 2013
    Date of Patent: May 9, 2017
    Assignee: STC.UNM
    Inventors: Marek A. Osinski, Nathan J. Withers, Brian A. Akins, Gennady A. Smolyakov, Krishnaprasad Sankar
  • Halide-based scintillator nanomaterial
    Publication number: 20130299720
    Abstract: A heterogeneous scintillator material is provided comprising core/shell nanoparticles having a highly hygroscopic or deliquescent halide-based core activated with trivalent Ln3+ or divalent Ln2+ lanthanide ions (Ln=La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu) and a stable non-hygroscopic shell thereon. The heterogeneous nanoparticles can comprise highly hygroscopic lanthanide halide (LaBr3, LuI3) cores protected with stable non-hygroscopic LaF3 shells. The heterogeneous nanoparticles can comprise deliquescent alkaline earth halide (SrI2, BaI2) cores protected with stable non-hygroscopic (SrF2, BaF2) shells.
    Type: Application
    Filed: March 26, 2013
    Publication date: November 14, 2013
    Applicant: STC.UNM
    Inventors: Marek A. Osinski, Nathan J. Withers, Brian A. Akins, Gennady A. Smolyakov, Krishnaprasad Sankar
  • Halide-based scintillator nanomaterial
    Patent number: 8431041
    Abstract: Scintillator material comprising nanoparticles (nanocrystals) comprising lead (Pb), iodine (I), and optionally one or both of oxygen (O) and hydrogen (H) wherein the nanoparticles exhibit room-temperature scintillation under gamma irradiation. The scintillator nanoparticles can comprise Pb3O2I2. The scintillator nanoparticles can comprise PbIOH in generally equiatomic proportions or non-equiatomic variants thereof that exhibit scintillation under gamma irradiation. The scintillator nanoparticles have a particle dimension in the range of about 5 to about 100 nm. Microparticles (microcrystals) also are provided comprising lead (Pb), iodine (I), and optionally one or both of oxygen (O) and hydrogen (H) grown in a nanoparticle colloidal solution over time to a particle dimension greater than 0.1 ?m, such as about 2 microns.
    Type: Grant
    Filed: April 17, 2009
    Date of Patent: April 30, 2013
    Assignee: STC.UNM
    Inventors: Marek A. Osinski, Nathan J. Withers, Brian A. Akins, Gennady A. Smolyakov, Krishnaprasad Sankar
  • Lead-iodide-based scintillator materials
    Publication number: 20100072374
    Abstract: Scintillator material comprising nanoparticles (nanocrystals) comprising lead (Pb), iodine (I), and optionally one or both of oxygen (O) and hydrogen (H) wherein the nanoparticles exhibit room-temperature scintillation under gamma irradiation. The scintillator nanoparticles can comprise Pb3O2I2. The scintillator nanoparticles can comprise PbIOH in generally equiatomic proportions or non-equiatomic variants thereof that exhibit scintillation under gamma irradiation. The scintillator nanoparticles have a particle dimension in the range of about 5 to about 100 nm. Microparticles (microcrystals) also are provided comprising lead (Pb), iodine (I), and optionally one or both of oxygen (O) and hydrogen (H) grown in a nanoparticle colloidal solution over time to a particle dimension greater than 0.1 ?m, such as about 2 microns.
    Type: Application
    Filed: March 30, 2009
    Publication date: March 25, 2010
    Inventors: Marek A. Osinski, Nathan J. Withers, Brian A. Akins, Gennady A. Smolyakov, Krishnaprasad Sankar
  • Halide-based scintillator nanomaterial
    Publication number: 20100001209
    Abstract: Scintillator material comprising nanoparticles (nanocrystals) comprising lead (Pb), iodine (I), and optionally one or both of oxygen (O) and hydrogen (H) wherein the nanoparticles exhibit room-temperature scintillation under gamma irradiation. The scintillator nanoparticles can comprise Pb3O2I2. The scintillator nanoparticles can comprise PbIOH in generally equiatomic proportions or non-equiatomic variants thereof that exhibit scintillation under gamma irradiation. The scintillator nanoparticles have a particle dimension in the range of about 5 to about 100 nm. Microparticles (microcrystals) also are provided comprising lead (Pb), iodine (I), and optionally one or both of oxygen (O) and hydrogen (H) grown in a nanoparticle colloidal solution over time to a particle dimension greater than 0.1 ?m, such as about 2 microns.
    Type: Application
    Filed: April 17, 2009
    Publication date: January 7, 2010
    Inventors: Marek A. Osinski, Nathan J. Withers, Brian A. Akins, Gennady A. Smolyakov, Krishnaprasad Sankar