Patents by Inventor Luis Stand
Luis Stand 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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Publication number: 20240117246Abstract: Doped halide scintillator materials of the formulas A2B1-iX4:Di, AB1-iX2:Di, A1-iX:Di, and A3B1-iX5:Di, wherein A is one or more monovalent cations (e.g., Tl, In, Li, Na, K, Rb, or Cs); B is one or more divalent cations (e.g., Be, Mg, Ca, Sr, Ba, Zn, Cd, and Hg), X is one or more halide, and D is one or more transition or post-transition metal dopant ions (e.g., Zn, Cd, Hg, Cu, Mn, and Ga) are described. Also described are non-doped halide scintillator materials of the formula A3BX5, related radiation detectors, methods of detecting high energy radiation, and methods of preparing the scintillator materials.Type: ApplicationFiled: September 18, 2023Publication date: April 11, 2024Applicant: University of Tennessee Research FoundationInventors: Luis Stand Stracuzzi, Daniel Joseph Rutstrom, Mariya Zhuravleva, Charles L. Melcher
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Patent number: 11339326Abstract: Inorganic halides (e.g., inorganic halide scintillators) of the general formula A3B2X9, including inorganic halides comprising thallium monovalent cations and/or combinations of different halides, are described. Radiation detectors including the inorganic halide scintillators and methods of using the detectors to detect high energy radiation are also described. In some cases, the scintillators can include a gadolinium cation, a boron cation, a lithium cation, a chloride ion, or combinations thereof and the scintillator can be used to detect neutrons.Type: GrantFiled: January 22, 2021Date of Patent: May 24, 2022Assignee: University of Tennessee Research FoundationInventors: Daniel Joseph Rutstrom, Luis Stand, Merry A. Koschan, Mariya Zhuravleva, Charles L. Melcher
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Publication number: 20220025257Abstract: Ternary transition metal halides are described herein. The ternary transition metal halides may be used as scintillator materials.Type: ApplicationFiled: April 26, 2021Publication date: January 27, 2022Inventors: Luis Stand Stracuzzi, Mao-Hua Du, Edgar V. Van Loef, Merry A. Koschan, Mariya Zhuravleva, Charles L. Melcher, Kanai S. Shah
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Publication number: 20210253952Abstract: Inorganic halides (e.g., inorganic halide scintillators) of the general formula A3B2X9, including inorganic halides comprising thallium monovalent cations and/or combinations of different halides, are described. Radiation detectors including the inorganic halide scintillators and methods of using the detectors to detect high energy radiation are also described. In some cases, the scintillators can include a gadolinium cation, a boron cation, a lithium cation, a chloride ion, or combinations thereof and the scintillator can be used to detect neutrons.Type: ApplicationFiled: January 22, 2021Publication date: August 19, 2021Inventors: Daniel Joseph Rutstrom, Luis Stand, Merry A. Koschan, Mariya Zhuravleva, Charles L. Melcher
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Patent number: 11060024Abstract: Mixed halide scintillation materials of the general formula AB(1?y)MyX?wX?(3?w), where 0?y?1, 0.05?w?1, A may be an alkali metal, B may be an alkali earth metal, and X? and X? may be two different halogen atoms, and of the general formula A(1?y)BMyX?wX?(3?w), where 0?y?1, 0.05?w?1, A maybe an alkali metal, B may be an alkali earth metal, and X? and X? are two different halogen atoms. The scintillation materials of formula (1) include a divalent external activator, M, such as Eu2+ or Yb2+. The scintillation materials of formula (2) include a monovalent external activator, M, such as Tl+, Na+ and In+.Type: GrantFiled: June 26, 2019Date of Patent: July 13, 2021Assignee: University of Tennessee Research FoundationInventors: Luis Stand, Charles L. Melcher, Mariya Zhuravleva, Hua Wei
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Patent number: 10591617Abstract: Metal halide optical materials (e.g., scintillator materials or persistent phosphors) are described. More particularly, the optical materials include codoped perovskite-type halides, wherein the codoping ion is present at a molar ratio of 5000 parts per million (ppm) or less with respect to all cations. For example, the optical material can be a codoped trihalide having the formula ABX3 where A is one or more alkali metal, B is one or more alkali earth metal, and X is one or more halide that is doped with up to about 10 atomic percent of a dopant ion and codoped with up to about 5000 ppm of one or more isovalent or aliovalent codopant ion, such as a tetravalent ion (e.g., Zr4+), a trivalent ion (e.g., Sc3+, Y3+, Gd3+, or La3+ ion) or a divalent ion (e.g., Mg2+). The codoped material can have modified afterglow compared to a noncodoped material.Type: GrantFiled: May 3, 2018Date of Patent: March 17, 2020Assignee: University of Tennessee Research FoundationInventors: Yuntao Wu, Mariya Zhuravleva, Luis Stand, Charles L. Melcher
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Publication number: 20190322933Abstract: Mixed halide scintillation materials of the general formula AB(1?y)MyX?wX?(3?w), where 0?y?1, 0.05?w?1, A may be an alkali metal, B may be an alkali earth metal, and X? and X? may be two different halogen atoms, and of the general formula A(1?y)BMyX?wX?(3?w), where 0?y?1, 0.05?w?1, A maybe an alkali metal, B may be an alkali earth metal, and X? and X? are two different halogen atoms. The scintillation materials of formula (1) include a divalent external activator, M, such as Eu2+ or Yb2+. The scintillation materials of formula (2) include a monovalent external activator, M, such as Tl+, Na+ and In+.Type: ApplicationFiled: June 26, 2019Publication date: October 24, 2019Applicant: University of Tennessee Research FoundationInventors: Luis STAND, Charles L. MELCHER, Mariya ZHURAVLEVA, Hua WEI
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Patent number: 10377945Abstract: Mixed halide scintillation materials of the general formula AB(1-y)MyX?wX?(3-w), where 0?y?1, 0.05?w?1, A may be an alkali metal, B may be an alkali earth metal, and X? and X? may be two different halogen atoms, and of the general formula A(1-y)BMyX?wX?(3-w), where 0?y?1, 0.05?w?1, A maybe an alkali metal, B may be an alkali earth metal, and X? and X? are two different halogen atoms. The scintillation materials of formula (1) include a divalent external activator, M, such as Eu2+ or Yb2+. The scintillation materials of formula (2) include a monovalent external activator, M, such as Tl+, Na+ and In+.Type: GrantFiled: May 8, 2015Date of Patent: August 13, 2019Assignee: UNIVERSITY OF TENNESSEE RESEARCH FOUNDATIONInventors: Luis Stand, Charles L. Melcher, Mariya Zhuravleva, Hua Wei
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Patent number: 10351768Abstract: Mixed halide scintillation materials of a first general formula A4B(1-y)MyX?6(1-z)X?6z and a second general formula A(4-y)BMyX?6(1-z)X?6z are disclosed. In the general formulas, A is an alkali metal, B is an alkaline earth metal, and X? and X? are two different halogen atoms. Scintillation materials of the first general formula include a divalent external activator M such as Eu2+ or Yb2+ or a trivalent external activator M such as Ce3+. Scintillation materials of the second general formula include a monovalent external activator M such as In+, Na+, or Tl+ or a trivalent external activator such as Ce3+.Type: GrantFiled: November 15, 2016Date of Patent: July 16, 2019Assignee: UNIVERSITY OF TENNESSEE RESEARCH FOUNDATIONInventors: Luis Stand, Mariya Zhuravleva, Kan Yang, Charles L. Melcher, Adam Coleman Lindsey
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Patent number: 10221355Abstract: Metal halide scintillators are described. More particularly, the scintillators include Tl and/or In-based ternary metal halides, such as those of the formulas A2BX4 and AB2X5, wherein A is an alkali metal, such as Li, Na, K, Rb, Cs or any combination thereof; B is an alkali earth metal, such as Be, Mg, Ca, Sr, Ba or any combination thereof; X is a halide, such as Cl, Br, I, F or any combination thereof; some or all of A has been replaced by Tl and/or In, and some or all of B has been replaced by another dopant, such as Eu, Ce, Tb, Yb, and Pr. Radiation detectors comprising the metal halide scintillators are also described.Type: GrantFiled: January 10, 2018Date of Patent: March 5, 2019Assignee: University of Tennessee Research FoundationInventors: Luis Stand, Mariya Zhuravleva, Charles L. Melcher
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Publication number: 20180321393Abstract: Metal halide optical materials (e.g., scintillator materials or persistent phosphors) are described. More particularly, the optical materials include codoped perovskite-type halides, wherein the codoping ion is present at a molar ratio of 5000 parts per million (ppm) or less with respect to all cations. For example, the optical material can be a codoped trihalide having the formula ABX3 where A is one or more alkali metal, B is one or more alkali earth metal, and X is one or more halide that is doped with up to about 10 atomic percent of a dopant ion and codoped with up to about 5000 ppm of one or more isovalent or aliovalent codopant ion, such as a tetravalent ion (e.g., Zr4+), a trivalent ion (e.g., Sc3+, Y3+, Gd3+, or La3+ ion) or a divalent ion (e.g., Mg2+). The codoped material can have modified afterglow compared to a noncodoped material.Type: ApplicationFiled: May 3, 2018Publication date: November 8, 2018Inventors: Yuntao Wu, Mariya Zhuravleva, Luis Stand, Charles L. Melcher
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Publication number: 20180155620Abstract: Metal halide scintillators are described. More particularly, the scintillators include Tl and/or In-based ternary metal halides, such as those of the formulas A2BX4 and AB2X5, wherein A is an alkali metal, such as Li, Na, K, Rb, Cs or any combination thereof; B is an alkali earth metal, such as Be, Mg, Ca, Sr, Ba or any combination thereof; X is a halide, such as Cl, Br, I, F or any combination thereof; some or all of A has been replaced by Tl and/or In, and some or all of B has been replaced by another dopant, such as Eu, Ce, Tb, Yb, and Pr. Radiation detectors comprising the metal halide scintillators are also described.Type: ApplicationFiled: January 10, 2018Publication date: June 7, 2018Inventors: Luis Stand, Mariya Zhuravleva, Charles L. Melcher
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Publication number: 20180105745Abstract: Metal halide scintillators are described. More particularly, the scintillators include doped (e.g., europium-doped) ternary metal halides, such as those of the formulas A2BX4 and AB2X5, wherein A is an alkali metal, such as Li, Na, K, Rb, Cs or any combination thereof; B is an alkali earth metal, such as Be, Mg, Ca, Sr, Ba or any combination thereof; and X is a halide, such as Cl, Br, I, F or any combination thereof. Radiation detectors comprising the novel metal halide scintillators and other ternary metal halides, such as those of the formulas A2EuX4 and AEu2X5, wherein A is an alkali metal and X is a halide, are also described.Type: ApplicationFiled: June 27, 2017Publication date: April 19, 2018Inventors: Luis Stand, Mariya Zhuravleva, Charles L. Melcher
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Publication number: 20170218265Abstract: Mixed halide scintillation materials of a first general formula A4B(1-y)MyX?6(1-z)X?6z and a second general formula A(4-y)BMyX?6(1-z)X?6z are disclosed. In the general formulas, A is an alkali metal, B is an alkali earth metal, and X? and X? are two different halogen atoms. Scintillation materials of the first general formula include a divalent external activator M such as Eu2+ or Yb2+ or a trivalent external activator M such as Ce3+. Scintillation materials of the second general formula include a monovalent external activator M such as In+, Na+, or Tl+ or a trivalent external activator such as Ce3+.Type: ApplicationFiled: November 15, 2016Publication date: August 3, 2017Inventors: Luis Stand, Mariya Zhuravleva, Kan Yang, Charles L. Melcher, Adam Coleman Lindsey
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Publication number: 20170190969Abstract: Metal halide scintillators are described. More particularly, the scintillators include doped (e.g., europium-doped) ternary metal halides, such as those of the formulas A2BX4 and AB2X5, wherein A is an alkali metal, such as Li, Na, K, Rb, Cs or any combination thereof; B is an alkali earth metal, such as Be, Mg, Ca, Sr, Ba or any combination thereof; and X is a halide, such as Cl, Br, I, F or any combination thereof. Radiation detectors comprising the novel metal halide scintillators and other ternary metal halides, such as those of the formulas A2EuX4 and AEu2X5, wherein A is an alkali metal and X is a halide, are also described.Type: ApplicationFiled: March 17, 2017Publication date: July 6, 2017Inventors: Luis Stand, Mariya Zhuravleva, Charles L. Melcher
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Patent number: 9695356Abstract: Metal halide scintillators are described. More particularly, the scintillators include doped (e.g., europium-doped) ternary metal halides, such as those of the formulas A2BX4 and AB2X5, wherein A is an alkali metal, such as Li, Na, K, Rb, Cs or any combination thereof; B is an alkali earth metal, such as Be, Mg, Ca, Sr, Ba or any combination thereof; and X is a halide, such as Cl, Br, I, F or any combination thereof. Radiation detectors comprising the novel metal halide scintillators and other ternary metal halides, such as those of the formulas A2EuX4 and AEu2X5, wherein A is an alkali metal and X is a halide, are also described.Type: GrantFiled: March 17, 2017Date of Patent: July 4, 2017Assignee: University of Tennessee Research FoundationInventors: Luis Stand, Mariya Zhuravleva, Charles L. Melcher
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Patent number: 9624429Abstract: Metal halide scintillators are described. More particularly, the scintillators include doped (e.g., europium-doped) ternary metal halides, such as those of the formulas A2BX4 and AB2X5, wherein A is an alkali metal, such as Li, Na, K, Rb, Cs or any combination thereof; B is an alkali earth metal, such as Be, Mg, Ca, Sr, Ba or any combination thereof; and X is a halide, such as Cl, Br, I, F or any combination thereof. Radiation detectors comprising the novel metal halide scintillators and other ternary metal halides, such as those of the formulas A2EuX4 and AEu2X5, wherein A is an alkali metal and X is a halide, are also described.Type: GrantFiled: July 18, 2014Date of Patent: April 18, 2017Assignee: University of Tennessee Research FoundationInventors: Luis Stand, Mariya Zhuravleva, Charles L. Melcher
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Publication number: 20170058196Abstract: Mixed halide scintillation materials of the general formula AB(1-y)MyX?wX?(3-w), where 0?y?1, 0.05?w?1, A may be an alkali metal, B may be an alkali earth metal, and X? and X? may be two different halogen atoms, and of the general formula A(1-y)BMyX?wX?(3-w), where 0?y?1, 0.05?w?1, A maybe an alkali metal, B may be an alkali earth metal, and X? and X? are two different halogen atoms. The scintillation materials of formula (1) include a divalent external activator, M, such as Eu2+ or Yb2+. The scintillation materials of formula (2) include a monovalent external activator, M, such as Tl+, Na+ and In+.Type: ApplicationFiled: May 8, 2015Publication date: March 2, 2017Inventors: Luis Stand, Charles L. Melcher, Mariya Zhuravleva, Hua Wei
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Patent number: 9561969Abstract: The present disclosure is directed to a group of newly discovered intrinsic scintillation compounds. As intrinsic scintillators, these compounds do not require an external activator as a dopant. The new scintillators may include members of two elpasolite families with the general exemplary formulas of A2BMX(6-y)X?y and A3MX(6-y)X?y, (0<y<6).Type: GrantFiled: April 16, 2015Date of Patent: February 7, 2017Assignee: University of Tennessee Research FoundationInventors: Hua Wei, Luis Stand, Mariya Zhuravleva, Charles Melcher
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Publication number: 20160168458Abstract: Metal halide scintillators are described. More particularly, the scintillators include doped (e.g., europium-doped) ternary metal halides, such as those of the formulas A2BX4 and AB2X5, wherein A is an alkali metal, such as Li, Na, K, Rb, Cs or any combination thereof; B is an alkali earth metal, such as Be, Mg, Ca, Sr, Ba or any combination thereof; and X is a halide, such as Cl, Br, I, F or any combination thereof. Radiation detectors comprising the novel metal halide scintillators and other ternary metal halides, such as those of the formulas A2EuX4 and AEu2X5, wherein A is an alkali metal and X is a halide, are also described.Type: ApplicationFiled: July 18, 2014Publication date: June 16, 2016Applicant: UNIVERSITY OF TENNESSEE RESEARCH FOUNDATIONInventors: Luis Stand, Mariya Zhuravleva, Charles L. Melcher