摘要:
A method of making a luminescent nanomaterial having a plurality of nanoparticles. The luminescent nanomaterial includes at least one lanthanide group metal phosphate and at least one lanthanide series dopant, wherein each of the plurality of nanoparticles has a predetermined morphology. The luminescent nanomaterial has a high quantum efficiency and a high absorption value. The method yields a variety of morphologies and sizes of the plurality of nanoparticles. The particles size of the luminescent material varies from tens of nanometers to a few hundred of nanometers.
摘要:
A nanoreactor assembly and method for making the same are described. The nanoreactor assembly includes a ceramic structure with at least one opening, and a porous filler material having a plurality of regions and being disposed within the at least one opening. Each of the regions are architecturally engineered to include at least one specific pore architecture. Each of the specific pore architectures are chosen to enable a chemical process to be performed within said ceramic structure. The method includes providing a ceramic structure that has at least one opening, introducing a porous filler material into the at least one opening, and introducing at least one chemical to the nanoreactor assembly.
摘要:
A method for making a phosphor composition is provided. The method includes the steps of providing a first phosphor comprising a visible-light-emitting phosphor; providing a second phosphor having an average primary crystallite size of less than about 100 nm and disposing the second phosphor onto to the first phosphor. The second phosphor includes at least one phosphor selected from a group consisting of a visual light emitting phosphor, ultraviolet (VUV) light emitting phosphor and a quantum splitting phosphor.
摘要:
A method is provided that includes heating a powder to a temperature that is below the melting point of the scintillator composition but is sufficiently high to form a coherent mass. The powder includes a scintillator composition. The coherent mass is polycrystalline and has a pulse height resolution that is less than 20 percent at 662 kilo electron volts; a light yield of more than 5000 photons per milli electron volt; or both a pulse height resolution that is less than 20 percent at 662 kilo electron volts and a light yield of more than 5000 photons per milli electron. A sintered body is provided also.
摘要:
A Magnetic Resonance Imaging (MRI) system having a vacuum vessel positioned about an imaging volume, one or more high temperature superconducting coils positioned within the vacuum vessel, and a cryocooler coupled to the vacuum vessel to operate the superconducting coil at a temperature above 10 K. At least one gradient coil is positioned between an imaging volume and the superconducting coil without any thermal shielding interposed between the gradient coil and the superconducting coil.
摘要:
A sensing element or detector activated by radiation comprising a first scintillator activated by gamma radiation; and a neutron sensing layer comprising a second scintillator activated by neutron radiation.
摘要:
A structure includes a substantially non-conductive frame having an exterior surface. The structure defines a plurality of passages that open to the exterior surface. Mesoporous material is disposed in the plurality of passages and is supported therein by the frame. In a method for making a mesoporous nanocrystalline titania hybrid material, a templating agent, an acid, and a titania precursor is mixed into a template liquid. A frame that defines a plurality of passages is placed into the template liquid. A solvent is evaporated from the template liquid, thereby forming a titania gel encapsulating the templating agent. The gel is heated to remove substantially the templating agent from the non-conductive frame and the titania, thereby leaving a mesoporous titania material.
摘要:
A light source comprises: (a) a source of plasma discharge that emits electromagnetic radiation, a portion of which has wavelengths shorter than about 200 nm; and (b) a phosphor composition that comprises particles, each of the particles comprising at least a first phosphor and at least a second phosphor, the phosphor composition is disposed such that the first phosphor absorbs substantially the portion of EM radiation having wavelengths shorter than about 200 nm, and the first phosphor emits EM radiation having wavelengths longer than about 200 nm.
摘要:
A method for securing data and/or applications within a cloud computing architecture is provided. According to the invention, a security module is provided, the security module being administered by the user of said virtual server(s) which is/are dedicated to said user; said security module is provided with one or more security policies to be applied to the data managed by the virtual servers dedicated to said user; said security module is provided with identifiers as well as keys to access the user's dedicated virtual servers; the security module accesses the user's dedicated virtual server; the security module exports the security policies, which have been provided to it, to the dedicated virtual servers; and the dedicated virtual servers apply the security policies, which have been provided to them by the security module, to the data they manage.