Abstract: A method for determining a production of a luminaire (100) via 3D-printing, and a 3D-printing apparatus for production of a luminaire, and a luminaire, are provided. The method comprises the steps of defining a suspension point (110) of the luminaire, defining a fixation line (120) through the luminaire, defining a plurality of cross-sectional shapes (130) of the luminaire along the vertical axis, z, and for each cross-sectional shape of the plurality of cross-sectional shapes of the luminaire, minimizing a distance, R0, between the fixation point and a center of mass, Mt, of a first sector, S1, and a second sector, S2, of the cross-sectional shape.

Abstract: An improved scintillator nanocomposite comprising nanoparticles with scintillating properties and a diameter between 10 and 50 nanometer and a first matrix material comprises is obtained by introducing the nanoparticles into a dispersing medium to form a stable suspension. The dispersing medium is a precursor to the first matrix material, which is cured to form the first matrix material.

Abstract: The invention relates to a ceramic material (14) for generating light when irradiated with radiation, wherein the ceramic material comprises a stack of layers (15, 16) having different compositions and/or different dopings. The ceramic material may be used in a spectral computed tomography (CT) detector, in order to spectrally detect x-rays, or it may be used as a ceramic gain medium of a laser such that temperature gradients and corresponding thermo-mechanical stresses within the gain medium can be reduced.

Abstract: The present invention relates to a heating device. In order to allow heating essentially without any latency period and with low costs, the heating device comprises: at least one container (12) having an inlet opening (14) and an outlet opening (16) and comprising an adsorbent agent (18) being provided between said inlet opening (14) and outlet opening (16) and being capable of adsorbing an adsorbate thereby releasing adsorption energy; and a gas conveying device (21) for conveying an adsorbate comprising gas through the interior of the container (12); wherein a gas conduit (22) is provided being connected to the outlet opening (16) of the container (12) for guiding the gas heated by adsorption energy inside the container (12) to a location to be heated with elevated temperature. The present invention further relates to a heating method.

Abstract: The invention relates to a ceramic material (14) for generating light when irradiated with radiation, wherein the ceramic material comprises a stack of layers (15, 16) having different compositions and/or different dopings. The ceramic material may be used in a spectral computed tomography (CT) detector, in order to spectrally detect x-rays, or it may be used as a ceramic gain medium of a laser such that temperature gradients and corresponding thermo-mechanical stresses within the gain medium can be reduced.

Abstract: The invention relates to an a sensor system (100) for quantitatively detecting at least one compound in a fluid mixture, said fluid mixture comprising the compound to be detected, wherein the sensor system (100) comprises a sorbent material (102) being capable of sorbing the at least one compound to be detected, wherein the sorbent material (102) undergoes a temperature change when sorbing the at least one compound; at least a first temperature sensor (104) for measuring the temperature of the sorbent material (102); and a control unit (110) being adapted for quantitatively determining the at least one compound to be detected based on the temperature change of the sorbent material (102). Such a sensor system (100) provides an improved measurement especially in the field of oxygen concentrators. The invention further relates to an oxygen concentrator (10) for generating oxygen enriched gas as well as to a method of quantitatively detecting at least one compound in a fluid mixture.

Abstract: The invention provides a process for the production of a (particulate) luminescent material comprising particles, especially substantially spherical particles, having a porous inorganic material core with pores, especially macro pores, which are at least partly filled with a polymeric material with luminescent quantum dots embedded therein, wherein the process comprises (i) impregnating the particles of a particulate porous inorganic material with pores with a first liquid (“ink”) comprising the luminescent quantum dots and a curable or polymerizable precursor of the polymeric material, to provide pores that are at least partly filled with said luminescent quantum dots and curable or polymerizable precursor; and (ii) curing or polymerizing the curable or polymerizable precursor within pores of the porous material, as well as a product obtainable thereby.

Abstract: An improved scintillator nanocomposite comprising nanoparticles with scintillating properties and a diameter between 10 and 50 nanometer and a first matrix material comprises is obtained by introducing the nanoparticles into a dispersing medium to form a stable suspension. The dispersing medium is a precursor to the first matrix material, which is cured to form the first matrix material.

Abstract: The present invention relates to hydrodynamic bearings, X-ray tubes, X-ray systems, and a method of manufacturing a hydrodynamic bearing for an X-ray tube. The rotor of a hydrodynamic bearing is supported, in steady-state operation, by the pressure of lubricant which is pumped through grooves in the rotor. When the rotor is speeding up or slowing down, the pumping force will not be sufficient to lift the rotor clear of a stationary bushing, and damage, caused by direct contact of the metal surfaces of the bearing, can occur. Providing special coatings on the bearing surfaces can ameliorate this effect.

Abstract: The invention provides a process for the production of a (particulate) luminescent material comprising particles, especially substantially spherical particles, having a porous inorganic material core with pores, especially macro pores, which are at least partly filled with a polymeric material with luminescent quantum dots embedded therein, wherein the process comprises (i) impregnating the particles of a particulate porous inorganic material with pores with a first liquid (“ink”) comprising the luminescent quantum dots and a curable or polymerizable precursor of the polymeric material, to provide pores that are at least partly filled with said luminescent quantum dots and curable or polymerizable precursor; and (ii) curing or polymerizing the curable or polymerizable precursor within pores of the porous material, as well as a product obtainable thereby.

Abstract: The invention relates to the field of production of barium-scandate dispenser cathodes or other barium-scandate materials. A target (66) containing a mixture of BaO, CaO, Al2O3 and Sc2O3 tends to be more stable, the higher the scandia (scandium oxide) content is. However, an increased scandia content results in a reduced emission capability. A destabilizing effect of BaO and CaO reactions is counteracted by the more inert Sc2O3 and also Al2O3 components, as not only an increased scandia content stabilizes the material but also an increased alumina (aluminum oxide) content improves the stability.

Abstract: A ceramic or polycrystalline scintillator composition is represented by the formula (LuyGd3-y)(GaxAl5-x)O12:Ce; wherein y=1±0.5; wherein x=3±0.25; and wherein Ce is in the range 0.01 mol % to 0.7 mol %. The scintillator composition finds application in the sensitive detection of ionizing radiation and may for example be used in the detection of gamma photons in the field of PET imaging.

Abstract: The invention provides a light emitting semiconductor device comprising a zinc magnesium oxide based layer as active layer, wherein the zinc magnesium oxide based layer comprises an aluminum doped zinc magnesium oxide layer having the nominal composition Zn1-xMgxO with 1-350 ppm Al, wherein x is in the range of 0<x?0.3. The invention further provides a method for the production of such aluminum doped zinc magnesium oxide, the method comprising heat treating a composition comprising Zn, Mg and Al with a predetermined composition at elevated temperatures, and subsequently annealing the heat treated composition to provide said aluminum doped zinc magnesium oxide.

Abstract: Method for producing a light emitting semiconductor device comprising a zinc magnesium oxide based layer as active layer, wherein the zinc magnesium oxide based layer comprises an aluminum doped zinc magnesium oxide layer having the nominal composition Zn1-xMgxO with 1-350 ppm Al, wherein x is in the range of 0<x?0.3. The invention further provides a method for the production of such aluminum doped zinc magnesium oxide, the method comprising heat treating a composition comprising Zn, Mg and Al with a predetermined composition at elevated temperatures, and subsequently annealing the heat treated composition to provide said aluminum doped zinc magnesium oxide.

Abstract: The present invention relates to a method of generating oxygen. The method addresses the objects of reducing the servicing work and improving the purity of the generated oxygen. According to the invention, the method comprises the steps of: providing an oxygen comprising gas at a primary side of a dense voltage drivable membrane; applying a voltage between a conductive element at the primary side of the membrane and a conductive element at a secondary side of the membrane, the conductive elements being electrically connected to the membrane, wherein a plasma is generated at at least one of the primary side and the secondary side of the membrane, the plasma being used as conductive element.

Abstract: The present invention relates to hydrodynamic bearings, X-ray tubes, X-ray systems, and a method of manufacturing a hydrodynamic bearing for an X-ray tube. The rotor of a hydrodynamic bearing is supported, in steady-state operation, by the pressure of lubricant which is pumped through grooves in the rotor. When the rotor is speeding up or slowing down, the pumping force will not be sufficient to lift the rotor clear of a stationary bushing, and damage, caused by direct contact of the metal surfaces of the bearing, can occur. Providing special coatings on the bearing surfaces can ameliorate this effect.

Abstract: A gamma photon detector for detecting 511 keV PET radiation includes a scintillator host material doped with cerium. The cerium is present in a concentration of 0.1 to 1.0 mol %. Lower concentrations increase light output but also decay times which can lead to pile up issues. The higher light output enables the read out area to be decreased which reduces the pile up issues. Embodiments with a cerium concentration as low as 0.15 to 0.2 mol % and a read out area as low as 0.1 cm2 are contemplated.

Abstract: The present invention refers to an oxygen separation device (12, 14) for a pressure swing adsorption system. In order to provide at least one of improved maintenance behavior, longer lifetime and improved energy consumption, the oxygen separation device (12, 14) comprises a gas inlet (18, 22) at a primary side for guiding a flow of oxygen comprising gas into the oxygen separation device (12, 14) and a gas outlet (28, 30) at a secondary side for guiding a flow of oxygen enriched gas out of the oxygen separation device (12, 14), an oxygen separation membrane (78) comprising an oxygen separation sorbent being capable of separating oxygen from an oxygen comprising gas by sorbing at least one component of the oxygen comprising gas apart from oxygen, and a support structure (80) for supporting the oxygen separation membrane (78), wherein the support structure (80) comprises a plurality of support bars (82) being fixed to the oxygen separation membrane (78).

Abstract: The present invention relates to a method of generating oxygen. The method addresses the objects of reducing the servicing work and improving the purity of the generated oxygen. According to the invention, the method comprises the steps of: providing an oxygen comprising gas at a primary side of a dense voltage drivable membrane (12); applying a voltage between a conductive element at the primary side of the membrane (12) and a conductive element at a secondary side of the membrane (12), the conductive elements being electrically connected to the membrane (12), wherein a plasma (18, 20) is generated at at least one of the primary side and the secondary side of the membrane (12), the plasma (18, 20) being used as conductive element.

Abstract: The invention relates to a method of separating oxygen from an oxygen comprising gas, the method comprising the steps of: performing at least a first and a second period of oxygen separation, the first and the second period of oxygen separation each comprising the steps of guiding an oxygen comprising gas to the primary side of an oxygen separation device (12, 14), the oxygen separation device (12, 14) comprising an oxygen separation sorbent (16, 18), and generating a flow of oxygen enriched gas out of the oxygen separation device (12, 14) by creating a pressure difference between the primary side and the secondary side of the oxygen separation device (12, 14), and performing a cooling period between the first and the second period of oxygen separation, wherein the cooling period comprises the steps of guiding a flushing sorbate through the oxygen separation device (12, 14), the flushing sorbate having an adsorption energy e1 with respect to the oxygen separation sorbent (16, 18), and guiding a cooling sorbat