200results about How to "Efficient excitation" patented technology

A light-emitting element with high emission efficiency. The light-emitting element includes a first organic compound, a second organic compound, and a guest material. The LUMO level of the first organic compound is lower than the LUMO level of the second organic compound. The HOMO level of the first organic compound is lower than the HOMO level of the second organic compound. The HOMO level of the guest material is higher than the HOMO level of the second organic compound. The energy difference between the LUMO level of the guest material and the HOMO level of the guest material is larger than the energy difference between the LUMO level of the first organic compound and the HOMO level of the second organic compound. The guest material has a function of converting triplet excitation energy into light emission. The first organic compound and the second organic compound form an exciplex.

Provided is a light-emitting element with high emission efficiency. The light-emitting element includes a first organic compound, a second organic compound, and a guest material. The LUMO level of the first organic compound is lower than that of the second organic compound, and the HOMO level of the first organic compound is lower than that of the second organic compound. The LUMO level of a guest material is higher than that of the first organic compound, and the HOMO level of the guest material is lower than that of the second organic compound. The guest material has a function of converting triplet excitation energy into light emission. The first organic compound and the second organic compound form an exciplex.

Provided is a light-emitting element including a first organic compound, a second organic compound, and a guest material. The LUMO level of the first organic compound is lower than that of the second organic compound. The HOMO level of the first organic compound is lower than that of the second organic compound. The LUMO level of the guest material is higher than that of the first organic compound. The HOMO level of the guest material is higher than that of the second organic compound. An energy difference between the LUMO level and the HOMO level of the guest material is larger than an energy difference between the LUMO level of the first organic compound and the HOMO level of the second organic compound. The guest material can convert triplet excitation energy into light emission. The combination of first organic compound and the second organic compound can form an exciplex.

To provide a light-emitting element with high emission efficiency and low driving voltage. The light-emitting element includes a guest material and a host material. A HOMO level of the guest material is higher than a HOMO level of the host material. An energy difference between the LUMO level and a HOMO level of the guest material is larger than an energy difference between the LUMO level and a HOMO level of the host material. The guest material has a function of converting triplet excitation energy into light emission. An energy difference between the LUMO level of the host material and the HOMO level of the guest material is larger than or equal to energy of light emission of the guest material.

To provide a light-emitting element with high emission efficiency and low driving voltage. The light-emitting element includes a guest material and a host material. A LUMO level of the guest material is lower than a LUMO level of the host material. An energy difference between the LUMO level and a HOMO level of the guest material is larger than an energy difference between the LUMO level and a HOMO level of the host material. The guest material has a function of converting triplet excitation energy into light emission. An energy difference between the LUMO level of the guest material and the HOMO level of the host material is larger than or equal to energy of light emission of the guest material.

This invention provides methods, devices and device components for sensing, imaging and characterizing changes in the composition of a probe region. More particularly, the present invention provides methods and devices for detecting changes in the refractive index of a probe region positioned adjacent to a sensing surface, preferably a sensing surface comprising a thin conducting film supporting surface plasmon formation. In addition, the present invention provides methods and device for generating surface plasmons in a probe region and characterizing the composition of the probe region by generating one or more surface plasmon resonances curves and / or surface plasmon resonance images of the probe region.

A compact plasma generating apparatus providing high efficiency of plasma excitation is presented. A plasma generating apparatus (100) comprises a microwave generating apparatus (10) for generating microwaves, a coaxial waveguide (20) having a coaxial structure comprising an inner tube (20a) and an outer tube (20b), a monopole antenna (21) being attached to one end of said inner tube (20a), for directing the microwaves generated by said microwave generating apparatus (10) to the monopole antenna (21), a resonator (22) composed of dielectric material for holding the monopole antenna (21), and a chamber (23) in which a specific process gas is fed for plasma excitation. The chamber (23) has an open surface and the resonator (22) is placed on this open surface, and the process gas is excited by the microwaves radiated from the monopole antenna (21) through the resonator (22) into the interior of the chamber (23) to generate plasma.

A thin-film magnetic head that has a configuration in which the element-formed surface and the opposed-to-medium surface are perpendicular to each other, and a light source is sufficiently distanced from the medium surface is provided. The head comprises at least one near-field-light-generating layer for heating a part of a magnetic medium during write operation by generating a near-field light, having a shape tapered toward a head end surface on the opposed-to-medium surface side, and comprising a near-field-light-generating portion having a light-received surface and a tip reaching the head end surface on the opposed-to-medium surface side, and the light-received surface being sloped in respect to the element-formed surface and being provided in a position where an incident light propagating from a head end surface opposite to the opposed-to-medium surface can reach at least a part of the light-received surface.

A thin-film magnetic head that has a configuration in which the element-formed surface and the opposed-to-medium surface are perpendicular to each other, and a light source is sufficiently distanced from the medium surface is provided. The head comprises at least one near-field-light-generating layer for heating a part of a magnetic medium during write operation by generating a near-field light, having a shape tapered toward a head end surface on the opposed-to-medium surface side, and comprising a near-field-light-generating portion having a light-received surface and a tip reaching the head end surface on the opposed-to-medium surface side, and the light-received surface being sloped in respect to the element-formed surface and being provided in a position where an incident light propagating from a head end surface opposite to the opposed-to-medium surface can reach at least a part of the light-received surface.

To provide a green phosphor with high conversion efficiency of blue of near-ultraviolet light and excellent color purity, a multinary oxynitride phosphor represented by the general formula [I] is proposed.M1xBayM2zLuOvNw  [I]In the formula [I], M1 represents Cr, Mn, Fe, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm and Yb, M2 represents Sr, Ca, Mg and Zn, L represents metal elements belonging to the fourth group or the fourteenth group of the periodic table, and x, y, z, u, v and w are the numeric values in the following ranges:0.00001≦x≦30≦y≦2.999992.6≦x+y+z≦30<u≦116<v≦250<w≦17.

A method and apparatus for exciting gas that involves generating an alternating magnetic field unidirectionally through a magnetic core defining a gap, across the gap and through a plasma vessel that includes dielectric material. The magnetic field induces an electric field in the plasma vessel that generates the plasma.

Two, three dimensional color displays having uniform dispersion of red, green and blue visible light emitting micron particles. Pumping at approximately 976 nm can generate green and red colors having an approximately 4% limit efficiency. One source can generate three colors with approximately limit efficiency. Modulators, scanners and lens can move and focus laser beams to different pixels forming two dimensional color images. Displays can be formed from near infrared source beams that are simultaneously split and modulated with micro electro mechanical systems, spatial light modulators, liquid crystal displays, digital micromirrors, digital light projectors, grating light valves, liquid crystal silicon devices, polysilicon LCDs, electron beam written SLMs, and electrically switchable bragg gratings. Pixels containing: Yb,Tm:YLF can emit blue light, Yb,Er(NYF) can emit green light, and Yb,Er:KYF and Yb,Ef:YF3 can emit red light.

This invention relates to a system and method for reducing the primary vortex wake structure generated by a lifting body mounted on an object moving through a fluid. This is achieved by first, altering the generated initial vortex wake to make it vulnerable to rapid breakup; and, second, producing disturbances to this wake with secondary vortices from auxiliary lifting surfaces, called vortex leveraging tabs, to instigate this breakup. This invention relates to various fields of uses to include vortices generated by any type of lifting body moving through a fluid to include aircraft and watercraft, such as surface vessels and submarines.

Apparatus including an ion trap, a controller connected to the ion trap, wherein the controller includes a memory containing computer readable instructions which, when executed, cause the controller to send control signals to the ion trap so that the ion trap produce and maintain a trapping field in the ion trap, a waveform generator to change the trapping field so that ions of a predetermined mass in the trapping chamber are selectively moved; a secondary waveform generator to change the orbits of the ions; an energy source to excite ions to emit photons, an optical detector to detect the emitted photons, and a processor which can apply fast-Fourier transform analysis of the time-domain signal of the detected emitted photons to generate a frequency or mass spectrum related to mass-to-charge ratio of the ions.

To provide a green phosphor with high conversion efficiency of blue of near-ultraviolet light and excellent color purity, a multinary oxynitride phosphor represented by the general formula [I] is proposed. <?in-line-formulae description="In-line Formulae" end="lead"?>M1xBayM2zLuOvNw [I]<?in-line-formulae description="In-line Formulae" end="tail"?> In the formula [I], M1 represents Cr, Mn, Fe, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm and Yb, M2 represents Sr, Ca, Mg and Zn, L represents metal elements belonging to the fourth group or the fourteenth group of the periodic table, and x, y, z, u, v and w are the numeric values in the following ranges: <?in-line-formulae description="In-line Formulae" end="lead"?>0.00001<=x<=3<?in-line-formulae description="In-line Formulae" end="tail"?> <?in-line-formulae description="In-line Formulae" end="lead"?>0<=y<=2.99999<?in-line-formulae description="In-line Formulae" end="tail"?> <?in-line-formulae description="In-line Formulae" end="lead"?>2.6<=x+y+z<=3<?in-line-formulae description="In-line Formulae" end="tail"?> <?in-line-formulae description="In-line Formulae" end="lead"?>0<u<=11<?in-line-formulae description="In-line Formulae" end="tail"?> <?in-line-formulae description="In-line Formulae" end="lead"?>6<v<=25<?in-line-formulae description="In-line Formulae" end="tail"?> <?in-line-formulae description="In-line Formulae" end="lead"?>0<w<=17.<?in-line-formulae description="In-line Formulae" end="tail"?>

UV-blue excitable luminescent material consisting of a Eu-doped oxynitride host lattice with general composition MaI2-xSixO4-xNx, wherein M is at least one of an alkaline earth metal chosen from the group Ca, Sr, Ba.

A density and viscosity sensor 1 for measuring density and viscosity of fluid F, the sensor 1 comprising:a resonating element 3, 3A, 3B, 3C, 3D, 3E, 3F, 3G arranged to be immersed in the fluid F,an actuating / detecting element 4, 4A, 4B coupled to the resonating element,a connector 7 for coupling to the actuating / detecting element 4, 4A, 4B,a housing 2 defining a chamber 8A isolated from the fluid F, the housing 2 comprising an area of reduced thickness defining a membrane 9 separating the chamber 8A from the fluid F, the membrane 9 having a thickness enabling transfer of mechanical vibration between the actuating / detecting element 4, 4A, 4B and the resonating element 3, 3A, 3B, 3C, 3D, 3E, 3F, 3G,the actuating / detecting element 4, 4A, 4B is positioned within the chamber so as to be isolated from the fluid F and mechanically coupled to the membrane 9, the resonating element 3, 3A, 3B, 3C, 3D, 3E, 3F, 3G arranged to be immersed in the fluid F is mechanically coupled to the membrane 9, wherein the resonating element 3, 3A, 3B, 3C, 3D, 3E, 3F, 3G has a shape defining a first resonance mode and a second resonance mode characterized by different resonant frequencies F1, F2 and different quality factors Q1, Q2, the first resonance mode moving a volume of fluid, the second mode shearing a surrounding fluid.

To provide a green phosphor with high conversion efficiency of blue of near-ultraviolet light and excellent color purity, a multinary oxynitride phosphor represented by the general formula [I] is proposed.M1xBayM2zLuOvNw  [I]In the formula [I], M1 represents Cr, Mn, Fe, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm and Yb, M2 represents Sr, Ca, Mg and Zn, L represents metal elements belonging to the fourth group or the fourteenth group of the periodic table, and x, y, z, u, v and w are the numeric values in the following ranges:0.00001≦x≦30≦y≦2.999992.6≦x+y+z≦30<u≦116<v≦250<w≦17.

Various light emitting diode (LED) based measurement systems and methods are provided. One system includes one or more arrays of LEDs arranged along a flow path of a sample. The array(s) are configured to illuminate the sample as the sample moves along the flow path. The system also includes one or more detectors configured to detect light resulting from illumination of the sample by the array(s). One method includes illuminating a microsphere at different positions along a flow path of the microsphere. The method also includes detecting light resulting from the illumination to produce individual output signals corresponding to the illumination at the different positions. The method further includes combining the individual output signals to produce a single output signal having a signal-to-noise ratio that is greater than a signal-to-noise ratio of the individual output signals.

UV-blue excitable green luminescent material including an Eu-doped oxynitride host lattice with general composition MSi2O2N2, wherein M is at least one of an alkaline earth metal chosen from the group Ca, Sr, Ba.

A display device (1) comprises a transparent panel acoustic transducer (6). The transparent front panel (6) has a laminate comprising an outer transparent thin panel (6b) and a supporting panel (6a). The supporting panel (6a) has a considerably larger stiffness than the transparent thin panel (6b), and the transparent thin panel (6b) comprises, at at least one side of the supporting panel, a side area (7) extending beyond the supporting panel (6a), said extending side area (7) being provided with an exciter (8) or a receiver at a side facing the display screen (2).

[Problems]To provide a surface acoustic wave excitation device for efficiently exciting the surface acoustic wave on the surface of a material such as glass having free size and shape for making mechanical vibration available.[Means to Solve the Problems]The surface acoustic wave excitation device according to the present invention comprises a non-piezoelectric member 30 such as glass, a piezoelectric member 20, interdigital transducers 11 interposed between the non-piezoelectric member 30 and the piezoelectric member 20, and pre-pressurizing means 42 for pressing the piezoelectric member 20 onto the non-piezoelectric member 30 by way of the interdigital transducers. Alternating voltage is applied to the interdigital transducers 11 for exciting the surface acoustic wave on the non-piezoelectric member 30. Standing waves are generated in the piezoelectric member 20 by applying alternating voltage to the interdigital transducers 11, thereby allowing alternating strains to propagate to the non-piezoelectric member 30 such as a glass substrate or the like by way of the electrodes 11 and exciting the surface acoustic wave for making mechanical vibration of the non-piezoelectric member 30 available.

We describe a method for detection of the presence of an invertebrate or an invertebrate component in a sample of substantially non invertebrate material, comprising impinging said sample with a source of electromagnetic radiation at a wavelength of at least 600 nm and detecting Raman scattering / fluorescence of said invertebrate or a component of said invertebrate at a wavenumber where the non-invertebrate components of said sample either do not fluoresce or fluoresce with sufficiently low intensity wherein the non invertebrate material is edible and / or living.

According to one embodiment of the invention, a method for biomedical imaging includes directing time-varying excitation light at a surface area of a light scattering material, the material comprising a fluorescent target. Time-varying emission light from the fluorescent target is detected, substantially at a two-dimensional sensor surface, in response to the time-varying excitation light stimulating the fluorescent target. The time-varying emission light is filtered to reject excitation light re-emitted from the material. A three-dimensional image of the fluorescent target is generated based on the detection substantially at the sensor surface.

To be able to achieve further small-sized formation and light-weighted formation and to promote a sensitivity by further efficiently detecting a fluorescent X-ray or the like in an X-ray tube and an X-ray analyzing apparatus, there are provided a vacuum cabinet 2 inside of which is brought into a vacuum state and which includes a window portion 1 formed by an X-ray transmitting film through which an X-ray can be transmitted, an electron beam source 3 installed at inside of the vacuum cabinet 2 for emitting an electron beam e, a target T generating a primary X-ray X1 by being irradiated with the electron beam e and installed at inside of the vacuum cabinet 2 to be able to emit the primary X-ray X1 to an outside sample S by way of the window portion 1, and an X-ray detecting element 4 arranged at inside of the vacuum cabinet 2 to be able to detect a fluorescent X-ray and a scattered X-ray X2 emitted from the sample S and incident from the window portion 1 for outputting a signal including energy information of the fluorescent X-ray and the scattered X-ray X2.

An x-ray diffraction apparatus for measuring crystal orientation of a multiple grain sample. An x-ray excitation path is provided having a focusing optic for collecting x-rays from an x-ray source and redirecting the collected x-rays into an x-ray beam converging on a single grain of the multiple grain sample. At least one point detector and the sample are rotated relative to each other; and a grain orientation is obtained based upon diffraction patterns collected from first and second grain crystal planes within the apparatus.

Methods and apparatus in the field of single molecule sensing are described, e.g. for molecular analysis of analytes such as molecular analytes, e.g. nucleic acids, proteins, polypeptides, peptides, lipids and polysaccharides. Molecular spectroscopy on a molecule translocating through a solid-state nanopore is described. Optical spectroscopic signals are enhanced by plasmonic field-confinement and antenna effects and probed in transmission by plasmon-enabled transmission of light through an optical channel that overlaps with the physical channel.

Many thousands of micro-LEDs (e.g., 25 microns per side) are deposited on a substrate. Some of the LEDs are formed to emit a peak wavelength of 450 nm (blue), and some are formed to emit a peak wavelength of 490 nm (cyan). A YAG (yellow) phosphor is then deposited on the LEDs, or a remote YAG layer is used. YAG phosphor is most efficiently excited at 450 nm and has a very weak emission at 490 nm. The two types of LEDs are GaN based and can be driven at the same current. The ratio of the two types of LEDs is controlled to achieve the desired overall color emission of the LED lamp. The blue LEDs optimally excite the YAG phosphor to produce white light having blue and yellow components, and the cyan LEDs broaden the emission spectrum to increase the CRI of the lamp while improving luminous efficiency. Other embodiments are described.

To provide a light-emitting element with high emission efficiency and low driving voltage. The light-emitting element includes a guest material and a host material. A LUMO level of the host material is higher than a LUMO level of the host material, and a HOMO level of the guest material is lower than a HOMO level of the host material. The guest material has a function of converting triplet excitation energy into light emission. The difference between a singlet excitation energy level and a triplet excitation energy level of the host material is greater than 0 eV and less than or equal to 0.2 eV. The energy difference between the LUMO level and the HOMO level of the host material is larger than or equal to light emission energy of the guest material.