摘要:
A display system comprises a waveguide having light incoupling or light outcoupling optical elements formed of a metasurface. The metasurface is a multilevel (e.g., bi-level) structure having a first level defined by spaced apart protrusions formed of a first optically transmissive material and a second optically transmissive material between the protrusions. The metasurface also includes a second level formed by the second optically transmissive material. The protrusions on the first level may be patterned by nanoimprinting the first optically transmissive material, and the second optically transmissive material may be deposited over and between the patterned protrusions. The widths of the protrusions and the spacing between the protrusions may be selected to diffract light, and a pitch of the protrusions may be 10-600 nm.
摘要:
The invention provides a lighting device comprising (a) a light converter comprising a light receiving face; and (b) a solid state light source configured to generate a light source light with a photon flux of at least 10 W/cm2 at the light receiving face, wherein the light converter is configured to convert at least part of the light source light into light converter light having a first frequency, wherein the light converter comprises a semiconductor quantum dot in an optical structure selected from a photonic crystal structure and a plasmonic structure, wherein the optical structure is configured to increase the photon density of states in the light converter resonant with the first frequency for reducing saturation quenching, and wherein the quantum dot has a quantum efficiency of at least 80%.
摘要翻译:本发明提供一种照明装置(1),包括:(a)包括光接收面(110)的光转换器(100); 和(b)固态光源(10),其被配置为在所述光接收面(110)处产生具有至少10W / cm 2的光子通量的光源光(11),其中所述光转换器 被配置为将至少一部分光源光(11)转换成具有第一频率的光转换器光(101),其中所述光转换器(100)包括在光学结构(30)中选择的半导体量子点(20) 光子晶体结构(31)和等离子体激元结构(32),其中所述光学结构(30)被配置为增加所述光转换器(100)中与所述第一频率谐振的状态的光子密度以减少饱和猝灭,并且其中 量子点(20)具有至少80%的量子效率。
摘要:
An electric-field enhancement element (100) includes a propagating surface plasmon generating unit (10); a localized surface plasmon generating unit (30) that is formed on an upper portion of a surface of a substrate and includes a plurality of fine metal structure bodies (32); and a metal layer (20) that is formed on an upper portion of the substrate surface and propagates a propagating surface plasmon generated by the propagating surface plasmon generating unit to the localized surface plasmon generating unit in a direction along the substrate surface, in which the fine metal structure body includes a plurality of fine metal structures (34) which are arranged to be separated from each other in a normal direction of the substrate surface.
摘要:
An apparatus for investigating a molecule comprises: • a substrate; • first and second chambers arranged either side of the substrate; • at least one nanopore in said substrate linking the first and second chambers; • at least one pair of nanostructures, located on the substrate, capable of generating an electromagnetic field when caused to undergo localised surface plasmon resonance; • a source of incident electromagnetic radiation for inducing localised surface plasmon resonance in the nanostructures: • a controller for causing the molecule to pass from the first to the second chambers via the inlet(s) and outlet(s) and through the electromagnetic field and • a detector for detecting Raman-scattered radiation produced by the molecules as they pass through the electromagnetic field. It is characterised in that the nanostructures are juxtaposed opposite each other around the nanopore and have morphology in a plane parallel to that of the substrate comprising sectors of a circle having a from 30 to 150 degree central angle. The apparatus is especially suitable for investigating biomolecules; in particular for sequencing the amino acids of a protein or the nucleotides of a nucleic acid such as naturally occurring or synthetic RNA or DNA.
摘要:
The present invention relates to a plasmonic structure (10) comprising a substrate and an electro conductor (12) provided in or on the substrate (11). The electro conductor (12) comprises a first part (13) configured to provide a first series of plasmon resonance modes (for incident radiation of a first wavelength) and a second part (14) configured to provide a second series of plasmon resonance modes (for incident radiation of a second wavelength). The first and second part are functionally connected in a linkage region (15), where the electro conductor (12) is shaped such as to form a capacitive gap (16). The electro conductor (12) is furthermore configured to direct radiation incident on the plasmonic structure of a first wavelength predominantly toward a first direction and to direct radiation incident on the plasmonic structure of a second wavelength predominantly toward a second direction, in which the first direction and the second direction are separated by an angle of at least 60°.
摘要:
A method 30 of manufacturing a layered material stack 10 that includes a plasmonic interface between a plasmonic material 12 and optical waveguide material 18 is disclosed. The method includes providing 32 a substrate layer 14, disposing a layer of plasmonic material 12 on the substrate layer 14, depositing 36 a metal constituent of an optical waveguide material 22 directly onto the layer of plasmonic material 12, and anodizing 38 the metal constituent of the optical waveguide material 22 to form an optically transparent oxide of the metal constituent configured to couple light into the layer of plasmonic material 12, with the optically transparent oxide of the metal constituent forming an optical waveguide structure 18.
摘要:
An apparatus with a radiation source 100 which has means for irradiation 610 of electromagnetic radiation with a plurality of wavelengths onto a sensor surface 210 which can support a surface plasmon, and said radiation is reflected onto at least one photosensitive detector 300, and create reflectance values, characterized by that said wavelengths at said detector are separated by wavelength, forming a wavelength ensemble, in such way that a continuous response signal can be calculated using at least three of said wavelength reflectance values, finding the wavelength closest to the resonance condition and use of adjacent wavelengths to calculate said continuous response signal 510 being a function of an effective refractive index at said sensor surface 210, where, if the resonance wavelength is the first or last of said wavelengths, at least two adjacent wavelengths closest to said closest wavelength to said resonance condition are used to calculate said continuous response signal. The present invention also relates to a method.
摘要:
A system for measuring analytical reactions comprising a socket (51, 57) which is suitable for holding an optode array chip (40).The socket comprises electrical contacts that mate with electrical contacts on a chip when such a chip is inserted into the socket. The socket furthermore permits fluid from a fluidics system (33) and illumination from an illumination system (53) to be for delivered to a chip when such a chip is inserted into the socket. The socket may be of the clam shell type.