Abstract:
A method of transferring a flexible layer to a substrate makes use of a partial bulge in the flexible layer, which does not make contact with the substrate. The partial bulge advances to the location of an alignment marker on the substrate. When alignment adjustments are needed, they are made with the partial bulge in place so that more reproducible positioning is possible when fully advancing the flexible layer against the substrate.
Abstract:
There is provided an illumination device comprising: a wavelength converting layer comprising a photon emitting donor configured to absorb energy to reach an excited state, and a photon emitting acceptor; an energy source configured to provide energy to the donor such that the donor reach the excited state; wherein the donor and the acceptor are selected and arranged at a distance from each other such that non-radiative transfer of excitation energy from the donor to the acceptor occur, and wherein the acceptor is configured to emit a photon at a second wavelength after the transfer of energy; the illumination device further comprising a periodic plasmonic antenna array, arranged on the substrate and embedded within the wavelength converting layer, and comprising a plurality of individual antenna elements arranged in an antenna array plane, the plasmonic antenna array being configured to support a first lattice resonance at the second wavelength, arising from coupling of localized surface plasmon resonances in the individual antenna elements to photonic modes supported by the system comprising the plasmonic antenna array and the wavelength converting layer, wherein the plasmonic antenna array is configured to comprise plasmon resonance modes such that light emitted from the plasmonic antenna array has an anisotropic angle distribution.
Abstract:
An imprinting apparatus comprise a first carrier for carrying a flexible stamp and a second carrier movable relative to the first carrier and configured to carry a substrate having a resist layer. A stamp loader is movable between a position in and out of a space between the first and second carriers. The second carrier is movable towards the first carrier to move the stamp carrier and a held stamp towards the first carrier, so as to enable the held stamp to be transferred to the first carrier and held by suction channels of the first carrier. It can then be moved away from the first carrier thereby to return the empty stamp carrier to the frame.
Abstract:
The present invention relates to a light emitting device (100) comprising: a substrate (102); a light emitting diode structure (106) arranged on the substrate (102), the diode structure (106) comprising a first semiconducting layer (108), an active region (110) and a second semiconducting layer (112), wherein a light output surface of the diode structure comprises a plurality of protruding surface structures (104) each having a peak height, a sidewall slope (122) and orientation in relation to the substrate, the plurality of protruding structures (104) comprising a first set and a second set of protruding surface structures, the first set and second set of protruding surface structures differing by at least one of the peak height, sidewall slope and orientation in relation to the substrate. The invention also relates to a method for manufacturing a light emitting device where the protruding surface structures are formed by imprint lithography to form a three-dimensional pattern and subsequent etching.
Abstract:
An imprinting apparatus comprises a first carrier for carrying a flexible stamp and a second carrier movable relative to the first carrier and configured to carry a substrate having a resist layer. The second carrier comprises a chuck which comprises a hollow cylindrical body having atop face and a bottom face and a lattice arrangement between the top and bottom faces. The chuck has a reduced thermal mass while maintaining the required stiffness for maintaining a uniform imprint gap.
Abstract:
There is provided an illumination device (100) comprising: a substrate (104); an optically transmissive first layer (106) arranged on the substrate; a photon emitting layer (108), arranged on the optically transmissive first layer and comprising a photon emitting material configured to receive energy from an energy source and to emit light having a predetermined wavelength; a periodic plasmonic antenna array, arranged on the substrate and embedded within the first layer, and comprising a plurality of individual antenna elements (114) arranged in an antenna array plane, the plasmonic antenna array being configured to support a first lattice resonance at the predetermined wavelength, arising from coupling of localized surface plasmon resonances in the individual antenna elements to photonic modes supported by the system comprising the plasmonic antenna array and the photon emitting layer, wherein the plasmonic antenna array is configured to comprise plasmon resonance modes such that light emitted from the plasmonic antenna array has an anisotropic angle distribution; and wherein the photon emitting layer is arranged at a distance from the antenna array plane corresponding to a location of maximum field enhancement for light out-coupling resulting from the plasmonic-photonic lattice resonances.
Abstract:
According to a first aspect of the invention, there is provided an illumination device (100) comprising: a light source (102) configured to emit light of a first wavelength; a wavelength converting layer (104) comprising a wavelength converting material configured to receive light from the light source, and further configured to convert light from the first wavelength to a second wavelength; a periodic plasmonic antenna array, arranged embedded within the wavelength converting layer, and comprising a plurality of individual antenna elements (108) arranged in an antenna array plane, the plasmonic antenna array being configured to support a first mode of surface lattice resonances at the second wavelength, arising from diffractive coupling of localized surface plasmon resonances in the individual antenna elements, wherein the plasmonic antenna array is configured to comprise plasmon resonance modes such that light emitted from the plasmonic antenna array has an anisotropic angle distribution; and wherein the light source is further arranged to emit light in the form of a plane wave (103) having an angle of incidence in relation to the antenna array plane such that an electric field intensity in the antenna elements, resulting from the said plasmonic-photonic lattice resonances, is minimized.
Abstract:
A method of manufacturing a patterned stamp (100) for patterning a contoured surface (10) is disclosed. The method comprises providing a pliable stamp layer (120) carrying a pattern of features (122), forcing the pliable stamp layer onto the contoured surface with said pattern of features facing the contoured surface; applying a fluid support layer (130) over the pliable stamp layer on the contoured surface; solidifying the support layer (140) to form the patterned stamp; and removing the patterned stamp from the contoured surface. A corresponding patterned stamp, imprinting method and imprinted article are also disclosed.
Abstract:
An imprinting apparatus comprises a first carrier for carrying a flexible stamp, a set of carrier actuators for translating the first carrier in a direction parallel to a plane of the first carrier, and a second carrier movable relative to the first carrier and configured to carry a substrate having a resist layer. The second carrier comprises a chuck and a set of chuck actuators for translating a portion of the chuck in a direction perpendicular to a plane of the second carrier. This imprinting apparatus provides alignment between the flexible stamp and the substrate by controlling an in-plane position of the first carrier (so enabling X, Y and Rz position control) and controlling Z axis positions of the second carrier (so enabling Rx, Ry and Z position control). Thus, 6DOF position adjustment is enabled with a simple structure. Thus precise control of X,Y and Z translations and rotations is enabled while also enabling loading of substrates and/or stamps.
Abstract:
A method of manufacturing a patterned stamp (100) for patterning a contoured surface (10) is disclosed. The method comprises applying a layer (115) of a pliable material precursor over a master (50) carrying an inverse pattern (52) to form a desired pattern (112) in said layer; curing the pliable material precursor to form a pliable stamp layer (120) comprising said desired pattern; providing an intermediate stamp structure by adhering a porous pliable support layer (130) to the pliable stamp layer; releasing the intermediate stamp structure from the master; forcing the intermediate stamp structure onto the contoured surface with said pattern of features facing the contoured surface; forming the patterned stamp by filling the porous pliable support layer with a filler material to reduce the pliability of the support layer; and removing the patterned stamp from the contoured surface. A corresponding patterned stamp, imprinting method and imprinted article are also disclosed.