85 results about "Nanoimprint lithography" patented technology

The invention discloses an azobenzene polymer material and an application of the azobenzene polymer material in nanoimprint lithography. The azobenzene polymer is prepared by adopting a one-step simple ring-opening metathesis polymerization method, is endowed with excellent thermal stability and light stability, and can keep excellent performance under the conditions of high temperature and sunlight irradiation. Compared with the traditional nanoimprint photoresist, the nanoimprint photoresist provided by the invention has higher stability and precision in the nanoimprint process, can effectively reduce the problems of distortion, blurring and the like of an imprint pattern, and ensures the accuracy of nanostructure transfer printing. The finished product quality and the production efficiency are improved, and meanwhile, the uncertainty and the cost in the manufacturing process are reduced.

Embodiments of the present disclosure provide methods for forming optical device structures. An exemplary method generally includes disposing a first material device layer on a substrate; patterning a portion of the first material device layer to form a first plurality of device structures in the first material device layer; disposing a second material device layer on an unpatterned portion of the first device material layer; performing a nanoimprint lithography process on the second material device layer to form a second plurality of device structures on the first material device layer; and disposing a metal coating on the second plurality of device structures.

A surface-enhanced Raman scattering substrate, including: a base layer; a nanopillar structure layer, which is formed on the base layer by means of nanoimprint lithography, and has a nanopillar array structure; and a thin film, which covers and is formed, by means of an oblique deposition evaporation process, on the top of the nanopillar array structure and at least one vertical side wall of the nanopillar array structure, wherein the thin film has a surface-enhanced Raman scattering effect and has an oblique angle.

Undesirable light leakage is reduced in a mixed-reality head-mounted display device using an out-coupling diffractive optical element in a waveguide combiner that is implemented using a surface relief grating (SRG) having a gradient refractive index. The SRG has gratings with modulated depth in which shallower gratings have a lower refractive index and deeper gratings have a higher refractive index. The lower efficiency of the shallower gratings reduces forward-propagating virtual image light leaking into the real-world environment of the HMD device while simultaneously enabling light to propagate to the deeper gratings to thereby improve virtual image uniformity over the entirety of eyebox of the combiner. The SRG with gradient refractive index is alternatively fabricated using an inkjet deposition process with resin inks having different refractive indexes and subsequent nanoimprint lithography grating imprinting or physical vapor deposition by which a thickness-modulated resin layer is applied to a constant-height grating structure.

An example of a resin composition includes an epoxy resin matrix and functionalized silica nanoparticles incorporated into the epoxy resin matrix. The functionalized silica nanoparticles have an average particle size up to about 10 nm. The resin composition is imprintable using nanoimprint lithography. The resin composition may be used to manufacture a patterned substrate for a flow cell.

A method is for producing a master template with variable height features for imprint lithography on a device substrate includes providing a layer stack comprising a substrate, an etch stop layer on the substrate, and a pattern layer on the etch stop layer. The method involves creating height gradation in the pattern layer to obtain a height graded pattern layer, forming the master template by providing a pattern comprising a plurality of features into the height graded pattern layer. This method enables the production of features with varying heights, which can be particularly useful in applications such as optical devices where such features may influence the functionality and efficiency of the device.

The invention discloses a graphene transfer method based on nanoimprint. The method comprises the following steps: obtaining a photoresist layer / micro-nano structure layer / organic layer composite structure; covering the graphene layer with the photoresist / micro-nano structure layer / organic layer composite structure, and performing nano-imprinting; stripping the metal substrate to obtain an organic layer / micro-nano structure layer / photoresist layer / graphene layer composite structure; the surface of the substrate is covered with the organic layer / micro-nano structure layer / photoresist layer / graphene layer composite structure, so that the graphene layer is attached to the substrate, nano-imprinting is carried out, and the photoresist layer is cured in the nano-imprinting process; and stripping the organic layer / micro-nano structure layer / photoresist layer composite structure to obtain the graphene layer transferred to the substrate. The contact area between the micro-nano structure layer and the photoresist layer is increased through the micro-nano structure layer, the binding force between the organic layer and the photoresist layer is further increased, large-area graphene layer transfer is achieved based on nanoimprint, and the transfer quality is guaranteed.

The invention relates to a method of manufacturing a nanoimprint lithography replica, a mold thereof, and a semiconductor device. A method of manufacturing a nanoimprint lithography replica includes depositing a first resist layer over a substrate and selectively exposing the first resist layer to a first actinic radiation. The selectively exposed first resist layer is developed to form a pattern in the first resist layer. The pattern in the first resist layer extends into the substrate to form a mold in the substrate. The first resist layer is removed from the substrate. A second resist layer is deposited over the replica blank. The second resist layer is in contact with the mold. The second resist layer is exposed to a second actinic radiation. The mold and the exposed second resist layer are separated. A pattern is formed in the exposed second resist layer. The pattern in the second resist layer is extended into the replica blank, and the second resist layer is removed from the replica blank to form a replica.

This disclosure generally describes methods and systems for fabricating high-quality surface relief waveguides for an eyepiece. In particular, this disclosure uses nanoimprint lithography imprinting techniques that reduce or eliminate the presence of gaps within the imprinted features by using a droplet pattern optimized for dispensing photoresist to achieve various optical effects, such as manufacturing waveguides having surface relief features such as diffraction gratings. Further, this disclosure also describes techniques for manufacturing surface relief waveguides having a gradient, such as a substantially continuous gradient or slope, between zones having different residual layer thicknesses of the dispensed photoresist and / or between zones having surface features of different heights (or depths).

A micro- or nanotextured or structured surface and methods of making and using the same are provided. A structured or textured surface can comprise a substrate and a textured surface comprising a plurality of features and configured to reduce surface adhesion of a particulate to the structured surface. The micro- or nanotextured surface can be replicated using highly scalable processes, such as roll-to-roll nanoimprint lithography and roll-to-roll thermal embossing onto the substrate by a master mold, which can be created by ultrasonic nanocoining.

A system and method for controlling the position of a movable stage supporting a substrate are provided. First position information representing the position of the substrate relative to a mark on an object is obtained from a sensor. Alignment prediction information is generated based on the obtained first position, wherein the generated alignment prediction information includes at least one parameter value. First trajectory information including the at least one parameter value is generated based on the obtained first position information and the generated alignment prediction information. Second trajectory information is generated based on the generated alignment prediction information, the first trajectory information, and the second position information, wherein the second position information represents the position of the movable stage. An output control signal is generated based on the second trajectory information, and the output control signal is used to control the movable stage to approach a target position based on the generated output signal.

This application discloses the formation of vias using imprint lithography and the formation of repositioning vias by imprint lithography. A resist layer is formed on top of a dielectric layer. For example, a pattern of via openings is imprinted in the resist layer using nanoimprint lithography. After imprinting, the pattern of via openings imprinted in the resist layer is transferred to the dielectric layer by anisotropic etching to form via openings in the dielectric layer. Anisotropic etching has low etch selectivity between the resist layer and the dielectric layer. The via openings in the dielectric layer are filled with a conductive material to form vias in the dielectric layer. The centerline of at least one repositioning via is not parallel to the centerline of at least one other via.

This invention relates to the field of lithography technology, specifically to a hybrid series-parallel six-degree-of-freedom mechanism for nanoimprint lithography. It employs a top-down hybrid configuration: the upper part is a high-rigidity ZRxRy parallel micro-motion mechanism, providing linear motion in the vertical direction (Z) and rotational motion around the horizontal axis (Rx, Ry), exhibiting high rigidity, high precision, and high dynamic response; the lower part is a large-stroke XYRz series macro-motion mechanism, providing large-stroke linear motion in the X and Y directions within a plane and rotational motion around the vertical axis (Rz). The substrate support assembly is mounted on top of the parallel mechanism via a three-point connection surface integration. This invention combines the advantages of a large workspace of a series mechanism and the high precision and high rigidity of a parallel mechanism, providing an ideal precision motion solution for nanoimprint lithography equipment.

Optical devices and methods include a first waveguide having a first surface and a second waveguide including a second surface. The first waveguide is at a fixed position relative to the second waveguide with the first surface at least partly facing the second surface, and the first surface includes a first positioning element. The first positioning element is a NanoImprint Lithography (NIL) structure. The optical device further includes an adhesive arranged for attaching the first surface to the second surface, where the first positioning element is arranged to control a position of the adhesive. The first positioning element includes a philic region adapted to attract the adhesive, or a phobic region adapted to repel the adhesive.

The invention discloses a preparation method of a near-infrared achromatic super lens based on a nanoimprint technology, and relates to the technical field of micro-nano manufacturing. The preparation method comprises the following steps: 1, designing a target super lens by using finite element simulation software based on a time domain finite difference method, a particle swarm algorithm and a scalar diffraction algorithm; 2, preparing a silicon female die corresponding to the super lens according to the designed target super lens parameters by using electron beam lithography and deep reactive ion etching; 3, carrying out surface fluorination treatment on the silicon female die; and 4, preparing a corresponding sub-mold according to the silicon female mold, carrying out imprinting by using a nano imprinting technology and the sub-mold, and finally, etching the a-Si layer on the surface of the substrate through deep reactive ion etching by taking imprinting glue as an etching mask to obtain the super lens. According to the invention, the nanoimprint technology can be used for manufacturing the near-infrared achromatic superlens, so that the near-infrared achromatic superlens gets rid of dependence on a high-precision photoetching machine.

The present invention relates to configuring an optical layer in a nanoimprint lithography process. The nanoimprint lithography method of configuring an optical layer includes imprinting first features having dimensions of a first order of magnitude on one side of a substrate using a patterned template, and simultaneously imprinting second features having dimensions of a second order of magnitude on the side of the substrate using the patterned template, the second feature dimensions being determined and arranged to define a gap between the substrate and an adjacent surface.

Embodiments described herein provide for methods of forming optical device structures. The methods relate to forming staircase or blazed angle grating structures using nanoimprint lithography (NIL) in combination with other forming techniques. In certain embodiment, the methods provide for forming staircase or blazed angle grating structures for optical devices without the need for multiple repeated lithographic patterning and etch processes.

The invention discloses an anti-dazzle semitransparent organic photovoltaic glass window based on thermal nanoimprint lithography and a preparation method of the anti-dazzle semitransparent organic photovoltaic glass window, and belongs to the technical field of photovoltaic building integration. A submicron grating structure is prepared on the surface of a ternary blending active layer through a thermal nanoimprint process, and a device structure with a metasurface light field regulation effect is formed after spin coating of an electron transport layer and evaporation of a metal top electrode. By introducing a grating structure and utilizing diffraction and scattering effects, energy of reflected light is redistributed to a non-mirror direction, zero-order mirror reflection is remarkably inhibited, glare is effectively inhibited, light pollution is reduced, and meanwhile, the polarization degree of the reflected light is reduced and the visual comfort is improved by differentially modulating S and P polarized light; for transmission light, the grating excites multi-order diffraction, resulting in angle dispersion of a light beam propagation path, increase of the optical path of light in the active layer, and enhancement of photon capture and absorption, thereby significantly improving the short-circuit current density and power conversion efficiency of the device while ensuring high light transmission.

An example of a resin composition includes an epoxy resin matrix and functionalized silica nanoparticles incorporated into the epoxy resin matrix. The functionalized silica nanoparticles have an average particle size up to about 10 nm. The resin composition is imprintable using nanoimprint lithography. The resin composition may be used to manufacture a patterned substrate for a flow cell.

Method of manufacturing a nanoimprint lithography replica includes depositing a first resist layer over a substrate and selectively exposing the first resist layer to a first actinic radiation. The selectively exposed first resist layer is developed to form a pattern in the first resist layer. The pattern in the first resist layer is extended into the substrate to form a mold in the substrate. The first resist layer is removed from the substrate. A second resist layer deposited over a replica blank. The second resist layer is contacted with the mold. The second resist layer is exposed to a second actinic radiation. The mold and the exposed second resist layer are separated. A pattern is formed in the exposed second resist layer. The pattern in the second resist layer is extended into the replica blank, and the second resist layer is removed from the replica blank to form a replica.

This invention belongs to the field of nanoimprint lithography technology. It provides a dielectric-driven tunable nanoimprint template, its manufacturing method, and a nanoimprinting method. The tunable nanoimprint template integrates a dielectric active driving layer and an electrode layer on one side of a flexible substrate, and a nanostructure layer on the other side. By applying a voltage to the dielectric active driving layer, the Maxwell strain generated by the dielectric effect causes the thickness of the dielectric active driving layer to compress and the area to expand, inducing in-plane stretching, which in turn changes the geometric parameters of the nanostructure in the front nanostructure layer. This nanoimprint template can achieve a large-scale adjustment of the nanostructure geometric parameters with a change rate of 5% to 20%, with an adjustment accuracy of less than 5 nm. It can withstand typical nanoimprinting pressure and is particularly suitable for hot and soft imprinting. Dynamic adjustment significantly reduces the cost of template remanufacturing and improves R&D iteration efficiency.

A process for fabricating a nano-embossed lithography replica comprises depositing a first resist layer over a substrate and selectively irradiating the first resist layer with actinic radiation. The selectively irradiated first resist layer is developed to create a structure within the first resist layer. The structure in the first resist layer is extended into the substrate to create a shape within the substrate. The first resist layer is removed from the substrate. A second resist layer is deposited over a replica blank. The second resist layer is brought into contact with the shape. The second resist layer is irradiated with actinic radiation. The shape and the irradiated second resist layer are separated. A structure is fabricated within the irradiated second resist layer.The structure in the second resist layer is extended into the replica blank, and the second resist layer is removed from the replica blank to produce a replica.

Method for producing a sensor comprising a layer system (100) for the upconversion of near-infrared and / or visible radiation, the method comprising: - forming a, preferably two-dimensional, photonic crystal (110) having a first (111) and a second side (112) by means of nanoimprint lithography; - applying an upconversion material (120) to the first side (111) and / or the second side (112) of the photonic crystal (110), wherein the upconversion material (120) contains a first lanthanide, wherein the first lanthanide is preferably neodymium or ytterbium; and wherein the upconversion material (120) contains a second lanthanide, wherein the second lanthanide is preferably selected from the group consisting of erbium, thulium and holmium.

The invention provides a mask and a preparation method thereof, and relates to the technical field of semiconductors, and the preparation method comprises the following steps: manufacturing a mother set pattern on a first substrate through an electron beam lithography process; the mother set pattern is reversely reprinted on a working mold; the mother set pattern on the working mold is imprinted on a second substrate; and repeatedly coining the mother set pattern on the second substrate, and forming a plurality of preset arranged mother set patterns on the second substrate so as to obtain the mask with the preset pattern. A nano-imprinting photoetching process and an electron beam photoetching process are introduced to be matched for production, only a single mother set pattern is processed in the electron beam photoetching process, photoetching processing of a mask chip array on the front side is completed by the nano-imprinting photoetching process, the area and workload of direct writing of a single electron beam photoetching sheet are reduced, and the production efficiency is improved. The electron beam lithography single-chip process time is greatly reduced, the overall tape-out efficiency is improved, the productivity is optimized, and the cost is greatly reduced.

An optical fiber array includes a groove plate having a plurality of grooves disposed on a top surface thereof; and an optical component plate having a plurality of first optical components disposed on a first surface of the optical component plate and a plurality of second optical components disposed on a second surface of the optical component plate, the second surface being opposite the first surface.

The present invention discloses an azobenzene polymer material and its application in nanoimprint lithography. The present invention utilizes a simple, one-step ring-opening metathesis polymerization method to prepare the azobenzene polymer, endowing it with excellent thermal and photostability, capable of maintaining its superior performance under high-temperature and sunlight conditions. Compared to conventional nanoimprint photoresists, the nanoimprint photoresist of the present invention exhibits higher stability and precision during the nanoimprint process, effectively reducing issues such as imprinted pattern distortion and blurring, and ensuring the accuracy of nanostructure transfer. This improves product quality and production efficiency while reducing uncertainty and costs in the manufacturing process.

To provide densified nanoimprint films and processes for making these densified nanoimprint films, and optical devices.SOLUTION: A densified nanoimprint film 116 contains nanoparticles 108, a base nanoimprint film, and a metal oxide 112 disposed on the base nanoimprint film and in between the nanoparticles. The nanoparticles contain titanium oxide, zirconium oxide, niobium oxide, tantalum oxide, hafnium oxide, chromium oxide, indium tin oxide, silicon nitride, or any combination thereof. The metal oxide contains aluminum oxide, titanium oxide, zirconium oxide, niobium oxide, tantalum oxide, indium oxide, indium tin oxide, hafnium oxide, chromium oxide, scandium oxide, tin oxide, zinc oxide, yttrium oxide, praseodymium oxide, magnesium oxide, silicon oxide, silicon nitride, silicon oxynitride, or any combination thereof.SELECTED DRAWING: Figure 2A-2B

A method of manufacturing a synthetic nanopore device for DNA sequencing disclosed herein includes providing a base template, forming a guiding layer on top of the base template, and forming a photoresist layer on top of the guiding layer. The photoresist layer is patterned, and the guiding layer is etched for form a guiding pattern. The photoresist layer is removed to form a guiding template and a self-assembled monolayer is deposited on at least a portion of the guiding template to form a patterned template. The patterned template is exposed to one or more etch processes to form a nanoimprint lithography template. A membrane is imprinted with the nanoimprint lithography template to form an array of nanopores in the membrane.

VCSEL-based flood illuminators are fabricated to be compact and surface-mounted devices. A substrate is constructed as a panel array having top and bottom electrodes. Individual ones of the VCSEL dies are mounted in electrical communication with pairs of the top electrodes. The VCSEL dies are encased in an encasement disposed on the top surface of the substrate, and a diffuser structure is nano-imprinted adjacent each of the VCSEL dies. The encasement can use a potting resin and a polymer layer. The potting resin encases the VCSEL dies. The polymer layer is softer and is disposed on the potting resin. Nanoimprint lithography forms the diffuser structures in the polymer layer. The panel array is then singulated to form the individual VCSEL-based flood illuminators.

Disclosed techniques enable improved wafer-scale integration data transfer. A plurality of waveguides is fabricated within a photonic wafer-scale interposer (PWSI) using a nanoimprint lithography (NIL) process. A first waveguide comprises a first distance. The first distance is greater than an exposure, on the PWSI, of a single photomask reticle. A plurality of chiplets is bonded to a front side of the PWSI. The plurality of chiplets includes a plurality of photonic communication devices. Light is emitted by a first photonic communication device toward a first optical coupler. The emitting is based on data sent from a first chiplet in the plurality of chiplets. The light that was emitted is coupled, by the first optical coupler, to the first waveguide. Data that was sent by the first chiplet is received by a second chiplet. The receiving is based on light that was coupled to the first waveguide.