Abstract:
A method using an etchant and a laser for localized precise heating enables precise etching and release of MEMS devices with improved process control while expanding the number of materials used to make MEMS, including silicon-dioxide patterned films buried in and subsequently released from bulk silicon, as a direct write method of release of patterned structures that enables removal of only that material needed to allow the device to perform to be precisely released, after which, the bulk material can be further processed for additional electrical or packaging functions.
Abstract:
A directed energy source is applied to a portion of a material, creating at least one altered region and leaving at least one unaltered region. The material is exposed to an etchant which removes the at least one altered region leaving substantially all of the unaltered region.
Abstract:
Disclosed herein is a method of fabricating nano-components using nanoplates, including the steps of: printing a grid on a substrate using photolithography and Electron Beam Lithography; spraying an aqueous solution dispersed with nanoplates onto the grid portion to position the nanoplates on the substrate; depositing a protective film of a predetermined thickness on the substrate and the nanoplates positioned on the substrate; ion-etching the nanoplates deposited with the protective film by using a Focused Ion Beam (FIB) or Electron Beam Lithography; and eliminating the protective film remaining on the substrate using a protective film remover after the ion-etching of the nanoplates, and a method of manufacturing nanomachines or nanostructures by transporting such nano-components using a nano probe and assembling with other nano-components. The present invention makes it possible to fabricate the high-quality nano-components in a more simple and easier manner at a lower cost, as compared to other conventional methods. Further, the present invention provides a method of implementing nanomachines through combination of such nano-components and biomolecules, etc.
Abstract:
A method for generating a surface profile of a microstructure. The profile is processed to determine positions of at least two edges and an approximate center point of the profiled surface. Segments of points on the determined profile are fit to a straight line centered at the approximate center point. A standard deviation of the fitted points is measured. The length and position of the segment are varied until a minimum standard deviation is determined and the process is repeated for segments having different lengths. The point is determined from the longest segment having a standard deviation approximately equal to the minimum standard deviation of all of the segment lengths.
Abstract:
The present disclosure relates to a method for generating a three-dimensional microstructure in an object. In one embodiment, a method for fabricating a microscopic three-dimensional structure is provided. A work piece is provided that includes a target area at which the three-dimensional structure is to be fabricated. The target area has a plurality of virtual dwell points. A shaped beam is provided to project onto the work piece. The intersection of the shaped beam with the work piece defines a beam incidence region that has a desired shape. The beam incidence region is sufficiently large to encompass multiple ones of the virtual dwell points. The shaped beam is moved across the work piece such that different ones of the virtual dwell points come into it and leave it as the beam moves across the work piece thereby providing different doses to different ones of the virtual dwell points as the different dwell points remain in the beam incidence region for different lengths of time during the beam scan. In this way, a desired dose array of beam particles is applied onto the target area to form the three dimensional microstructure.
Abstract:
A method using an etchant and a laser for localized precise heating enables precise etching and release of MEMS devices with improved process control while expanding the number of materials used to make MEMS, including silicon-dioxide patterned films buried in and subsequently released from bulk silicon, as a direct write method of release of patterned structures that enables removal of only that material needed to allow the device to perform to be precisely released, after which, the bulk material can be further processed for additional electrical or packaging functions.
Abstract:
A method for forming a micro- or nano-pattern of a material on a substrate is presented. The method utilizes a buffer layer assisted laser patterning (BLALP). A layered structure is formed on the substrate, this layered structure being in the form of spaced-apart regions of the substrate defined by the pattern to be formed, each region including a weakly physisorbed buffer layer and a layer of the material to be patterned on top of the buffer layer. A thermal process is then applied to the layered structure to remove the remaining buffer layer in said regions, and thus form a stable pattern of said material on the substrate resulting from the buffer layer assisted laser patterning. The method may utilize either positive or negative lithography. The patterning may be implemented using irradiation with a single uniform laser pulse via a standard mask used for optical lithography.
Abstract:
Disclosed is a method for processing a three-dimensional structure having a fine three-dimensional shape and a smooth surface is disclosed in which the three-dimensional structure is usable for an optical device.The process method comprises the steps of depositing a thin layer for absorption of laser light on a flat substrate; depositing a transparent layer on the thin layer for absorption of laser light; and irradiating a process laser light, passing through the transparent layer; in which pulse injection energy of the process laser light is set to be the same as or smaller than the maximum pulse injection energy capable of exposing a surface of the thin layer in front in the incident direction of the process laser light, and to be set the same as or greater than the minimum pulse injection energy capable of removing the transparent layer in rear in the incident direction of the process laser light.
Abstract:
Disclosed is a method of manufacturing a microstructure that requires a first material and a second material attached together and a laser system for producing a laser beam. The first material should exhibit an ablation threshold that does not exceed a predetermined ablation fluence of the laser beam and the second material should exhibit a second ablation threshold that exceeds the predetermined ablation fluence. The removal process comprises removing a portion of the first material to leave a remnant thereof at an interface of the two materials and then, ablating the remnant material using the laser beam at the predetermined ablation fluence to remove the remnant material. The process of selecting the first of the two materials is based on the predetermined ablation fluence of the laser beam; and the selection a laser system is based on the respective ablation thresholds of the first and second materials.
Abstract:
A method for manufacturing a microstructure device using a near field scanning optical microscope (NSOM) laser micromachining system. A microstructure device preform, including an existing feature, is provided. The NSOM probe tip is scanned over a portion of the preform selected such that a plurality of scan lines cross the existing feature. Scanned locations of the existing feature in at least two scan lines are determined. The orientation of the existing feature is determined based on the scanned locations and the shape of the existing feature. At least one expected machining location in a subsequent scan line is determined based on the shape and orientation of the existing feature. The micro-machining laser is pulsed as the NSOM probe is scanned through the expected machining location(s) during the subsequent scan lines to form at least one fine feature on the microstructure device preform, thus, completing the microstructure device.