A reversible bonded microfluidic structure comprises an overhanging cap or gasket structure atop a continuous microfluidic channel wall. An overhanging gasket structure may reduce stress concentrations at the edge of the channel wall and can permit improved reversible adhesion of the channel wall and adjacent dry adhesive fibers. In one example, reversible adhesion of the overhanging channel wall gasket and adjacent dry adhesive fibers may approach 1 MPa in axial loading. An overhanging gasket structure of the microfluidic channel wall may comprise a single fiber that is continuous around the perimeter of the desired microfluidic channel shape, and may define a self-sealing gasket which will contain fluid. The overhanging gasket structure may be surrounded by further overhanging or undercut dry adhesive fibers to enhance the adhesion and help make the rest of the surface more tolerant to defects and surface roughness.

A method is provided for making stamper plates for an embossing drum for embossing tape media. The stamper plates include at least one first plate having first land and groove patterns and at least one second plate having second land and groove patterns that are an inverse of the first land and groove patterns. Furthermore, the first stamper plates and the second stamper plates have four sections arranged in a travel direction of the tape media, a first and a fourth of the four sections having land and groove patterns that are laterally mirrored with respect to each other.

Provided is a method in which a computational device generates a design of a negative mold of teeth. The negative mold of the teeth is fabricated from the design of the negative mold. An aligner is formed using the fabricated negative mold. Provided also is a negative mold of teeth for fabricating a positive model of the teeth for an aligner. The negative mold comprises a tooth surface, and an identity tracking entity coupled to the tooth surface to provide identification.

A method for forming a mold insert includes forming a stamp, a surface of the stamp including a plurality of inverted microstructures formed thereon; and pressing the stamp into a medium disposed on a surface of a first mold insert to form a microstructured film, the microstructured film including a plurality of microstructures formed on a surface of the microstructured film based on the plurality of inverted microstructures, the plurality of microstructures being complementary to the plurality of inverted microstructures.

There are provided a master and a method for manufacturing the master, the master having, on its outer peripheral surface, a concave-convex structure in which concavities or convexities are continuously arranged with high precision. The master includes: a substrate with a hollow cylindrical shape or cylindrical shape; and a concave-convex structure on an outer peripheral surface of the substrate. The concave-convex structure has concavities or convexities continuously arranged at a predetermined pitch in a circumferential direction of the substrate. The concavities or convexities are arranged with a predetermined phase difference between circumferential rows adjacent in an axial direction of the substrate.

The same digital data is recorded with highly integrated manner on a plurality of media able to durably hold information over long-term. A minute graphic pattern indicating data bit information is drawn on a resist layer formed on a quartz glass substrate by exposing a beam and developed so as to prepare a master medium (M1), which comprises the quartz glass substrate having a minute recess and protrusion structure formed by etching where the remaining resist are used as a mask (FIG. (a)). The recess and protrusion structure recorded on the master medium (M1) is shaped and transferred onto a flexible recording medium (G2) on which a UV curable resin layer (61) is formed, whereby an intermediate medium (M2) is prepared (FIGS. (b)-(d)). The inverted recess and protrusion structure transferred to the intermediate medium (M2) is shaped and transferred onto a recording medium (G3) comprising a quartz glass substrate (70) on which a UV curable resin layer (80) is formed, whereby a reproduction medium (M3) having the same recess and protrusion structure as that of the master medium (M1) is prepared (FIGS. (e)-(h)). In shaping and transferring process, the media are separated using the flexibility of the intermediate medium (M2).

This invention relates to the low-cost manufacture of a tunable physical topographic pattern and more particularly to the manufacture of micro and nano scale hierarchical periodic wrinkle patterns that are generated upon compression of supported thin films. Disclosed herein is (i) a composite material with tunable hierarchical wrinkle patterns, wherein the composite material comprises a stretched and pre-patterned base layer and a thin film that is conformally attached to the pre-patterned surface of the base layer, (ii) a method of fabricating the pre-patterned base via pattern replication, and (iii) a method of fabricating tunable hierarchical wrinkle patterns, wherein the pattern can be deterministically switched across the hierarchical and non-hierarchical states via strain control.

A method is provided for making an embossing drum that is useable to emboss tape media. The method includes assembling together multiple stamper plates that each have embossing features for embossing tape media, and the stamper plates include at least one first plate and at least one second plate. Furthermore, the embossing features of each first plate are inverted with respect to the embossing features of each second plate.

Provided is a method in which a computational device generates a design of a negative mold of teeth. The negative mold of the teeth is fabricated from the design of the negative mold. An aligner is formed using the fabricated negative mold. Provided also is a negative mold of teeth for fabricating a positive model of the teeth for an aligner. The negative mold comprises a tooth surface, and an identity tracking entity coupled to the tooth surface to provide identification.

The subject matter described herein relates to methods and systems for fast imprinting of nanometer scale features in a workpiece. According to one aspect, a system for producing nanometer scale features in a workpiece is disclosed. The system includes a die having a surface with at least one nanometer scale feature located thereon. A first actuator moves the die with respect to the workpiece such that the at least one nanometer scale feature impacts the workpiece and imprints a corresponding at least one nanometer scale feature in the workpiece.