7 results about "Micropatterning" patented technology

A surface-enhanced Raman spectroscopy (SERS) having a plurality of ordered nanostructures arranged on a substrate and a process of making the same are provided. The process of fabricating silver nanoparticles from surface nanodroplet reaction includes placing a chemically micro-patterned substrate inside a narrow fluid chamber; filling the chamber with a ternary mixture; replacing the ternary mixture by water saturated with Vitamin E to form droplets of Vitamin E (VE) on the substrate with hydrophobic micro-patterns; providing a precursor solution to the substrate by passing the precursor solution through the microchamber; providing VE droplet liquid on the micro-patterned substrate; and reacting the precursor solution with the VE droplet liquid at a biphasic interface of the droplets on the substrate leading to the nucleation of AgNPs and subsequent growth towards nanostructures.

Implanted medical devices need a mechanism of immobilization to surrounding tissues, which minimizes tissue damage while providing reliable long-term anchoring. This disclosure relates to techniques for patterning arbitrarily shaped 3D objects and to patterned balloon devices having micro- or nano-patterning on an outer surface of an inflatable balloon. The external pattern can provide enhanced friction and anchoring in an aqueous environment. Examples of these types of patterns are hexagonal arrays inspired by tree frogs, corrugated patterns, and microneedle patterns. The patterned balloon devices can be disposed between an implant and surrounding tissues to facilitate anchoring of the implant.

An implantable thin-film mesh device and related methods are provided. The implantable thin-film mesh device includes a thin-film mesh including a plurality of spirals. The spirals allow the thin-film mesh to expand omni-directionally. In one or more embodiments, the spirals may be logarithmic spirals, golden spirals, approximated golden spirals, box Phi spirals, or Fibonacci spirals. The thin-film mesh may be formed from thin-film Nitinol (TFN), and may be fabricated via sputter deposition on a micropatterned wafer.

This invention relates to a printing apparatus, method of use, and application for printing micro-patterns. The printing apparatus for printing micro-patterns includes at least one writing unit, which comprises a liquid storage slit unit and at least one liquid dispensing guide device. The liquid storage slit unit includes a first side structure having a first side surface and a second side surface structure having a second side surface, the first and second sides being arranged opposite each other to form a liquid storage slit. The liquid dispensing guide device has at least two flexible dispensing beams, each flexible beam including a thicker end and a sharper end. When there is liquid to be printed between corresponding flexible dispensing beams, the corresponding sharpers can approach each other. The printing apparatus can achieve stable liquid supply, stable writing, high precision, adaptability to different writing directions, low risk of clogging, and easy cleaning and / or replacement; it can achieve high-throughput micro-pattern writing.

A waveguide comprising a pair of opposing surfaces arranged to guide a wavefront therebetween by internal reflection. The waveguide further comprises a first surface of the pair of opposing surfaces comprising a first section and a second section. The first section is substantially transmissive and is configured to receive the wavefront. The second section is substantially reflective and is configured to internally reflect the wavefront. The first section and the second section abut one another to form a non-linear and irregularly oscillating boundary line parallel to the first surface of the waveguide.

A radio frequency transparent solar reflective heat insulation film includes a substrate, a near-infrared reflective layer, an adhesive layer, a protective layer, and a scratch-resistant and abrasion-resistant layer. The near-infrared reflective layer is disposed on the substrate and includes at least one DMD structure. Each DMD structure includes a first dielectric layer, a second dielectric layer, and a metal layer sandwiched between the first and second dielectric layers. The near-infrared reflective layer is micro-patterned to form independent metal regions with gaps large enough to interrupt the electrical continuity of the metal layers, thereby enabling radio frequency signal transmission while maintaining near-infrared reflectivity. The adhesive layer is disposed above the near-infrared reflective layer and contacts the substrate through the gaps. The protective layer is laminated on the adhesive layer. The scratch-resistant and abrasion-resistant layer is disposed on the top surface of the protective layer.

The present invention discloses a method for micro-patterning a silicon carbide seed wafer for crystal growth. The present invention facilitates control over the polytype for the following crystal growth, ensuring the resulting crystal corresponds to the desired silicon carbide polytype, preventing the formation of undesired polytypes.