Abstract

A dry adhesive microfiber array comprising a plurality of fibers with enlarged tips, where the dry adhesive is capable of adhering to a surface of a silicon wafer and/or carrier. The dry adhesive can be debonded without the use of chemicals or heat and does not leave a residue on the surface of the wafer. In addition, a liquid can be introduced to the interface between the dry adhesive and semiconductor device to adjust the force of adhesion.

IPC Classes  ?

• H01L 21/50 - Assembly of semiconductor devices using processes or apparatus not provided for in a single one of the groups or

Goods & Services

Adhesive and high friction bands, rolls, pads, sheets, laminates, closures, or surface textures for industrial and commercial use.

Goods & Services

Eyewear; protective eyewear; protective eyewear and components thereof; safety eyewear; sports eyewear; eyewear accessories, namely, nose pads for eyewear, temple tips, and temple sleeves; nose guards which can be worn by attachment to eyewear such as sunglasses and ski goggles; nose pads for eyewear; nose clips for divers and swimmers; ear buds; wireless ear buds; protective ear covering shields; in-ear monitors not for medical purposes; ear pads for headphones; ear phones; protective sports helmet accessories that attach to the helmets, namely, mouth guards, ear pads, throat protectors, chin straps, face masks, jaw pads and eye shields. Grips for sporting articles, namely, tennis racquets, squash racquets, badminton racquets, racquetball racquets, paddle tennis racquets, golf clubs, cricket bats, softball bats, baseball bats, hockey sticks; handle grips for sporting equipment, namely, tennis racquets, squash racquets, badminton racquets, racquetball racquets, paddle tennis racquets, golf clubs, cricket bats, softball bats, baseball bats, hockey sticks; grip tapes for sporting equipment; racket grip tapes; athletic tapes; hunting camouflage used as hunting blinds; skateboard grip tapes.

Goods & Services

Adhesive and high friction bands, rolls, pads, sheets, laminates or surface textures made predominantly from polymers, for industrial and commercial use.

Goods & Services

Eyewear; protective eyewear; protective eyewear and components thereof; safety eyewear; sports eyewear; eyewear accessories, namely, nose pads for eyewear, nose guards, temple tips, and temple sleeves; nose guards which can be worn by attachment to eyewear such as sunglasses and ski goggles; nose pads for eyewear; nose clips for divers and swimmers; ear buds; wireless ear buds; protective ear covering shields; in-ear monitors not for medical purposes; ear pads for headphones; ear phones; Protective sports helmet accessories that attach to the helmets, namely, mouth guards, ear pads, throat protectors, chin straps, face masks, jaw pads and eye shields Grips for sporting articles, namely, tennis racquets, squash racquets, badminton racquets, racquetball racquets, paddle tennis racquets, golf clubs, cricket bats, softball bats, baseball bats, hockey sticks; handle grips for sporting equipment, namely, tennis racquets, squash racquets, badminton racquets, racquetball racquets, paddle tennis racquets, golf clubs, cricket bats, softball bats, baseball bats, hockey sticks; grip tapes for sporting equipment; racket grip tapes; athletic tapes; camouflage tapes used in hunting; skateboard grip tapes

Goods & Services

Adhesive and high friction bands, rolls, pads, sheets, laminates, closures, or surface textures for industrial and commercial use

Abstract

An aerodynamic or hydrodynamic wall surface has an array of fibrillar structures disposed on and extending from the wall surface, wherein each fibrillar structure comprises a stalk and a tip. The stalk has a first end and a second end, wherein the first end is attached to the wall surface, and the stalk is oriented with respect to the wall surface at a stalk angle between approximately 1 degrees and 179 degrees. The tip has a first side and a second side, wherein the first side is attached proximate to the second end of the stalk, the tip has a larger cross-sectional area than the stalk, and the second side comprises a substantially planar surface that is oriented with respect to the stalk at a tip angle between approximately 0 degrees and 90 degrees.

IPC Classes  ?

• F15D 1/00 - Influencing the flow of fluids
• B64C 21/10 - Influencing air flow over aircraft surfaces by affecting boundary layer flow using other surface properties, e.g. roughness
• B63B 1/36 - Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction using mechanical means

Abstract

This invention identifies important geometric parameters of an adhesive microfiber with mushroom-shaped tip for improving and optimizing adhesive ability. The magnitude of pull-off stress is dependent on a wedge angle γ and the ratio of the tip radius to the stalk radius β of the mushroom-shaped fiber. Pull-off stress is also found to depend on a dimensionless parameter x, the ratio of the fiber radius to a length-scale related to the dominance of adhesive stress. Finally, the shape of edge tip, where the surface and sides of the mushroom-shaped tip join, is a factor that impacts strength of adhesion. Optimizing ranges for these parameters are identified.

IPC Classes  ?

• C09J 9/00 - Adhesives characterised by their physical nature or the effects produced, e.g. glue sticks
• C09J 7/00 - Adhesives in the form of films or foils
• D01D 5/20 - Formation of filaments, threads, or the like with varying denier along their length

Abstract

An aerodynamic or hydrodynamic wall surface has an array of fibrillar structures disposed on and extending from the wall surface, wherein each fibrillar structure comprises a stalk and a tip. The stalk has a first end and a second end, wherein the first end is attached to the wall surface, and the stalk is oriented with respect to the wall surface at a stalk angle between approximately 1 degrees and 179 degrees. The tip has a first side and a second side, wherein the first side is attached proximate to the second end of the stalk, the tip has a larger cross-sectional area than the stalk, and the second side comprises a substantially planar surface that is oriented with respect to the stalk at a tip angle between approximately 0 degrees and 90 degrees.

IPC Classes  ?

• B64C 21/10 - Influencing air flow over aircraft surfaces by affecting boundary layer flow using other surface properties, e.g. roughness
• B64C 23/00 - Influencing air flow over aircraft surfaces, not otherwise provided for
• F15D 1/10 - Influencing the flow of fluids around bodies of solid material

Abstract

This invention identifies important geometric parameters of an adhesive microfiber with mushroom-shaped tip for improving and optimizing adhesive ability. The magnitude of pull-off stress is dependent on a wedge angle γ and the ratio of the tip radius to the stalk radius β of the mushroom- shaped fiber. Pull-off stress is also found to depend on a dimensionless parameter x, the ratio of the fiber radius to a length- scale related to the dominance of adhesive stress. Finally, the shape of edge tip, where the surface and sides of the mushroom-shaped tip join, is a factor that impacts strength of adhesion. Optimizing ranges for these parameters are identified.

IPC Classes  ?

• C09J 7/00 - Adhesives in the form of films or foils
• B29C 41/30 - Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped articleApparatus therefor for making articles of indefinite length incorporating preformed parts or layers, e.g. moulding around inserts or for coating articles
• D02J 1/00 - Modifying the structure or properties resulting from a particular structureModifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
• D02J 3/00 - Modifying the surface