Abstract: A gas flow accelerator may include a body portion, and a tapered body portion including a first end integrally formed with the body portion. The gas flow accelerator may include an inlet port connected to the body portion and to receive a process gas to be removed from a semiconductor processing tool by a main pumping line. The semiconductor processing tool may include a chuck and a chuck vacuum line to apply a vacuum to the chuck to retain a semiconductor device. The tapered body portion may be configured to generate a rotational flow of the process gas to prevent buildup of processing byproduct on interior walls of the main pumping line. The gas flow accelerator may include an outlet port integrally formed with a second end of the tapered body portion. An end portion of the chuck vacuum line may be provided through the outlet port.

Abstract: An apparatus for producing silicon carbide crystal is provided and includes a composite structure formed by a plurality of graphite layers and silicon carbide seed crystals, wherein a density or thickness of each layer of graphite is gradually adjusted to reduce a difference of a thermal expansion coefficient and Young's modulus between the graphite layers and silicon carbide. The composite structure can be stabilized on a top portion or an upper cover of a crucible made of graphite, thereby preventing the silicon carbide crystal from falling off.

Abstract: The present invention is an article of headwear that is conformable so as to accommodate a wide range of head sizes comprised of at least a crown portion that substantially covers the head of the wearer. Proximate the lowest edge of the crown portion is a sweatband or headband permanently affixed thereto that is stretchable in all directions, not just vertically and horizontally. The band is comprised of elastic threads woven into a diamond pattern so that it is capable of stretching and returning substantially to its original shape. In an alternative embodiment of the sweatband, the sweatband comprises a base layer of a flexible material with a plurality of longitudinal bands of fibers with wicking, odor reducing and antibacterial properties superimposed upon the base material of the sweatband.

Abstract: The NH3 plasma treatment by remote plasma is firstly proposed to replace the covalent bonding process during surface modification procedure that for amine bond generation.

Abstract: The present invention is an article of headwear that is adjustable so as to accommodate a wide range of head sizes comprised of at least a crown portion that substantially covers scalp of the wearer. Proximate the lowest edge of the crown portion is a headband permanently affixed thereto that is stretchable in all directions. The headband is comprised of elastic woven into a diamond like pattern so that it is capable of stretching and returning substantially to its original size. The ends of the band may be attached to each other so as to make a complete circumference around the lowest edge of the crown portion of the headgear.

Abstract: The present invention is an article of headwear that is adjustable so as to accommodate a wide range of head sizes comprised of at least a crown portion that substantially covers scalp of the wearer. Proximate the lowest edge of the crown portion is a headband permanently affixed thereto that is stretchable in all directions. The headband is comprised of a ribbon of stretchable rubber that may be fully or partially enclosed within one or more pieces of the same or different strength stretchable material. In all embodiments of the present invention, the ends of the rubber band and stretchable material may be attached so as to make a complete circumference around the lowest edge of the crown portion of the headgear.

Abstract: The NH3 plasma treatment by remote plasma is firstly proposed to replace the covalent bonding process during surface modification procedure that for amine bond generation.