Abstract: A field effect transistor includes a substrate having a transistor forming region thereon; an insulating layer on the substrate; a first graphene layer on the insulating layer within the transistor forming region; an etch stop layer on the first graphene layer within the transistor forming region; a first inter-layer dielectric layer on the etch stop layer; a gate trench recessed into the first inter-layer dielectric layer and the etch stop layer within the transistor forming region; a second graphene layer on interior surface of the gate trench; a gate dielectric layer on the second graphene layer and on the first inter-layer dielectric layer; and a gate electrode on the gate dielectric layer within the gate trench.

Abstract: An inkjet ink is provided. The inkjet ink includes a modified high-performance engineering plastic, a polar solvent, and a wetting agent. Additionally, a 3D printing method and a 3D printing object are provided. The modified high-performance engineering plastic includes modified polyphenylene sulfide, modified polyether-ether-ketone, modified polyether sulfone, modified polyphenylsulfone, or modified polysulfone.

Abstract: The present disclosure relates to an eyelet which is easily fastened and has a strong coupling force, and the eyelet of the present disclosure includes an eyelet base and an eyelet washer, wherein the eyelet base includes: a disk-shaped base part having a circular hollow hole formed at a center portion thereof; a cylindrical fastening part formed to extend from an inner circumference of the base part formed by the hollow hole to be orthogonal to the base part, and inserted into a circular hollow hole in a center portion of the eyelet washer to be fastened to the eyelet washer; and a fixing protrusion formed in a ring shape on an outer circumference of the fastening part to prevent separation of the eyelet washer from the fastening part.

Abstract: The present disclosure relates to an eyelet which is easily fastened and has a strong coupling force, and the eyelet of the present disclosure includes an eyelet base and an eyelet washer, wherein the eyelet base includes: a disk-shaped base part having a circular hollow hole formed at a center portion thereof; a cylindrical fastening part formed to extend from an inner circumference of the base part formed by the hollow hole to be orthogonal to the base part, and inserted into a circular hollow hole in a center portion of the eyelet washer to be fastened to the eyelet washer; and a fixing protrusion formed in a ring shape on an outer circumference of the fastening part to prevent separation of the eyelet washer from the fastening part.

Abstract: An eyelets for a tarpaulin includes a female eyelet; and a male eyelet coupled to the female eyelet with a tarpaulin interposed therebetween, wherein the female eyelet and the male eyelet are coupled to each other through compression and bonding while the tarpaulin is inserted therebetween and are made of an olefin-based resin.