Abstract: A pellicle for extreme ultraviolet (EUV) lithography is based on yttrium carbide and used in a EUV lithography process. The pellicle for EUV lithography includes a pellicle layer that has a core layer containing yttrium carbide. The yttrium carbide is YCx in which the atomic percentage of carbon is within a range of 25% to 45%.

Abstract: A mobile communication device storing a file to be printed, the mobile communication device including: a communication unit to receive printer information of a printer; a network interface unit to connect to a printer server corresponding to the printer information received through the communication unit; and a control unit to transmit the file to be printed to the printer through the printer server according to the received printer information. Accordingly, users can print files using a mobile communication device while traveling away from a fixed printer.

Abstract: A mobile communication device storing a file to be printed, the mobile communication device including: a communication unit to receive printer information of a printer; a network interface unit to connect to a printer server corresponding to the printer information received through the communication unit; and a control unit to transmit the file to be printed to the printer through the printer server according to the received printer information. Accordingly, users can print files using a mobile communication device while traveling away from a fixed printer.

Abstract: Disclosed is a composition for preparing a rigid polyurethane foam having a good demolding property by defining polyol component and catalyst component. The polyol component comprises 40˜60 wt. % of polyol obtained by polymerization with an organic oxide using sorbitol as an initiator, 5˜10 wt. % of polyol obtained by polymerization with an organic oxide using ethylene diamine as an initiator, 20˜30 wt. % of polyol obtained by polymerization with an organic oxide using toluene diamine or toluene diamine and triethanol amine as a single or a complex initiator, and, optionally, 5˜20 wt. % of multivalent polyol of an ester structure, and the catalyst component is chosen in a group comprising a foaming catalyst, a gelling catalyst, a trimerization catalyst, a mixed form of the foaming catalyst and the gelling catalyst, and compound thereof.

Abstract: Disclosed is a composition for preparing a rigid polyurethane foam having a good demolding property by defining polyol component and catalyst component. The polyol component comprises 40-60 wt. % of polyol obtained by polymerization with an organic oxide using sorbitol as an initiator, 5˜10 wt. % of polyol obtained by polymerization with an organic oxide using ethylene diamine as an initiator, 20˜30 wt. % of polyol obtained by polymerization with an organic oxide using toluene diamine or toluene diamine and triethanol amine as a single or a complex initiator, and, optionally, 5-20 wt. % of multivalent polyol of an ester structure, and the catalyst component is chosen in a group comprising a foaming catalyst, a gelling catalyst, a trimerization catalyst, a mixed form of the foaming catalyst and the gelling catalyst, and compound thereof.