Abstract:
The present invention provides a device for culturing cells. The device includes a well and a membrane. The well has an internal space and a membrane actuating control channel. The internal space has an inlet and an outlet. The membrane is provided between the membrane actuating control channel and the internal space such that the membrane actuating control channel is isolated from the internal space. The membrane is elastically varied in shape to form a three-dimensional cell culture space in the internal space.
Abstract:
The present invention relates to novel hydrogenases isolated from novel hyperthermophilic strains belonging to Thermococcus spp., genes encoding the hydrogenases, and methods of producing hydrogen using strains having the genes. According to the hydrogen production methods of the invention, a large amount of hydrogen can be produced merely by culturing the strains in specific culture conditions. Thus, the methods of the invention have advantages in that they are more economic and efficient than existing hydrogen production methods and can produce hydrogen even at high temperature.
Abstract:
An electrolyte for a rechargeable lithium battery that includes a non-aqueous organic solvent, a lithium salt, and an electrolyte additive. The electrolyte additive includes 2 to 6 wt % of succinonitrile, 2 to 6 wt % of alkane sultone, and 1 to 3 wt % of vinylethylene carbonate based on the total weight of the electrolyte.
Abstract:
Disclosed is an E-beam lithography system for synchronously irradiating surfaces of a plurality of substrates. The E-beam lithography system may include a loading unit loading and unloading substrates, an alignment chamber aligning the substrates, a transfer chamber transferring the substrates from the loading unit or chambers, a lithography chamber radiating one or more electron beams onto the substrates, and a vacuum chamber creating a vacuum in the chambers. A stage may be installed in the lithography chamber such that the substrates may be mounted on the stage and radiated with one or more electron beams.
Abstract:
Provided is a method of fabricating a thin film device. A sacrifice layer is formed on a first substrate. A thin film laminated body is formed on the sacrifice layer. A separation groove exposing the sacrifice layer is formed to divide the thin film laminated body into at least one thin film device. The sacrifice layer is partially removed using a dry etching process. After the partial removal of the sacrifice layer, a remaining sacrifice layer region maintains the thin film device on the first substrate. A supporting structure is temporarily joined to the thin film device. The thin film device joined to the supporting structure is separated from the first substrate. Then, the remaining sacrifice layer is removed. The thin film device joined to the supporting structure is joined to a second substrate. Finally, the supporting structure is separated from the thin film device.
Abstract:
Provided is a method of fabricating a probe pin. In the method, a concave region for a probe pin is formed on a mold substrate. The surface roughness of the concave region is reduced to smooth the surface of the concave region. A release layer is formed on the surface of the concave region of the mold substrate. A plating process is performed to form a probe pin corresponding to the concave region. After the performing of the plating process, the mold substrate having the probe pin is disposed on a circuit substrate and the probe pin is connected to a desired portion of the circuit substrate. Thereafter, the mold substrate is separated from the probe pin in such a way that the mold substrate remains unchanged. Also, the separated mold substrate may be reused.
Abstract:
A thin type reformer for a fuel cell is provided, and includes a substrate, fuel filling portion, reformer portion, CO remover, and cover. The substrate forms a passage within. The fuel filling portion fills the passage with fuel. The reformer portion forms a passage to one side of the fuel filling portion in the substrate, and the CO remover forms a passage at an opposite side of the fuel filling portion in the substrate. The cover covers the top of the substrate and seals the passages. The fuel filling portion partitions the reformer portion's heat absorbing reaction and the CO remover's heat radiating reaction and induces a reforming reaction. The reacting efficiencies of the reformer portion and the CO remover substantially increase. Because a compact air supplying pump can be used due to an inner pressure reduction in the CO remover, the entire device can be miniaturized.
Abstract:
Provided is a probe card. The probe card includes a ceramic substrate including a signal line, and a plurality of probe pins formed on the ceramic substrate, and including probe bodies having one end connected to the signal line and probe tips formed at other end of the probe body. The probe body is divided into a first section adjacent to the signal line and second section adjacent the probe tips. The first section is united by an insulating support, and the second sections are divergently arranged to position the probe tips at different measurement regions, respectively.
Abstract:
Disclosed are an ink-jet head and a manufacturing method thereof. The ink-jet head, which has a reservoir storing ink, a chamber being supplied with the ink from the reservoir, a restrictor connecting the reservoir to the chamber, and a nozzle discharging the ink, includes: a chamber plate, in which the chamber is formed; a vibration plate, which is laminated on an upper surface of the chamber plate to cover the chamber and in which a first coil is placed; a first middle plate, which is laminated on a lower surface of the chamber plate and in which the restrictor is formed, and a second coil is placed; and a lower plate part, which is laminated on a lower surface of the first middle plate and in which the reservoir and the nozzle are formed.
Abstract:
The present invention relates to a flexible multi-functional logic circuit which switches a current direction to a serial or parallel direction using at least two single electron transistors (SETs) having the same pattern and as many field effect transistors (FETs) as the number of the single electron transistors and performs operations on multi-valued signals using Coulomb oscillation that is the unique characteristic of SET to enable conversion of a single logic circuit to four basic logic circuits of NAND, OR, NOR and AND gates and a device using the same.