A method and system are disclosed of Pt and SnO.sub.2 co-functionalized on single-walled carbon nanotubes (SWNTs) assembled on microelectrodes by electrochemical deposition where Pt nanoparticle's morphology, size, and density were tuned by controlling electrodeposition potential and time. The method and system to obtain the optimum condition for Pt decorated SnO.sub.2/SWNTs (Pt/SnO.sub.2/SWNTs) were performed and also correlate with its CO sensing performance. Light dependent sensing performance was examined with red, green and UV LED light under room temperature. With the assistance of the UV LED light illumination, the sensitivity of Pt/SnO.sub.2/SWNTs was further enhanced to 2.1%/ppm.sub.V to 50 ppm.sub.V of CO and the detection limit can push down to 0.05 ppm.sub.V.

A method and system are disclosed of Pt and SnO.sub.2 co-functionalized on single-walled carbon nanotubes (SWNTs) assembled on microelectrodes by electrochemical deposition where Pt nanoparticle's morphology, size, and density were tuned by controlling electrodeposition potential and time. The method and system to obtain the optimum condition for Pt decorated SnO.sub.2/SWNTs (Pt/SnO.sub.2/SWNTs) were performed and also correlate with its CO sensing performance. Light dependent sensing performance was examined with red, green and UV LED light under room temperature. With the assistance of the UV LED light illumination, the sensitivity of Pt/SnO.sub.2/SWNTs was further enhanced to 2.1%/ppm.sub.V to 50 ppm.sub.V of CO and the detection limit can push down to 0.05 ppm.sub.V.

Disclosed is a solution composition which may be used for a single-bath electrochemical passivation and a method using the same. The solution composition includes a metal cation, a metal-oxide anion; and an organic ligand, and optionally includes a non-metallic oxide anion or a polymer. The solution composition may prevent undesired precipitation of metal oxides before performing passivation. In addition, the method of passivation using the solution composition in a single-bath use is also provided.

Disclosed is a solution composition which may be used for a single-bath electrochemical passivation and a method using the same. The solution composition includes a metal cation, a metal-oxide anion; and an organic ligand, and optionally includes a non-metallic oxide anion or a polymer. The solution composition may prevent undesired precipitation of metal oxides before performing passivation. In addition, the method of passivation using the solution composition in a single-bath use is also provided.

The present invention relates to a sensor element for detecting hydrogen chloride (HCl) gas, a sensor device having the sensor element, and a method of manufacturing the sensor element, wherein the sensor element includes: an ionic layer including a Ag ion obtained through ionization; an ion conductive layer, in which the Ag ion is conducted, the ion conductive layer being formed on the ionic layer; and a reactive layer, in which the Ag ion conducted from the ion conductive layer and HCl gas react with each other, the reactive layer being formed on the ion conductive layer. The sensor element detects HCl gas generated from insulting materials when fire occurs, thereby detecting an electrical fire and preventing gas and fire spreading.

The present invention relates to a sensor element for detecting hydrogen chloride (HCl) gas, a sensor device having the sensor element, and a method of manufacturing the sensor element, wherein the sensor element includes: an ionic layer including a Ag ion obtained through ionization; an ion conductive layer, in which the Ag ion is conducted, the ion conductive layer being formed on the ionic layer; and a reactive layer, in which the Ag ion conducted from the ion conductive layer and HCl gas react with each other, the reactive layer being formed on the ion conductive layer. The sensor element detects HCl gas generated from insulting materials when fire occurs, thereby detecting an electrical fire and preventing gas and fire spreading.

The present invention refers to a method for exfoliating and transferring graphene from a doped silicon carbide substrate to another substrate, the method being based on exfoliation induced by hydrogen bubbles produced in the electrolysis of water.

The present invention refers to a method for exfoliating and transferring graphene from a doped silicon carbide substrate to another substrate, the method being based on exfoliation induced by hydrogen bubbles produced in the electrolysis of water.

The present invention relates to a coating method for a plasma block and a plasma block coated by the same. The method comprises processing two sub-blocks capable of being coupled to each other for forming a flowing path; coating the flowing path of one sub-block by injecting an electrolytic solution to the flowing path after displacing an electrode within the flowing path; coating an outer surface of the one sub-block; and coating the other sub-block in the same manner as applied to the one sub-block.

The present invention relates to a coating method for a plasma block and a plasma block coated by the same. The method comprises processing two sub-blocks capable of being coupled to each other for forming a flowing path; coating the flowing path of one sub-block by injecting an electrolytic solution to the flowing path after displacing an electrode within the flowing path; coating an outer surface of the one sub-block; and coating the other sub-block in the same manner as applied to the one sub-block.