Abstract: Provided is an organic electrolytic solution including a lithium salt and an organic solvent containing an alkoxy-containing compound such as 1,1,3-trimethoxypropane. When polyglyme and an organic compound having dioxolane moiety are further added into the organic electrolytic solution, a lithium metal stabilizing effect and the ionic conductivity of lithium ions are enhanced, and thus, the charging/discharging efficiency of lithium is greatly improved. Such an organic electrolytic solution can be effectively used for any kind of lithium batteries and lithium sulfur batteries, even whose which use a lithium metal anode.

Abstract: A method for manufacturing a minute silicon mechanical device, which includes the steps of forming a diffusion region by doping a predetermined portion of a silicon substrate with an impurity of high density; forming an epitaxial layer over the silicon substrate including the diffusion region and forming an oxide layer over the epitaxial layer; forming an ohmic contact layer at the lower surface of the silicon substrate; patterning the oxide layer to have a striped configuration at that portion of the oxide layer corresponding to the predetermined portion of the diffusion region, thus exposing a predetermined portion of the epitaxial layer; forming a plurality of beams having a striped configuration by etching the exposed portion of the epitaxial layer, using the oxide layer as a mask and then removing the oxide layer; and removing the diffusion region below the plurality of beams.

Abstract: A method for making a micro tip of an FED device includes the steps converting impurity layer regions into porous semiconductor layer regions by performing an anodic reaction using an HF aqueous solution as an electrolytic solution, oxidizing the porous silicon layer regions, and removing the oxidation layer by etching with HF aqueous solution. The shape of the fabricated micro tip is regular and precise, since the size and height of the micro tip are easily controlled. Hence, the size and direction of an electron beam emitted from the micro tip is regular, and a reliability of the FED device is enhanced.