A glass holder device for treatment of optical glasses or other substrates horizontally supports an elongated bar with evenly spaced notches on a frame and suspends glass holder grips in parallel side-by-side vertical relation. An overcoat film is provided on the wiring lines and the one side of the semiconductor substrate, The overcoat film has a plurality of openings in parts corresponding to the connection pad portions of the wiring lines. The controller may acquire content information corresponding at least one streaming content from on a web page accessed through the radio communication unit interface. The sending unit activates the sensor light that emits radiation at a minimum of two wavelengths. the \u03b1-alumina nano powder is prepared by glycolating aluminium alkoxide in glycol solution containing the \u03b1-iron oxide or \u03b1-alumina nucleation seed and carrying out glyco thermal reaction.