Japan: funding for nanoglass development projects

The New Energy and Industrial Technology Development Organization (NEDO), a Japanese government organization funding project proposals by Hitachi, Hitachi Cable, and Nippon Sheet Glass to develop mate…

The New Energy and Industrial Technology Development Organization (NEDO), a Japanese government organization funding project proposals by Hitachi, Hitachi Cable, and Nippon Sheet Glass to develop materials technologies for commercializing nanotechnology glass used in next-generation, high-performance optical storage systems. The proposals were submitted through the New Glass Forum, a non-profit organization comprising Japanese glass-makers, glass-users, and academia researchers, under NEDO“s Focus 21 program aimed at putting life back into Japan“s economy. Hitachi will attempt to develop thin film used in condensing the radium of blue-violet semiconductor lasers with a wavelength of 450 nanometers. The firm says it will develop such film, required to realize 350 gigabyte digital video discs, by using a cobalt oxide-based material and optimizing its composition and structure, as well as its thickness, when made into film. Hitachi Cable is looking to develop smaller-sized, high-density optical waveguides for use in optical communications through a metro-access network. The firm plans to use such methods as plasma chemical vapor deposition in producing glass film used in optical waveguides, while studying the correlation between the volume of dopants and optical waveguides“ fundamental properties, such as optical loss and polarization dependant loss. Hitachi Cable believes that optical loss can be cut to a minimum over a wide range of wavelengths by reducing the content of the hydroxyl group in the waveguiding layer. Nippon Sheet Glass will seek to develop deep-groove laminate – composed of silicon dioxide, titanium dioxide, and silicon nitride, with different refraction factors, and etched for high aspect ratio – which is capable of effectively separating wavelengths. The firm will concentrate on developing multilayered deep-groove diffraction gratings with each layer measuring 15 nanometers or less.