Optical properties of d.c. magneto sputtered tantalum and titanium nanostructure thin film metal hydrides

Abstract

Nanostructured thin films of tantalum and titanium were deposited on glass substrate using d.c. magnetron sputtering technique under the argon gas environment at a pressure of 0⋅1 mbar. Optical transmission and absorption studies were carried out for these samples with pressure of hydrogen. Large changes in both transmission and absorption on loading these films with hydrogen are accompanied by significant phase changes and electronic transformation. Optical photograph shows the colour variation after hydrogenation in case of tantalum film which may be used as decorative mirrors and hydrogen sensors. The hydrogen storage capability of thin films was confirmed by variation in optical properties.

Bilayer hybrid nanoimprinting method for fabricating embedded silver nanostructure arrays with enhanced photoluminescence

“…[5][6][7] New advanced nanofabrication methods have recently enabled a wide range of other applications, including metallic conductor-based electronic devices 8,9 and metal slits in optical modulators. [10][11][12] A protruding metal nanodot configuration has been typically achieved through high-precision microfabrication tools for lift-off [13][14][15] and direct-ion milling 16,17 of predefined patterns fabricated using nanoimprinting (NI) or soft nanolithography. Corrugated metal nanostructures have also been considered instead of isolated metal dots for use in optoelectronic devices.…”