| Present: Nanomaterials
and Surface Physics
Studies of low dimensional systems, mainly using Grazing Incidence X-ray Scattering (GIXS) and Scanning Probe Microscopy (SPM) techniques, to find out the growth, morphology and transport properties.
- sputtering to study confinement effects on structure, electrical and mechanical properties. more... to study instability driven evolution of morphology and interface. more... Composite thin films: such as nanoparticles (Pt, Au, Ag, Cu, etc.) in ceramic (alumina, silica or titania) or polymer matrix prepared by - rf sputtering, sol-gel, ion implantation, spin coating to find and correlate the morphology with its different physical properties, especially with linear and non-linear optical properties. more... Organometallic thin films: such
as
- Langmuir monolayer, Langmuir-Blodgett (LB), Self-assembled
to study interfacial structure and to predict growth mechanism. more... Ripple-like patterned morphology generated on Si wafers by - ion bombardment to understand ripple formation mechanism mainly through subsurface crystalline ripple-like structure. more... Transition metal oxide (TMO) as
well as ionic glasses using unconventional network former such as
bismuth oxide and lead oxide have been prepared by rappid roller quench
technique, while TMO glasses using silica matrix which have high melting
points and high tendency towards phase separation have been prepared by
unusual
sol-gel technique.
All these glasses have been well
characterised using different techniques: Differential Thermal Analysis
(DTA), X-ray Diffraction (XRD), Scanning Electron Microscopy
(SEM), IR, UV-VIS, Raman spectroscopy, Electron
Spin Resonence (ESR), Magnetic susceptibility, etc.
Electrical transport measurements of these well characterised glasses have been made and analysed in the wide temperature range to find out the conduction and relaxation mechanisms. Also attampts have been made to find out the effect of unconventional glass former in the ac response and its correlation with the structure.
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