Post Doc Fellow, The NorthCap University, Gurugram, Haryana, India
Nanostructured thin films of chalcogenides have witnessed great attention due to their extra-ordinary properties compared to bulk materials.. They show significant changes in the optical and electrical properties on reduction of size below excitonic size. These interesting properties have led their applications in nanoelectronic devices, optical memory devices, fabrication of nanomemories etc. Nanostrutured glasses have reduced density i.e less nearest neighbors therefore, they possess entirely different structure than that of bulk materials of same composition. My research work is based on optical and electrical properties nanostructured Se-Te based glasses. It is found that electrical conductivity improves on nanostructure formation. Beside this, it was also found that optical band gap of sample also decreases for theses samples on nanostructure formation, which enable their applications in opto-electronic devices.
Abstract: A thermoelectric material that comprises a ternary main group matrix material and nano-particles and/or nano-inclusions of a Group 2 or Group 12 metal oxide dispersed therein. A process for making the thermoelectric material that includes reacting a reduced metal precursor with an oxidized metal precursor in the presence of nanoparticles.
Pub.: 16 Sep '14, Pinned: 30 Mar '18
Abstract: A luminescent device including an emission layer having luminescent nanoclusters is provided. The luminescent nanoclusters can be phosphorescent metal halides. The luminescent device can emit IR, NIR, colored, or white light and be pumped electrically or optically. A method for manufacturing a luminescent device including an emission layer having luminescent nanoclusters is also provided.
Pub.: 03 May '16, Pinned: 30 Mar '18
Abstract: A laser-sustained plasma light source includes a plasma cell configured to contain a volume of gas. The plasma cell is configured to receive illumination from a pump laser in order to generate plasma within the volume of gas. The plasma emits broadband radiation. The plasma cell includes one or more transparent portions being at least partially transparent to at least a portion of illumination from the pump laser and at least a portion of the broadband radiation emitted by the plasma. The plasma cell also includes one or more nanostructured layers disposed on one or more surfaces of the one or more transparent portions of the plasma cell. The one or more nanostructure layers form a region of refractive index control across an interface between the one or more transparent portions of the plasma cell and an atmosphere.
Pub.: 27 Dec '16, Pinned: 30 Mar '18
Abstract: Abstract In this review the investigations of direct surface relief formations in nanomultilayers from chalcogenide glasses are summarized. Chalcogenide glasses are known to exhibit several photoinduced phenomena, both scalar and vectorial, which are connected with photoinduced structural transformations, defects creation, and atoms diffusion. Surface relief formation in chalcogenide glasses films has been intensively studied due to its applicability to reversibly form versatile patterns and diffractive optical elements. Both intensity and polarization holography have been employed to generate surface relief structures in chalcogenide glasses materials, including monolayers and multilayer structures. The research outlined here has not only led to better understanding of the material properties that affect the optical performance of chalcogenides structures, but also illustrated the momentum in the field that has led to the development of high-performance nanostructured devices.
Pub.: 01 Sep '16, Pinned: 30 Mar '18