thin films – Page 3 – TechConnect Briefs

Broadband infrared reflecting thin films inspired by quasi-ordered photonic structures in squid tissue

Rotstein R., Sweeney A.M., Holt A., Stucky G.D., Morse D.E., UCSB, US

We present a novel synthetic approach to replicating the optical properties of quasi-ordered photonic structures in the silver-colored tissue in Loliginid squid. The squid system exhibits broadband reflectance in the visible spectrum. Rod-like polystyrene particles, [...]

An Ab Initio Study of CuGaSe2 (001) Surface

Chew S., Liborio L., Harrison N., Imperial College London, UK

The chalcopyrite material CuIn1-xGaxSe2 makes one of the best performing devices for thin film solar cells. Despite this, there is still a lack of understanding of some of the fundamental properties of the material. CuGaSe2 [...]

An Ab Initio Study of CuGaSe2 (001) Surface

Chew S., Liborio L., Harrison N., Imperial College London, UK

The chalcopyrite material CuIn1-xGaxSe2 makes one of the best performing devices for thin film solar cells. Despite this, there is still a lack of understanding of some of the fundamental properties of the material. CuGaSe2 [...]

Growth and investigations on Fe/MgO/Fe magnetic tunnel junctions fabricated by dual ion beam sputtering technique

Singh B., Gupta P., Chaudhary S., Pandya D.K., Kashyap S.C., Inidan Institute of Technology Delhi, IN

The experimental observation of Tunnel Magnetoresistance (TMR) in 1996 by Moodera’s group of MIT has triggered intensive efforts worldwide to fabricate and investigate the magnetoresistive junctions showing a TMR effect. While in past 3-4 years, [...]

The Nanophysics of TiO2/Au Model Catalyst as a Key to Understanding the High Efficiency of Real Au/TiO2 Catalyst and Technological Consequences

Tvauri I.V., Remar D.F., Turiev A.M., Tsidaeva N.I., Fukutani K., Magkoev T.T., University of North Ossetia, RU

Interaction of carbon monoxide and oxygen on the surface of titania/Au(111) inverse model catalyst held at 200 K has been studied by a set of surface science techniques. It was found that CO adsorbs on [...]

Magnetic properties of Sputter deposited and magnetically annealed IrMn/CoFeB nanometric bilayers for exchange biased magnetic tunnel junctions

Fulara H., Raju M., Chaudhary S., Kashyap S.C., Pandya D.K., Inidan Institute of Technology Delhi, IN

The work relates to the exploring the means of controlling the coercivities of the ferromagnetic thin films in a Magnetic Tunnel Junction Stack. Exchange bias route is a very powerful route in achieving this task. [...]

Aluminium-Doped ZnO Films and Nanowires by a Modified Chemical Vapor Deposition Technique

Pung S.Y., Choy K.L., University of Nottingham, UK

ZnO has unique properties such as wide-bandgap (3.37eV) and large exciton binding energy (60meV) at room temperature. These properties made ZnO a promising material for short wavelength photonic devices for examples, light emitting diode (LED) [...]

Use of Multiphysics modeling to improve solar thin film performance and manufacture

Jain A., Sanyal J., Ivanov V., Grald E., Mukhopadhyay A., ANSYS, Inc., US

Solar and wind energy are gaining attention for both technology innovation and commercialization, due to the environmental impacts of conventional energy sources, lack of technology breakthrough with hydrogen based systems, and rising oil prices,. Among [...]

Structure of Ni nanoparticles/TiO2 films prepared by sol-gel dip-coating

García-Murillo A., Ramírez-Meneses E., Ramírez-Salgado J., Sandoval-Robles B.G., Montiel-Palma V., Dorantes-Rosales H., Del Angel-Vicente P., Cicata - IPN Unidad Altamira, MX

Titania thin films were synthesized by sol-gel dip-coating method with metallic Ni nanoparticles from an organometallic precursor. Titania matrix and Ni nanoparticles were prepared separately. Titania precursor solution was prepared mixing titanium isopropoxide in isopropanol [...]

Multifunctional Materials Based on Chitosan, Globular Protein and Gold Nanoparticles

Indrea E., Dreve S., Bratu I., Mihailescu G., Olenic L., Tomoaia G., Tomoaia-Cotisel M., Mocanu A., Horovitz O., Tomoaia-Cotisel M., Babes-Bolyai University of Cluj-Napoca, RO

Our studies are focused on the structure of thin films of chitosan and of globular protein in both the absence and the presence of negatively charged gold nanoparticles. Deacetilated chitosan of high molecular weight and [...]