02465nas a2200241 4500008004100000022001400041245008600055210006900141260010600210300001400316490000700330520159100337653001501928653002201943100001901965700001801984700002002002700001902022700002202041700002002063700002102083856011902104 2006 eng d a0022-369700aPhotoelectrochemical properties of electrochemically deposited CdIn2S4 thin films0 aPhotoelectrochemical properties of electrochemically deposited C aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLANDbPERGAMON-ELSEVIER SCIENCE LTDcNOV a2331-23360 v673 a

Thin films of CdIn2S4 have been deposited on to stainless steel and fluorine-doped tin oxide (FTO)-coated glass substrates from aqueous acidic bath using an electrodeposition technique. Ethylene diamine tetra-acetic acid (EDTA) disodium salt is used as complexing agent to obtain good-quality deposits by controlling the rate of the reaction. The different preparative parameters like concentration of bath, deposition time, bath temperature, pH of the bath have been optimized by the photoelectrochemical (PEC) technique in order to get good-quality photosensitive material. Different techniques have been used to characterize CdIn2S4 thin films. Optical absorption shows the presence of direct transition with band gap energy 2.17 eV. The X-ray diffraction (XRD) analysis of the as-deposited and annealed films showed the presence of polycrystalline nature. Energy-dispersive analysis by X-ray (EDAX) study for the sample deposited at optimized preparative parameters shows that the In-to-Cd ratio is almost 2 and S-to-Cd ratio is almost 4. Scanning electron microscopy (SEM) for samples deposited at optimized preparative parameters reveals that spherical grains are uniformly distributed over the surface of the substrate indicates the well-defined growth of polycrystalline CdIn2S4 thin film. PEC characterization of the films is carried out by studying photoresponse, spectral response and photovoltaic output characteristics. The fill factor (ff) and power conversion efficiency (eta) of the cell are 69 and 2.94%, respectively. (c) 2006 Elsevier Ltd. All rights reserved.

10aThin films10aX-ray diffraction1 aKokate, A., V.1 aAsabe, M., R.1 aDelekar, S., D.1 aGavali, L., V.1 aMulla, Imtiaz, S.1 aHankare, P., P.1 aChougule, B., K. uhttp://library.ncl.res.in/content/photoelectrochemical-properties-electrochemically-deposited-cdin2s4-thin-films-001843nas a2200241 4500008004100000022001400041245008600055210006900141260010200210300001200312490000700324520095100331653002101282653003101303653002301334653003301357653001501390100002001405700002001425700002001445700002001465856011601485 2010 eng d a0304-428900aMonitoring structural defects and crystallinity of carbon nanotubes in thin films0 aMonitoring structural defects and crystallinity of carbon nanotu aC V RAMAN AVENUE, SADASHIVANAGAR, P B \#8005, BANGALORE 560 080, INDIAbINDIAN ACAD SCIENCEScMAR a447-4550 v743 a

We report the influence of catalyst formulation and reaction temperature on the formation of carbon nanotube (CNT) thin films by the chemical vapour deposition (CVD) method. Thin films of CNTs were grown on Fe-Mo/Al(2)O(3)-coated silicon wafer by thermal decomposition of methane at different temperatures ranging from 800 to 1000A degrees C. The electron microscopic investigations, SEM as well as HRTEM, of the as-grown CNT thin films revealed the growth of uniform multi-walled CNTs in abundance. The intensity ratio of D-band to G-band and FWHM of G-band through Raman measurements clearly indicated the dependency of structural defects and crystallinity of CNTs in thin films on the catalyst formulation and CVD growth temperature. The results suggest that thin films of multi-walled CNTs with negligible amount of defects in the nanotube structure and very high crystallinity can be obtained by thermal CVD process at 925A degrees C.

10aCarbon nanotubes10achemical vapour deposition10aRaman spectroscopy10ascanning electron microscopy10aThin films1 aMahajan, S., S.1 aBambole, M., D.1 aGokhale, S., P.1 aGaikwad, A., B. uhttp://library.ncl.res.in/content/monitoring-structural-defects-and-crystallinity-carbon-nanotubes-thin-films-001645nas a2200241 4500008004100000022001400041245009700055210006900152260006900221300001000290490000800300520079800308653001201106653002301118653001501141653002201156100002001178700001901198700001801217700001901235700002201254856012701276 2010 eng d a0925-838800aPreparation and characterization of CuInSe2 thin films by chemical bath deposition technique0 aPreparation and characterization of CuInSe2 thin films by chemic aPO BOX 564, 1001 LAUSANNE, SWITZERLANDbELSEVIER SCIENCE SAcJUN a78-810 v5003 a

Copper indium diselenide (CIS) thin films have been deposited using a precursor solution containing copper sulphate, indium trichoride, hydrazine hydrate and sodium selenosulphate in an aqueous alkaline medium at room temperature. The as grown brown colored films were found to be well adherent to glass substrates. The films were characterized by X-ray diffraction, scanning electron microscopy, atomic absorption spectroscopy, optical absorption, electrical resistivity, and thermo electric measurement techniques. The analysis of optical absorption data shows band-gap energy (E-g) to be 1.1 eV. The electrical resistivity of the thin film was found to be of the order of 10(2) (Omega cm). Thermoelectric power measurement shows n-type conduction. (C) 2010 Published by Elsevier B.V.

10aCuInSe210aOptical properties10aThin films10aX-ray diffraction1 aHankare, P., P.1 aRathod, K., C.1 aChate, P., A.1 aJadhav, A., V.1 aMulla, Imtiaz, S. uhttp://library.ncl.res.in/content/preparation-and-characterization-cuinse2-thin-films-chemical-bath-deposition-technique-001634nas a2200253 4500008004100000022001400041245009400055210006900149260006900218300001200287490000800299520075400307653001901061653001901080653001501099653002201114100002001136700001901156700002101175700001801196700002201214700002001236856012401256 2010 eng d a0925-838800aSynthesis and characterization of nickel selenide thin films deposited by chemical method0 aSynthesis and characterization of nickel selenide thin films dep aPO BOX 564, 1001 LAUSANNE, SWITZERLANDbELSEVIER SCIENCE SAcFEB a228-2310 v4903 a

Nickel selenide thin films have been deposited using chemical bath method on non-conducting glass substrates in a tartarate bath containing nickel sulphate octahydrate, hydrazine hydrate, sodium seleno-sulphate in an aqueous alkaline medium. The grown films were uniform, well adherent and black in color. The films were characterized using X-ray diffraction, scanning electron microscopy, optical absorption and electrical measurements. The nickel selenide thin film revealed polycrystalline nature with hexagonal system. The direct optical band gap of the film was found to be 1.61 eV. Electrical resistivity of film was observed in the order of 10(3) (Omega cm) with p-type conduction mechanism. (C) 2009 Elsevier B.V. All rights reserved.

10aCrystal growth10aSemiconductors10aThin films10aX-ray diffraction1 aHankare, P., P.1 aJadhav, B., V.1 aGaradkar, K., M.1 aChate, P., A.1 aMulla, Imtiaz, S.1 aDelekar, S., D. uhttp://library.ncl.res.in/content/synthesis-and-characterization-nickel-selenide-thin-films-deposited-chemical-method-002738nas a2200265 4500008004100000022001400041245009000055210006900145260007300214300001200287490000800299520182300307653001702130653001902147653001902166653001302185653001502198653002002213100002602233700002802259700002702287700001902314700002302333856011602356 2010 eng d a0926-860X00aVanadia-titania thin films for photocatalytic degradation of formaldehyde in sunlight0 aVanadiatitania thin films for photocatalytic degradation of form aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcFEB a103-1090 v3743 a

Thin films of vanadia-titania with good adhesion to the substrates have been deposited on various substrates such as glass slides, glass helix and silica raschig rings by simple sol-gel dip coating process using vanadium and titanium peroxide gel. The optimum concentration of vanadia in titania for obtaining good uniform viscous gel was found to be 0.5-4 wt% beyond which the vanadia particles disturb the gel network, resulting in the formation of a gelatinous precipitate. The films of vanadia-titania as well as the dried powder of the bulk gel were characterized by different characterization techniques. Optical characterization by UV-vis spectrophotometer showed a shift in optical absorption wavelength to the visible region that may be due to the incorporation of vanadia into titania structure. The XRD revealed the formation of anatase phase in pure titania as well as titania with up to 2% vanadia loading, whereas formation of rutile as minor phase along with anatase as major phase was observed at higher vanadia loading. The XRD did not show any peaks of vanadia phase up to 5% vanadia loading indicating either incorporation of vanadia into titania structure or high dispersion of amorphous vanadia on titania support. The pure and vanadia doped TiO(2) thin films were evaluated for their photocatalytic activity for degradation of methylene blue as a model pollutant under sunlight. Doping Of V(2)O(5) in TiO(2) showed an increase in the photo-degradation rate of methylene blue by a factor of 3-6.6 times compared to pure TiO(2). The highest rate has been obtained for 4% V(2)O(5)-doped TiO(2) films. Vanadia doped TiO(2) thin films were also found to be very active for photocatalytic degradation of formaldehyde from aqueous solution in sunlight. (c) 2009 Elsevier B.V. All rights reserved.

10aFormaldehyde10aMethylene blue10aPhotocatalysis10aSunlight10aThin films10aV(2)O(5)/TiO(2)1 aAkbarzadeh, Rokhsareh1 aUmbarkar, Shubhangi, B.1 aSonawane, Ravindra, S.1 aTakle, Srikant1 aDongare, Mohan, K. uhttp://library.ncl.res.in/content/vanadia-titania-thin-films-photocatalytic-degradation-formaldehyde-sunlight-002059nas a2200229 4500008004100000022001400041245015900055210006900214260007300283300001400356490000800370520113800378653002801516653002601544653002601570653002801596653001501624100002001639700002001659700002401679856012601703 2011 eng d a0169-433200aEnhanced dielectric permittivity in poly (vinylidene) fluoride/multiwalled carbon nanotubes nanocomposite thin films fabricated by pulsed laser deposition0 aEnhanced dielectric permittivity in poly vinylidene fluoridemult aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcNOV a1256-12600 v2583 a

The fabrication of high quality thin films of poly (vinylidene fluoride) embedded with multiwalled carbon nanotubes using pulsed laser deposition technique is reported. The prepared films were characterized for structural, morphology and dielectric properties. The morphology analysis revealed uniform dispersion of multiwalled carbon nanotubes throughout the polymer matrix. X-ray diffraction results suggested that the poly (vinylidene fluoride) film is in amorphous phase while addition of multiwalled carbon nanotubes showed presence of crystalline peaks in the nanocomposites films. It was interesting to note that the nanocomposite films exhibits significant enhancement of the ferroelectric beta-phase as evidenced by the X-ray diffraction and Fourier transform infrared spectroscopy results. The dielectric analysis shows a remarkable enhancement in the dielectric permittivity of nanocomposites with lower loss and conductivity level. The results can be attributed to the formation of minicapacitor network and relatively higher percolation threshold in the nanocomposites. (C) 2011 Elsevier B.V. All rights reserved.

10aDielectric permittivity10aFerroelectric polymer10aPercolation threshold10apulsed laser deposition10aThin films1 aChanmal, Chetan1 aDeo, Meenal, S.1 aJog, Jyoti, Prakash uhttp://library.ncl.res.in/content/enhanced-dielectric-permittivity-poly-vinylidene-fluoridemultiwalled-carbon-nanotubes-001731nas a2200241 4500008004100000022001400041245010800055210006900163260007300232300001400305490000800319520084300327653002801170653002301198653001501221653001501236100002701251700002201278700002401300700001701324700002201341856012601363 2011 eng d a0169-433200aLow thermal emissive surface properties of ZnO/polyimide composites prepared by pulsed laser deposition0 aLow thermal emissive surface properties of ZnOpolyimide composit aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcJAN a1824-18280 v2573 a

We report the low thermal-emissive surface properties of composites of ZnO-polyimide. The composites were synthesized by depositing ZnO on polyimide surface by pulsed laser deposition technique. ZnO target was ablated at different incident energy densities and the substrate (polyimide) was held at elevated temperature. This facilitated the c-axis oriented growth of ZnO, which was inferred from the X-ray diffraction analysis. The composites consisted of multilayers having different electrical resistivities. The values of which are also estimated from Hagen-Rubens relation. The reduced infrared emissivities of the composite films, as compared to polyimide, were correlated to the increased carrier concentration and reduced surface resistivity estimated from the Hall measurements. (C) 2010 Elsevier B.V. All rights reserved.

10apulsed laser deposition10aThermal emissivity10aThin films10aZinc oxide1 aBabrekar, Harshada, A.1 aJejurikar, S., M.1 aJog, Jyoti, Prakash1 aAdhi, K., P.1 aBhoraskar, S., V. uhttp://library.ncl.res.in/content/low-thermal-emissive-surface-properties-znopolyimide-composites-prepared-pulsed-laser-001954nas a2200265 4500008004100000022001400041245013900055210006900194260009500263300001200358490000800370520097100378653002201349653002801371653001801399653001201417653001501429100001801444700002001462700002501482700002001507700002001527700001801547856012301565 2011 eng d a0021-979700aOne-step in situ synthesis of NHx-adsorbed rhodium nanocrystals at liquid-liquid interfaces for possible electrocatalytic applications0 aOnestep in situ synthesis of NHxadsorbed rhodium nanocrystals at a525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USAbACADEMIC PRESS INC ELSEVIER SCIENCEcJUN a238-2440 v3583 a

Nearly monodisperse rhodium nanoparticles with adsorbed NHx were synthesized at the CCl4-water interface. The presence of NHx-adsorbed species was confirmed by energy-dispersive X-ray analysis (EDX) and X-ray photoelectron spectroscopy (XPS) studies. The synthesis of controlled size 2-38 nm rhodium particles was studied as a function of reducing agent concentration by transmission electron microscopy (TEM). HRTEM confirmed the formation of rhodium nanoparticles having fringe spacing consistent with reported Rh (1 1 1) planes. The continuity of these films over an area of 1 x 1 pm was revealed by atomic force microscopy (AFM) studies. The electrocatalytic application of these nanostructure Rh-NHx), thin films for formaldehyde oxidation in 0.5 M NaOH was investigated by cyclic voltammetry. The Rh nanoparticles formed by the present strategy are expected to be useful for other catalytic applications also. (C) 2011 Elsevier Inc. All rights reserved.

10aHydrazine hydrate10aLiquid-liquid interface10aNanoparticles10aRhodium10aThin films1 aPatil, V., S.1 aKrishna, S., R.1 aHawaldar, Ranjit, R.1 aGaikwad, A., B.1 aSathaye, S., D.1 aPatil, K., R. uhttp://library.ncl.res.in/content/one-step-situ-synthesis-nhx-adsorbed-rhodium-nanocrystals-liquid-liquid-interfaces-002352nas a2200229 4500008004100000022001400041245013300055210006900188260006700257300001400324490000800338520147800346653003401824653002401858653001401882653002501896653001501921100002201936700002201958700001601980856012601996 2012 eng d a0021-899500aEffect of the surface roughness of conducting polypyrrole thin-film electrodes on the electrocatalytic reduction of nitrobenzene0 aEffect of the surface roughness of conducting polypyrrole thinfi a111 RIVER ST, HOBOKEN 07030-5774, NJ USAbWILEY-BLACKWELLcAUG a1875-18810 v1253 a

Conducting polypyrrole (PPy) thin-film electrodes were prepared by the electropolymerization of pyrrole on gold-coated glass plates. Films of various roughnesses were obtained by the variation of the scan rates during electropolymerization. These thin films were modified by doping with 6mM of the dopant NiCl2. The surface morphology of the films was studied by scanning electron microscopy and atomic force microscopy (AFM), which suggested films prepared with a high scan rate were rougher in nature than the films produced with a low scan rate. The electrocatalytic reduction of nitrobenzene was carried out with these electrodes with the cyclic voltammetry technique in acetonitrile containing 0.1M HClO4 as a supporting electrolyte. The various results obtained show that the conducting PPy thin-film electrodes were catalytically active toward the electroreduction process. The modified PPy film electrodes doped with NiCl2 were more active toward nitrobenzene electroreduction than the PPy film alone. The results indicate that the roughness of the films played a very important role in determining their catalytic activity. The PPy films that were more rough in nature were catalytically more active than the smooth films; this may have been due to the availability of more reactive sites in the case of rough films. The apparent diffusion coefficients of the PPy film electrodes were also calculated. (c) 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012

10aatomic force microscopy (AFM)10aconducting polymers10aDiffusion10asurface modification10aThin films1 aAdhikari, Arindam1 aRadhakrishnan, S.1 aVijayan, M. uhttp://library.ncl.res.in/content/effect-surface-roughness-conducting-polypyrrole-thin-film-electrodes-electrocatalytic-001368nas a2200241 4500008004100000022001400041245020500055210006900260260010600329300001200435490000700447520035200454653000800806653002100814653002800835653001500863653003000878100002000908700002300928700002600951700002300977856012601000 2013 eng d a0277-538700aSynthesis and X-ray single crystal structure of a cadmium(II) acetophenone thiosemicarbazone complex and its use as a single-source precursor for the preparation of CdS nanocrystallites and thin films0 aSynthesis and Xray single crystal structure of a cadmiumII aceto aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLANDbPERGAMON-ELSEVIER SCIENCE LTDcSEP a195-2010 v613 a

{A cadmium(II) acetophenone thiosemicarbazone complex has been prepared and characterized by elemental analysis, infrared and nuclear magnetic resonance (H-1 and C-13{H-1}) spectroscopic techniques. Its single crystal structure has also been determined. The compound is found to be monoclinic, space group C2/c, with a = 12.1020(3) angstrom

10aCdS10aNanocrystallites10aSingle source precursor10aThin films10aThiosemicarbazone complex1 aPalve, Anil, M.1 aJoshi, Pranaya, V.1 aPuranik, Vedavati, G.1 aGarje, Shivram, S. uhttp://library.ncl.res.in/content/synthesis-and-x-ray-single-crystal-structure-cadmiumii-acetophenone-thiosemicarbazone-002604nas a2200265 4500008004100000022001400041245018700055210006900242260006900311300001200380490000800392520159400400653002401994653002602018653001202044653001502056100001902071700001902090700002402109700002102133700001802154700001802172700001802190856013002208 2014 eng d a0254-058400aPoly (3,4-ethylenedioxythiophene) (PEDOT) and poly (3,4-ethylenedioxythiophene)-few walled carbon nanotube (PEDOT-FWCNT) nanocomposite based thin films for Schottky diode application0 aPoly 34ethylenedioxythiophene PEDOT and poly 34ethylenedioxythio aPO BOX 564, 1001 LAUSANNE, SWITZERLANDbELSEVIER SCIENCE SAcOCT a867-8770 v1473 a

Transparent, conductive films of poly (3,4-ethylenedioxythiophene) (PEDOT) and poly (3,4-ethylenedioxythiophene)-few walled carbon nanotube (PEDOT-FWCNT) nanocomposite were synthesized by in-situ oxidative polymerization and investigated for their Schottky diode property. The prepared films were characterized by UV-Vis spectroscopy, thermal gravimetric analysis (TGA), surface resistivity, cyclic voltametery, scanning electron microscopy (SEM) and high resolution transmission electron microscopy (HRTEM). SEM reveals the formation of homogeneous and adhesive polymer films while HRTEM confirms the uniform wrapping of polymer chains around the nanotube walls for PEDOT-FWCNT film. Improved thermal stability, conductivity and charge storage property of PEDOT in the presence of FWCNT is observed. Among different compositions, 5 wt. % of FWCNT is found to be optimum with sheet resistance and transmittance of 500 Omega sq(-1) and 77%, respectively. Moreover, the electronic and junction properties of polymer films were studied and compared by fabricating sandwich type devices with a configuration of Al/PEDOT or PEDOT-FWCNT nanocomposite/indium tin oxide (ITO) coated glass. The measured current density-voltage characteristics show typical rectifying behavior for both configurations. However, enhanced rectification ratio and higher forward current density is observed in case of PEDOT-FWCNT based Schottky diode. Furthermore, reliability test depicts smaller hysteresis effect and better performance of PEDOT-FWCNT based diodes. (C) 2014 Elsevier B.V. All rights reserved.

10aComposite materials10aElectrical properties10aPolymer10aThin films1 aGupta, Bhavana1 aMehta, Minisha1 aMelvin, Ambrose, A.1 aKamalakannan, R.1 aDash, Sitaram1 aKamruddin, M.1 aTyagi, A., K. uhttp://library.ncl.res.in/content/poly-34-ethylenedioxythiophene-pedot-and-poly-34-ethylenedioxythiophene-few-walled-carbon-002445nas a2200325 4500008004100000022001400041245015900055210006900214260005700283300001400340490000800354520126400362653003101626653002801657653001301685653001501698653001601713653001801729653002701747653001501774100002801789700002101817700002701838700002401865700002401889700002601913700002601939700002501965856012901990 2014 eng d a0303-402X00aStudies on morphology of polyaniline films formed at liquid-liquid and solid-liquid interfaces at 25 and 5 A degrees C, respectively, and effect of doping0 aStudies on morphology of polyaniline films formed at liquidliqui a233 SPRING ST, NEW YORK, NY 10013 USAbSPRINGERcMAY a1079-10890 v2923 a

It is well accepted that the morphology of the nanomaterials has great effect on the properties and hence their applications. Therefore, morphology of materials has become a focus of research in the scientific world. The present study shows that interfacial polymerization and subsequent self-assembly provides a control over the morphology, nanorod/nanosheet, of polyaniline (PANI) films synthesized by liquid-liquid interface reaction technique and solid-liquid interface reaction technique. The synthesized PANI films and its particulate structure are characterized by using various spectroscopic techniques such as UV-visible, ATR-IR, Raman and XPS. The study confirmed the formation, the structure, the size and shape of particles and morphology of PANI by using analytical techniques namely, SAED, SEM and TEM. An important observation is that doping with HCl significantly improves the nanorod formation at the interface. The doped PANI electrode exhibits a higher area with rectangular shape in CV cycle and better cycle stability when compared with the performance of undoped PANI films. We believe that the results of these studies can give valuable leads to manoeuvre formation of PANI films with desired morphology for various applications.

10ainterfacial polymerization10aLiquid-liquid interface10aNanorods10ananosheets10apolyaniline10aSelf-assembly10aSolid-liquid interface10aThin films1 aWaghmode, Babasaheb, J.1 aPatil, Sagar, H.1 aJahagirdar, Mandar, M.1 aPatil, Virendra, S.1 aWaichal, Rupali, P.1 aMalkhede, Dipalee, D.1 aSathaye, Shivaram, D.1 aPatil, Kashinath, R. uhttp://library.ncl.res.in/content/studies-morphology-polyaniline-films-formed-liquid-liquid-and-solid-liquid-interfaces-25-001769nas a2200205 4500008004100000022001400041245011600055210006900171260006500240300000800305490000700313520097500320653002301295653002001318653000901338653001501347100003701362700003601399856012801435 2016 eng d a1420-304900aGold incorporated mesoporous silica thin film model surface as a robust SERS and catalytically active substrate0 aGold incorporated mesoporous silica thin film model surface as a aST ALBAN-ANLAGE 66, CH-4052 BASEL, SWITZERLANDbMDPI AGcMAY a6670 v213 a

Ultra-small gold nanoparticles incorporated in mesoporous silica thin films with accessible pore channels perpendicular to the substrate are prepared by a modified sol-gel method. The simple and easy spin coating technique is applied here to make homogeneous thin films. The surface characterization using FESEM shows crack-free films with a perpendicular pore arrangement. The applicability of these thin films as catalysts as well as a robust SERS active substrate for model catalysis study is tested. Compared to bare silica film our gold incorporated silica, GSM-23F gave an enhancement factor of 10(3) for RhB with a laser source 633 nm. The reduction reaction of p-nitrophenol with sodium borohydride from our thin films shows a decrease in peak intensity corresponding to -NO2 group as time proceeds, confirming the catalytic activity. Such model surfaces can potentially bridge the material gap between a real catalytic system and surface science studies.

10agold nanoparticles10amodel catalysis10aSERS10aThin films1 aSekhar, Anandakumari, Chandrasek1 aVinod, Chathakudath, Prabhakara uhttp://library.ncl.res.in/content/gold-incorporated-mesoporous-silica-thin-film-model-surface-robust-sers-and-catalytically02225nas a2200241 4500008004100000022001400041245014000055210006900195260000800264300001200272490000600284520138100290653001501671653001901686653001501705100002801720700001801748700002101766700002401787700002401811700002301835856012501858 2017 eng d a2365-654900aExtraction of the very high tunneling current and extremely stable emission current from GdB6/W-tip source synthesized using arc plasma0 aExtraction of the very high tunneling current and extremely stab cJAN a562-5660 v23 a

Herein, we report the one step arc plasma synthesis of the GdB6 (Gadolinium hexaboride) nanoparticles and its field emission (FE) characteristics on tungsten point substrate (GdB6/ W). The SEM /TEM analysis revealed the GdB6 nanoparticles on W point substrate exhibit irregular shaped, grainy, dense, course morphology, i.e. uniformly covering the entire tip substrate surface. For GdB6/W point source, the values of the turn-on and threshold fields, defined as field required to draw an emission current density similar to 1 mA/cm(2) and similar to 100 mA/cm(2), respectively are found to be similar to 2.2 and similar to 2.7 V/mm, for anodecathode separation of similar to 1 mm. Interestingly, a very high emission current density of similar to 3.5 A/cm(2) has been drawn from the GdB6/W point emitter at relatively lower applied field of similar to 6.4 V/mm. The field enhancement factor found to be similar to 10,250. The GdB6/W point electron source exhibits a good emission current stability at similar to 10 mA for a period of 6 hr. The emission current stability is enumerated in terms of standard deviation and its magnitude has been measured to be only 1.72% with respect to the average value. The superlative field emission characteristics signify the GdB6/W point electron source as potential candidates for vacuum micro/nanoelectronics device applications.

10aArc Plasma10afield emission10aThin films1 aSuryawanshi, Sachin, R.1 aKanhe, Nilesh1 aMathe, Vikas, L.1 aPhase, Deodatta, M.1 aLate, Dattatray, J.1 aMore, Mahendra, A. uhttp://library.ncl.res.in/content/extraction-very-high-tunneling-current-and-extremely-stable-emission-current-gdb6w-tip02209nas a2200277 4500008004100000022001300041245014900054210006900203260000900272300001600281490000600297520121800303653003101521653003401552653001801586653003701604653001301641653001301654653002201667653002201689653001501711653002301726100002201749700003101771856012901802 2018 eng d a2470134300aSurface modification of polymers for tissue engineering applications: arginine acts as a sticky protein equivalent for viable cell accommodation0 aSurface modification of polymers for tissue engineering applicat cAPR  a4242–42510 v33 a

Hydrophobic polymers, for their favorable mechanical properties, are a popular choice as permanent bioimplants. These materials remain absolutely bioinert for years, but throw up challenges when it comes to fast integration with healthy tissue. Addressing this, herein, we present a surface-modification technique of converting the hydrophobic surface of a polymeric film into a hydrophilic one using a layer-by-layer assembly process involving gold nanoparticles and small molecules like amino acids. These films showed much improved animal cell (murine fibroblast) adherence properties compared to commercially available tissue culture plates. Moreover, arginine-modified films exhibited a nearly equivalent cell viability compared to the films modified with the natural extracellular matrix component fibronectin. The surface hydrophilicity and roughness of our novel film were characterized by contact angle measurement and atomic force microscopy. Cell counting, fluorescence microscopy, cell viability, and collagen estimation assay were employed to demonstrate that our film favored a much improved cell adherence, and accommodation in comparison to the commercially available tissue culture plates.

10aCell and Molecular biology10aExtracellular matrix proteins10aNanoparticles10aPhysical and chemical properties10aPolymers10aProteins10aSurface structure10aSurface treatment10aThin films10atissue engineering1 aSengupta, Poulomi1 aPrasad, Bhagavatula, L. V. uhttp://library.ncl.res.in/content/surface-modification-polymers-tissue-engineering-applications-arginine-acts-sticky-protein02380nas a2200277 4500008004100000022001400041245008600055210006900141260000800210300001100218490000800229520153500237653001801772653001301790653001101803653001501814653001801829653002301847100001901870700002201889700001801911700001701929700001701946700002501963856011401988 2025 eng d a0141-813000aSustainable UV absorbing bio-plastic films by valorisation of humins and chitosan0 aSustainable UV absorbing bioplastic films by valorisation of hum cJUN a1437100 v3113 a

Humins, an inevitable bio-refinery waste by-product of sugar dehydration have been efficiently utilized for the first time for developing biodegradable thin films for UV shielding. The films were prepared from chitosan, and humins, a novel combination, aiming towards simultaneous utilization of marine and bio-refinery waste, rendering simple, effective, robust UV absorbing films. The structure-activity relationship of these films were elucidated with the help of different analytical techniques like X-ray diffraction, Fourier transform infrared spectroscopy, Thermogravimetric analysis, UV-vis spectroscopy, Atomic force microscopy, Scanning electron microscopy, Tensile testing, Contact angle measurements and water absorption studies. Intrinsic biodegradability was studied using fungi i.e. Aspergillus niger. Different feedstocks (corncob, rice husk, glucose and xylose) were explored for generating humins. Amongst them, humins derived from xylose were utilized for the preparation of the bio-plastic films of chitosan. The results revealed that, addition of 5.0 % humins was observed to be an optimum concentration yielding films with excellent UV absorption, mechanical properties, and biodegradability. The current work is in perfect alignment with sustainability and green chemistry as it ameliorates waste valorization (lignocellulosic and marine altogether). Further, its innovation stems from the first-hand use of humins for UV absorption, novel combination of biopolymers, use of green raw materials.

10abiodegradable10aChitosan10aHumins10aThin films10aUV absorption10aWaste valorization1 aLucas, Nishita1 aTambe, Snehal, S.1 aParate, Roopa1 aHengne, Amol1 aRode, C., V.1 aAthawale, Anjali, A. uhttp://library.ncl.res.in/content/sustainable-uv-absorbing-bio-plastic-films-valorisation-humins-and-chitosan