01920nas a2200229 4500008004100000022001400041245008800055210006900143260007300212300001200285490000800297520112800305653003001433653000901463653000901472653002501481653000801506100002501514700002001539700001901559856011201578 2005 eng d a0169-433200aDeposition of PTFE thin films by RF plasma sputtering on < 100 > silicon substrates0 aDeposition of PTFE thin films by RF plasma sputtering on 100 sil aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcMAY a202-2070 v2453 a

Polymers have been studied extensively due to the wonderful array of properties presented by them. Polymer materials can be coated/deposited by various techniques like sputtering (magnetron, ion beam, RF or dc), plasma polymerization, etc. and can be used in coatings, paint industries, etc. The present study deals with the RF sputter deposition of poly(tetrafluoro ethylene) (PTFE), commonly known as Teflon. Depositions were carried out on mirror polished silicon (1 0 0) substrates at different powers in the range of 100-200 W. The deposition time was kept constant at 60 min. The sputtered film shows lower contact angle of 50&DEG; with water and 44&DEG; with diiodomethane, a lower interfacial tension value of 0.76 dyne/cm, indicating hydrophilicity and good adhesion of the film with the substrate. FHR indicates presence of C-F, C-F-2 bonding groups in the deposited film. Further, XPS study shows presence of CF3 (292.2 eV), CF2 (290.8 eV), C-F (288.0 eV) and C-CF (286.4 eV) moieties indicating deposition of PTFE films at higher power levels of plasma. © 2004 Elsevier B.V. All rights reserved.

10aContact angle measurement10aFTIR10aPTFE10aRF plasma sputtering10aXPS1 aBodas, Dhananjay, S.1 aMandale, A., B.1 aGangal, S., A. uhttps://library.ncl.res.in/content/deposition-ptfe-thin-films-rf-plasma-sputtering-100-silicon-substrates-002946nas a2200241 4500008004100000022001400041245013500055210006900190260009500259300001200354490000800366520202500374653001302399653000902412653001902421653004502440653001102485100002002496700001402516700003002530700001502560856012902575 2005 eng d a0021-979700aPhase transfer of oleic acid capped NicoreAgshell nanoparticles assisted by the flexibility of oleic acid on the surface of silver0 aPhase transfer of oleic acid capped NicoreAgshell nanoparticles  a525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USAbACADEMIC PRESS INC ELSEVIER SCIENCEcMAR a422-4310 v2833 a

The phase transfer protocols in vogue for the oleic acid capped silver nanoparticles, viz., salt-induced precipitation and redispersion or phosphoric acid-induced method, are examined and compared thoroughly. A comprehensive evaluation with respect to the mechanistic aspects involved is made and the merits and demerits of the different procedures are delineated. It is found that the salt-induced precipitation and redispersion is more versatile in that the precipitate can actually be redispersed in both aqueous and organic media. However, in terms of mechanism both the routes seem to be very similar wherein the orientational change of oleic acid on the silver surface in the two different environments-organic and aqueous-plays a crucial role in the adaptability of the system to the different environments. Subsequently, this change of orientation of oleic acid on silver surface in aqueous and organic media has been utilized to phase transfer Ni-based nanoparticulate systems. The nascent oleic acid-capped Ni nanoparticles, which were synthesized by a foam-based protocol, were dispersible in water but not in nonpolar organic media such as cyclohexane or toluene. Then, just by coating a thin shell of silver on them we could achieve complete phase transfer of the NicoreAgshell from aqueous to organic media following similar procedures used for oleic acid-capped silver nanoparticles. Here, the phase transfer seems to be facilitated by the orientational flexibility of oleic acid on the silver surface as opposed to other metal surfaces as evidenced from the infrared and thermogravimetric analyses of oleic acid-capped Ni and NicoreAgshell nanoparticles. This orientation-assisted phase transfer method could be generalized and can be adapted to other systems where, if the nascent nanoparticles cannot be phase transferred as is, they can be coated by a silver shell and oleic acid making them suitable for dispersion in both aqueous and organic media. (C) 2004 Elsevier Inc. All rights reserved.

10a(1) HNMR10aFTIR10aPhase transfer10atransmetalation core-shell nanoparticles10aUV-Vis1 aBala, Tanushree1 aSwami, A.1 aPrasad, Bhagavatula L. V.1 aSastry, M. uhttps://library.ncl.res.in/content/phase-transfer-oleic-acid-capped-nicoreagshell-nanoparticles-assisted-flexibility-oleic-001771nas a2200253 4500008004100000022001400041245009900055210006900154260007300223300001400296490000700310520087300317653003001190653000901220653001301229653002501242653000801267100002201275700002501297700002001322700001901342700002601361856013001387 2006 eng d a0167-577X00aElectron beam induced surface cross-linking of functional monomers coated on silicon substrate0 aElectron beam induced surface crosslinking of functional monomer aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcMAY a1360-13650 v603 a

A 3: 1 composition of functional monomer: multifunctional acrylate was spin coated and later cross-linked under the influence of keV electron irradiation on the surface of silicon to generate a surface-anchored cross-linked network bearing functional moieties. Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) as well as wetting angle measurements were used for the analysis of functional monomer cross-linked surfaces. Results of the surface reconstruction of surfaces and electron irradiated on coated silicon wafers reveal that long-term hydrophilic surfaces can be achieved. Thus, the surface architecture can be favorably manipulated by using this remarkable technique with a Suitable combination of functional monomers and cross-linkers. (c) 2005 Elsevier B.V. All rights reserved.

10aelectron beam irradiation10aFTIR10aPolymers10asurface modification10aXPS1 aMahapatra, S., K.1 aBodas, Dhananjay, S.1 aMandale, A., B.1 aGangal, S., A.1 aBhoraskar, Vasant, N. uhttps://library.ncl.res.in/content/electron-beam-induced-surface-cross-linking-functional-monomers-coated-silicon-substrate-002409nas a2200289 4500008004100000022001400041245009300055210006900148260009200217300001200309490000800321520145200329653001801781653001501799653000801814653000901822653001401831653000801845653001601853653000801869100003001877700002001907700002201927700002001949700002601969856012401995 2006 eng d a1042-015000aIrradiation effects of 12 eV oxygen ions on polyimide and fluorinated ethylene propylene0 aIrradiation effects of 12 eV oxygen ions on polyimide and fluori a4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLANDbTAYLOR & FRANCIS LTDcAUG a495-5040 v1613 a

Polyimide (PI) and Fluorinated Ethylene Propylene (FEP) samples (15mm x 15mm x 50 mu m ) were exposed to atomic oxygen ions of average energy similar to 12 eV and flux similar to 5x10(13) ions cm(-2) s(-1) , produced in the Electron Cyclotron Resonance (ECR) plasma. The energy and the flux of the oxygen ions at different positions in the plasma were measured by a retarding field analyzer. The fluence of the oxygen ions was varied from sample to sample in the range of similar to 5x10(16) to 2x10(17) ions cm(-2) by changing the irradiation period. The pre- and the post-irradiated samples were characterized by the weight loss, Scanning Electron Microscopy (SEM), X-ray Photoelectron Spectroscopy (XPS), and Fourier Transform Infrared (FTIR) techniques. The weight of the PI and FEP samples decreased with increasing the ion fluence. However, the erosion yield for the PI is found to be higher, by almost a factor five, when compared with that of FEP. On the surface region of irradiated samples, the concentrations of the carbon, fluorine, and oxygen and their corresponding chemical bonds have changed appreciably. Moreover, blisters and nanoglobules were also observed even at a fluence of similar to 10(17) ions cm(-2) . This oxygen ion fluence is almost two orders of magnitude lower than that of the 5 eV atomic oxygen, which a satellite encounters in the space, at the low Earth orbit, during its mission period of about 7 years.

10aatomic oxygen10aECR plasma10aFEP10aFTIR10aPolyimide10aSEM10aweight loss10aXPS1 aMajeed, Riyadh, M A Abdul1 aPurohit, V., S.1 aBhoraskar, S., V.1 aMandale, A., B.1 aBhoraskar, Vasant, N. uhttps://library.ncl.res.in/content/irradiation-effects-12-ev-oxygen-ions-polyimide-and-fluorinated-ethylene-propylene-001361nas a2200241 4500008004100000022001400041245006700055210006600122260010700188300001200295490000700307520060100314653001400915653000900929653001100938653000800949653001400957653001100971653001000982653000800992100002001000856009901020 2007 eng d a0970-707700aSynthesis and MASNMR characterization of VPI-5 molecular sieve0 aSynthesis and MASNMR characterization of VPI5 molecular sieve a11/100 RAJENDRA NAGAR, SECTOR 3,, SAHIBABAD 201 005, GHAZIABAD, INDIAbASIAN JOURNAL OF CHEMISTRYcFEB a347-3530 v193 a

The synthesized VPI-5 sample was characterized by XRD, SEM, FTIR, TG/DTA, Al-27, P-31 and 3Q MASNMR techniques, which shows that the sample was highly crystalline. Carbon and nitrogen analysis reveals that the sample contains no template molecules; however, TG/DTA analysis shows the presence of physisorbed template molecules. MASNMR results show the presence of two different types of aluminium and phosphorus, 3Q MASNMR shows the presence of two types of environmentally different tetrahedral aluminium, which are not observable by ordinary MASNMR along with known octahedral aluminium.

10a3Q-MASNMR10aFTIR10aMASNMR10aSEM10asynthesis10aTG/DTA10aVPI-510aXRD1 aVenkatathri, N. uhttps://library.ncl.res.in/content/synthesis-and-masnmr-characterization-vpi-5-molecular-sieve02028nas a2200253 4500008004100000022001400041245010000055210006900155260006800224300001200292490000800304520116300312653001301475653002401488653000901512653001901521653001401540100002401554700001801578700002001596700001801616700002001634856012001654 2007 eng d a0021-899500aUse of poly(o-toluidine)/ZrO2 nanocomposite coatings for the corrosion protection of mild steel0 aUse of polyotoluidineZrO2 nanocomposite coatings for the corrosi a111 RIVER ST, HOBOKEN, NJ 07030 USAbJOHN WILEY & SONS INCcOCT a220-2290 v1063 a

This study explored the possibility of using poly(o-toluidine) (POT)/ZrO2 nanocomposite coatings for the corrosion protection of mild steel in a chloride environment. POT/ZrO2 nanocomposite coatings were synthesized on steel substrates through an electrochemical route. These coatings were characterized with cyclic voltammetry, ultraviolet-visible absorption spectroscopy, Fourier transform infrared spectroscopy, scanning electron microscopy, and X-ray photoelectron spectroscopy. The performance of POT/ZrO2 nanocomposites as protective coatings against the corrosion of mild steel in aqueous 3 wt % NaCl was evaluated with the potentiodynamic polarization technique and electrochemical impedance spectroscopy. The results of this study demonstrate that POT/ZrO2 nanocomposite coatings provide better protection for mild steel against corrosion than pure POT coatings. The corrosion potential was about 0.312 V versus a saturated calomel electrode, more positive in aqueous 3 wt % NaCl for the nanocomposite-coated steel than the uncoated steel, and the corrosion rate of steel was reduced by a factor of almost 51. (c) 2007 Wiley Periodicals, Inc.

10aCoatings10aconjugated polymers10aFTIR10aNanocomposites10asynthesis1 aChaudhari, Sudeshna1 aPatil, P., P.1 aMandale, A., B.1 aPatil, K., R.1 aSainkar, S., R. uhttps://library.ncl.res.in/content/use-polyo-toluidinezro2-nanocomposite-coatings-corrosion-protection-mild-steel-001866nas a2200229 4500008004100000022001400041245011100055210006900166260007300235300001400308490000700322520103200329653000901361653001001370653002301380653001801403100002201421700002101443700002001464700002101484856013101505 2011 eng d a0167-577X00aNovel route for rapid biosynthesis of lead nanoparticles using aqueous extract of Jatropha curcas L. latex0 aNovel route for rapid biosynthesis of lead nanoparticles using a aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcOCT a3170-31720 v653 a

We are reporting a novel, low-cost and eco-friendly route for rapid synthesis of lead nanoparticles by using 0.5% aqueous extract of Jatropha curcas L latex. Lead nanoparticles were characterized initially by UV-vis spectroscopy and shown distinct peak at 218 nm. This peak was highly specific for lead nanoparticles. Formation of Pb (0) was confirmed by X-ray diffraction technique (XRD).Transmission electron microscopy (TEM) was performed for estimating the size and shape of nanoparticles. The average size of lead nanoparticles was found to be in the range of 10 to 12.5 nm. Energy dispersive analysis of X-rays (EDAX) showed distinct peaks of lead. Fourier Transform Infrared Spectroscopy (FTIR) were performed to find the role of cyclic peptides namely curcacycline A (an octapeptide) and curcacycline B (a nonapeptide) as a possible reducing and capping agents present in the latex of Jatropha curcas L. Lead nanoparticles formed by the above method were monodisperse. (C) 2011 Elsevier B.V. All rights reserved.

10aFTIR10aLatex10aLead nanoparticles10aNanoparticles1 aJoglekar, Shriram1 aKodam, Kisan, M.1 aDhaygude, Mayur1 aHudlikar, Manish uhttps://library.ncl.res.in/content/novel-route-rapid-biosynthesis-lead-nanoparticles-using-aqueous-extract-jatropha-curcas-l-002318nas a2200277 4500008004100000022001400041245015400055210006900209260007300278300001200351490000700363520129900370653001801669653002501687653000901712653001001721653001601731653003801747100002001785700002501805700002001830700002201850700002101872700002101893856012601914 2012 eng d a0927-776500aNovel route for rapid biosynthesis of copper nanoparticles using aqueous extract of Calotropis procera L. latex and their cytotoxicity on tumor cells0 aNovel route for rapid biosynthesis of copper nanoparticles using aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcJUN a284-2880 v953 a

This paper accounts for novel, low-cost, eco-friendly route for rapid biosynthesis of copper nanoparticles. Cysteine proteases present in the latex of Calotropis procera L. were used to fabricate copper nanoparticles from copper acetate. Copper nanoparticles were initially characterized by transmission electron microscopy (TEM) and X-ray diffraction technique (XRD). Transmission electron microscopy (TEM) was used to estimate the size and shape of nanoparticles. The average size of copper nanoparticles was found to be 15 +/- 1.7 nm. Energy dispersive analysis of X-rays (EDAX) showed distinct peaks of copper. Fourier transform infrared spectroscopy (FTIR) was performed to confirm capping behavior of the latex proteins that contributed to long term stability of copper nanoparticles (6 months) in aqueous medium. Copper nanoparticles synthesized by above method were monodisperse type. Cytotoxicity studies of latex stabilized copper nanoparticles were carried out on HeLa, A549 and BHK21 cell lines by MTT dye conversion assay. HeLa, A549 and BHK21 cells showed excellent viability even at 120 mu M concentration of copper nanoparticles. This shows that copper nanoparticles synthesized by above method hold excellent biocompatibility. (C) 2012 Elsevier B.V. All rights reserved.

10aBiocompatible10aCopper nanoparticles10aFTIR10aLatex10aTumor cells10aX-ray diffraction technique (XRD)1 aHarne, Shrikant1 aSharma, Ashwinikumar1 aDhaygude, Mayur1 aJoglekar, Shriram1 aKodam, Kisan, M.1 aHudlikar, Manish uhttps://library.ncl.res.in/content/novel-route-rapid-biosynthesis-copper-nanoparticles-using-aqueous-extract-calotropis-001743nas a2200241 4500008004100000022001400041245008400055210006900139260007300208300000800281490000800289520094500297653000901242653001701251653001801268653002601286653001401312653000801326100001301334700001901347700002101366856011401387 2013 eng d a0167-577X00aPhytosynthesis of silver nanoparticles by semecarpus anacardium L. leaf extract0 aPhytosynthesis of silver nanoparticles by semecarpus anacardium  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcJUL a5-70 v1023 a

Green synthesis of silver nanoparticles (AgNPs) using Semecmpus anacardium L leaf extract was studied. The reduction of silver (Ag+) ions was characterized by using UV-vis spectrophotometer showing formation of AgNPs within 15-20 mm. A time dependent reaction showed the increase in the nanoparticles (NPs) with time. Transmission electron microscopy (TEM) analysis showed that the synthesized AgNPs varied from 10 to 25 nm and has spherical shape. The Fourier transform infrared (FTIR) analysis showed that phenols and protein were responsible for the formation of the AgNPs. The energy dispersive spectroscopy (EDAX) analysis confirms the formed NPs were of silver. The quantification of AgNPs was studied by inductive coupled plasma spectrometry (ICP-AES). The important outcome of this work can be value addition to the medicinal plants in synthesis of NPs for biomedical applications. (C) 2013 Elsevier B.V. All rights reserved.

10aFTIR10aLeaf extract10aNanoparticles10aSemecarpus anacardium10asynthesis10aTEM1 aRaju, D.1 aHazra, Sulekha1 aMehta, Urmil, J. uhttps://library.ncl.res.in/content/phytosynthesis-silver-nanoparticles-semecarpus-anacardium-l-leaf-extract-001969nas a2200229 4500008004100000022001400041245013600055210006900191260010500260300001400365490000700379520107300386653001601459653000901475653002001484653002201504653000801526100002801534700002101562700002701583856012901610 2015 eng d a0256-111500aEfficient sorption and photocatalytic degradation of malachite green dye onto NiS nanoparticles prepared using novel green approach0 aEfficient sorption and photocatalytic degradation of malachite g aF.5, 119, ANAM-RO, SEONGBUK-GU, SEOUL 136-075, SOUTH KOREAbKOREAN INSTITUTE CHEMICAL ENGINEERScOCT a1986-19920 v323 a

The extract of the Asparagus racemosus leaf tissue works as a stabilizing and capping agent and assists the formation of stable colloidal nanoparticles. Nanoparticles were characterized using UV-vis spectrophotometer, photoluminescence, TEM, EDAX and XRD, respectively. Transmission electron microscopy followed by selected area electron diffraction pattern analysis indicated the formation of near spherical, polydispersed, crystalline NiS of diameter ranging from 4-27 nm. X-ray diffraction studies showed the formation of 110, 101, 300, 021, 220, 221, 131, 410, 401, 321, 330 and 021 planes of hexagonal NiS. EDAX analysis confirmed the presence of Ni and S in nanosphere. The maximum sorption capacity (q (m) ) of NiS nanoparticles for MG dye was found to be 64.85 mg/g. Decolorization as well as disintegration of malachite green under white light illumination was confirmed by LC-MS studies. Results of the present study suggest that nanosized NiS can play an instrumental role in photocatalytic degradation of malachite green dye present in water bodies.

10aDegradation10aFTIR10aMalachite Green10aNiS Nanoparticles10aTEM1 aPrasad, Kumar, Suranjit1 aPrajapati, Sheel1 aSelvaraj, Kaliaperumal uhttps://library.ncl.res.in/content/efficient-sorption-and-photocatalytic-degradation-malachite-green-dye-nis-nanoparticles-002150nas a2200205 4500008004100000020002200041245013100063210006900194260023600263520118000499653001901679653000901698653001601707653001001723100002201733700002401755700001901779700001701798856012901815 2016 eng d a978-1-5090-2419-300aField emission investigation of composites of polypyrrole with graphene oxide, reduced graphene oxide and graphene nanoribbons0 aField emission investigation of composites of polypyrrole with g a345 E 47th St, New York,NY 10017 USAbIEEE; IEEE Electron Devices Soc; ZEISS; Modern Electron; Amer Vacuum Soci; Paul Scherrer Inst; Elect & Comp Engn; Univ British Columbia, Peter Wall Inst Adv Studies; Dept Elect & Comp EngncJUL3 a

The monomer pyrrole has been polymerized by chemical route in the presence of graphene oxide (GO), reduced graphene oxide (rGO) and graphene nanoribbons (GNR) separately to prepare nanocomposites as Polypyrrole-GO (PGO), PPy-rGO (PRGO), PPy-GNR (PGNR), respectively. The morphological, chemical and structural characterization of the as-synthesized products was carried out using scanning electron microscopy (SEM), Raman and fourier transform infrared (FTIR) spectroscopy. Field emission (FE) studies of PGO, PRGO, PGNR emitters were performed at the base pressure of 1x10(-8) mbar in planar `diode' configuration. Onset and threshold field values corresponding to emission current densities of 1 and 100 mu A/cm(2) are observed to be 1.5 and 2.3V/mu m for PGO, 1.4 and 2.2 V/mu m for PRGO and lowest for PGNR as 0.9 and 1.2V/mu m, respectively. The maximum emission current density of 2.5 mA/cm(2) drawn for PGO at the applied electric field of 3.2V/mu m, 1.2 mA/cm(2) at 3.6V/mu m from the PRGO and 8 mA/cm(2) at the field of 2.2 V/mu m from the PGNR emitters. An emission current versus time (I-t) plot shows stable emission behavior for the preset current values.

10afield emission10aFTIR10apolypyrrole10aRaman1 aHarpale, Kashmira1 aBansode, Sanjeewani1 aMore, Mahendra1 aLate, D., J. uhttps://library.ncl.res.in/content/field-emission-investigation-composites-polypyrrole-graphene-oxide-reduced-graphene-oxide