01477nas a2200157   4500008004100000245012800041210006900169260000800238300001200246490000600258520085800264100002101122700002401143700002601167856012601193       2016                        eng d00aClassification and study of near-surface region of active material for gas detection using x-ray photoelectron spectroscopy0 aClassification and study of nearsurface region of active materia  cJAN  a330-3360 v73 a<p>We report investigations on resistive material SnO2: Cu (9 wt. %) evaluated and optimized for the application of gas sensor. SnO2: Cu has been thoroughly characterized by using X-ray photoelectron spectroscopy (XPS). The deconvolution of XPS spectra confirms the existing surface reactive species in the form of states of the metal orbital and the presence of multiple pathways for the detection of CO vis-à-vis sintering temperature effect. Enhanced CO pickup at the sintering temperature of 650 0C (wide range and low sensitivity) and 750 0C (short range and high sensitivity) has been observed. The CO sensing and XPS data correlates well along with the nonconventional use of variation in average XPS background intensity of general scan seems to be related to optimized sensitivity conditions of various gases. Copyright © 2016 VBRI Press.</p>1 aMore, Pravin, S.1 aLate, Dattatray, J.1 aKondawar, Subhash, B.  uhttps://library.ncl.res.in/content/classification-and-study-near-surface-region-active-material-gas-detection-using-x-ray01448nas a2200157   4500008004100000245011600041210006900157260000800226300001000234490000800244520083200252100002601084700002601110700002401136856013001160       2018                        eng d00aBessel's polynomial fitting for electrospun polyacrylonitrile/polyaniline blend nanofibers based ammonia sensor0 aBessels polynomial fitting for electrospun polyacrylonitrilepoly  cJUL  a70-730 v2213 aIn the present paper, we report the fabrication of electrospun polyacrylonitrile/polyaniline (PAN/PANI) blend nanofibers by electrospinning and polymerization and Bessel's polynomial model applied for its ammonia sensing characteristics. As-fabricated PAN/PANI blend nanofibers were characterized by scanning electron microscopy and Fourier transform infrared spectroscopy for the confirmation of fibers with nanoscale and blends of PAN and PANI. The semiconducting behavior of the PAN/PANI blend nanofibers was found to respond quickly towards ammonia gas. Sensitivity of the blend was obtained at near room temperature for different concentrations of ammonia. Bessel's polynomial function was found to be well fitted with the experimental data for the response towards ammonia gas. (C) 2018 Elsevier B.V. All rights reserved.1 aAnwane, Rajashree, S.1 aKondawar, Subhash, B.1 aLate, Dattatray, J.  uhttps://library.ncl.res.in/content/bessels-polynomial-fitting-electrospun-polyacrylonitrilepolyaniline-blend-nanofibers-based01562nas a2200193   4500008004100000245013000041210006900171260001300240300000900253490000800262520082600270100002201096700002401118700002601142700002601168700002001194700002201214856013201236       2019                        eng d00aFacile process for ammonia sensing using electrospun polyvinylidene fluoride/polyaniline (PVDF/PANI) nanofibers chemiresister0 aFacile process for ammonia sensing using electrospun polyvinylid  bSpringer  a3-150 v2243 aElectrospun polyvinylidene fluoride/polyaniline (PVDF/PANI) nanofibers chemiresister was fabricated by electrospinning and polymerization. As-fabricated PVDF/PANI nanofibers chemiresister was characterized by SEM, FTIR, TGA and DTG analyses. Cost effective with high accuracy microcontroller based sensor set up was designed for the measurement of change in resistance of chemiresister with respect to different concentrations of ammonia gas at various temperatures. The semiconducting behavior of the chemiresister was found to respond quickly towards ammonia gas. High sensitivity, fast response and recovery of PVDF/PANI nanofibers for ammonia gas at room temperature confirmed the chemiresister as potential candidate for ammonia sensing in environmental monitoring safety systems, chemical and automotive industries.1 aKondawar, Sanchit1 aLate, Dattatray, J.1 aAnwane, Rajashree, S.1 aKondawar, Subhash, B.1 aKoinkar, Pankaj1 aParinov, Ivan, A.  uhttps://library.ncl.res.in/content/facile-process-ammonia-sensing-using-electrospun-polyvinylidene-fluoridepolyaniline-pvdfpani