02027nas a2200229   4500008004100000245012300041210006900164260000800233300001600241490000600257520120000263100002201463700001701485700002301502700002301525700002101548700002201569700002401591700002501615700002501640856013201665       2016                        eng d00aPromising field electron emission performance of vertically aligned one dimensional (1D) brookite (beta) TiO2 nanorods0 aPromising field electron emission performance of vertically alig  cOCT  a98722-987290 v63 aWe evidence field-electron emission (FE) studies on the large-area array of one-dimensional (1D) brookite (beta) TiO2 nanorods. The pure 1D beta-TiO2 nanorods of 10 nm width and 760 nm long were synthesized on Si substrate utilizing hot-filament metal vapor deposition technique. X-ray diffraction (XRD) and transmission electron microscopy (TEM) analysis evidenced the beta-TiO2 nanorods to be composed of orthorhombic crystals in brookite (beta) phase. X-ray photoemission spectroscopy (XPS) revealed the formation of pure stoichiometric (i.e. 1 : 1.98) 1D TiO2 nanorods. The values of turn-on field, required to draw current density of 10 mA cm(-2), was observed 3.9 V mu m(-1) for pristine 1D beta-TiO2 nanorods emitters, which were found significantly lower than doped/undoped 1D TiO2 nanostructures (i.e. nanotubes, nanowires, nanorods) based field emitters. The enhanced FE behavior of the TiO2/Si emitter can be attributed to modulation of electronic properties due to the high aspect ratio of vertically aligned TiO2 nanorods. Furthermore, the orthodox emission situation of pristine TiO2/Si emitters exhibit good emission stability and reveal their potentials as promising FE material.1 aDevan, Rupesh, S.1 aMa, Yuan-Ron1 aMore, Mahendra, A.1 aKhare, Ruchita, T.1 aAntad, Vivek, V.1 aPatil, Ranjit, A.1 aThakare, Vishal, P.1 aDhayal, Rajendra, S.1 aSchmidt-Mende, Lukas  uhttps://library.ncl.res.in/content/promising-field-electron-emission-performance-vertically-aligned-one-dimensional-1d-brookite02491nas a2200241   4500008004100000245013800041210006900179260000800248300001600256490000600272520161700278100002201895700002401917700002101941700002901962700002301991700001902014700002502033700002302058700001702081700002502098856012602123       2017                        eng d00aNano-heteroarchitectures of two-dimensional MoS 2 @ one-dimensional brookite TiO 2 nanorods: prominent electron emitters for displays0 aNanoheteroarchitectures of twodimensional MoS 2 onedimensional b  cJUN  a2925−29340 v23 a<p>We report comparative field electron emission (FE) studies on a large-area array of two-dimensional MoS2-coated @ one-dimensional (1D) brookite (β) TiO2 nanorods synthesized on Si substrate utilizing hot-filament metal vapor deposition technique and pulsed laser deposition method, independently. The 10 nm wide and 760 nm long 1D β-TiO2 nanorods were coated with MoS2 layers of thickness ∼4 (±2), 20 (±3), and 40 (±3) nm. The turn-on field (Eon) of 2.5 V/μm required to a draw current density of 10 μA/cm² observed for MoS2-coated 1D β-TiO2 nanorods emitters is significantly lower than that of doped/undoped 1D TiO2 nanostructures, pristine MoS2 sheets, MoS2@SnO2, and TiO2@MoS2 heterostructure-based field emitters. The orthodoxy test confirms the viability of the field emission measurements, specifically field enhancement factor (βFE) of the MoS2@TiO2/Si emitters. The enhanced FE behavior of the MoS2@TiO2/Si emitter can be attributed to the modulation of the electronic properties due to heterostructure and interface effects, in addition to the high aspect ratio of the vertically aligned TiO2 nanorods. Furthermore, these MoS2@TiO2/Si emitters exhibit better emission stability. The results obtained herein suggest that the heteroarchitecture of MoS2@β-TiO2 nanorods holds the potential for their applications in FE-based nanoelectronic devices such as displays and electron sources. Moreover, the strategy employed here to enhance the FE behavior via rational design of heteroarchitecture structure can be further extended to improve other functionalities of various nanomaterials.</p>1 aDevan, Rupesh, S.1 aThakare, Vishal, P.1 aAntad, Vivek, V.1 aChikate, Parameshwar, R.1 aKhare, Ruchita, T.1 aMore, Mahendra1 aDhayal, Rajendra, S.1 aPatil, Shankar, I.1 aMa, Yuan-Ron1 aSchmidt-Mende, Lukas  uhttps://library.ncl.res.in/content/nano-heteroarchitectures-two-dimensional-mos-2-one-dimensional-brookite-tio-2-nanorods02634nas a2200229   4500008004100000022001400041245013300055210006900188260000800257300001200265490000800277520185100285100002402136700002302160700002102183700002102204700001702225700001702242700002202259700000502281856011802286       2018                        eng d  a0169-433200aControlled surface/interface structure and spin enabled superior properties and biocompatibility of cobalt ferrite nanoparticles0 aControlled surfaceinterface structure and spin enabled superior   cNOV  a788-8010 v4593 aHigh quality, crystalline, well-dispersed, and stable magnetic oxide nanoparticles (NPs) of inverse spinel cobalt ferrite (CoFe2O4; CFO) were prepared by a facile, reproducible, and simple hydrothermal route. The transmission electron microscopy, small-angle scattering and X-ray diffraction analyses demonstrate the structural quality of CFO NPs with a controlled size of similar to 12 nm. Small-angle scattering experiments demonstrate that the pristine CFO NPs have the individual size similar to 8.5 nm and spherical shape. The Raman and infrared spectroscopic measurements further confirm their high chemical quality and cubic symmetry. CFO NPs exhibit a remarkable, maximum coercivity (H-c) value of 18.92 kOe, which is the highest value achieved to date. Surface spins and spins canting along with a weak dipolar interaction accounts for the giant H-c and large effective anisotropy (11.45 x 10(6) erg/cm(3)) of these CFO NPs. The magnetic grain size of NPs reveals that the canted surface spins exist around the magnetic particles. Reorientation of surface spins and interparticle interaction causes the jumping behaviour in M-H hysteresis loops at H = 0. The cell viability of CFO NPs against the cancer (cisplatin resistant ovarian cancer - A2780/CP70) was evaluated to determine their potential application in biomedicine and health science. The mild response of CFO NPs in terms of their anti-proliferative nature against cancer cells and negligible cytotoxicity suggests their human-safe-and-friendly nature which makes them suitable for biomedical/health-related applications. Assessment of toxicity toward human red blood cells (RBC) revealed that hemolysis is less than 5% compared to the positive control confirming the potential applications of CFO NPs targeting human cells and making relevant for adopting them in biomedicine.1 aAnsari, Sumayya, M.1 aSinha, Bhavesh, B.1 aPai, Kalpana, R.1 aBhat, Suresh, K.1 aMa, Yuan-Ron1 aSen, Debasis1 aKolekar, Yesh, D.1 a  uhttps://library.ncl.res.in/content/controlled-surfaceinterface-structure-and-spin-enabled-superior-properties-and