Solution-processable, niobium-doped titanium oxide nanorods for application in low-voltage, large-area electronic devices

Abstract

Synthesis and characterization of surface-stabilised, niobium-doped titanium dioxide (Ni-TiO2) nanorods in a simple one-step reaction using oleic acid as both a stabilizer and solubilizing agent.

Polymer/TiO2 Nanorod Nanocomposite Optical Memristor Device

“…The test memristor devices consist of a uniform thin (200 nm) nanocomposite layer consisting of surface-stabilized titanium dioxide NRs (TiO 2 NRs) − uniformly dispersed within a commercially available (Sigma-Aldrich) and optically-active azobenzene polymer, that is, poly­(disperse red 1 acrylate) (PDR1A) sandwiched between a bottom ITO electrode and a top aluminum electrode, as shown in Figure a. The length and diameter of the titanium dioxide NRs (TiO 2 -NRs) are approximately 20 and 3 nm, respectively, as shown by the TEM image in Figure b, giving an aspect ratio of between 5 and 8, respectively.…”

“…The length and diameter of the titanium dioxide NRs (TiO 2 -NRs) are approximately 20 and 3 nm, respectively, as shown by the TEM image in Figure b, giving an aspect ratio of between 5 and 8, respectively. The synthesis, purification, and characterization of the surface-stabilized titanium dioxide NRs (TiO 2 NRs) has been reported previously. − The nanocomposite polymer film (PDR1A/TiO 2 -NRs) was deposited on the substrate surface from solution using a standard spin-coating process (1000 rpm for 30 s). The solution of PDR1A and TiO 2 NRs, used in the spin-coating process, was prepared by mixing a solution of PDR1A in tetrahydrofuran (5% weight/weight) with a solution of the TiO 2 -NRs in chloroform (1% weight/weight).…”

Method to reduce the formation of crystallites in ZnO nanorod thin-films grown via ultra-fast microwave heating

“…Solution-phase synthesis allows nanorods to be synthesized at much lower temperature (<200°C) and has as well advantages of low cost, high scalability and easier setup [20]. However, hydrothermal growth methods are often associated with long growth times, typically 10 hours or greater for high-quality nanowire growth using conventional hot-plate methods [4,7,21,23]. Recently, microwave heating has been shown to drastically reduce the growth duration to minutes whilst maintaining good film morphology and ZnO crystallinity [22][24] [25].…”

First high-pressure XAFS results at the bending-magnet-based energy-dispersive XAFS beamline BL-8 at the Indus-2 synchrotron facility

“…Nb-based materials are of scientific interest as a key trace element in Earth's evolutionary process (Sanloup et al, 2018) and multi-functionalities e.g. superconductors (Abud et al, 2017;Shimizu et al, 2018;Ishizu & Kitagawa, 2019;Guo et al, 2019), structural material (Jansto & Marquis, 2013), medical implants (Xu et al, 2013), catalysts (Ichikuni et al, 2016;Pinto et al, 2018), and electronic (Alharthi et al, 2018) and photonic devices (Sahiner et al, 2016). Multivalent states of Nb (Nb +2 /Nb +4 /Nb +5 ) present the scope for transition between oxidation states and structure under variable external conditions, including pressure (Filonenko & Zibrov, 2001;Tamura, 1972).…”