TiO 2 nanowires (NWs) have been synthesized by glancing angle deposition technique using e-beam evaporator. The average length 490 nm and diameter 80 nm of NWs were examined by field emission-scanning electron microscopy. Transmission electron microscopy emphasized that the NWs were widely dispersed at the top. X-ray diffraction has been carried out on the TiO 2 thin film (TF) and NW array. A small blue shift of 0.03 eV was observed in Photoluminescence (PL) main band emission for TiO 2 NW as compared to TiO 2 TF. The high temperature annealing at 980°C partially removed the oxygen vacancy from the sample, which was investigated by PL and optical absorption measurements. Copyright © 2012 American Scientific Publishers.

P CHINNAMUTHU

A MONDAL

N K SINGH

J C DHAR

S K DAS

University of Calcutta (informally known as Calcutta University or CU) is a collegiate public state university located in Kolkata, West Bengal, India.&nbsp;Within India it is recognized as a &quot;Five-Star University&quot; and accredited &quot;A&quot; Grade by National Assessment and Accreditation Council.

&nbsp;

The University of Calcutta has secured the Fifth position among the Universities of India in the prestigious &quot;Indian University Ranking 2019&quot; list, released by the NIRF of the Ministry of Human Resource Development, Government of India.

&nbsp;

It was established on 24 January 1857, and was one of the first institutions in Asia to be established as a multidisciplinary and Western-style university. Its alumni and faculty include several heads of state, heads of government, social reformers, prominent artists, only academy award winner and Dirac medal winner in India, many Fellows of the Royal Society and five Nobel laureates as of 2019 which is highest in South Asia.

University Of Calcutta

Journal of Nanoscience and Nanotechnology

The repair of critical bone loss remains a challenge to orthopaedic surgeons. Various artificial scaffolds have been intensively evaluated to provide an alternative solution for the repair and regeneration of bone defects; however, the inconsistent clinical performances of available materials have prompted the development of reactive 3D scaffolds for bone tissue engineering. We have studied the ability of a functionally designed 3D scaffold to bridge critical size defects and induce new bone formation in a New Zealand white rabbit tibial model, and have evaluated its ultra-structural properties using a combination of techniques, such as solid-state nuclear magnetic resonance (ssNMR), scanning electron microscopy (SEM), energy dispersive X-ray (EDX) and micro-computed tomography (μ-CT) with MIMICS® (Materialise's Interactive Medical Image Control System). ssNMR showed the structural similarity of the synthetic biomaterial to naturally occurring human bone. SEM studies showed an increase in Ca/P ratio with time, the progressively uniform distribution of elements in healed bones, and increased new bone formation, finally resembling native (intact) bone. μ-CT and MIMICS® demonstrated the pattern and morphology of new bone formed, with a noticeable shift in the HU unit towards compact bone, from week 2 to 25. The results suggest that in the critical size bone defect, the scaffold enhanced the formation of new bone having biomaterial composition, ultra-structure and quality resembling that of native bone, thus suggesting significant improvement in guided bone regeneration. This research provides a promising new avenue for orthopaedic implant design that safely biodegrades while promoting new bone growth. © 2016 The Royal Society of Chemistry.

RSC Advances

3D scaffold induces efficient bone repair:: In vivo studies of ultra-structural architecture at the interface

The glancing angle deposition technique has been employed to synthesize TiO 2 nanowire (NW) arrays which have been characterized by x-ray diffraction, field emission-scanning electron microscopy and high resolution transmission electron microscopy. Optical absorption measurements show the absorption edge at 3.42eV and 3.48eV for TiO 2 thin film (TF) and NW, respectively. The blue shift in absorption band is attributed to quantum confinement in NW structures. Photoluminescence measurement revealed oxygen-defect-related emission at 425nm (∼2.9eV). Ag/TiO 2 (NW) and Ag/TiO 2 (TF) contacts exhibit Schottky behaviour, and a higher turn-on voltage (∼6.5V) was observed for NW devices than that of TF devices (∼5.25V) under dark condition. In addition, TiO 2-NW-based devices show twofold improvement in photodetection efficiency in the UV region, compared with TiO 2-TF-based devices. © 2012 IOP Publishing Ltd.

Journal of Physics D: Applied Physics

Ultraviolet detection using TiO 2 nanowire array with Ag Schottky contact

Applied Catalysis B: Environmental

Silicon nanowire/TiO2 heterojunction arrays for effective photoelectrocatalysis under simulated solar light irradiation

Journal of the American Chemical Society

Growth of Oriented Single-Crystalline Rutile TiO2Nanorods on Transparent Conducting Substrates for Dye-Sensitized Solar Cells

Nano Letters

Vertically Aligned Single Crystal TiO2Nanowire Arrays Grown Directly on Transparent Conducting Oxide Coated Glass: Synthesis Details and Applications

Nanotechnology

Growth and characterization of well-aligned densely-packed rutile TiO2nanocrystals on sapphire substrates via metal–organic chemical vapor deposition

Structural and optical properties of glancing angle deposited TiO 2 nanowires array

Journal	Journal of Nanoscience and Nanotechnology
Publisher	-
ISSN	1533-4880