Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

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VIT University

Department of Physics

World University root node

School of Advanced Sciences

Vellore Campus

Centre for Nanotechnology Research

Department of Bio-Medical Sciences

School of Bio Sciences and Technology

Fulltext

IET Nanobiotechnology

Guest Editorial: Selected extended papers from the 2nd International Conference on Nanoscience and Nanotechnology (ICNAN 2019)

Arabian Journal of Chemistry

Effect of l-threonine on growth and properties of ammonium dihydrogen phosphate crystal

Objective: The aim of this study was to assess the feasibility of flattening filter-free (FFF) photon beams in hybrid intensity-modulated radiation therapy (H-IMRT) and hybrid volumetric modulated arc therapy (H-VMAT) for left-sided whole-breast radiation therapy with a boost volume (RT) using a hypofractionated dose regimen. Patients and methods: RT plans of 25 patients with left-sided early-stage breast cancer were created with H‑IMRT and H‑VMAT techniques under breath-hold conditions using 6‑MV FFF beams. In hybrid techniques, three-dimensional conformal radiotherapy (3DCRT) plans were kept as base-dose plans for the VMAT and IMRT plans. In addition, H‑IMRT in step-and-shoot mode was also calculated to assess its achievability with FFF beams. Results: All hybrid plans achieved the expected target coverage. H‑VMAT showed better coverage and homogeneity index results for the boost target (p < 0.002), while H‑IMRT presented better results for the whole-breast target (p < 0.001). Mean doses to normal tissues were comparable between both plans, while H‑IMRT reduced the low-dose levels to heart and ipsilateral lung (p < 0.05). H‑VMAT revealed significantly better results with regard to monitor units (MU) and treatment time (p < 0.001). Conclusion: The 6‑MV FFF beam technique is feasible for large-field 3DCRT-based hybrid planning in whole-breast and boost planning target volume irradiation. For breath-hold patients, the H‑VMAT plan is superior to H‑IMRT for hypofractionated dose regimens, with reduced MU and treatment delivery time. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.

Department of Thermal and Energy Engineering

School of Mechanical Engineering

Strahlentherapie und Onkologie

Hybrid planning techniques for hypofractionated whole-breast irradiation using flattening filter-free beams

Room temperature multiferroicity was achieved in CuO-doped Sr3Bi4Ti6O21 (SBT6) lead-free bismuth layered structure ferroelectric ceramics. On addition of CuO, a feeble magnetization with highest saturation magnetization of ~ 3 memu/g and least coercivity of 676 Oe was obtained for x = 0.5 mol% sample. The effect of magnetic field on the ferroelectric properties was investigated, which reveals the presence of magnetoelectric (ME) coupling indirectly and the maximum remnant polarization of 12.16 μC/cm2 at 1 kOe was obtained. Moreover, from direct measurements (ME studies), coupling between ferromagnetic and ferroelectric phases was also achieved at room temperature. Further, the presence of feeble ME effect decreases upon increasing CuO doping concentration, especially at higher doping concentration. The induced spontaneous magnetization, oxygen vacancies and strong magnetic superexchange interaction of CuO played a key role in achieving room temperature multiferroicity. © 2020, Springer Science+Business Media, LLC, part of Springer Nature.

Journal of Materials Science: Materials in Electronics

Observation of room temperature multiferroicity in CuO-doped Sr3Bi4Ti6O21 lead-free ferroelectric ceramics

There is no ideal detector-phantom combination to perform patient specific quality assurance (PSQA) for Total Marrow (TMI) and Lymphoid (TMLI) Irradiation plan. In this study, 3D dose reconstruction using mega voltage computed tomography detectors measured Leaf Open Time Sinogram (LOTS) was investigated for PSQA of TMI/TMLI patients in helical tomotherapy. The feasibility of this method was first validated for ten non-TMI/TMLI patients, by comparing reconstructed dose with (a) ion-chamber (IC) and helical detector array (ArcCheck) measurement and (b) planned dose distribution using 3Dγ analysis for 3%@3mm and dose to 98% (D98%) and 2% (D2%) of PTVs. Same comparison was extended for ten treatment plans from five TMI/TMLI patients. In all non-TMI/TMLI patients, reconstructed absolute dose was within ± 1.80% of planned and IC measurement. The planned dose distribution agreed with reconstructed and ArcCheck measured dose with mean (SD) 3Dγ of 98.70% (1.57%) and 2Dγ of 99.48% (0.81%). The deviation in D98% and D2% were within 1.71% and 4.10% respectively. In all 25 measurement locations from TMI/TMLI patients, planned and IC measured absolute dose agreed within ± 1.20%. Although sectorial fluence verification using ArcCHECK measurement for PTVs chest from the five upper body TMI/TMLI plans showed mean ± SD 2Dγ of 97.82% ± 1.27%, the reconstruction method resulted poor mean (SD) 3Dγ of 92.00% (± 5.83%), 64.80% (± 28.28%), 69.20% (± 30.46%), 60.80% (± 19.37%) and 73.2% (± 20.36%) for PTVs brain, chest, torso, limb and upper body respectively. The corresponding deviation in median D98% and D2% of all PTVs were &lt; 3.80% and 9.50%. Re-optimization of all upper body TMI/TMLI plans with new pitch and modulation factor of 0.3 and 3 leads significant improvement with 3Dγ of 100% for all PTVs and median D98% and D2% &lt; 1.6%. LOTS based PSQA for TMI/TMLI is accurate, robust and efficient. A field width, pitch and modulation factor of 5 cm, 0.3 and 3 for upper body TMI/TMLI plan is suggested for better dosimetric outcome and PSQA results. © 2020, The Author(s).

Radiation Oncology

Leaf open time sinogram (LOTS): a novel approach for patient specific quality assurance of total marrow irradiation

In the last couple of decades, the largest challenge for the storing of electrical power has extended for dynamic and stationary applications. Though, the existing electrochemical systems are expensive to enter new marketplaces, still greater accomplishment is essential, and ecologically suitable resources are desired. These restrictions possibly resolved by extensive developments in innovative substances of which fundamental components are accessible in large amounts in nature; nanostructured materials seem to appear to possess a big part within the production. Novel negative electrodes with greater storage capability are desirable together with safe and cheap anodes and steady electrolyte coordination. Especially, nanoarchitectures in two-dimension (2D) and three dimensions (3D) have made phenomenal advancements in these days. In this review, the latest improvements in the approaches to the production, choice of distinct substrates of the current collector, and structural arrangement of self-supported nanoarchitecture electrodes with distinct an electrode materials, and catalysts are examined systematically. The inherent association of the excellent structural natures, the conductive layers, and electrochemical dynamic characteristics of self-supported materials (SSMs) are carefully evaluated. Finally, the upcoming plans and ways of producing SSMs are emphasized. This may open an innovative way of emerging perfect versatile SSMs for further enhanced Lithium-ion batteries (LIBs). © 2020

Journal of Alloys and Compounds

Self-supported materials for battery technology-A review

It is known that Eisert–Wilkens–Lewenstein scheme and Marinatto–Weber scheme are widely used to quantize simultaneous games. Further, distributed quantum game can be implemented in quantum networks using the schemes based on client–server model and peer-to-peer model. While most of the research works focus on simultaneous games, in this work, we propose the quantum circuit implementation of sequential game, namely cop and robber game using peer-to-peer model. Thus we have made a modest attempt to show the possibility of implementing sequential games in quantum circuits. Further, quantum version of cop and robber game is analyzed. Implications of the results are discussed from the game-theoretic point of view and quantum circuit point of view. © 2020, Springer Science+Business Media, LLC, part of Springer Nature.

VIT Unitversity

Quantum Information Processing

Implementation of sequential game on quantum circuits

In this work, we analyze the concept of quantum bridge using Non-Maximally Entangled (NME) states. We propose two schemes for the quantum teleportation of an unknown qubit using an NME channel as a bridge between the sender and the receiver. We show that quantum channels and the measurements are equivalent in achieving the quantum teleportation only when the degree of entanglement is the maximum. © 2020 World Scientific Publishing Company.

International Journal of Quantum Information

Equivalence between entanglement of channel and measurement in quantum teleportation

Recently, a modified approach to Eisert, Wilkens and Lewenstein quantization scheme has been proposed in Vijayakrishnan and Balakrishnan (Quantum Inf Process 18:112, 2019), with an aim to explore the two-qubit entangling operators in the domain of game theory. In the present work, we show the implications of such a modification by considering the possibility of conversion of symmetric to potential game, when one of the players uses a quantum strategy while the other resorts to classical strategy. Secondly, we show that entangling operators which produce same average payoffs do not produce same average entanglement. Furthermore, the converse is also found to hold good. Following which, we show that conversion of symmetric to potential games can be done through operators which are perfect entanglers. © 2020, Springer Science+Business Media, LLC, part of Springer Nature.

Significance of entangling operators in the purview of modified EWL scheme

Rare earth (RE = La, Er, and YbFeO3) ferrites are prepared from their nitrate precursors using the solution combustion method. Structural analysis using powder X-ray diffraction (XRD) technique indicates that the synthesized La-, Er-, and Yb–FeO3 perovskite nanoparticles have pure phase orthorhombic super unit cells. The XRD patterns of Er–FeO3 and Yb–FeO3 are found to be indexed in Pbnm (62) space group with cell dimensions in the range of ao = 5.2611–5.2784 Å, bo = 5.5729–5.5898 Å, and co = 7.596–7.6002 Å, while the space group of Pnma (62) with ao = 5.5688 Å, bo = 7.8523 Å, and co = 5.5542 Å are obtained for LaFeO3. Surface morphological studies show aggregated spherical-shaped nanoparticles having an orthorhombic crystal structure with an average particle size of ~ 50 nm. Magnetic properties of all the three RE ferrite synthesized in this work exhibit antiferromagnetic behavior. The study of dielectric properties of all the three RE ferrites shows dispersive behavior at low frequencies with low loss. Temperature-dependent dielectric studies confirm that the antiferromagnetic-paramagnetic transition temperature appears at 445 K. A larger P-E loop with a squareness ratio of 1.583 for ErFeO3 orthoferrites suggests that it is more advantageous than LaFeO3 and YbFeO3 for making modern electronic devices. © 2020, Springer Science+Business Media, LLC, part of Springer Nature.