Materials Literature
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Chemical pesticides are resistant to biodegradation beside carcinogenic in nature even at trace levels. Effort to remove pesticide by conventional methods has several inherent disadvantages of longer time or cost and this bottleneck can be avoided by utilizing nanoparticles as it can mineralise at a faster rate. Nanop…
We have prepared graphene-veiled-nanoparticle hybrids by depositing a bilayer graphene film on silver nanoparticles with large particle sizes, ∼200 nm. The hybrids possess good thermal stability and exhibit great surface-enhanced Raman scattering with enhancement factors of 49- and 21-fold for the G and 2D peaks, resp…
We use a combination of global back-gating and local top-gating to define nanoscale devices in the two-dimensional electron gas at the LaAlO3-SrTiO3 interface, demonstrating an efficient way for much finer spatial control over the properties of the interface, as compared to back-gating alone. The devices show indicati…
We report a method for accelerated nanoscale nuclear magnetic resonance imaging by detecting several signals in parallel. Our technique relies on phase multiplexing, where the signals from different nuclear spin ensembles are encoded in the phase of an ultrasensitive magnetic detector. We demonstrate this technique by…
Anisotropic diamagnetism of pristine graphite and graphene is well known. Here, evidence of significant induced ferromagnetism in multilayer graphene (MLG) decorated with ferrimagnetic Fe3O4 particles is reported. This MLG-Fe3O4 nano-composite was prepared by a one-step ultrasonic treatment at 75 °C in the surfactant…
Using first-principles calculations, it is shown that the work function of graphene on copper can be adjusted by varying the concentration of intercalated alkali metals. Using density functional theory, we calculate the modulation of work function when Li, Na, or K are intercalated between graphene and a Cu(111) surfa…
The effects of Li2O–B2O3–SiO2(LBS) glass additive on the microstructural development and gyromagnetic properties of low-temperature sintered LiZnTi ferrites were investigated. The aim was to assess the potential applications of LiZnTi ferrites in low-temperature cofired ceramic (LTCC) technology, and to produce LTCC p…
The highest symmetry in which piezoelectricity was thought to occur is cubic. Here, it is shown that third rank piezoelectricity can occur in isotropic chiral solids. Polarization is coupled via an isotropic third rank tensor to the antisymmetric part of the stress. Asymmetric stress can occur if balanced by moments d…
This paper details the fabrication of n-ZnO single microwire (SMW)-based high-purity ultraviolet light-emitting diodes (UV-LEDs) with an added SiO2 barrier layer on the p-Si substrate. However, the current-voltage (I-V) curve exhibited non-ideal rectifying characteristics. Under forward bias, both UV and visible emiss…
High contact resistance between graphene and metal is a major huddle for high performance electronic device applications of graphene. In this work, a method to improve the contact resistance of graphene is investigated by varying the ratio of peripheral length and area of graphene pattern under a metal contact. The co…
A green photoinduced method for the modification of a biodegradable and biocompatible polymer, Poly(3-hydroxybutyrate- co -3-hydroxyvalerate) (PHBHV) has been successfully carried out using two types of monomers with potential antibacterial effects, i.e., 2-[(methacryloyloxy)-ethyl] trimethylammonium chloride (META) a…
In this paper, we studied the magnetic properties of the Heusler-type NiMnGa glass-covered microwires. We observed that annealing conditions strongly affect the temperature dependence of magnetization and Curie temperature of microwires. After long (6 h) annealing of the microwires at 773 K, a ferromagnetic ordering i…
Super-large-period Aurivillius thin films with a pseudo-period of ten were grown on (0 0 1) SrTiO3 substrates using the pulsed laser deposition method. The as-grown films are found to be coherently strained to the substrate and atomically smooth. X-ray diffraction indicates an average periodicity of ten, while analysi…
In this study, a 2-D finite element formulation in the frame of nonlocal integral elasticity is presented. Subsequently, the bending problem of a nanobeam under different types of loadings and boundary conditions is solved based on classical beam theory and also 3-D elasticity theory using nonlocal finite elements (NL…
Facilitation of the wound healing process is important because a prolonged wound site increases pain and the risk of infection. In oriental medicine, an extract of Morus alba root (MA) has usually been prescribed as traditional treatment for accelerating wound healing, and it has been proven to be safe for centuries.…
Abstract A facile one-pot method for synthesizing different morphologies of PdCu nanocrystals (NCs) has been introduced. The morphologies of PdCu NCs can be controlled by tuning the amount of the single capping ligand of triphenylphosphine (TPP) in an organic solvent medium. Highly structured cubic, sphere, and sphere…
Vascular endothelial growth factor receptor (VEGFR) is over-expressed on a variety of tumour cells and tumour neovasculature, and so becomes well-documented target for cancer treatment. This study was designed to evaluate the cellular targeting and anti-tumor potency of VEGF-conjugated nanoparticles (VEGF-NPs). The po…
This paper describes various methods of preparation and characterization of supports (e.g. silicon, polymer, and metal) with grafted polymers and copolymers, which were tailored for biomedical applications. In particular, there are described methods related to preparation of substrates by surface modification leading…
We report experimental studies on the temperature dependence of equilibrium separation of a pair of nematic boojum colloids. The interparticle separation is linearly proportional to the elastic anisotropy and the orientation angle with respect to the rubbing direction. The latter result is in agreement with the recent…
To probe the origin of p-type conductivity in Sb-doped ZnO, a careful and detailed synchrotron radiation study was performed. The extended X-ray absorption fine structure and X-ray photoelectron spectroscopy investigations provided the evidence for the formation of the complex defects comprising substitution Sb ions a…