Materials Literature
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The crystal structure of the TLR4-MD-2-LPS complex responsible for triggering powerful pro-inflammatory cytokine responses has recently become available. Central to cell surface complex formation is binding of lipopolysaccharide (LPS) to soluble MD-2. We have previously shown, in biologically based experiments, that a…
In high voltage (HV) electrical power system, variety of solid, liquid and gaseous materials are used for insulation purpose to protect the incipient failure inside the HV power equipment. Among these the solid insulation is widely used for high voltage power equipment HV electrical power system. Most of insulating ma…
In this work, we report a combined experimental and theoretical study on molecular structure, vibrational spectra, natural bond orbital (NBO) and UV spectral analysis of [2-(2-methyl-5-nitro-1-imidazolyl) ethanol] (Metronidazole-MTD). The FT-IR solid phase (4000-400 cm -1 ) liquid phase, and FT-Raman spectra (3500-50…
The electrochemistry, spectroscopy, and electrogenerated chemiluminescence (ECL) of three BODIPY derivatives, PB, MCPB, and DCPB, are investigated. Cyclic voltammetry of all three derivatives shows at low scan rates reversible reduction waves and less reversible oxidation waves (consistent with lack of substitution in…
Supramolecular hydrogels constructed through molecular self-assembly of small molecules have unique stimuli-responsive properties; however, they are mechanically weak in general, relative to conventional polymer gels. Very recently, we developed a zwitterionic amino acid tethered amphiphilic molecule 1, which gave ris…
In the present study we focus on the precipitation processes during heating and ageing of β-metastable phase in the near β Ti-5553 alloy. Transformation processes have been studied using continuous high energy X-Ray Diffraction (XRD) and electrical resistivity for two different states of the β-metastable phase. Micros…
We show that a clean multiband superconductor may display one or several phase transitions with increasing temperature from or to chiral superconducting states with broken time-reversal symmetry with continuous evolution of the relative phases of the superconducting order parameters. These transitions may occur when m…
The phase diagram for an AB diblock copolymer melt with polydisperse A blocks and monodisperse B blocks is evaluated using lattice-based Monte Carlo simulations. Experiments on this system have shown that the A-block polydispersity shifts the order–order transitions (OOTs) toward higher A-monomer content, while the or…
Abstract In this account we report on the self‐assembly of bis(merocyanine) dyes into helical nanorods by emphasizing the kinetic pathways and the mechanistic aspects leading to chiral amplification. A complex self‐assembly sequence of these dipolar dyes into well‐defined helical nanorod structures has been revealed s…
Imaging of specific intracellular target proteins in living cells has been of great challenge and importance for understanding intracellular events and elucidating various biological phenomena. Highly photoluminescent and water-soluble semiconductor nanocrystal quantum dots (QDs) have been extensively applied to vario…
Usually, the adiabatic magnetic exchange-energy hypersurface is parametrized in terms of the bilinear Heisenberg interactions in pairs of atoms. For general magnetic configurations, this model is not complete even if it includes pairs with up to infinite interatomic distances. In contrast, the modeling by an in princi…
Magnetic targeting has shown promise to improve the efficacy and safety of different classes of therapeutic agents by enabling their active guidance to the site of disease and minimizing dissemination to nontarget tissues. However, its translation into clinic has proven difficult because of inherent limitations of tra…
We investigate a single sheet graphene analogue and a single-walled nanotube of ZnS using electronic structure calculations. Unlike the nearly perfectly flat structures of graphene and graphene analogues of other binary compounds (e.g., BN, ZnO, SiC), ZnS sheets are predicted to attain higher stability as complex, rad…
Pump–probe transient absorption microscopy was used to follow the electron–hole (e–h) recombination dynamics at different points within individual needle-shaped ZnO rods to characterize spatial differences in dynamical behavior. The results from pump–probe experiments are correlated with spatially resolved ultrafast e…
We investigate the transverse electric field ($E$) dependence of the $\ensuremath{\nu}=0$ quantum Hall state (QHS) in dual-gated graphene bilayers in high magnetic fields. The longitudinal resistivity ${\ensuremath{\rho}}_{xx}$ measured at $\ensuremath{\nu}=0$ shows an insulating behavior which is strongest in the vic…
In order to improve the fracture toughness in ultrafine-grained metals, we investigate the interactions among crack tips, dislocations, and grain boundaries in aluminum bicrystal models containing a crack and $\ensuremath{\langle}112\ensuremath{\rangle}$ tilt grain boundaries using molecular dynamics simulations. The…
Many studies have considered the luminescence of colloidal II-VI nanocrystals, both in solution at a collective scale and at an individual scale by confocal microscopy. The quantum yield is an important figure of merit for the optical quality of a fluorophore. We detail here a simple method to determine the quantum yi…
Polymer nanocomposites have revolutionised material performance, most notably in the plastics, automotive and aerospace industries. However, in order to be commercially viable, many of these materials must withstand high temperatures. In this book, leaders in the field outline the mechanisms behind the generation of s…
Using atomistic simulations, we determine the roughness and the thermal properties of a suspended graphane sheet. As compared to graphene, we found that (i) hydrogenated graphene has a larger thermal contraction, (ii) the roughness exponent at room temperature is smaller, i.e., $\ensuremath{\simeq}$ 1.0 versus $\ensur…
BACKGROUND: Diatoms, which are important planktons widespread in various aquatic environments, are believed to play a vital role in primary production as well as silica cycling. The genomes of the pennate diatom Phaeodactylum tricornutum and the centric diatom Thalassiosira pseudonana have been sequenced, revealing so…