Materials Literature
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Recent experiments on low energy electron attachment to DNA and its components in the condensed phase and in the gas phase are reviewed and analysed. From different condensed phase experiments the sensitivity of DNA towards low energy electrons is well documented and strand breaks in DNA are observed at subexcitation…
Some thio- and aza-derivatives of natural nucleobases uracil and thymine: 2-thiouracil, 4-thiouracil, 6-methyl-2-thiouracil, 6-azauracil, and 6-aza-2-thiothymine have been studied experimentally in solid state by (1)H-(14)N NMR-NQR double resonance (NQDR) and theoretically by the Density Functional Theory (DFT)/Quantu…
In order to decrease both energy consumption and CO2 emissions, the automotive, aeronautics and aerospace industries aim at making lighter vehicles. To achieve this, composite materials provide good opportunities, ensuring high material properties and free definition of geometry. As an example, for cold applications,…
Three water-dispersible graphene derivatives, graphene oxide (GO), sulfonated graphene oxide (SGO), and sulfonated graphene (SG), were prepared and probed for their plausible cytotoxicity by non-invasive electric cell-substrate impedance sensing (ECIS). With Spodoptera frugiperda Sf9 insect cells adhered on gold micro…
We have investigated the energy transfer dynamics in a supramolecular linear polymer chain comprising oligofluorene (OF) energy donor units linked by quadruple hydrogen-bonding groups, and oligophenylene (OPV) chain ends that act as energy acceptors. Using femtosecond spectroscopy, we followed the dynamics of energy t…
The optical properties of organic semiconductor thin films deposited on nanostructured surfaces are investigated using time-resolved two-photon photoluminescence (PL) microscopy. The surfaces consist of parallel aligned metallic or dielectric nanowires forming well-defined arrays on glass substrates. Keeping the nanow…
Nanostructures are likely to become primary components of future electronic devices. Self-assembled hybrid organic nanocrystal devices are a route to achieve this goal. One central issue in using molecules in such devices deals with applying measurement methods which locally probe the molecular device. In this work we…
Single-crystal sodium nanostructures (SNs) grown from sodium chloride (NaCl) powder were observed under e-beam irradiation by in situ transmission electron microscopy technique. A novel charge-supported growth (CSG) mode was proposed to explain the rich growth dynamics observed in the in situ experiments, including di…
Design and analysis of complex nanophotonic and nanoelectronic structures require significant computing resources. Cloud computing infrastructure allows distributed parallel applications to achieve greater scalability and fault tolerance. The problems of effective use of high-performance computing systems for modeling…
Cascaded field enhancement is demonstrated in asymmetric plasmon resonant dimer nanoantennas consisting of shape-tuned ellipsoidal nanoparticles. The nanoparticles that make up the dimer have identical thickness, suggesting that the presented approach can be used to design cascaded dimer antennas compatible with stand…
Abstract In order to study the effect of the TiO2 particle crystalline composition (with different proportions of rutile and anatase crystals) on the dielectric properties of the composite, titanium dioxide (TiO2) particles and TiO2/poly(vinylidene fluoride‐co‐trifluoroethylene) [P(VDF‐TrFE)] composites were synthesiz…
We report memristor behavior in a macroscopic bulk Kondo insulator Ce3Bi4Pt3 below 10 K. The ac current and voltage relation characteristic of memristors, pinched hysteresis loops which merge into a single line at high frequency, are systematically observed. A standard lock-in technique is used to probe the origin of…
We report an experimental calibration of the exponent α, which relates intensity (I) and atomic number (Z) in HAADF-STEM imaging. The method employs size-selected Au 923 and Pd 923 clusters in an aberration-corrected 200 kV microscope. We find α = 1.46 ± 0.18 for an inner collection angle of 62 mrad. The value of α is…
Although some herbal remedies in association with vitamin therapy have been investigated in eradicating HP, no research has been done to investigate the effects of lycopene it. Our aim was to understand if lycopene could be effective in eradication of HP. In this parallel group quasi-control trial, a total of 54 patie…
The L-cysteine zwitterions in the orthorhombic crystal structure and in aqueous solution, including the deuterated isotopologues HSCD2CH(NH3 +)COO−, DSCH2CH(ND3 +)COO−, and DSCD2CH(ND3 +)COO−, have been studied by mid-infrared, far-infrared, and Raman spectroscopy. Density functional theory (DFT) calculations were per…
We report microstructure analyses and superconducting radiofrequency (SRF) measurements of macroscopic scale epitaxial MgB 2 films. MgB 2 films on 5 cm diameter sapphire disks were fabricated by a hybrid physical chemical vapor deposition (HPCVD) technique. The electron-beam backscattering diffraction (EBSD) results s…
Our aim was to synthesize a biomaterial that stimulates angiogenesis for tissue engineering applications by exploiting the ability of heparin to bind and release vascular endothelial growth factor (VEGF). The approach adopted involved modification of a hydrogel with positively charged peptides (oligolysine or oligoarg…
In addressing the potential use of B-factors derived from X-ray scattering data of proteins for the understanding the (functional) dynamics of proteins, we present a comparison of B-factors of five different proteins (SH3 domain, Crh, GB1, ubiquitin and thioredoxin) with data from recent solid-state nuclear magnetic r…
On the road transportation sector, considering its deep involvement with many social expectations, assumed such proportions to become one of the major source of air pollution, mainly in urban highly congested areas. The use of reciprocating internal combustion engines (ICE) dominates the sector and the environmental d…
Abstract A molecularly imprinted composite membrane (MICM) with pH‐controllability and selectivity to podophyllotoxin (PPT) was prepared using a polyvinylidene fluoride (PVDF) microfiltration membrane as the support. The functional monomer is 1‐phenyl‐3‐methyl‐4‐methacryloyl‐5‐pyrazolone (PMMP), which is a new β‐diket…