Materials Literature
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The inside cover illustrates a pathway to bypass Pgp-mediated multidrug resistance in cancer cells through endocytosis of microcapsules (right), compared with drug effluxing (left), as reported in work by Frank Caruso and co-workers on p. 5398. Biodegradable polymer capsules conjugated with drug were prepared through…
Oxide ions in low coordination (O 2− LC ) play a major role in adsorption and catalysis properties of CaO powders. They also give specific photoluminescence features that could be used to characterize the distribution of these ions at the molecular level, but up to now, the photoluminescence of defective CaO powders w…
The Rietveld method is based on a weighted least-squares fit of a model diffraction pattern to the step-scan data of a complete experimental X-ray or neutron diffraction pattern. It is shown here that the weight most commonly used in Rietveld refinement of powder diffraction data leads to a biased background estimate.…
Replica exchange molecular dynamics (REMD) simulations using explicit solvents were used to study the folding behaviors of a group of m -poly(phenylene ethynylene)s (mPPEs), which are being actively investigated for a variety of biological and catalysis applications. The mPPEs considered in this study have different e…
The symmetry issue of the interaction matrix between multiple slip-systems in the theory of crystal plasticity at finite deformation is revisited. By appealing to possibly non-uniform distribution of slip-system activity in a representative space-time element of a crystal, symmetry of the slip-system interaction matri…
We investigated the effects of periodic external potentials on properties of charge carriers in graphene using both the first-principles method based on density functional theory (DFT) and a theoretical approach based on a generalized effective spinor Hamiltonian. DFT calculations were done in a modified Kohn-Sham pro…
Dynamical nonlinear systems provide a new approach to the old problem of increasing the efficiency of thermoelectric machines. In this review, we discuss stylized models of classical dynamics, including non-interacting complex molecules in an ergodic billiard, a disordered hard-point gas and an abstract thermoelectric…
A linearly/circularly polarized heterodyne light beam coming from a heterodyne light source with an electro-optic modulator in turn enters a modified Twyman-Green interferometer to measure the surface plane of a GRIN lens. Two groups of periodic sinusoidal segments recorded by a fast complementary metal-oxide semicond…
We have measured magnetic susceptibility of iron pnictide superconductors ${\text{SmFeAsO}}_{0.85}$ and ${\text{PrFe}}_{0.925}{\text{Co}}_{0.075}\text{AsO}$ under hydrostatic pressure up to 1.15 GPa. The superconducting transition temperature $({T}_{\text{C}})$ deceases linearly and the Meissner signal size also decre…
Nucleation effects of a novel nucleating agent, bicyclic [2,2,1] heptane di-carboxylate (commercial product name: HPN-68), in isotactic polypropylene (iPP) were studied by using differential scanning calorimetry (DSC) and wide-angle X-ray diffraction (WAXD). The results showed that HPN-68 is a typical nucleating agent…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Zhiguang Guo, Weimin Liu; Formation mechanism of robust silver nanoparticle film with superhydrop…
Using the first-principles approach with the Landauer formalism, we studied the effects of monovacancy and Stone–Wales defects on the electrical conductance of carbon nanotube (CNT) itself and its junction with copper electrodes. We found that the Stone–Wales defect has almost negligible impact on the electrical perfo…
Spectral and transport properties of doped (or gated) graphene with long-range charged impurities are discussed within the self-consistent Born approximation. It is shown how, for impurity concentrations ${n}_{imp}\ensuremath{\gtrsim}n$ a finite density of states appears at the Dirac point, the one-particle lifetime n…
ZnO nanorod strain driving transistor (SDT) with 107 scale “on”-“off” ratio has been fabricated on Kapton substrate by a single-step hydrothermal reaction. The transistor is driven by strain due to the change in Schottky barrier height caused by piezoelectric effect as well as the change of contact area between ZnO br…
d-Mycaminose is an unusual dideoxy sugar found attached to the antibiotic tylosin, a commonly used veterinarian therapeutic. It is synthesized by the Gram-positive bacterium Streptomyces fradiae as a dTDP-linked sugar. The last step in its biosynthesis involves the dimethylation of the hexose C-3' amino group by an S-…
Isolated single crystals of isotactic polypropylene (iPP) grown from the melt were studied by optical microscopy and atomic force microscopy (AFM). The single crystals had a well-known rectangular shape when crystallized at high temperatures (Tc) above 155°C. The width increased with decreasing Tc, and the shape becam…
Au@CdS core−shell nanowires have been fabricated readily by exciting the surface-plasmon resonances of gold nanospheres, which were priorly connected to each other by 1,5-pentanedithiol (PDT) and coated with CdS, using picosecond laser pulses at room temperature. Gold nanospheres were cross-linked by PDT molecules to…
K10Sn3(P2Se6)4 and Cs2SnP2Se6 stabilize the lower oxidation state of Sn(2+). K10Sn3(P2Se6)4 crystallizes in the trigonal space group R3̅ with a = b = 24.1184(7) Å and c = 7.6482(2) Å at 100 K. Cs2SnP2Se6 crystallizes in P21/c with a = 10.1160(4) Å, b = 12.7867(5) Å, c = 11.0828(5) Å, and β = 94.463(3)° at 100(2) K. El…
The shape of composite peak 5 in the glow curve of LiF:Mg,Ti (TLD-100) following (90)Sr/(90)Y beta irradiation, previously demonstrated to be dependent on the cooling rate used in the 400°C pre-irradiation anneal, is shown to be dependent on ionisation density in both naturally cooled and slow-cooled samples. Followin…
The atomic force microscope (AFM) is used to study the morphology of graphene grown on 4H-SiC . A mesh-like network of ridges with high curvature is revealed that bound atomically flat, tile-like facets of few-layer graphene (FLG). To further study the structural properties of the ridge network, nanomanipulation exper…