Materials Literature
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We report the imaging, mass spectrum, and dynamical behavior of adatoms and small clusters observed on the surface facets of size-selected, truncated octahedral gold clusters, Au(N) (N = 923 ± 23), via aberration-corrected scanning transmission electron microscopy. Our quantitative atom counting measurements show that…
We present the low-temperature XRD, susceptibility, specific heat, and resistivity results on single crystal Mn${}_{1\ensuremath{-}x}$Co${}_{x}$V${}_{2}$O${}_{4}$. With increasing Co doping, the chemical pressure related to the decreasing V-V distance drives the system toward the itinerant electron limit, accompanied…
Abstract We prepared titanium dioxide/PVA nanocomposite fiber webs for application in multifunctional textiles by electrospinning. The morphological properties of the TiO 2 /PVA nanocomposite fibers were characterized using scanning electron microscopy and transmission electron microscopy. Layered fabric systems with…
A hydrophobic starch derivative is used for safe and enhanced delivery of anticancer agents. The synthesis and characterization of propyl starch with a controlled degree of substitution to modulate the release of the encapsulated hydrophobic drug is reported. The application of this polymer for formulating nanoparticl…
Gold nanoprobes have become attractive diagnostic and therapeutic agents in medicine and life sciences research owing to their reproducible synthesis with atomic level precision, unique physical and chemical properties, versatility of their morphologies, flexibility in functionalization, ease of targeting, efficiency…
Three series of new ambipolar polyimides containing aniline derivatives with different degree of 4-methoxyphenyl substituent showing anodically/cathodically electrochromic characteristic were prepared from the polycondensation of three diamine monomers—4,4′-bis[(4-aminophenyl)amino]diphenylamine ( 3 ), 4,4′-bis[(4-ami…
For preparing cell sheets effectively for cell sheet-based regenerative medicine, cell-adhesion strength to thermoresponsive cell culture surfaces need to be controlled precisely. To design new thermoresponsive surfaces via a terminal modification method, thermoresponsive polymer brush surfaces were fabricated through…
Symmetry of the crystal lattice can be a determining factor for the structure of Cooper pairs in unconventional superconductors. In this study we extend the discussion of superconductivity in noncentrosymmetric materials to the case when inversion symmetry is missing locally, but is present on a global level. Concrete…
Out of the frame: A marker study using gold frames was designed to reveal that silver nanoplates undergo a shape transition during their seeded growth from triangular to circular to hexagonal plates before ultimately returning to triangular structures with an orientation 180° relative to that of the original triangula…
Magnesium (Mg) alloys present many advantages over current materials used in medical implants and devices. However, the rapid degradation of Mg alloys can raise the local pH and create gas cavities. Fundamental understanding of their biodegradation processes is necessary for their success in clinical applications. Thi…
Hollow gold nanoshells are more efficient in heat generation triggered by near infrared laser when they are loaded into porous silicon particles, which results in effective cancer-cell killing in vitro and in vivo. Collective electromagnetic coupling of nanoconfined hollow gold nanoshells leads to dramatic enhancement…
It is widely believed that, in contrast to its electron-doped counterparts, the hole-doped compound Ba(1-x)K(x)Fe(2)As(2) exhibits a mesoscopic phase separation of magnetism and superconductivity in the underdoped region of the phase diagram. Here, we report a combined high-resolution x-ray powder diffraction and volu…
Organic-inorganic hybrids with controlled morphology at the nanometer scale represent an exciting class of materials that can display unique properties that are culminated by the characteristics of each building block. Recent research highlights their potential as biomimetic composites and application in biosensing, l…
The technological conditions of oxygen content variation in epitaxial La0.7Sr0.3MnO3-δ films and the peculiarities of change of their transport characteristics were investigated. The films were grown onto single crystal SrTiO3 substrates by an enhanced method of dc magnetron sputtering of a ceramic target. It was reve…
A new implementation is proposed for including van der Waals interactions in Density Functional Theory using the Maximally-Localized Wannier functions. With respect to the previous DFT/vdW-WF method, the present DFT/vdW-WF2 approach, which is based on the simpler London expression and takes into account the intrafragm…
High quality single crystals of Cs$_2$Au$_2$X$_6$ (X=Br,I) were grown using a ternary self-flux method. Structural refinements based on single crystal X-ray diffraction measurements show that both materials have a distorted perovskite structure belonging to the I4/mmm space group with full site occupancy. Transport me…
We study the ac electric potential induced by the electron sound wave (a perturbation of the electron distribution function propagating with the Fermi velocity) in single crystals of high purity gallium. The potential and the elastic components of the electron sound demonstrate qualitatively different dependencies on…
We have developed a theory of the longitudinal $g$ factor of light holes in semiconductor quantum wells. It is shown that the absolute value of the light-hole $g$-factor can strongly exceed its value in the bulk and, moreover, the dependence of the Zeeman splitting on magnetic field becomes non-linear in relatively lo…
A series of single-component Sr 3 Lu(PO 4 ) 3:Eu 2+,Mn 2+ phosphors were successfully synthesized by solid-state reaction, and their photoluminescence properties were investigated. The Sr 3 Lu(PO 4 ) 3:Eu 2+,Mn 2+ phosphor system was efficiently excited at wavelength ranging from 250 to 420 nm, which is well-matched w…
Nanoantennas for visible and infrared radiation can strongly enhance the interaction of light with nanoscale matter by their ability to efficiently link propagating and spatially localized optical fields. This ability unlocks an enormous potential for applications ranging from nanoscale optical microscopy and spectros…