Materials Literature
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利用掺锑的纳米SnO 2 和水性聚氨酯(WPU)制备了透明隔热的复合涂层. 实验发现涂层的隔热起因于涂层中掺锑的纳米SnO 2 粒子对红外线的吸收. 隔热测试结果表明在阳光的照射下, 涂层表面的温度升高, 而测试箱内的温度最大下降17.5℃. 实验制备的掺锑的纳米SnO 2 /WPU复合隔热涂层具有许多优点, 如成本低、化学性能稳定、制作方便等, 是一种性价比较高的隔热涂层.
This paper presents a realistic design of a three-dimensional invisibility full cloak device at Terahertz frequency, consisting of radially arranged polymer slabs covered with III-V semiconductor materials featuring Drude-like resonance. By applying high order optical transformation, it is possible to constrain the se…
Growth of Ge2Sb2Te5 phase-change films on flexible polyimide substrates by pulsed laser deposition (PLD) is demonstrated. The effect of annealing temperature on the crystalline nature of the films was studied. A decrease of (200) lattice plane distance with the increase of annealing temperature was revealed for the fi…
SUMMARY In order to develop polymer‐clay nanocomposites with reduced flammability by incorporation of char‐forming conventional nitrogen and phosphorus based flame retardants at low loading levels, the polypropylene‐clay nanocomposites were prepared by melt blending method with Cloisite 15A (15A), organic phosphinate…
Surface enhanced Raman scattering (SERS) of adsorbed molecule on colloidal gold nanoparticles of different shapes, namely nanospheres (NSs), nanorods (NRs), and nanoprisms (NPs) as well as the three NPs arrays of different interstice prepared by NS lithography, are studied with incident wavenumbers in the near‐dipole…
Heterobifunctional poly(ethylene glycol)s can be used for many biomedical applications ranging from solubility enhancement of hardly soluble compounds to surface modification of medical devices. In order to modify gold nanoparticles as model particles for drug targeting applications, PEG derivatives are synthesized th…
In this study, we develop a detailed numerical approach towards the theoretical calculation of the phonon contribution to the dimensionless figure of merit $ZT$ that parameterizes the efficiency of the thermoelectric effect, and apply it to the case of an $n$-doped Si${}_{0.754}$Ge${}_{0.246}$ alloy sample. This is ac…
The reaction of either V(2)F(6)·4H(2)O or a mixture of 60 wt % VF(2)·4H(2)O and 40 wt % VF(3)·3H(2)O with a water-saturated gaseous mixture of 15-20 vol % hydrogen in argon leads to the formation of a new polymorph of V(3)O(5) crystallizing in the orthorhombic anosovite-type structure. Quantum-chemical calculations sh…
The α(4) atropoisomer of a tetraaryl porphyrin and its Pd(II) complex, both bearing four hydroxyquinolinyl chelating units pre-organised on the same face of the porphyrin backbone, bind a Nd(III) centre thus affording either a mononuclear or a heterobinuclear anionic species, respectively. The near-infrared emission o…
Abstract The capability of UVM‐7 silicas to work as supports for drug storage and delivery is investigated using ibuprofen as a model. UVM‐7 silicas are surfactant‐assisted synthesised mesoporous materials displaying a characteristic bimodal pore architecture related to their nanoparticulate texture. Strict control of…
Abstract Theoretical investigation on local electronic structure and stability of the π–π stacking interaction of pyrazinamide (PZA) with armchair (5,5) and zigzag (9,0) single‐walled carbon nanotubes (SWCNTs) is performed using density functional theory (DFT). PZA is physisorbed onto nanotube sidewall through interac…
The high sensitive surface enhanced Raman scattering (SERS) makes its broad utilization in biomolecule recognition. In this study, a highly specific polymer microbead-based Raman/SERS immunoassay system is developed and evaluated. Different analytical techniques such as UV–visible spectrophotometry, transmission elect…
Anomalous low temperature behaviors in cuprous oxide (Cu2O) film grown on quartz substrate have been investigated by temperature‐dependent Raman and transmittance spectra. The longitudinal optical components of two Γ15‐ phonon modes become sharper and more intense at a low temperature. It can be found that the highest…
The compounds ThOS, ThOSe, and ThOTe have been synthesized, and their structures have been determined by means of single-crystal X-ray diffraction methods. All three compounds adopt the PbFCl structure type in the tetragonal space group D(4h)(7) - P4/nmm. More precise crystallographic data have been obtained for ThOS…
We have designed a cylindrical multilayered structure to reduce scattering for an acoustic sensor while allowing it to receive external information. The proposed structure consists of two alternately arranged complementary media with homogeneous isotropic single-negative parameters. Numerical results show that the aco…
Two Ce 3+ containing double perovskites Ba 2 Ce M O 6 ( M = Nb and Ta) have been prepared through the use of mildly reducing conditions, and the Ce valence state has been shown to be +3 through Ce L-edge X-ray absorption measurements. Both oxides adopt a monoclinic structure in I 2/ m at room temperature and undergo t…
The purpose of this study is to evaluate in vivo efficacy and loco-regional distribution of a doxorubicin (DOX)-loaded Polyoxyl 35 Castor Oil (Cremophor EL, CrEL) noncovalent modified single-walled carbon nanotubes (SWNTs) formulation in a sarcoma tumor model after intratumoral injection. The drug loaded SWNTs were su…
This article presents the results of investigation into receiving amide modification agents of smectic clays, used as nanofillers in polymer nanocomposites. Prepared materials were obtained on the base of terephthalic and isophthalic acids and simple aliphatic amines. Such structure makes them good layered silicates m…
The adsorption of polydimethylsiloxane (PDMS) single chain with different chain lengths on a silicon (111) surface were studied by molecular dynamics simulations. The relative dielectric constant was selected to be 1 and 78.0 to mimic in vacuum and in solution environment, respectively. The chains were all present as…
We show that optical anisotropy can exist in composite materials even when they consist of components that are isotropic in shape, spatial distribution, and optical properties. We demonstrate that the simple presence of a surface on a metal-dielectric composite induces an optical anisotropy that manifests itself in an…