Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
We propose a one-way invisible cloak using transformation optics of parity-time (PT) symmetric optical materials. At the spontaneous PT-symmetry breaking point, light is scattered only for incidence along one direction since the phase-matching condition is unidirectionally satisfied, making the cloak one-way invisible…
The reversible addition–fragmentation chain transfer (RAFT) polymerization of acrylic acid (AA) in water was studied in detail at different pHs using 4-cyano-4-thiothiopropylsulfanyl pentanoic acid (CTPPA) as a control agent and 4,4′-azobis(4-cyanopentanoic acid) (ACPA) as an initiator. Well-defined hydrophilic macrom…
Unidirectional side scattering of light by a single-element plasmonic nanoantenna is demonstrated using full-field simulations and back focal plane measurements. We show that the phase and amplitude matching that occurs at the Fano interference between two localized surface plasmon modes in a V-shaped nanoparticle lie…
Chemical doping is a powerful method to improve the charge transport and to control the conductivity in organic semiconductors (OSs) for a wide range of electronic devices. We demonstrate protic ionic liquids (PILs) as effective p-dopant in both polymeric and small molecule OSs. In particular, we show that PILs promot…
Growth rate and nutrient availability are the primary determinants of size in single-celled organisms: rapidly growing Escherichia coli cells are more than twice as large as their slow growing counterparts. Here we report the identification of the glucosyltransferase OpgH as a nutrient-dependent regulator of E. coli c…
Cross-linked enzyme aggregate (CLEA) technology has been regarded as an effective carrier-free immobilization method. This method is very attractive due to its simplicity and robustness, as well as for the possibility of using the crude enzyme extract and the opportunity to co-immobilize multiple different enzymes. Th…
Abstract Theranostics is a concept that integrated imaging and therapy. As an emerging field, it embraces multiple techniques to arrive at an individualized treatment purpose. Indocyanine green (ICG) is a near infrared dye that has been approved by Food and Drug Administration (FDA) in USA for the use in indicator-dil…
An extremely stable hydrogen-bonded organic framework, HOF-8, was fabricated. HOF-8 is not only thermally stable but also stable in water and common organic solvents. More interestingly, desolvated HOF-8 exhibits high CO2 adsorption as well as highly selective CO2 and C6H6 adsorption at ambient temperature.
The purpose of this investigation was to elucidate the anti-nociceptive and anti-inflammatory properties of aqueous acetone extracts from Cienfuegosia digitata Cav; and Sida Alba L. in Swiss mice, with an aim to provide a scientific basis for the traditional use of these plants in the treatment of inflammation disorde…
Tensile-strained epitaxial La 0.67 Ba 0.33 MnO 3 (LBMO) film has been prepared by magnetron sputtering technique on (001) oriented spinel MgAl 2 O 4 substrate. The transport and magnetic measurements give an insulator-metal transition and paramagnetic-ferromagnetic transition occurring at ∼150 K and 250 K respectively…
The results of investigations into the effect of the thermal cycle of welding on the microstructure and properties of the metal of the heat-affected zone (HAZ) of new steels with carbide and carbonitride hardening – 06GBD and 15KhSATYuD using Gleeble 3800 equipment – are presented. The experimental results show that t…
HAXPES (hard X-ray photoelectron spectroscopy) is a powerful emerging instrument in surface analysis. It extended the \nphotoelectron energy range up to 15,000 eV and opened the possibility to study much thicker films, buried layers and bulk electronic \nproperties. In order to study these features, data for the elect…
Nematic liquid crystals are promising dielectrics for tunable microwave devices due to their significant birefringence and moderately low loss. Dielectric anisotropy or refractive index anisotropy of liquid crystal is one of the important parameter for the design of variety of reconfigurable devices. In this work, tra…
Thin film of tin oxide ( SnO 2) was prepared on p-type polished silicon wafer by ultrasonic spray pyrolysis technique using SnCl 4 precursor solution to fabricate nanospherical n - SnO 2/ p - Si heterojunction photoelectric device. Deposition of film was achieved at 400°C substrate temperature. The self-made ultrasoni…
Complex dielectric functions ε(E) = ε1(E) + ε2(E) were experimentally evaluated within the spectral range E = 2–25 eV and E = 2–20 eV for SrTiO3 and NdGaO3 single crystals, respectively, using synchrotron-based spectroscopic ellipsometry measurements. The ellipsometric spectra were evaluated within a framework of opti…
A zinc silicate is in a great demand in modern technology due to its fluorescent, optical and catalytic properties. However, its thermodynamic properties have been studied not sufficiently, and they are focused primarily in the geological and geochemical sciences. An attempt to calculate for a natural zinc silicate wi…
A study of the magnetic properties of nanoparticulate powders of${\rm Mg}_{0.6}{\rm Zn}_{0.4}{\rm Fe}_{2}{\rm O}_{4}$mixed ferrites prepared by a combustion reaction method is presented. Measurements of the magnetization$(M)$and of the$ac$magnetic susceptibility$(\chi_{\rm ac})$were carried out for temperature$(T)$and…
The present study focused on the importance of scale effect (micro- and macro-injection molded parts) and iPP content to the formation of epitaxial crystallization and crystal structure formed in injection-molded bars of high-density polyethylene (HDPE)/isotactic polypropylene (iPP) blends. After making the blends wit…
Deposition technology of the three layers antireflective coatings consists of hafnium compound are presented in this paper. Oxide films were deposited by means of e-gun evaporation in vacuum of 5x10-5 mbar in presence of oxygen and fluoride films by thermal evaporation. Substrate temperature was 250°C. Coatings were d…
The present study reports that isothermal phase transition induced by photoisomerization of azobenzene liquid crystals (azo-LCs) from trans- to cis-isomers results in the dissolution of poly(N-vinylcarbazole) (PVK) into azo-LCs. Transparent (scattering) states can be demonstrated using uniform (rough) morphologies of…