Materials Literature
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Many-body interactions in crystalline solids can be conveniently described in terms of quasiparticles with strongly renormalized masses as compared to those of non-interacting particles. Examples of extreme mass renormalization are on the one hand graphene, where the charge carriers obey the linear dispersion relation…
We have investigated the electronic structures of various potentially half-metallic Heusler compounds with the Tran-Blaha modified Becke-Johnson+local density approximation (TB-mBJLDA) potential within the density functional theory. The half-metallic gaps are considerably enhanced with respect to values from the Perde…
The preparation of gold nanomolecules with sizes other than Au(25)(SR)(18), Au(38)(SR)(24), Au(102)(SR)(44), and Au(144)(SR)(60) has been hampered by stability issues and low yields. Here we report a procedure to prepare Au(67)(SR)(35), for either R = -SCH(2)CH(2)Ph or -SC(6)H(13), allowing high-yield isolation (34%,…
We report on a family of complex birefringent elements, called Multi-Twist Retarders (MTRs), which offer remarkably effective control of broadband polarization transformation. MTRs consist of two or more twisted liquid crystal (LC) layers on a single substrate and with a single alignment layer. Importantly, subsequent…
We study the quantum diffusive transport of multivalley massive Dirac cones, where time-reversal symmetry requires opposite spin orientations in inequivalent valleys. We show that the intervalley scattering and intravalley scattering can be distinguished from the quantum conductivity that corrects the semiclassical Dr…
Electrically driven metal-insulator transition (MIT) in vanadium dioxide (VO2) is of interest in emerging memory devices, neural computation, and high-speed electronics. We report on the fabrication of out-of-plane VO2metal-insulator-metal structures and reproducible high-speed switching measurements in these two-term…
Colloidal semiconductor quantum dots (QDs) constitute a perfect material for ink-jet printable large area displays, photovoltaics, light-emitting diode, bio-imaging luminescent markers and many other applications. For this purpose, efficient light emission/absorption and spectral tunability are necessary conditions. T…
Cellulose nanocrystals (CNCs) are rod-like colloidal particles that irreversibly adsorb at the oil-water interface to produce ultrastable emulsions. When the internal phase fraction is increased, these CNCs can produce gel-like oil-in-water high internal phase emulsions (HIPEs) in which more than 90% of the hydrophobi…
Nanotechnology has finally and firmly entered the realm of drug delivery. Performances of intelligent drug delivery systems are continuously improved with the purpose to maximize therapeutic activity and to minimize undesirable side-effects. This review describes the advanced drug delivery systems based on micelles, p…
We used a multifunctional mesoporous silica nanoparticle (MSNP) carrier to overcome doxorubicin (Dox) resistance in a multidrug resistant (MDR) human breast cancer xenograft by codelivering Dox and siRNA that targets the P-glycoprotein (Pgp) drug exporter. The Pgp siRNA selection from among a series of drug resistance…
Abstract To explore the mechanisms in Surface‐enhanced Raman Scattering (SERS) measurements, silver nanoparticles (AgNPs) were first prepared by a silver mirror reaction to form different particle sizes and different distributions on glass substrates. After the resulting surfaces were probed with molecules of p‐Amino‐…
The use of an optically thick slab may provide versatile solutions for the realization of a current injection-type laser using photonic crystals. Here, we show that a transversely higher-order defect mode can be designed to be confined by a photonic bandgap in such a thick slab. Using simulations, we show that a high…
A rarely seen terephthalato-bridged dinuclear copper(II) complex, [Cu2(CMP)2(TPA)]·[Cu2(CMP)2(MeOH)2(TPA)]·2H2O (CMP = 4-chloro-2-[(2-isopropylaminoethylimino)methyl]pheno- late, TPA = terephthalate), has been prepared and characterized by elemental analysis, infrared spectrum, and single crystal X-ray determination.…
We report an experimental and theoretical study on the alignment error tolerance of a 2 µm-size solid immersion lens (SIL) illuminated by different types of focused spots. Tightly confined focal spots are of great interest for improving the performance of many optical systems, so that a study on the alignment toleranc…
Abstract In this report, we describe the characterizations and applications of hybrid nanoparticles. These nanoparticles have been synthesized by combination of organometallic, polymerization process and functionalized with a specific peptide for targeting expressed serpin‐enzyme complex (SEC) receptor of human hepato…
The spin-polarized electron momentum density along the [100] direction of Eu(Fe0.89Co0.11)2As2 was measured using Magnetic Compton Scattering (MCS). Measurements were performed at different temperatures and applied external magnetic fields. These results provide the first direct insight into the orbital interactions t…
We have prepared Mn1.1Sb1 − y Al y (0 < y ≤ 0.2) and Mn1.1Sb1 − y Si y (0 < y ≤ 0.1) solid solutions with the B8 structure, in which the aluminum and silicon atoms substitute for antimony in the anion sublattice of manganese antimonide. Magnetic measurements have shown that substitutions within the stability region of…
Influence of the order parameter symmetries on the cutoff parameter ξh and vortex core size ξ2 (the distance from the vortex center at which the current density reaches the maximum value) in the mixed state are investigated in the framework of Eilenberger theory for unconventional superconductors. The cutoff parameter…
The structure and luminescent properties of lightly doped CaF 2 :Pr crystals and Ca 0.65 Pr 0.35 F 2.35 solid solution have been studied. The results demonstrate that the evolution of the emission spectra of the crystals with increasing PrF 3 concentration can be understood in terms of the structural changes in the fl…
The distortions of MnO6 octahedra in layered manganites La0.4Ca2.6Mn2O7, which play a key role in the structure transformations and physical properties, were investigated by using a 200 kV high-resolution transmission electron microscope. Tetragonal, orthorhombic (superstructure), and monoclinic phases were found to c…