Materials Literature
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A facile method has been developed to synthesize a high-quality platinum nanoparticle (PtNP) decorated graphene via one-step γ-ray induced reduction of graphite oxide (GO) and chloroplatinic acid at room temperature. GO and Pt(IV) precursor salt could be co-reduced by the electrons generated from the radiolysis of eth…
Both silicon and silica nanoparticles (SiNPs and SiO2NPs, respectively) are currently considered to be promising carriers for targeted drug delivery. However, the available data on their in vivo toxicity are limited. The present study was aimed at investigation of SiNP and SiO2NP (mean diameter 10 and 13 nm, respectiv…
This manuscript presents the Raman characterization of the stable carbon materials found in a special type of soil, named Terra Preta de Índio (Indian Dark Earths). The Terras Pretas de Índios have been studied as a potential model for sustainable agriculture in the humid tropics. The stability of organic matter and t…
Lanthanide(III) complexes [Ln(R-tpy)(cur)(NO3)2] (Ln = La(III) in 1, 2; Gd(III) in 5, 6) and [Ln(R-tpy)(scur)(NO3)2] (Ln = La(III) in 3, 4; Gd(III) in 7, 8), where R-tpy is 4′-phenyl-2,2′:6′,2′′-terpyridine (ph-tpy in 1, 3, 5, 7), 4′-(1-pyrenyl)-2,2′:6′,2′′-terpyridine (py-tpy in 2, 4, 6, 8), Hcur is curcumin (in 1, 2…
A unique feature of nematic liquid crystals is orientational order of molecules that can be controlled by electromagnetic fields, surface modifications and pressure gradients. Here we demonstrate a new effect in which the orientation of nematic liquid crystal molecules is altered by thermal expansion. Thermal expansio…
The electronic structure and optical conductivities of 20 so-called MAX phases Ti${}_{3}$AC${}_{2}$ (A $=$ Al, Si, Ge), Ti${}_{2}$AC (A $=$ Al, Ga, In, Si, Ge, Sn, P, As, S), Ti${}_{2}$AlN, M${}_{2}$AlC (M $=$ V, Nb, Cr), and Ta${}_{n}$${}_{+1}$AlC${}_{n}$ ($n$ $=$ 1 to 4) are studied using the first-principles orthog…
Iron undergoes a bcc to close-packed structural phase transition under pressure, at around 13 GPa, as shown by diamond anvil and shock experiments. Atomistic simulations have been able to provide insights into the transition, but without any plasticity occurring before the phase change, in single crystals, defective s…
Since the discovery of high temperature superconductivity in iron pnictides in early 2008, many iron-based superconductors with different structures have been discovered, with the highest transition temperature to date being 57 K. By the end of 2010, another kind of new superconductor, the Fe-based chalcogenide K(1-x)…
In this paper, rattle-type Co3O4@SiO2 nanoparticles were prepared via thermal decomposition of Co3[Co(CN)6]2@SiO2 core–shell nanocubes. The uniform Co3[Co(CN)6]2 nanocubes were coated with porous silica and then calcined at 550 °C for 1 h to generate a large amount of Co3O4 nanocrystals in a cube-shaped silica nanocap…
Three heterometallic cluster complexes {Ln(12)Mo(4)} featuring an Ln(12) core of a distorted truncated tetrahedron were synthesized with the assistance of four MoO(4)(2-) anions as ancillary ligands. Magnetic studies of the {Gd(12)Mo(4)} cluster revealed a large magnetocaloric effect due to the presence of the large n…
We demonstrate a chiral meta-molecule in the ultraviolet (UV) and visible (VIS) regions using a complex of Au nanoparticles (NPs) and rod-shaped tobacco mosaic virus (TMV). Au NPs five nm in diameter are uniformly formed on peptide-modified TMV. The peptide-modified TMV with uniform-sized Au NPs has improved dispersio…
Novel biodegradable polymeric nanoparticles composed of β-cyclodextrin and poly(β-amino ester) segments have been developed for sustained drug delivery across the blood-brain barrier (BBB). The nanoparticles have been synthesized by cross-linking β-cyclodextrin with poly(β-amino ester) via the Michael addition method.…
Abstract Fascinating nematic‐ and smectic‐like self‐assembled arrays are observed for gold nanorods partially capped with either laterally or terminally attached nematic liquid crystals upon slow evaporation of an organic solvent on TEM grids. These arrays can be manipulated and reoriented by applying an external magn…
The cellular uptake of narrowly dispersed LDH {[Mg3Al(OH)8](CO3)0.5} nanoparticles into the Mouse Motor Neuron (NSC 34) cell line has been studied. The effect of LDH concentration and incubation time on the cellular uptake was investigated using fluorescein isothiocyanate (FITC) labelled LDH nanoparticles. We observed…
Er 3+ ‐doped Ca Bi 4 Ti 4 O 15 ( CBT ) bismuth layer structured ferroelectric ceramics were synthesized by the solid state method. Photoluminescence (UC), dielectric, ferroelectric, and piezoelectric properties were systematically studied for the first time. The Er 3+ ‐doped CBT sample showed a bright up‐conversion UC…
Abstract Thermochemical metal/metal oxide redox reactions have twice the energy density of 2,4,6‐trinitrotoluene (TNT). They suffer, however, from low pressure‐volume work due to low gas expansion from the reaction. This study focuses on the development of a nanocomposite that delivers a high energy density and the po…
The major ampullate (MA) silk of spider is known to be composed of oriented β-sheet nanocrystals dispersed within an amorphous matrix. The presence of an interphase has also been proposed, but it has not been reported for the fibroin of the silkworm Bombyx mori (B. mori). To obtain quantitative information regarding t…
The dominant physical transport processes are analyzed in a free-surface microfluidic and surface-enhanced Raman spectroscopy (SERS) chemical detection system. The analysis describes the characteristic fluid dynamics and mass transport effects occurring in a microfluidic detection system whose analyte absorption and c…
In situ annealing within a neutron beam line and ex situ annealing followed by transmission electron microscopy were used to study the thermal stability of the texture, microstructure, and bi-metal interface in bulk nanolamellar Cu/Nb composites (h = 18 nm individual layer thickness) fabricated via accumulative roll b…
The morphology of crystalline precipitates in a solid-state matrix is governed by complex but tractable energetic considerations driven largely by volume strain energy minimization and anisotropy of interfacial energies. Spherical precipitate morphologies are favored by isotropic systems, while anisotropic interfacial…