Materials Literature
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ABSTRACT This work focuses on largely toughening poly(lactic acid)/thermoplastic polyurethane (PLA/TPU) blend with lower content (20 wt %) of TPU using appropriate contents of 4,4‐methylene diphenyl diisocyanate (MDI) via simple melt blending. Both scanning electron micrographs and differential scanning calorimetry cu…
The ability to tune exchange (magnetic) interactions between $3d$ transition metals in perovskite structures has proven to be a powerful route to discovery of novel properties. Here we demonstrate that the introduction of $3d\text{\ensuremath{-}}5d$ exchange pathways in double perovskites enables additional tunability…
Semiconductor quantum dot (QD) superlattices, which are periodically ordered three-dimensional (3D) array structures of QDs, are expected to exhibit novel photo-optical properties arising from the resonant interactions between adjacent QDs. Since the resonant interactions such as long-range dipole-dipole Coulomb coupl…
Abstract Graphene is usually considered a chemically inert material. Theoretical studies of CO adsorption on free‐standing graphene predict quite low adsorption energies (<0.1 eV). However, we show here by vibrational spectroscopy and scanning tunneling microscopy that the nondissociative chemisorption of CO occurs…
BACKGROUND: Multi-walled carbon nanotubes (MWCNTs) represent a human health risk as mice exposed by inhalation display pulmonary fibrosis. Production of IL-1β via inflammasome activation is a mechanism of MWCNT-induced acute inflammation and has been implicated in chronic fibrogenesis. Mice sensitized to allergens hav…
ABSTRACT Polypyrrole nanotubes with diameter 60–400 nm are synthesized with methyl orange as template and various oxidants, iron(III) chloride hexahydrate, iron(III) sulfate hydrate, and ammonium peroxydisulfate. The highest electrical conductivity of compressed pellets, 66 S cm −1 , is found for iron(III) chloride. R…
We propose a fringing-effect model based on the experimentally measured phase response across the phase transition region of a liquid crystal on silicon (LCOS) device. The measured phase profile in the phase transition region is characterized by a scaled error function of the flyback width. The flyback width can be de…
The ability to synthesize semiconductor nanowires with deterministic and tunable control of orientation and morphology on a wide range of substrates, while high precision and repeatability are maintained, is a challenge currently faced for the development of many nanoscale material systems. Here we show that atomic la…
The effect of B-site cation ordering on the room temperature structural and ferromagnetic resonance (FMR) properties of single crystal spinel lithium ferrite (LiFe5O8, LFO) have been investigated. A detailed microstructural analysis is done through X-ray diffraction, polarized Raman spectroscopy, and transmission elec…
One of the key factors affecting the economic viability and safe deployment of wood pellet fired systems on a large scale is wood pellet stability. Wood pellets are extremely moisture unstable and present significant problems during the transportation, storage and handling stages of their lifetime. This study proposes…
The structural and magnetic properties of seven CeMn2Ge(2-x)Six compounds with x = 0.0-2.0 have been investigated in detail. Substitution of Ge with Si leads to a monotonic decrease of both a and c along with concomitant contraction of the unit cell volume and significant modifications of the magnetic states - a cross…
BACKGROUND INFORMATION: Tunneling nanotubes (TnTs) are thin plasma membrane bridges mediating transfers of materials and signals between cells. Heterogeneity of heterocellular and homocellular TnTs is largely described but ultrafine imaging of these light-sensitive floating nanometric structures represents a real chal…
The selective oxidation of methanol to formaldehyde with molecular O 2 on Au–Pd alloy surfaces has been studied by using density functional theory (DFT). We show that the existence of Pd remarkably improves the adsorption and activation of O 2 on Au–Pd surfaces. In particular, the second-neighbor Pd monomer pair (Pd–S…
The preparation of the first racemic bis(pyrazol-1-yl)methane-based NNCp-donor hybrid scorpionate/cyclopentadienyl magnesium and zinc complexes [Mg(R)(κ 2 -η 5 -NNCp)] ( 1 – 6 ) [NNCp = bpztcp, R = Me ( 1 ), Et ( 2 ), CH 2 SiMe 3 ( 3 ); bpzpcp, R = Me ( 4 ), Et ( 5 ), CH 2 SiMe 3 ( 6 )] and [Zn(R)(κ 2 -η 1 -NNCp)] ( 7…
The encapsulating N1,N3-bis(3-methoxysalicylidene)diethylenetriamine (H2valdien) ligand was employed to isolate two novel Dy(III) compounds which contain rare bridging pathways for lanthanide systems. Compound 1, [Na2Dy(III)2(valdien)2(μ-OH)(dbm)2(H2O)2][Na2Dy(III)2(valdien)2(μ-OH)(NO3)2(dbm)2], where dbm(-) is dibenz…
Microbial synthesis of nanoparticles has a potential to develop simple, cost-effective and eco-friendly methods for production of technologically important materials. Silver nanoparticles are playing an important role in biomedical and various applications. In this study, we present a biological method for synthesis o…
Green composites, a bio‐based polymer matrix is reinforced by natural fibers, are special class of bio‐composites. Interest about green composites is continuously growing because they are environment‐friendly. This study describes the preparation and mechanical characterization of green composites using polylactic aci…
The spin chemistry of photoinduced charge-separated (CS) states of three triads comprising one or two triarylamine donors, a cyclometalated iridium complex sensitizer and a naphthalene diimide (NDI) acceptor, was investigated by transient absorption spectroscopy in the ns-μs time regime. Strong magnetic-field effects…
A slow-light effect based on metamaterial-induced transparency (MIT) possesses great practical applications for integrated photonic devices. However, to date, only very weak slow-light effects have been obtained in metamaterials because of the intrinsic loss of metal. Moreover, no active control of slow-light has been…
ABSTRACT Poly(lactic acid) (PLA) nanocomposites characterized by multifunctional end‐use properties are of high interest as new biosourced materials for the production of smart films, fibers, and injection‐molded components. In this work, PLA–ZnO nanocomposites designed for the extrusion of films were obtained by melt…