Materials Literature
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Background and aims – Phenotypic plasticity is the morphological response of a single genotype to produce several different physiological and/or morphological types under changing environmental conditions. Desmodesmus, a green alga, has been well documented for its phenotypic responses (e.g. colony transformation to u…
This work demonstrates an electrically tunable silicon nitride (SiN) micro-ring resonator with polymer-stabilized blue phase liquid crystals (PSBPLCs) cladding. An external vertical electric field is applied to modulate the refractive index of the PSBPLCs by exploiting its fast-response Kerr effect-induced birefringen…
The new generation of synthetic nanomaterials, upconversion nanoparticles (UCNPs), have the potential for high-contrast optical imaging of biological tissue by virtue of their unique luminescent properties which enable the autofluorescence and excitation signals to be completely suppressed and avoid biotissue absorpti…
The Turnbull relation is widely believed to enable prediction of solid–liquid interface (SLI) free energies from measurements of the latent heat and the solid density. Ewing proposed an additional contribution to the SLI free energy to account for variations in liquid structure near the interface. In the present study…
To improve the piezoelectric properties of sol–gel-derived BiFeO 3 films for MEMS application, (100) oriented films were prepared by using LaNiO 3 bottom electrodes, which have preferential (100) orientation on Si substrates. The microstructure of the films crystalized at 450 and 500 °C was a layered granular structur…
Water transmission and distribution systems are critical urban infrastructure. The aging of water mains can lead to increased breakage rate, decreased hydraulic capacity, and deterioration of water quality. Condition assessment of water mains encompasses building computational model of failures, discerning distress in…
Simulating the dynamics of a semiflexible polymer across time and length scales that bridge the rigid and flexible regimes requires a physically sound method for generating coarse-grained representations of the polymer. Here, we study the dynamic behavior of the discrete stretchable, shearable wormlike chain model, wh…
Two novel 3D compounds based on Keggin heteropoly blue anion-chains, [Na(H2O)2{MI(btp)}4(PWVI8WV4O39)] (M = Cu (1), Ag (2), btp = 1,3-bis(1,2,4-triazol-1-yl)propane), have been hydrothermally synthesized and characterized by elemental analysis, IR, TG, PXRD and single crystal X-ray diffraction. In compounds 1 and 2, t…
We have investigated the effects of surface passivation on off-state leakage current and current collapse effects of high-voltage GaN-on-Si hetero-junction field effect transistors (HFETs) by using low pressure chemical vapor deposition (LPCVD) of silicon nitride (SiN x ). In this work, the metal–oxide–semiconductor (…
In this study, using ultrasonic method, nanoparticles of a new phosphoramide compound and its cobalt nitrate and cadmium nitrate complexes with formula (4-NO2-C6H4NH)P(O)Cl(NH-C5H4N-2) = L (1), Co(NO3)2(L)(CH3OH) (2), Cd(NO3)2(L)(CH3OH) (3) were synthesized and characterized by 31P, 1H, 13C NMR, fourier transform infr…
Series catalysts of Ru-SnOx/Al2O3 with varying SnOx loading of 0–3 wt% were prepared, and their catalytic activity and selectivity have been discussed and compared for the selective hydrogenation of m-dinitrobenzene (m-DNB) to m-nitroaniline (m-NAN). The Ru-SnOx/Al2O3 catalysts were characterized by X-ray powder diffr…
ABSTRACT New donor–π–acceptor organic (D–π–A) dyes composed of triarylamine, oligothiophene, and phosphole subunits were prepared, and their optical and photovoltaic properties were investigated. The regioselective α‐lithiation of the thiophene ring of 2‐(thiophen‐2‐yl)phospholes bearing an ester group, followed by tr…
Large and small aggregates of Aβ peptides, resembling the morphology and dimensions of fibrillar and oligomeric forms of Aβ respectively, relevant to Alzheimer's disease, are stabilized on electrodes using self-assembly. Both of these forms were found to bind redox active Cu and heme, resulting in active sites having…
The photophysics of flavins is highly dependent on their environment. For example, 4a-hydroxy flavins display weak fluorescence in solution, but exhibit strong fluorescence when bound to a protein. To understand this behavior, we performed temperature-dependent fluorescent studies on an N(5)-alkylated 4a-hydroxy flavi…
The impeding effect of plant surfaces covered with three-dimensional wax on attachment and locomotion of insects has been shown previously in numerous experimental studies. The aim of this study was to examine the effect of different parameters of crystalline wax coverage on insect attachment. We performed traction ex…
Abstract This review considers for the first time the effects in heterogeneous catalysis of grain boundaries (GB) created as a result of consolidation of catalytic materials nanoparticles without their sintering. Different methods proposed for quantitative characterization of nanoparticles consolidation extent were co…
Abstract Reduction of CO2 by direct one‐electron activation is extraordinarily difficult because of the −1.9 V reduction potential of CO2. Demonstrated herein is reduction of aqueous CO2 to CO with greater than 90 % product selectivity by direct one‐electron reduction to CO2.− by solvated electrons. Illumination of in…
We present a novel drug carrier consisting of plasmonic hollow gold nanoshells (HGN) chemically tethered to liposomes made temperature sensitive with lysolipids (LTSL). Continuous-wave irradiation by physiologically friendly near infra-red light at 800 nm for 2.5 minutes at laser intensities an order of magnitude belo…
Bonding processes play a significant role in the wood and furniture industry. They allow for the creation of fixed joining of construction elements, creation of new materials and, last but not least, aesthetic appreciation of parts. However, the quality of bonded joints is affected by many factors, one of which is the…
DNA methylation plays a pivotal role in the genetic evolution of both embryonic and adult cells. For adult somatic cells, the location and dynamics of methylation have been very precisely pinned down with the 5-cytosine markers on cytosine-phosphate-guanine (CpG) units. Unusual methylation on CpG islands is identified…