Materials Literature
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Graphene nanoribbons (GNR) are one of the most promising candidates for the fabrication of graphene-based nanoelectronic devices such as high mobility field effect transistors (FET). Here, we report a high-yield fabrication of a high quality another type of GNR analogue, fully flattened carbon nanotubes (flattened CNT…
Polarization switching and energy storage properties of highly (100) oriented antiferroelectric (AFE) (Pb,La)(Zr,Ti)O3 thin films (≤250 nm) deposited via a sol-gel process with both LaNiO3 and Pt top electrodes were investigated. By using LaNiO3 top electrodes, the energy density as well as energy efficiency can be en…
C a B i 2 N b 2 O 9 ceramic is a promising candidate for high‐temperature piezoelectric applications due to its high C urie temperature. However, extremely low piezoelectric properties hinder its application. A combination of S m 3+ donor doping and texturing was applied to address this problem. Piezoelectric coeffici…
Cardanol, an agricultural byproduct of the cashew industry, is a cheap and abundantly available renewable resource. The multifunctional activity of cardanol in the rubber and polymer industries has been well-established in recent years. The present study highlights the chemical grafting of cardanol onto natural rubber…
We propose three color filters (red, green, blue) based on a two-dimensional (2D) grating, which maintain the same perceived specular colors for a broad range of incident angles with the average polarization. Particle swarm optimization (PSO) method is employed to design these filters for the first time to our knowled…
A 4-way Heavy-Duty Diesel (HDD) emissions control aftertreatment system typically consists of diesel oxidation catalyst (DOC), catalyzed soot filter (CSF), urea-based selective catalytic NOx reduction (SCR) and NH₃ slip control catalyst (AMOX). Incorporating the SCR functionality into the soot filter (SCRoF) has great…
In this letter, we study metamaterials made out of resonant electric wires arranged on a spatial scale much smaller than the free space wavelength, and we show that they present a hybridization band that is insensible to positional disorder. We experimentally demonstrate defect cavities in disordered and ordered sampl…
Gold nanoshells with varying surface topographies and tunable SPR bands were synthesized in high yields by the templated surfactant-assisted seed growth method. By changing the types and amounts of surfactants and ionic additives in the growth solution, the nanoshell topography was controlled from smooth shells to hig…
We report current hysteresis in response to applied voltage in graphene quantum dots of average diameter 4.5 ± 0.55 nm, synthesized electrochemically using multiwalled carbon nanotubes. In response to step voltages, transient current decay, characteristic of deep and shallow level charge traps with time constants 186…
Unexpected, excellent antisintering property of highly loaded AuNPs is observed when extra-large mesoporous silica EP-FDU-12 (cage size >25 nm) is used as the supports. The average particle size of the entrapped AuNPs after 550 °C calcination approaches 25.6 ± 5.2 nm at the gold loading amount of 5.0 wt %, but it grea…
Abstract We are interested in the phase transformation from austenite to martensite. This transformation is typically accompanied by the generation and growth of small inclusions of martensite. We consider a model from geometrically linear elasticity with sharp energy penalization for phase boundaries. Focusing on a c…
We have investigated the phonon spectra of pulsed laser deposited Sr2CoO4 thin film and its evolution with temperature using Raman spectroscopy. The magnetic measurement reveals magnetic transition at temperature TC = 255 K. No structural phase transition is observed in the investigated temperature range (100-300 K).…
Reactivity Controlled Compression Ignition (RCCI) has demonstrated diesel-like or better brake thermal efficiency with significant reductions in nitrogen oxide (NOX) and particulate matter (PM) emissions. Hydrocarbon (HC) and carbon monoxide (CO) emission levels, on the other hand, are higher and similar to those of p…
In this study, a technique based on poly(dopamine) deposition to promote cell adhesion was investigated for the application in bone tissue engineering. The adhesion and proliferation of rat osteoblasts were evaluated on poly(dopamine)-coated biodegradable polymer films, such as polycaprolactone, poly(l-lactide) and po…
The dielectric breakdown properties of SF6–N2 mixtures were investigated at different concentrations of N2, 0.01–1.6 MPa, and 300–3000 K. The equilibrium compositions of different SF6–N2 mixtures at several gas pressures and temperatures up to 3000 K were first calculated by minimizing the Gibbs free energy under the…
A homologous series of ring-contracted corrinoids, the 10-heterocorroles H2(XCor), is now available as the free-base ligand set. While the higher homologues, 10-thia- and 10-selenacorrole, show a porphyrin-like spectroscopic behavior, 10-oxacorrole displays lower aromatic character and has the smallest N4 cavity of al…
This article reviews work done at authors’ laboratories about catalysts based on combinations between copper and ceria for preferential oxidation of CO in H2-rich streams (CO-PROX). The main focus of this review is the characterization of active sites for the process on the basis of spectroscopic analysis of the syste…
The temperature scaling of dynamic hysteresis was investigated in Mn-doped Pb(Mn1/3Sb2/3)O3-Pb(Zr,Ti)O3 ceramic with internal bias field. A set of simple linear temperature scaling relations were established for hysteresis area 〈A〉, coercivity Ec, and internal bias field Ei, which are different from the power-law scal…
Coupled-cluster methods offer unprecedented accuracy for a wide range of chemically important properties, but the steep scaling of computational cost with system size makes widespread use challenging. Local approximations, building on the short-range nature of electron correlation effects in insulators, help a great d…
Single and dual-beam irradiations of oxide (c-ZrO2, MgO, Gd2Ti2O7) and carbide (SiC) single crystals were performed to study combined effects of nuclear (Sn) and electronic (Se) energy losses. Rutherford backscattering experiments in channeling conditions show that the Sn/Se cooperation induces a strong decrease of th…