Materials Literature
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Self-heating effects in organic electronic devices are investigated by impedance spectroscopy (IS). A temperature modulation of the admittance couples the gigantic imaginary part of the capacitance to its small real part, which results in negative capacitance at low frequencies with high bias. We present a model to ex…
Nanocrystalline Bi 1− x La x FeO 3 ( x = 0, 0.05, 0.1, 0.2, and 0.3) powders with particle sizes of about 50–90 nm were prepared by a simple co-precipitation method. The prepared powders were characterized by X-ray diffraction (XRD), Fourier trans form infrared spectroscopy (FT-IR), scanning electron microscopy (SEM),…
We have studied the effect of samarium doping concentration and thermal annealing on X-ray induced defect centers, including phosphorus-oxygen hole and electron centers (POHC and POEC), in Sm3+-doped fluorophosphate glasses towards developing a potential high-dose, high-resolution detector for microbeam radiation ther…
High Resolution Image Download MS PowerPoint Slide A new 5,5-dimethylphlorin derivative ( 3H(Phl CF 3 ) ) was prepared and studied through a combination of redox, photophysical, and computational experiments. The phlorin macrocycle is significantly distorted from planarity compared to more traditional tetrapyrrole arc…
BACKGROUND: The growth and development of the posterior silk gland and the biosynthesis of the silk core protein at the fifth larval instar stage of Bombyx mori are of paramount importance for silk production. RESULTS: Here, aided by next-generation sequencing and microarry assay, we profile 1,229 microRNAs (miRNAs),…
New nonlinear optical (NLO) TmCa4O(BO3)3 (TmCOB) crystals were grown by the Czochralski method. X-ray powder diffraction results indicated that TmCOB crystals belong to the monoclinic system with space group Cm. The unit cell parameters were calculated to be a = 8.0679 Å, b = 16.0140 Å, c = 3.5224 Å, with α = γ = 90°…
Probing the validity of classical macroscopic physical laws at the nanoscale is important for nanoscience research. Herein, we report on experimental evidence that electron emission from individual hot carbon nanotubes (CNTs) heated by self-Joule-heating does not obey Richardson's law of thermionic emission. By using…
We report on the simulation of the nanoindentation process of monolayer MoS 2 using molecular-dynamics simulations and a density-functional based tight-binding method. A circular sheet of MoS 2 with clamped boundaries was indented by a slowly moved tip, which deformed and finally pierced the layer. We found the Young’…
In this work, ammonium polyphosphate (APP) was microencapsulated by UV-curable epoxy acrylate (EA) resin. The resulting novel EA-microencapsulated APP (EA-APP) was characterized by Fourier transform infrared spectra, X-ray photoelectron spectroscopy, X-ray diffraction, scanning electron microscopy, granulometry, and t…
Kinetics of lithium-ion transfer at the interface between oxide-negative electrodes and organic electrolytes was studied using a Li 4 Ti 5 O 12 thin-film electrode and ac impedance spectroscopy. We evaluated the activation energies of the interfacial lithium-ion transfer from the temperature dependences of the interfa…
We have studied magnetic interactions in phase pure Mn3O4 and composite Mn2O3/Mn3O4 nanoparticle systems having different interparticle separations between the Mn3O4 ferrimagnetic cores. We characterized the morphology and structure of these nanoparticles using x-ray diffraction and transmission electron microscopy. W…
We study theoretically the optical properties of a two-dimensional lattice of metallic (gold) nanorods immersed within a nematic liquid crystal (NLC) strongly anchored to the surface of the nanorods. The distribution of the director field of the NLC is found by minimising the corresponding total free energy via simula…
Novel amphiphilic organic asymmetrically oligo(p-phenyleneethynylene) (OPE) conjugated molecules, ending with a hydrophobic alkyl chain and a hydrophilic methoxypolyethyleneglycol (MPEG) segment, were designed and synthesized. Due to the hydrophilic–hydrophobic nature of the asymmetrically amphiphilic OPE conjugated m…
Protein-DNA interactions play a major role in all aspects of genetic activity within an organism, such as transcription, packaging, rearrangement, replication and repair. The molecular detail of protein-DNA interactions can be best visualized through crystallography, and structures emphasizing insight into the princip…
Intercalated poly(amide-imide) (PAI)/modified layered double hydroxide (LDH) nanocomposites (NC)s were synthesized by the solution intercalation method. Modified LDH was synthesized from the co-precipitation reaction of the Al(NO3)3 · 9H2O, Mg(NO3)2 · 6H2O and N,N’-(pyromellitoyl)-bis-valine under ultrasound irradiati…
By means of the first-principles computations, we investigated the electronic and magnetic properties of zigzag and armchair boron nitride nanoribbons (BNNRs) with triangular vacancy defects, where two series of triangular defects with different sizes are considered by sampling the N-vacancies V N, V 3N+B, and V 6N+3B…
Well axis-oriented V 2 O 5 thin films were fabricated on Si 3 N 4 /SiO 2 /Si substrates by metal–organic decomposition (MOD). These films were reduced to VO x films by heat treatment, and the films had temperature coefficient of resistances (TCRs) of 3.2–3.7%/K at 300 K. Then VO x thin film on Si 3 N 4 /SiO 2 membrane…
Polyhydroxyalkanoates (PHAs) have been demonstrated to be a family of biopolymers with good biodegradability and biocompatibility. Designed scaffolds comprising natural and synthetic materials are now widely used in the reconstruction of damaged tissues especially neural tissues. Polyhydroxyalkanoate scaffolds with pr…
The high versatility and ease of electrospinning of polymer solutions have recently resulted in electrospun fibers, which are of interest for a wide variety of chemical and biomedical applications. This is partially due to the high surface area of the fibers, which is attractive for the detection and capture of (bio)c…
Abstract Currently, use of poly(lactic acid) (PLA) is limited for commercial applications because it has a low heat resistance. In this research, an increase of over 40°C heat distortion temperature (HDT) of PLA alloy was obtained by blending PLA with polycarbonate (PC) and a chain extender (CE). Molecular weight, the…