Materials Literature
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A new homologous series of intermetallic compounds containing three-dimensional (3-d) tetrahedral frameworks of gold atoms, akin to hexagonal diamond, have been discovered in four related Sr-Au-Al systems: (I) hexagonal SrAl3-xAu4+x (0.06(1) ≤ x ≤ 0.46(1), P62m, Z = 3, a = 8.633(1)-8.664(1) Å, c = 7.083(2)-7.107(1) Å)…
Pulsed electroacoustic (PEA) method is a very popular method for measurement of charge in dielectrics. In this method, an acoustic wave proportional to charge is generated by a pulsed HV. The acoustic wave traverses several material layers before being sensed and converted to electrical signal by a piezoelectric trans…
With the advent of systematically designed controllable reversible addition–fragmentation termination (CRAFT) compounds, we have identified structure–property relationships related to the RAFT compositional structure as it impacts photoplasticity in covalent adaptable networks (CANs). In this study, we have expanded t…
Eu-doped fluorosilicate apatites M2Y3[SiO4]3F (M = Sr, Ba) are prepared by solid state reaction. Unlike conventional Eu-doped materials, coexistence of Eu3+ and Eu2+ ions is found from the photoluminescence of Eu-doped apatites M2Y3[SiO4]3F (M = Sr, Ba) which were prepared in reducing atmosphere. Eu2+ ions are convert…
We discuss the sign change of superconducting order parameters in both real and reciprocal spaces when the odd parity spin singlet pairing proposed recently by Hu [Phys. Rev. X 3, 031004 (2013)] is allowed. We show that in this case an nodeless antiphase ${s}^{\ifmmode\pm\else\textpm\fi{}}$ can be generated. In a 2-Fe…
Porous biodegradable polymeric foams loaded with drugs have potential applications in tissue engineering and sustained delivery systems. A single-step process using supercritical CO 2 as a foaming and carrier agent was used for the impregnation of 5-fluorouracil in polylactide and poly(lactide- co -glycolide) probes.…
A series of 2,6-bis[aryl(alkyl)sulfonyl]anilines were synthesized by nucleophilic aromatic substitution of 2,6-dichloronitrobenzene with various aryl or alkyl thiolates (benzyl-, phenyl-, 2-naphthyl-, and 2-aminophenyl thiolate), followed by hydrogenation and subsequent oxidation. All prepared 2,6-bis[aryl-(alkyl)sulf…
Plasmonic gold nanoassemblies that self-assemble with the aid of linking molecules or polymers have the potential to yield controlled hierarchies of morphologies and consequently result in materials with tailored optical (e.g., localized surface plasmon resonances (LSPR)) and spectroscopic properties (e.g., surface-en…
This study presents the fabrication of ZnO nanosheets on a glass substrate using a room-temperature (approximately 25 °C) solution method. The average length and diameter of the ZnO nanosheets were 1.2 μm and approximately 5 nm, respectively. The ultraviolet (UV)-to-visible rejection ratio of the sample is approximate…
ABSTRACT A green‐chemistry approach to improve the moisture resistance of soy flour (SF)‐based wood adhesive is described. Chemical phosphorylation of SF (PSF), using POCl 3 as the phosphorylating agent, dramatically increased its wet bond strength. The optimum POCl 3 :SF ratio that produced maximum wet bond strength…
The goal of this study was to document if lakes in National Parks in Washington have exceeded critical levels of nitrogen (N) deposition, as observed in other Western States. We measured atmospheric N deposition, lake water quality, and sediment diatoms at our study lakes. Water chemistry showed that our study lakes w…
A single‐phase multicolor emitting phosphor, Ca 3 Al 2 O 6 :Ce 3+ ,Li + , was prepared by a solid‐state reaction. When the Ce 3+ concentration is lower than 0.030 (molar ratio in Ca 3 Al 2 O 6 ), yellow and greenish blue emissions can be observed under the excitation by a blue and a near UV light, respectively. The ye…
Compact voltage tunable phase shifters on yttrium iron garnet/lead magnesium niobate lead titanate heterostructure are presented. A comparison of E-field tunability between 1-layer PMN-PT structure and two-layer PMN-PT structure using bending mode is discussed. The device exhibited a phase shift of 119 ° under an elec…
Most previous investigations on foam concrete have been confined to portland cement and the density range of 400–1,600 kg/m3. The present study aims to develop a new foam concrete with a density ranging from 250 to 400 kg/m3 by replacing portland cement with magnesia phosphate cement (MPC). Extensive laboratory tests…
This paper presents the conceptual design, operating principle, simplified geometric model-based parametric analysis, experimental driving characterization, and working performance verification of a rotary actuator using shape memory alloy (SMA) wires. To achieve the research goal for developing a bidirectional SMA ro…
Conjugated conducting polymer actuators, especially those based on polypyrrole (PPy), possess enormous potential for the creation of biomimetic devices, single-cell manipulators, numerous biomedical applications as well as robotics and prosthetics. This is due to their low actuation voltage, ability to operate at the…
To promote heat dissipation in power electronics, we investigated the thermal conduction performance of Sn-Bi solder paste between two Cu plates. We measured the thermal resistance of Sn-Bi solder paste used as thermal interface material (TIM) by laser flash technique, and a thermal resistance less than 5 mm2 K/W was…
This paper aims at elucidating the origin of the high thermoelectric power factor of p-type (Ag x SbTe x /2+1.5 ) 15 (GeTe) 85 (TAGS) thermoelectric materials with 0.4 ⩽ x ⩽ 1.2. All samples exhibit good thermoelectric figures of merit ( zT) which reach 1.5 at 700 K for x = 0.6. Thermoelectric and thermomagnetic trans…
In this letter, Mg-doped ZnO nanorods were fabricated successfully on a glass substrate at 80°C by hydrothermal method. The visible-blind photodetectors show good stability properties in ultraviolet (UV) illumination. The resulting Mg-doped ZnO nanorods have excellent potential for application in a UV photodetector be…
Herein we describe a room-temperature, chemical process to transform silver nanocrystal solids, deposited from colloidal solutions, into highly conductive, corrosion-resistant, optical and electronic materials with nanometer-scale architectures. After assembling the nanocrystal solids, we treated them with a set of si…