We report that hybridizing semiconductor quantum dots with plasmonic metamaterial leads to a multi-fold intensity increase and narrowing of their photoluminescence spectrum. The luminescence enhancement is clear manifestation the cavity electrodynamics Purcell effect can be controlled by metamaterial's design. This observation an essential step towards understanding loss compensation in metamaterials gain media for developing metamaterial-enhanced media.

Various types of cell voltage equalizers that exchange charges among cells have been proposed for series-connected lithium-ion cells. During equalization, are possibly cycled not only over a conventional period ranges from seconds to hours but at high frequency is equal the operating as well. This paper investigates how high-frequency cycling occurs and factor affects life performance during cycling. Experiments on charge-discharge frequencies 1-100 kHz were performed The capacity below 10...

Silicon carbide ceramics which 5 mass% Al2O3 and 2 Y2O3 were added to prepared by the spark plasma sintering (SPS) method under conditions of 30 MPa min. Mechanical properties at room temperature eximined. The SPS brought dense silicon a 1800°C, was about 200°C lower than that hot-pressing process. obtained had higher strength fracture toughness those hot-pressing. results suggest inside sintered bodies during measured temperature.

Supercapacitors (SCs), which are mainly used in high-power applications, can be potential energy storage sources for alternative battery applications once their outstanding cycle life performance at wide temperature ranges is considered. Because the of SCs inherently long, aging acceleration and prediction primary importance practical usage. In this paper, feasibility accelerated testing investigated a model established. Charge-discharge cycling tests were performed various conditions 3.8...

A solar power satellite (SPS) is a renewable energy system that converts the sun's into electricity in space and transmits it to Earth using microwaves. The SPS concept, first proposed 1968 United States, has recently started attracting increased public attention as promising can be used resolve global environmental problems. One of most challenging technologies for microwave transmission from geostationary orbit ground. have been studied more than 40 years since initial demonstrations...

The cell voltage imbalance of series-connected energy storage cells, such as supercapacitors (SCs) and lithium-ion causes premature deterioration a decrease in the available energies cells. Various equalization techniques have been developed for diminishing imbalances. However, since number switches, sensors, and/or multiwinding transformers present conventional equalizers is directly proportional to series connections circuit complexity cost are prone increase with connections. In this...

Surface-functionalized β-Ga2O3 and diamond substrates were directly bonded by annealing at 250 °C in atmospheric air. Prior to bonding, the surfaces OH-terminated oxygen plasma irradiation H2SO4/H2O2 cleaning, respectively. After contacting with each other, direct bonding was formed a thermal dehydration reaction. The annealed specimen had shear strength of 14 MPa because generation chemical bonds between surfaces. analysis interface structures revealed that atomically without nano-voids,...

The novel bridging ligand 1,8-bis(2,2':6',2"-terpyridyl)anthracene (btpyan) is synthesized by three reactions from 1,8-diformylanthracene to connect two [Ru(L)(OH)]+ units (L = 3,6-di-tert-butyl-1,2-benzoquinone (3,6-tBu2qui) and 2,2'-bipyridine (bpy)). An addition of tBuOK (2.0 equiv) a methanolic solution [RuII2(OH)2(3,6-tBu2qui)2(btpyan)](SbF6)2 ([1](SbF6)2) results in the generation [RuII2(O)2(3,6-tBu2sq)2(btpyan)]0 (3,6-tBu2sq 3,6-di-tert-butyl-1,2-semiquinone) due reduction quinone...

We report the synthesis of open-ended MoS2 nanotubes and their application as catalyst for methanation carbon monoxide with hydrogen. Because catalysis reaction occurs at relatively low temperatures, such may provide new solutions toward harnessing environmental load caused by CO emission.

Abstract Transmission electron microscopy (TEM) observations were made for Au/TiO 2 catalysts prepared by calcination in air at different temperatures from room temperature to 873 K order study the growth process of Au particles over surface TiO . Many clusters with diameters ∼1 nm observed on when Au(OH) 3 /TiO precursor deposition precipitation method was calcined below 473 K. They grew form larger being trapped interface between above 573 The became markedly rapid 673 during discussed...

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSuper-drawing of ultrahigh molecular weight polyethylene. 1. Effect techniques on drawing single crystal matsTetsuo Kanamoto, Akeharu Tsuruta, Koji Tanaka, Masatami Takeda, and Roger S. PorterCite this: Macromolecules 1988, 21, 2, 470–477Publication Date (Print):February 1, 1988Publication History Published online1 May 2002Published inissue 1 February...

The atomic and electronic structures of $\text{Au}∕{\text{TiO}}_{2}(110)$ systems have been investigated theoretically based on the density-functional theory. We examined Au adsorption three types ${\text{TiO}}_{2}(110)$ surfaces with different stoichiometry defects; stoichiometric surface, surface formed by removing bridging-oxygen atoms (Ti-rich surface), sixfold Ti (O-rich surface). For stable site for adatom is hollow surrounded one two in-plane oxygen or on-top above fivefold atom....

Cell voltage equalizers are necessary to ensure years of operation for series-connected supercapacitors (SCs) by eliminating cell imbalance. Conventional require numerous switches and/or magnetic components; hence, the circuit complexity and size tend increase. In this paper, a double-switch single-transformer equalizer, which is based on combination half-bridge inverter multiplier, proposed. The proposed equalizer analyzed in detail, dc equivalent mathematically derived. Experimental...

Abstract A 0.5‐inch Ultra Extended Graphics Array (UXGA) organic light‐emitting diodes microdisplay has been developed with 6.3 μm pixel pitch. Not only 4032 ppi high resolution but frame rate, low power consumption, wide viewing angle, and luminance have achieved. This newly is suitable for Near‐to‐Eye display applications, especially electronic viewfinders.

Au-core/Pt-shell bimetallic clusters have been loaded on the surface of TiO2 (Au(x wt %)−Pt(y %)−TiO2(Pt/Au atomic ratio, z)) in a highly dispersed state by two-step method consisting Au deposition and subsequent Pt photodeposition. The mean diameter metal particles increases as result from 3.6 (x = 0.39, y 0, z 0) to 4.3 nm 0.37, 0.74, 2.0), while their number density hardly changes. High-resolution transmission electron spectroscopy directly confirms an structure for sample (z 0.82)....