Results 221 to 230 of about 142,095 (261)
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Defect Engineering for Fuel‐Cell Electrocatalysts
Advanced Materials, 2020AbstractThe commercialization of fuel cells, such as proton exchange membrane fuel cells and direct methanol/formic acid fuel cells, is hampered by their poor stability, high cost, fuel crossover, and the sluggish kinetics of platinum (Pt) and Pt‐based electrocatalysts for both the cathodic oxygen reduction reaction (ORR) and the anodic hydrogen ...
Wei Li +8 more
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Engineered Planar Defects Embedded in Opals
Advanced Materials, 2004A method for the fabrication of engineered planar defects inside opals (see Figure) is presented. These defects act as photonic microcavities, introducing a localized state in the gap. The scalability of the defect allows for the tuning of the spectral position of the defect by changing the size of the defect relative to the periodicity of the lattice.
Palacios-Lidón, E. +3 more
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Engineered cartilage heals skull defects
American Journal of Orthodontics and Dentofacial Orthopedics, 2010The purposes of this study were to differentiate embryonic limb bud cells into cartilage, characterize the nodules produced, and determine their ability to heal a mouse skull defect.Aggregated mouse limb bud cells (E12-E12.5), cultured in a bioreactor for 3 weeks, were analyzed by histology or implanted in 6 skull defects. Six controls had no implants.
Lan, Doan +7 more
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Defect engineering in germanium
physica status solidi (a), 2013State of the art nanoelectronic devices are mainly fabricated on silicon (Si). In order to take advantage of the properties of germanium (Ge) in advanced electronic nanodevices all steps of device fabrication must be controlled. This, in particular, concerns the diffusion, doping, and activation of dopants in Ge.
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Fundamentals and engineering of defects
Progress in Crystal Growth and Characterization of Materials, 2016Abstract An overview of the important defect types, their origins and interactions during the bulk crystal growth from the melt and selected epitaxial processes is given. The equilibrium and nonequilibrium thermodynamics, kinetics and interaction principles are considered as driving forces of defect generation, incorporation and assembling.
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Surfaces and interfaces for controlled defect engineering
2008 9th International Conference on Solid-State and Integrated-Circuit Technology, 2008ABSTRACTThe behavior of point defects within silicon can be changed significantly by controlling the chemical state at the surface. In ultrashallow junction applications for integrated circuits, such effects can be exploited to reduce transient enhanced diffusion, increase dopant activation, and reduce end-of-range damage.
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Defect Control and Defect Engineering of Transition-metal Silicides
MRS Proceedings, 2006AbstractThe microstructure, defect structure and thermoelectric properties of two different semiconducting transition-metal silicides, ReSi1.75 and Ru2Si3 upon alloying with a substitutional element with a valence electron number different from that of the constituent metal have been investigated in order to see if the crystal and defect structures of ...
Haruyuki Inui +2 more
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Defect engineering of titanium dioxide: full defect disorder
Advances in Applied Ceramics, 2012AbstractTitanium dioxide (rutile) is known as n-type semiconductor. Recent studies show that prolonged oxidation of pure n-type TiO2 may lead to its conversion into a p-type semiconductor. It has been documented that the conversion is associated with the formation of titanium vacancies.
Bak, Tadeusz (R14000) +3 more
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Surface-assisted defect engineering of point defects in ZnO
Applied Physics Letters, 2016Semiconductor surfaces facilitate the injection of highly mobile point defects into the underlying bulk, thereby offering a special means to manipulate bulk defect concentrations. The present work combines diffusion experiments and first-principles calculations for polar ZnO (0001) surface to demonstrate such manipulation.
Prashun Gorai +2 more
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Defect engineered Ti-MOFs and their applications
Chemical Society ReviewsThis review systematically classifies Ti-MOFs by node types, surveys defect synthesis and applications, discusses structural challenges, and inspires new defect engineering pathways.
Guo-Ying Han +10 more
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