Results 81 to 90 of about 989,853 (279)

Guiding Ketogenic Diet with Breath Acetone Sensors

open access: yesSensors, 2018
Ketogenic diet (KD; high fat, low carb) is a standard treatment for obesity, neurological diseases (e.g., refractory epilepsy) and a promising method for athletes to improve their endurance performance.
Andreas T. Güntner   +8 more
doaj   +1 more source

Theory of spin-polarized transport in ferromagnet-semiconductor structures: Unified description of ballistic and diffusive transport

open access: yes, 2005
A theory of spin-polarized electron transport in ferromagnet-semiconductor heterostructures, based on a unified semiclassical description of ballistic and diffusive transport in semiconductors, is outlined.
Lipperheide, R., Wille, U.
core   +1 more source

Enhancing Direct Solar Water Splitting via ALD of Multifunctional TiO2/Pt Nanoparticle Coatings With Engineered Interfaces to GaAs/GaInP Tandem Cells

open access: yesAdvanced Functional Materials, EarlyView.
Multifunctional atomic layer deposited coatings and interface treatments enhance direct solar water splitting on GaAs/GaInP tandem cells. Optimized TiO2/Pt nanoparticle bilayers ensure durability and catalytic efficiency with minimal optical losses, while H2 plasma pretreatments maximize photovoltage and interfacial charge extraction.
Tim F. Rieth   +8 more
wiley   +1 more source

Back wall solar cell [PDF]

open access: yes, 1978
A solar cell is disclosed which comprises a first semiconductor material of one conductivity type with one face having the same conductivity type but more heavily doped to form a field region arranged to receive the radiant energy to be converted to ...
Brandhorst, H. W., Jr.
core   +1 more source

Pentagonal 2D Altermagnets: Material Screening and Altermagnetic Tunneling Junction Device Application

open access: yesAdvanced Functional Materials, EarlyView.
From a database of 170 pentagonal 2D materials, 4 candidates exhibiting altermagnetic ordering are screened. Furthermore, the spin‐splitting and unconventional boundary states in the pentagonal 2D altermagnetic monolayer MnS2 are investigated. A MnS2‐based altermagnetic tunneling junction is designed and, through ab initio quantum transport simulations,
Jianhua Wang   +8 more
wiley   +1 more source

Synthesis, structure, semiconductive and photoluminescent properties of [{Eu(NC5H4COOH)3(H2O)2}(1.5ZnCl4)•(2H2O)]n [PDF]

open access: yesJournal of the Serbian Chemical Society, 2009
A novel bimetallic 4f–3d metal-isonicotinic acid inorganic–organic hybrid complex [{Eu(NC5H4COOH)3(H2O)2}(1.5ZnCl4)•(2H2O)]n (1) was synthesized via a hydrothermal reaction and structurally characterized by single-crystal X-ray diffraction.
YA-PING XU   +3 more
doaj  

Representative longitudinal optical phonon modes in polar semiconductor quantum dots

open access: yes, 2012
Existence of representative longitudinal optical (LO) phonon modes is theoretically discussed for the case of polar semiconductor cylindrical quantum dots embedded in a semiconductor matrix. The approach is developed within the dielectric continuum model
Barna, Valentin   +2 more
core   +1 more source

Unassisted Photoelectrochemical Hydrogen Production Coupled with Selective Glucose Oxidation Using Metal Halide Perovskite Photoanodes

open access: yesAdvanced Functional Materials, EarlyView.
A metal halide perovskite‐based photoanode integrated with a CoNiFe layered double hydroxide (LDH) cocatalyst is reported for selective glucose oxidation reaction (GOR), achieving simultaneous and unassisted photoelectrochemical hydrogen production. This system delivers high photocurrent density, excellent Faradaic efficiency of GOR, and strong techno ...
Shujie Zhou   +12 more
wiley   +1 more source

Semicondutores heteroestruturados: uma abordagem sobre os principais desafios para a obtenção e aplicação em processos fotoquímicos ambientais e energéticos

open access: yesQuímica Nova
Heterostructured semiconductors are materials with unique features formed by combination of two or more semiconductors with suitable interface between them.
Romero T. Bueno   +4 more
doaj   +1 more source

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