Results 61 to 70 of about 19,486 (279)

Fabrication and Characterization of MWCNTs Decorated ZnO Nanograins Based Sensor for Enhanced Performance Toward CO2 Gas

open access: yesAdvanced Materials Interfaces, EarlyView.
The present work is concerned with the fabrication of CO2 sensors based on MWCNTs/ZnO material, which is obtained by RF magnetron sputtering and electron‐beam deposition methods. The sensor exhibits highly sensitive and selective behavior, high repeatability, and temporal stability at low CO2 concentrations.
Mikayel Aleksanyan   +6 more
wiley   +1 more source

Electronic Materials with Wide Band Gap: Recent Developments [PDF]

open access: yes, 2014
The development of semiconductor electronics is shortly reviewed, beginning with the development of germanium devices (band gap $E_g=0.66$ eV) after world war II.
Klimm, D.
core   +4 more sources

Analytical Description of Nanowires: Morphing Wurtzite Structure Cross Sections to Match Arbitrary Convex Shapes

open access: yesAdvanced Theory and Simulations, EarlyView.
Analytic morphing of wurtzite nanowire cross sections to arbitrary shapes yields numbers of nanowire atoms, of bonds between these and of nanowire interface bonds, plus the nanowire cross section area. The ratios of above variables help to interpret any spectroscopic nanowire data which depend on diameter and cross section shape, and can be applied to ...
Dirk König, Sean C. Smith
wiley   +1 more source

Interaction between sphalerite and pyrite and its effect on surface oxidation of sphalerite

open access: yesPhysicochemical Problems of Mineral Processing, 2017
Physicochemical Problems of Mineral Processing; ISSN 2084 ...
Bo Yang   +4 more
openaire   +3 more sources

Ferromagnetism in sphalerite and wurtzite CdS nanostructures [PDF]

open access: yesNanoscale Research Letters, 2013
Abstract Room-temperature ferromagnetism is observed in undoped sphalerite and wurtzite CdS nanostructures which are synthesized by hydrothermal methods. Scanning electron microscopy and transmission electron microscopy results indicate that the sphalerite CdS samples show a spherical-like shape and the wurtzite CdS ones show a flower-like ...
Yang, Zhaolong   +6 more
openaire   +4 more sources

Isotope‐Enriched Cubic Boron Arsenide with Ultrahigh Thermal Conductivity

open access: yesAdvanced Science, EarlyView.
The high‐quality isotope‐enriched cubic boron arsenide crystals that enhance the thermal conductivity of c‐BAs are synthesized and measured at a room temperature thermal conductivity of 1500 W m−1 K−1 for the c‐11BAs. This value is the highest thermal conductivity among known semiconductor materials.
Jaehoon Kim   +3 more
wiley   +1 more source

Origin, ore forming fluid evolution and timing of the Logrosán Sn-(W) ore deposits (Central Iberian Zone, Spain) [PDF]

open access: yes, 2016
The Logrosán Sn–(W) ore deposits in the metallogenic Sn–W province of the European Variscan Belt consist of endo- and exogranitic greisen-type and quartz–cassiterite veins associated with a S-type granite. Mineral characterization, fluid inclusion study,
Barfod, Dan N.   +4 more
core   +1 more source

Resonant Spin Amplification and Accumulation in MAPbI3 Single Crystals

open access: yesAdvanced Science, EarlyView.
Carrier spin dynamics are studied in a 20 µm thin MAPbI3 perovskite single crystal using time‐resolved Kerr ellipticity at cryogenic temperatures. Long spin relaxation (30 ns) and dephasing (21 ns) enable spin accumulation. Spin accumulation effects are discussed in detail along with carrier‐nuclear spin interactions.
Erik Kirstein   +6 more
wiley   +1 more source

A mineral reconnaissance survey of the Abington-Biggar-Moffat-area, south-central Scotland [PDF]

open access: yes, 1979
Panned heavy mineral concentrates, mostly obtained from stream sediments, were collected from 195 sites in the Abington-Biggar-Moffat area. The project area, which lies immediately east of the formerly important mining district of Wanlockhead ...
Dawson, J., Floyd, J.D., Phillip, P.R.
core  

Development of a Nb‐Based Semiconductor‐Superconductor Hybrid 2DEG Platform

open access: yesAdvanced Electronic Materials, EarlyView.
Development of a new hybrid material using Nb and NbTi superconductors on an InAs quantum well using an epitaxial Al interlayer to prevent intermixing. Optimizing this structure lead to high‐quality interfaces and resulted in a Josephson junction with an induced superconducting gap of 1.0 meV. These results highlight the importance of interface quality
Sjoerd Telkamp   +14 more
wiley   +1 more source

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