Results 1 to 10 of about 41,667 (158)

Multi-field nanoindentation apparatus for measuring local mechanical properties of materials in external magnetic and electric fields [PDF]

open access: greenReview of Scientific Instruments, 2013
Nano/micro-scale mechanical properties of multiferroic materials can be controlled by the external magnetic or electric field due to the coupling interaction. For the first time, a modularized multi-field nanoindentation apparatus for carrying out testing on materials in external magnetostatic/electrostatic field is constructed.
Hao Zhou   +5 more
openalex   +5 more sources

An apparatus for studying electrical breakdown in liquid helium at 0.4 K and testing electrode materials for the neutron electric dipole moment experiment at the Spallation Neutron Source [PDF]

open access: bronzeReview of Scientific Instruments, 2016
We have constructed an apparatus to study DC electrical breakdown in liquid helium at temperatures as low as 0.4 K and at pressures between the saturated vapor pressure and ∼600 Torr. The apparatus can house a set of electrodes that are 12 cm in diameter with a gap of 1–2 cm between them, and a potential up to ±50 kV can be applied to each electrode ...
T. M. Ito   +16 more
openalex   +5 more sources

Sunlight tracking and concentrating accelerated weathering test applied in weatherability evaluation and service life prediction of polymeric materials: A review

open access: yesPolymer Testing, 2021
Artificial accelerated aging tests, which usually expose materials to artificial light sources and simulated environment conditions, are commonly conducted to evaluate weatherability and service life of polymeric materials.
Jiaxiang Qin   +12 more
doaj   +1 more source

Ultrasonic brazing of Zr-based bulk metallic glass and 1060 Al alloy using Zn-3Al filler metal

open access: yesJournal of Advanced Joining Processes, 2022
Ultrasonic brazing of Zr-based bulk metallic glasses (Zr-BMG) and 1060-Al alloy dissimilar was realized by using a Zn-3Al filler metal. A firm metallurgical bonding was obtained at the dissimilar joint interfaces.
Xingyi Zhang   +6 more
doaj   +1 more source

Controllable and Scale-Up Synthesis of Nickel-Cobalt Boride@Borate/RGO Nanoflakes via Reactive Impingement Mixing: A High-Performance Supercapacitor Electrode and Electrocatalyst

open access: yesFrontiers in Chemistry, 2022
Large-scale synthesis of graphene-based nanomaterials in stirred tank reactor (STR) often results in serious agglomeration because of the poor control during micromixing process.
Yudan Qian   +12 more
doaj   +1 more source

Simple hydrogen gas production method using waste silicon

open access: yesResults in Materials, 2022
We investigated a simple and safe method for producing hydrogen using Si powder, which is discarded in the semiconductor industry. Using the reaction of generating hydrogen from Si powder and an aqueous NaOH solution, a simple hydrogen generator that ...
Susumu Nakayama   +2 more
doaj   +1 more source

Life-cycle energy demand comparison of medium voltage Silicon IGBT and Silicon Carbide MOSFET power semiconductor modules in railway traction applications

open access: yesPower Electronic Devices and Components, 2023
Power semiconductors process roughly 70 % of global energy, with a higher percentage expected as worldwide transport electrification, renewables and wide-band-gap (WBG) semiconductors are implemented, significantly affecting global energy savings.
Lucas Barroso Spejo   +3 more
doaj   +1 more source

Apparatus for Seebeck coefficient and electrical resistivity measurements of bulk thermoelectric materials at high temperature [PDF]

open access: yesReview of Scientific Instruments, 2005
A high temperature Seebeck coefficient and electrical resistivity measurement apparatus has been designed and built for measuring advanced thermoelectric materials. The apparatus covers the range of temperatures from 300to1300K. Different sources of errors involved in the two measurements are discussed.
Zhou, Zhenhua, Uher, Ctirad
openaire   +2 more sources

Thermodynamic analysis on a magnetic refrigeration system

open access: yesInternational Journal of Air-Conditioning and Refrigeration, 2023
Magnetic refrigeration utilizes the magnetocaloric effect of a magnetic material, whose temperature changes according to the change of magnetic field strength.
Jong Suk Lee
doaj   +1 more source

Experimental apparatus for the determination of thermal conductivity and humidity in building materials by means of electrical permittivity measurements

open access: yesRivista Tema, 2021
The on-site measurement of the thermal properties of existing building envelopes is of utmost importance to fairly accurately calculate the thermal loss by transmission to the outside environment and so to define the building overall energy performance.
Perinelli, Alessio   +4 more
openaire   +3 more sources

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