Results 71 to 80 of about 1,862,685 (344)

Probing polymer chain constraint and synergistic effects in nylon 6-clay nanocomposites and nylon 6-silica flake sub-micro composites with nanomechanics [PDF]

open access: yes, 2015
In this study, we report that a synergistic effect exists in the surface mechanical properties of nylon 6–clay nanocomposites (NC) that can be shown by nanomechanical testing.
Beake, BD   +4 more
core   +1 more source

Single-element elliptical hard x-ray micro-optics

open access: yesOptics Express, 2003
Using micro-fabrication techniques, we have manufactured a single element kinoform lens in single-crystal silicon with an elliptical profile for 12.398 keV (1A) x-rays. By fabricating a lens that is optimized at fixed wavelengths, absorption in the lens material can be significantly reduced by removing 2_ phase-shifting regions.
Kenneth, Evans-Lutterodt   +12 more
openaire   +2 more sources

Laser‐Induced Graphene from Waste Almond Shells

open access: yesAdvanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova   +9 more
wiley   +1 more source

3D‐Printed Sulfur‐Derived Polymers With Controlled Architectures for Lithium‐Sulfur Batteries

open access: yesAdvanced Functional Materials, EarlyView.
Rheology‐guided formulation design for direct ink writing enables the fabrication of 3D sulfur copolymer cathodes with controlled architectures for lithium‐sulfur batteries. The printed electrodes exhibit multiscale porosity and high sulfur utilization, delivering enhanced electrochemical performance compared to conventional cast electrodes.
Bin Ling   +7 more
wiley   +1 more source

Effect of curing modes on micro-hardness of dual-cure resin cements

open access: yesRestorative Dentistry & Endodontics, 2011
Objectives The purpose of this study was to evaluate curing degree of three dual-cure resin cements with the elapsed time in self-cure and dual-cure mode by means of the repeated measure of micro-hardness.
Ki-Deok Lee,   +3 more
doaj   +1 more source

Effect of Structural and Phase Changes under Relativistic Electron Pulsed Beam Irradiation on the Aluminum Alloys Micro-hardness

open access: yesФізика і хімія твердого тіла, 2021
The paper studies the distinctive features of micro-hardness value changes in the zone of industrial aluminum alloy 1933 and alloy 1380 irradiated by the relativistic electron beam.
V.V. Bryukhovetsky   +6 more
doaj   +1 more source

Pengaruh Arus Terhadap Struktur Mikro Dan Sifat Mekanik Produk Las Tembaga Dan Baja Karbon Dengan Metode Tungsten Inert Gas (TIG) [PDF]

open access: yes, 2015
This research is to unveil the chemical composition, micro structure and hardness value on metal used on TIG welding and also to unveil the current effect used toward the quality of welding product. The materials used are copper and carbon steel alloy
, Tri Widodo Besar Riyadi, ST, MSc, Ph.D   +1 more
core  

Formation of Stable Amorphous Calcium Phosphate and Collagen Assemblies by a Versatile Spray‐Drying Approach

open access: yesAdvanced Functional Materials, EarlyView.
Amorphous calcium phosphate (ACP) microparticles with long‐term and thermal stability are prepared with or without collagen using a scalable one‐pot spray‐drying process. Under simulated physiological conditions, they crystallize into biomimetic bone mineral and, when combined with collagen, form extrudable, fibrillar bone‐like 3D constructs.
Camila Bussola Tovani   +13 more
wiley   +1 more source

ISE of Precious Metals: Au, Ag, Pd, and Pt

open access: yesMetals
Precious metals play an important role in various fields, from industry to jewelry and finance. In the industrial field, it is often necessary to know their mechanical properties. Micro-hardness measurement is a suitable test.
Lenka Girmanová   +5 more
doaj   +1 more source

PENGARUH VARIASI MEDIA PENDINGIN TERHADAP KEKERASAN DAN STRUKTUR MIKRO HASIL REMELTING Al-Si BERBASIS LIMBAH PISTON BEKAS DENGAN PERLAKUAN DEGASSING [PDF]

open access: yes, 2013
The purpose of this study was (1) Determine the effect of the variation media cooling to hardness remelting of Al-Si based used piston waste with degassing treatment, (2) Determine the effect of the variation cooling media to micro structure ...
Harjanto, Budi   +2 more
core  

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