Results 41 to 50 of about 6,255 (180)

Wireless Precise Manipulation of Tumor Spheroids Using a Millirobot Controlled by Permanent Magnetic Traps

open access: yesAdvanced Robotics Research, EarlyView.
A magnetic donut‐like millirobot is developed for label‐free pick‐and‐place of a tumor spheroid wirelessly controlled by a magnetic trap. Spheroids are important 3D multicellular culture systems that recapitulate key structural and functional features of native tissues.
Yue Gao   +8 more
wiley   +1 more source

Bidirectional Soft Catalysts for Improved Power Performance of Li‐S Batteries

open access: yesAdvanced Science, EarlyView.
A soft polymer‐metal catalyst is integrated into the binder to create a catalytically active microenvironment that accelerates bidirectional sulfur redox kinetics in lithium‐sulfur batteries. A model polyvinyl alcohol‐Cu catalyst enables high areal capacities at demanding current densities and stable cycling in pouch‐cell prototypes at 0.5 C, achieving
Maleesha M. Nishshanke   +7 more
wiley   +1 more source

Modification of concrete by hydrothermal nanosilica [PDF]

open access: yesНанотехнологии в строительстве, 2019
The paper shows the possibility to use hydrothermal nanosilica as a modifying additive to increase the strength of concrete based on portland cement.
Vadim V. Potapov   +2 more
doaj   +1 more source

Fabrication of Si nanopowder and application to hydrogen generation and photoluminescent material

open access: yes, 2017
Si nanopowder is fabricated using the simple beads milling method. Fabricated Si nanopowder reacts with water in the neutral pH region between 7 and 9 to generate hydrogen.
Kentaro Imamura   +3 more
core   +1 more source

Nanopowder as sintering aid for water-atomized ferrous powder [PDF]

open access: yes, 2021
Press and sinter powder metallurgy steels are cost-effective solutions for structural applications. There is a constant drive for improvement in the density of these powder metallurgy steels to expand their usage in high-performance applications.
Manchili, Swathi Kiranmayee
core  

Effect of bismuth ion substitution on structural properties of zinc ferrite nanoparticles [PDF]

open access: yesProcessing and Application of Ceramics, 2016
Bismuth doped nano zinc ferrite particles having the general formula ZnFe2-xBixO4 (x = 0.00, 0.05, 0.10, 0.15, 0.20 and 0.25) were synthesized by sol-gel combustion method. The effect of bismuth doping on structural properties were investigated.
Naraavula Suresh Kumar   +1 more
doaj   +1 more source

Multidimensionality in fluidized nanopowder agglomerates

open access: yesAIP Conference Proceedings, 2013
recent years, the interest in fluidization as a mean to process nanoparticles is strongly increasing. Due to the small size of the nanoparticles, which makes van der Waals forces predominate, they do not fluidize as single particles but as agglomerates.
De Martin, L. (author)   +2 more
openaire   +3 more sources

Coordination‐Asymmetry‐Regulated Reconstruction of Electron‐Rich Cu Sites for pH‐Dependent Nitrate‐to‐Ammonia Electrocatalysis

open access: yesAdvanced Science, EarlyView.
Distinct initial Cu coordination environments drive different pH‐dependent structural evolution pathways, resulting in divergent nitrate reduction activity and behavior. ABSTRACT Electrocatalytic nitrate reduction reaction (e‐NO3RR) offers a promising route to valorize nitrate‐contaminated wastewater while enabling sustainable ammonia production ...
Shih‐Ching Huang   +11 more
wiley   +1 more source

Low temperature sintering of corundum powders

open access: yesИзвестия Томского политехнического университета: Инжиниринг георесурсов, 2018
Relevance of the research is caused by the necessity of profound processing of raw mineral and perfection of technology of obtaining alumoxide ceramic.
Sergey Veniaminovich Matrenin   +2 more
doaj   +2 more sources

Analysis of Iron Oxide Reduction Kinetics in the Nanometric Scale Using Hydrogen

open access: yesNanomaterials, 2020
Iron nanopowder could be used as a sintering aid to water-atomised steel powder to improve the sintered density of metallurgical (PM) compacts. For the sintering process to be efficient, the inevitable surface oxide on the nanopowder must be reduced at ...
Swathi K. Manchili   +3 more
doaj   +1 more source

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