Results 81 to 90 of about 20,211 (214)

Covalent Organic Framework‐Based Photocatalysts from Synthesis to Applications

open access: yesENERGY &ENVIRONMENTAL MATERIALS, Volume 8, Issue 6, November 2025.
This review explores the principles, synthesis, and reactions of COFs, highlighting their structural influences on photocatalytic activity. It presents key applications of COFs as photocatalyst. Various modification strategies for optimizing their efficiency are discussed.
Junxian Liu   +5 more
wiley   +1 more source

Impact of Sonication Treatment on Physicochemical Properties of Carbon Blacks and Pt/C Catalysts in Proton Exchange Membrane Fuel Cells

open access: yesParticle &Particle Systems Characterization, Volume 42, Issue 11, November 2025.
Here it is revealed how ultrasonic dispersion chemically and structurally alters Pt/C catalysts depending on carbon black type. While high surface area carbons remain stable, low and medium surface area carbons undergo oxidation, increasing charge‐transfer resistance and degrading fuel cell performance.
Adib Caidi   +5 more
wiley   +1 more source

The Quest for the Most Spherical Bubble [PDF]

open access: yes, 2013
We describe a recently realized experiment producing the most spherical cavitation bubbles today. The bubbles grow inside a liquid from a point-plasma generated by a nanosecond laser pulse. Unlike in previous studies, the laser is focussed by a parabolic
de Bosset, Aurele   +5 more
core   +2 more sources

Sonochemical activation for BaTiO3 synthesis: A rapid and efficient route to the tetragonal phase

open access: yesInternational Journal of Applied Ceramic Technology, Volume 22, Issue 6, November/December 2025.
Abstract Barium titanate is a highly promising ferroelectric material, but its synthesis is often based on lengthy and complex processes. This paper presents the development of an ultrafast synthesis route for producing high‐purity tetragonal BaTiO3. The method combines a brief sonochemical activation (15 min) with conventional calcination. Compared to
E. C. Silva   +9 more
wiley   +1 more source

Experiments on Sonoluminescence: Possible Nuclear and QED Aspects and Optical Applications [PDF]

open access: yes, 1999
Experiments aimed at testing some hypothesis about the nature of Single Bubble Sonoluminescence are discussed. A possibility to search for micro-traces of thermonuclear neutrons is analyzed, with the aid of original low-background neutron counter ...
Belyaev, V. B.   +6 more
core   +2 more sources

Flow Analysis in Pathological Microvascular Models by Ultrasound Localization Microscopy

open access: yesAdvanced Materials Technologies, Volume 10, Issue 19, October 7, 2025.
This study presents a new platform combining ultrasound localization microscopy with biomimetic gelatin phantoms to analyze flow dynamics in small vessels with narrowing or obstructions. Using microbubble tracking, the method enables high‐resolution velocity mapping in 100–500 µm channels, revealing flow changes in pathological microvascular conditions
Yarin Gershman   +3 more
wiley   +1 more source

Effect of sonochemical impact on the duration of fresh juices storage

open access: yesНовые технологии, 2019
At present in Russia there is a tendency of increased consumption of natural fruit and vegetable juices by the population. A large proportion falls on 100% fresh juice.
V. A. Demchenko   +3 more
doaj   +1 more source

How to Produce Green Hydrogen from Olivine and Seawater? By Ultrasound

open access: yesChemSusChem, Volume 18, Issue 18, September 23, 2025.
Power ultrasound provides efficient production of green hydrogen from olivine and seawater under near‐ambient conditions. The sonochemical alteration of olivine involves particle fragmentation, the removal of the passivating layer, and local, transient heating in the vicinity of collapsing bubbles.
Sergey I. Nikitenko, Tony Chave
wiley   +1 more source

Asymmetric reactions in sonochemistry

open access: yesUltrasonics Sonochemistry, 2001
Sonochemical processes involved in asymmetric synthesis are reviewed. The goal of this overview is to provide a comprehensive picture about the fields of both enantioselective and diastereoselective reactions accelerated or initiated by ultrasounds.
B, Török   +3 more
openaire   +2 more sources

Personal navigator for visual impaired person utilizing galvanic vestibular stimulator [PDF]

open access: yes, 2013
Electronic industry is growing fast by introducing new product and technology to the society. The technology helps to enhance human daily life by promoting easy and modern life.
Md Sarif, Nur Azhani
core  

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