Tweezers of sound can pick objects up without physical contact
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Tokyo, Japan - Researchers from Tokyo Metropolitan University have developed a new technology which allows non-contact manipulation of small objects using sound waves. They used a hemispherical array of ultrasound transducers to generate a 3D acoustic fields which stably trapped and lifted a small polystyrene ball from a reflective surface. Although their technique employs a method similar to laser trapping in biology, adaptable to a wider range of particle sizes and materials.
Researchers from Xi'an Jiaotong-Liverpool University have found that an impurity present in many industrial pigmentations drastically reduces the strength and longevity of green architectural concrete.
The lithium-ion battery is the future of sustainable energy technology, but drastic volume fluctuations in their anodes related to enhanced battery capacity raises a safety concern. Recently, researchers from the Republic of Korea have found that embedding manganese selenide anodes in a 3D carbon nanosheet matrix is an innovative, simple, and low-cost means of reducing drastic volume expansion while improving the energy density of these batteries.
An international research team has come up with an innovative method for metal recovery from industrial waste. The new method allows the simultaneous recovery of multiple metals from waste oxides in a single process. This novel route will lower the burden on waste storage facilities with significant contributions to the economic and environmental sustainability of industrial waste management. The study was published in Journal of Environmental Management.
New European Union regulations on batteries could offer a huge boost to the global decarbonisation mission - but only if it leverages its political and economic weight to ensure a fairer global marketplace.
The discovery of a Roman road submerged in the Venice Lagoon is reported in Scientific Reports this week.
Scientists proposed zero-dimensional molecular sieve membranes that could enhance the separation selectivity of hydrogen and carbon dioxide.
The importance of aryl sulfides in biologically active compounds has led chemists to develop methods to synthesize them from carbon-sulfur bond forming reactions. The conventional reaction, however, uses thiols that are foul-smelling and toxic. Now, chemists from Waseda University, Japan, report a novel, thiol-free synthesis technique comprising a nickel-catalyzed aryl exchange between 2-pyridyl sulfide and aromatic esters, providing a versatile and inexpensive technology for both scientific and industrial applications.
In Philadelphia, when a home received repairs through a city-funded program, total crime dropped by 21.9% on that block, and as the number of repaired houses on a block increased, instances of crime fell even further, according to research from the Perelman School of Medicine at the University of Pennsylvania published today in JAMA Network Open.
A new study of COVID-19 shutdowns in the United States reveals pronounced disparities in air pollution -- with disenfranchised, minority neighborhoods still experiencing more exposure to a harmful air pollutant compared to wealthier, white communities.