Nanomaterials

Boron nitride nanosheets show promise as antibacterial drugs

By Lisa McDonald / June 24, 2022

Some materials being investigated for use as antimicrobial agents face the limitation that they cannot tell the difference between bacteria and mammalian cells. Researchers led by Soochow University found boron nitride nanosheets do not face this limitation.

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Clay locomotion and clean water

By Jonathon Foreman / June 17, 2022

Many of the world’s easily accessible freshwater sources are being drained faster than they are being replenished. In two recent papers, researchers led by Jilin University investigated the potential of a clay-based self-propelling nanomotor to purify water.

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MXenes and student perspectives on hope, plus more inside June/July 2022 ACerS Bulletin

By Lisa McDonald / June 16, 2022

The June/July 2022 issue of the ACerS Bulletin—featuring MXenes and student perspectives on hope—is now available online. Plus—new C&GM.

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Metalens may simplify generation and control of vacuum UV light

By Lisa McDonald / May 17, 2022

Vacuum UV light, while beneficial in biomedical and nanoprocessing applications, is difficult to generate and control using current methods. Researchers led by Rice University developed a metalens that can both generate and manipulate vacuum UV light.

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Revealing secrets of the past—nanoscale engineering gave historic glaze its iridescence

By Lisa McDonald / May 13, 2022

As new analysis methods are developed and refined, researchers can illuminate the science behind past techniques that were designed through trial and error. A group led by researchers from the California Institute of Technology used advanced analytical techniques to show how nanoscale engineering gave a historic purple overglaze its distinctive iridescence.

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A new horizon for fertilizers—iron oxide nanomaterials support efficient soybean production

By Lisa McDonald / January 21, 2022

The use of nanotechnology as crop fertilizers is a growing area of interest for farmers. A new study led by Jiangnan University researchers compares the performance of fertilizers based on iron oxide nanomaterials to typical iron chelate fertilizers in promoting soybean growth.

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Heartening advancements—researchers explore potential of inhalable particles to treat cardiovascular diseases

By Lisa McDonald / January 18, 2022

Inhalable medicine offers several advantages over injections. Researchers in Italy explored the development of inhalable drug-loaded calcium phosphate nanoparticles for treating myocardial cells in the heart.

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Beyond the cobalt bind—researchers investigate feasibility of nanoceramics as binder in cemented carbide tools

By Lisa McDonald / January 7, 2022

Cobalt is a main material used as the binder in cemented carbides, but there are drawbacks to using this metal. Ceramic phases have started attracting significant attention as alternative binders, and a recent study dives further into the feasibility of using nanoceramics as a binder.

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Excess aluminum extends Hall-Petch relation in nanocrystalline ceramics

By Lisa McDonald / November 5, 2021

The Hall-Petch relation describes how a ceramic becomes harder as its grains become smaller. But when the grains become small enough, the relation begins to break down. Luis Sotelo Martin and Ricardo Castro of the University of California, Davis, showed that adding extra aluminum to zinc aluminate can extend the Hall-Petch relation.

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A ‘hole’ new approach to metalens design

By Lisa McDonald / October 22, 2021

Traditionally, metalenses use nanoscale arrays of columns or fin-like structures to focus light. In a new open-access paper, researchers at the Harvard John A. Paulson School of Engineering and Applied Sciences developed a metalens that uses very deep, very narrow holes instead.

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