Nanomaterials

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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Carbon nanotubes improve toughness and functionality of oxide ceramic composites

By Jonathon Foreman / October 19, 2021

Recent articles on carbon nanotube-containing ceramic composites showed improved properties compared to the original ceramic composite. Two recent articles in ACerS journals demonstrate these improvements.

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To bilayers and beyond—researchers overcome the single-atomic-layer limit of borophene

By Lisa McDonald / August 31, 2021

Synthesizing multilayer borophene is difficult because of the tendency of boron atoms to cluster. Researchers at Northwestern and Rice Universities discovered they could synthesize bilayer borophene by growing it on a special silver substrate.

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Unlocking thermogravimetric analysis in the fight against ‘fake’ graphene

By Lisa McDonald / August 10, 2021

Developing new ways to characterize graphene is essential to developing more rigorous quality standards. Researchers at the University of Adelaide in Australia explored using thermogravimetric analysis to evaluate graphene quality.

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Improving production of GaN-based LEDs: Metalens takes ‘exceptional clear’ images of patterned sapphire substrate

By Lisa McDonald / July 23, 2021

Gallium nitride-based blue LEDs are typically grown on patterned sapphire substrates that are imaged using SEM and optical microscope systems to ensure the substrate has the correct structure. Researchers in Taiwan developed a new gallium nitride-based metalens that improves the clarity of substrate images.

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A new frontier for 2D materials—researchers create high-entropy MXenes

By Lisa McDonald / July 6, 2021

Despite the extensive number of studies on high-entropy 3D crystalline solids, very little has been reported on high-entropy 2D materials. Researchers led by Indiana University–Purdue University Indianapolis demonstrated the opportunities for creating high-entropy 2D materials using MXenes.

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Improving safety of implants: A review on nanotechnology as an anti-infection strategy in periprosthetic joint infections

By Lisa McDonald / June 22, 2021

Periprosthetic joint infection is a serious complication that can occur in joint replacement surgery. Researchers in Italy and the United States review the research on using nanotechnology to prevent and treat PJI.

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