Category Chemistry/Nanotechnology

Scientists create a ‘brilliantly luminous’ nanoscale chemical tool

Scientists create a 'brilliantly luminous' nanoscale chemical tool
Associate Professor Gary Baker, Piyuni Ishtaweera, Ph.D., and their team at the University of Missouri have created these tiny, clay-based materials, called fluorescent polyionic nanoclays. Credit: Angira Roy / University of Missouri

University of Missouri researchers developed the tiny clay-based materials that can be customized for a range of analytical, commercial and medical applications.

Imagine tiny LEGO pieces that automatically snap together to form a strong, flat sheet. Then, scientists add special chemical “hooks” to these sheets to attach glowing molecules called fluorophores.

Associate Professor Gary Baker, Piyuni Ishtaweera, Ph.D., and their team have created these tiny, clay-based materials—called fluorescent polyionic nanoclays...

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A safe nuclear battery that could last a lifetime

A safe nuclear battery that could last a lifetime
A small dye-sensitized betavoltaic cell has radiocarbon on both the cathode and anode, which increases its energy-conversion efficiency. Credit: Su-Il In

Sometimes cell phones die sooner than expected or electric vehicles don’t have enough charge to reach their destination. The rechargeable lithium-ion (Li-ion) batteries in these and other devices typically last hours or days between charging. However, with repeated use, batteries degrade and need to be recharged more frequently.

Now, researchers are considering radiocarbon as a source for safe, small and affordable nuclear batteries that could last decades or longer without charging.

Su-il In, a professor at Daegu Gyeongbuk Institute of Science & Technology, presents his results at the spring meeting of the American Chemical Soc...

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Green recipe: Engineered yeast boosts D-lactic acid production

Green efficient D-lactic acid production with the methanol-utilizing Komagataella phaffii yeast
Optimizing K. phaffii with an appropriate combination of enzyme genes and promoters enhances conversion of methanol to D-lactic acid
Credit: Osaka Metropolitan University

Constructed strain achieves record-high yield from methanol, advancing ecofriendly biomanufacturing. Researchers from Osaka Metropolitan University have discovered the ideal genetic “recipe” to turn yeast into a tiny yet powerful eco-friendly factory that converts methanol into D-lactic acid, a key compound used in biodegradable plastics and pharmaceuticals.

This approach could help reduce reliance on petroleum-based processes and contribute to more sustainable chemical production.

Lactic acid is widely used in food...

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Nature-inspired 3D-printing method shoots up faster than bamboo

A simple, energy-efficient 3D-printing process takes its cues from trees to manufacture polymers quickly and inexpensively. Charging forward at top speed, a garden snail slimes up 1 millimeter of pavement per second. By this logic, Beckman Institute for Advanced Science and Technology researchers’ new 3D printing process speeds past existing methods — at a snail’s pace.

Researchers in Beckman’s Autonomous Materials Systems Group created “growth printing,” which mimics tree trunks’ outward expansion to print polymer parts quickly and efficiently without the molds and expensive equipment typically associated with 3D printing. Their work appears in the journal Advanced Materials.

“Humans are incredibly talented at making things...

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