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ScienceDaily: Matter & Energy News |
| Zinc’s oxidation state can be made +3, fundamentally changing the element’s chemistry Posted: 16 Aug 2021 11:39 AM PDT Zinc traditionally has a valence of two, meaning two electrons take part in the element's chemical reaction. A new article shows that the chemistry of zinc can be fundamentally changed, making it trivalent -- or a valence of three -- with the proper reagent. |
| Heavily enriched: An energy-efficient way of enriching hydrogen isotopes in silicon Posted: 16 Aug 2021 09:57 AM PDT Deuterium, a heavier but less abundant version of the hydrogen atom, has many practical applications. Unfortunately, producing deuterium and using it to protect silicon-based semiconductors requires a lot of energy and very expensive deuterium gas. Now, scientists have discovered an energy-efficient exchange reaction to swap hydrogen atoms for deuterium on the surface of nanocrystalline silicon. Their results pave the way to more durable electronic devices while keeping costs and the environmental impact low. |
| Table-top electron camera catches ultrafast dynamics of matter Posted: 16 Aug 2021 09:57 AM PDT Scientists have built a compact electron camera that can capture the inner, ultrafast dynamics of matter. The system shoots short bunches of electrons at a sample to take snapshots of its current inner structure and is the first such electron diffractometer that uses Terahertz radiation for pulse compression. The developers validated their Terahertz-enhanced ultrafast electron diffractometer with the investigation of a silicon sample. |
| Inflatable robotic hand gives amputees real-time tactile control Posted: 16 Aug 2021 09:57 AM PDT An MIT-developed inflatable robotic hand gives amputees real-time tactile control. The smart hand is soft and elastic, weighs about half a pound, and costs a fraction of comparable prosthetics. |
| Polymers 'click' together using green chemistry Posted: 16 Aug 2021 08:20 AM PDT A multi-institutional team of chemists harnessed the power of a dangerous gas called SOF4 to create new modifiable polymers useful for drug discovery and material science. The team used a type of rapid and reliable chemistry known as click chemistry to 'click' these molecules together without producing toxic byproducts. |
| Robotic floats provide new look at ocean health and global carbon cycle Posted: 16 Aug 2021 08:20 AM PDT Researchers demonstrated how a fleet of robotic floats can revolutionize our understanding of ocean primary productivity. |
| Woven nanotube fibers turn heat energy into electrical energy Posted: 16 Aug 2021 06:15 AM PDT Carbon nanotubes woven into thread-like fibers and sewn into fabrics become a thermoelectric generator that can turn heat from the sun or other sources into other forms of energy. |
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