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Hybrid ribbons a gift for powerful batteries

Researchers at Rice University have developed a new material that accelerates the development of high-power lithium-ion batteries suitable for electric cars. The hybrid ribbons of vanadium oxide and graphene work well for lithium-ion storage, providing both high energy density and significant power density.

SourceRice University·JournalNano Letters·DateMar 25, 2013

Flexing fingers for micro-robotics: Berkeley Lab scientists create a powerful, microscale actuator

Researchers developed an elegant and powerful new microscale actuator based on vanadium dioxide material, which expands and contracts in response to temperature variations. The actuators are smaller than human hair width and offer large force and displacement, suitable for biological and microfluidic applications.

New device hides, on cue, from infrared cameras

Researchers at Harvard University have developed a new device that can absorb 99.75% of infrared light on demand, using a tunable material with exceptional optical properties. The device has wide-ranging applications in thermal imaging, spectroscopy, and energy harvesting.

SourceHarvard University·JournalApplied Physics Letters·DateNov 26, 2012

Paints and coatings containing bactericidal agent nanoparticles combat marine fouling

Scientists at Johannes Gutenberg University Mainz discovered that vanadium pentoxide nanoparticles can inhibit the growth of barnacles, bacteria, and algae on surfaces in contact with water. This could lead to the development of new protective coatings that are less damaging to the environment than current ship coatings.

SourceJohannes Gutenberg Universitaet Mainz·JournalNature Nanotechnology·DateJul 2, 2012

Ultrafast sonograms shed new light on rapid phase transitions

Researchers have developed an ultrafast method to track structural changes in solid materials during phase transitions. This technique sheds new light on vanadium dioxide's fast transformation between transparent and reflective phases. The study provides valuable insights into designing high-speed optical switches using this material.

SourceVanderbilt University·JournalNature Communications·DateMar 8, 2012

Upgrading the vanadium redox battery

Researchers have improved the performance of vanadium redox batteries by modifying their electrolyte solution, increasing energy storage capacity by 70 percent. The upgraded battery can now operate in a wider temperature range and reduce cooling costs, making it more suitable for grid reliability and renewable power sources.

SourceDOE/Pacific Northwest National Laboratory·JournalAdvanced Energy Materials·DateMar 17, 2011

Quantum mechanics predicts unusual lattice dynamics of vanadium metal under high pressure

Researchers have discovered a new type of phase transition in vanadium metal under extreme pressure, which contradicts the behavior of most other elements. This unusual lattice dynamics is driven by a huge change in electronic structure, providing a new explanation for the record-high superconducting temperature.

SourceUppsala University·JournalProceedings of the National Academy of Sciences·DateOct 11, 2007

Timing nature's fastest optical shutter

Researchers at Vanderbilt University developed an ultra-fast optical shutter with a record-breaking speed of 40 picoseconds, enabling high-speed imaging applications. The new technology uses femtosecond laser pulses to freeze light at the molecular level, opening doors for breakthroughs in fields like biology and materials science.

SourceVanderbilt University·JournalOptics Letters·DateApr 6, 2005