Sub-picosecond magnetization reversal in rare-earth-free spin valves

Mar 10, 2023 (Nanowerk News) Researchers at the Université de Lorraine in France and Tohoku University in Japan have demonstrated a sub-picosecond magnetization reversal in rare-earth-free archetypical spin valves. Their discovery was published in the journal Nature Materials ("Optically-induced ultrafast magnetization switching in ferromagnetic spin valves"). Manipulating magnetic materials without...

Swarm molecular robotics delivers cargo

Mar 10, 2023 (Nanowerk News) Swarm robotics is a new discipline, inspired by the cooperative behaviour of living organisms. It involves fabricating robots and getting them to swarm together to accomplish complex tasks. Macro-scale swarm robots have been developed and employed for a variety of applications, such as transporting and...

Pour water and shake for electricity

Mar 10, 2023 (Nanowerk News) A new stick-like, water-based device can convert energy from movement into electricity. The technology, which was reported in the journal Science and Technology of Advanced Materials ("Lightweight mobile stick-type water-based triboelectric nanogenerator with amplified current for portable safety devices"), could be used to power portable...

Machine learning searches for sustainable materials

Mar 10, 2023 (Nanowerk News) Researchers from Konica Minolta and the Nara Institute of Science and Technology in Japan have developed a machine learning method to identify sustainable alternatives for composite materials. Their findings were published in the journal Science and Technology of Advanced Materials: Methods ("A data-driven scheme to...

Bacteria power

Mar 10, 2023 (Nanowerk News) The natural activities of bacteria in soil mixed with chicken manure have been harnessed to generate electricity in a microbial fuel cell by researchers at Universiti Malaysia Sarawak (UNIMAS). Their work is published in the Pertanika Journal of Science & Technology ("Fabrication of Single Chamber...

Lighting up organic solar cell research

Mar 10, 2023 (Nanowerk News) Researchers at City University of Hong Kong (CityU) have found a way to significantly enhance the efficiency of carbon-based (organic) photovoltaic cells, commonly known as solar cells. The advance, reported in the journal Nature Energy ("Suppressed recombination loss in organic photovoltaics adopting a planar–mixed heterojunction...

The topology of rotating molecules

Mar 10, 2023 (Nanowerk News) The peculiar topological properties of some forms of matter have been researched for decades. Now, researchers at the Institute of Science and Technology Austria (ISTA) have discovered topological properties of simple diatomic molecules driven to rotation by laser pulses. The scientists apply similar mathematics to...

Nanogenerators aid wound healing

Mar 10, 2023 (Nanowerk News) Tiny dressings that generate electricity in response to movement could accelerate wound healing and tissue regeneration. Scientists in Taiwan reviewed the latest advances and potential applications of wound healing technology in the journal Science and Technology of Advanced Materials ("Self-assisted wound healing using piezoelectric and...