Physical Review E

Researchers at the University of Osaka, Shimane University, and Kyoto Sangyo University have now theoretically identified an unusual pattern of vibrations that emerges just before a crystal made of regularly arranged grains yields. Many vibrational modes soften simultaneously along particular directions, while long-wavelength waves travel more slowly than shorter ones. The findings reveal a possible physical precursor to failure in highly ordered particulate materials.

Physicists at The University of Osaka have unveiled a breakthrough theoretical framework that uncovers the hidden physical rule behind one of the most powerful compression methods in laser fusion science — the stacked-shock implosion. While multi-shock ignition has recently proven its effectiveness in major laser facilities worldwide, this new study identifies the underlying law that governs such implosions, expressed in an elegant and compact analytic form.

Researchers find solution to ‘static friction paradox’ — apparent stick state with slow slip is purely mechanical

A joint research led by City University of Hong Kong (CityU) has built a mathematical model to explore and analyse the relationship between disease transmission, people’s awareness about the disease and their resulting behaviours, as well as disease information spread by the mass media and opinion leaders. The research may shed some insights on responding to COVID-19 and other similar infectious diseases.