How to achieve high-level integration of composite micro-nano structures with different structural characteristics through a minimalist and universal process? In International Journal of Extreme Manufacturing, researchers from Zhejiang University, University of Shanghai for Science and Technology, and Aalborg University revealed a controllable ultrafast laser-induced focal volume light field and experimentally succeeded in highly efficient one-step composite structuring in multiple transparent solids based on focal volume optical printing.  Their work reports a highly universal all-optical fabrication of composite micro-nanostructures in various transparent solids with independent controllability in multiple degrees of freedom, expands the current cognition of ultrafast laser-based material modification in transparent solids, and establishes a new scientific aspect of strong-field optics, namely, focal volume optics for composite structuring transparent solids.

While compound extreme events across the bulk of the planet are characterized by hot and dry conditions, those over polar ice sheets are predominantly associated with hot and wet conditions, according to a new study by an international research team. Analyzing 42 years of global weather, the researchers found that extreme warm events, or heatwaves, and extreme precipitation events, such as heavy rainfall, overlapped far more in Antarctica than in lower latitudes. This co-occurrence may also accelerate polar ice sheet melting, the team said.