A recent review has shed light on the transformative potential of acoustic technologies in the fields of biofabrication and tissue engineering.

Ventilation is an important process within the global ocean, where waters sink to deeper layers, are transported by deep currents, and eventually upwelled back to the surface. This process affects the distribution of oxygen and carbon in the global ocean by transporting these elements from the surface to deeper regions of the ocean. Scientists are still trying to understand the exact dynamics and circulation pathways that determine how dense, cold water from deep in the Gulf of Mexico gets circulated within the Gulf. Current theories suggest that deep water is transformed into intermediate water through small scale mixing which drives upwelling before flowing out of the Gulf through the Yucatán Channel.

This work reports the design of an efficient multiband UC system based on Ln³⁺/Yb³⁺-doped core-shell upconversion nanoparticles (Ln/Yb-UCNPs, Ln³⁺=Ho³⁺, Er³⁺, Tm³⁺). In the design, Ln³⁺ ions are incorporated into distinct layers of Ln/Yb-UCNPs to function as near-infrared (NIR) absorbers across different spectral ranges. This design achieves broad multiband absorption withtin the 1100 to 2200 nm range, with an aggregated bandwidth of approximately 500 nm. It can effectively extend the photovoltaic performance of silicon solar cells.

Kyoto, Japan -- Explosions in the sky and explosions on land are literally worlds apart. A supernova and a land mine explosion don't seem like they would have much in common. But at the fine level, their mechanisms are not so different: the so-called cell structure appears at the smallest scale, which provides the most important criterion in predicting the success or failure of terrestrial detonation in a land-mine explosion.

Terrestrial and astrophysical detonations are basically dictated by the same theories for their time-averaged characteristics. Terrestrial cell-based theories, however -- such as those that explain a land mine explosion -- have not yet been applied as criteria for astrophysical detonation.

Motivated by the potential of this theoretical analogy, an interdisciplinary research team of engineers and astrophysicists at Kyoto University recently joined together to better understand how type Ia supernovae explode.