A study conducted by researchers from the Changchun Institute of Optics, Fine Mechanics and Physics (CIOMP) of the Chinese Academy of Sciences has demonstrated how nitrogen vacancies (VN) resolve asymmetric carrier injection in GaN-based light-emitting diodes (LEDs), providing a practical way to improve device efficiency.
Researchers have developed a technique to fold glass sheets into microscopic 3D photonic structures directly on a chip—a process they call photonic origami. The method could enable tiny, yet complex optical devices for data processing, sensing and experimental physics.
“Existing 3D printers produce rough 3D structures that aren’t optically uniform and thus can’t be used for high-performance optics,” said research team leader Tal Carmon from Tel Aviv University in Israel.
“Mimicking the way a pinecone’s scales bend outward to release seeds, our laser-induced technique triggers precise bending in ultra-thin glass sheets and can be used to create highly transparent, ultra-smooth 3D microphotonic devices for a variety of applications.”
Last year, spectators along China’s Qiantang River witnessed an unusual sight: waves arranging themselves into a grid-like formation.
This striking pattern, named the “matrix tide,” arose from the river’s famous tidal bores that rush upstream against the flow. In this case, two undular bores — shockwave-like surges that spread outward like ripples on water — traveled in different directions and collided, creating the effect.
Chinese researchers have made significant progress in developing flexible invasive brain-computer interface implants, creating a stiffness-tunable “Neurotentacle” probe that can reduce implantation damage by 74 percent, Science and Technology Daily reported Tuesday.
The “Neurotentacle” probe developed by researchers at the Institute of Semiconductors, Chinese Academy of Sciences (CAS), contains a tiny hydraulic system. During the implantation, the hydraulically actuated “Neurotentacle” probe stiffens like an inflated balloon to precisely penetrate brain tissue. Once it is in place, it softens afterward to minimize damage and returns to a flexible state to adapt to the brain’s microenvironment, said the report.
The findings were published online in the international journal Advanced Science on July 21.
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