A three-dimensional varifocal meta-device using cascaded metasurfaces with Moiré and Fresnel lens phase profiles enables dynamic manipulation of the focus point in three-dimensional space. The relative rotation between the metasurfaces precisely controls the focal point position. This work showcases the application of the proposed meta-device integrated into an AR display system. It addresses the VAC problem and demonstrates its capability for pupil steering to enlarge the eyebox.

The researchers from the Lab of Advanced Actuation Technologies (LAAT) at Harbin Institute of Technology propose performance enhancement strategies for TNAs to address the critical demand for high-performance actuators. These approaches enable the simultaneous realization of large deformation and high output force, significantly improving the actuation performance. The novel high-performance TNAs demonstrate strong application potential in soft robots.

Scientists say they have developed a new technology capable of extracting clean hydrogen fuel directly from seawater.

A research paper by scientists at Zhejiang University presented.

A research paper by scientists at Imperial College London presented CrystalTac, a vision-based tactile sensor family fabricated via rapid monolithic manufacturing.