Brown dwarfs are known as "failed stars," owing to the lack of central hydrogen burning. They bridge the gap between planets and stars. Some brown dwarfs are found to maintain kilogauss magnetic fields and produce flaring ...
More than 50 years after the discovery of the first pulsar, the detailed physics of the emission process in a pulsar magnetosphere still remains unclear.
In conventional holography, the hologram is formed by recording the interference fringes of two coherent beams using a photosensitive material. The amplitude and phase information of the original signal wave can be reconstructed ...
A research team reported the direct measurement of dielectric tensors of anisotropic structures including the spatial variations of principal refractive indices and directors. The group also demonstrated quantitative tomographic ...
In a paper published in Science China Chemistry, scientists present an orthogonal carbazole-perylene bisimide pentad, which is a photoconversion-tunable photosensitizer with diversified excitation and excited-state relaxation ...
Cylindrical vector beam (CVB) multiplexing has emerged as a powerful technique to boost signal channels. Coupling and separating CVBs are two pivotal elements in CVB multiplexing communication. Although off-axis control technologies ...
There has been an interesting debate on the quantum versus classical origin of ghost imaging in thermal light. To clarify this quantum-classical dilemma, Lixiang Chen at Xiamen University of China formulated a density matrix ...
For two weeks in June 2020, a massive dust plume from Saharan Africa crept westward across the Atlantic, blanketing the Caribbean and Gulf Coast states in the U.S. The dust storm was so strong, it earned the nickname "Godzilla."
The lowest level of the atmosphere, the troposphere, contains almost all of Earth's weather. In the stratosphere above, moisture drops to almost zero. The boundary that separates these two layers—the tropopause—is defined ...
Simultaneous SAM and OAM identification is a significant but challenging topic. Chinese scientists have demonstrated that a single spin-decoupled azimuth-quadratic phase metasurface could perform photonic momentum transformation, ...
