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SPB stars;high-precision asteroseismology;asteroseismology;slowly pulsating B;SPB

Inner Structure and Evolutionary Status of SPB Star HD 50230 Precisely Determined[Aug 20, 2019]

Scientists from Yunnan Observatories of the Chinese Academy of Sciences reported the results about Slowly Pulsating B (SPB) stars. They precisely determined inner structure and evolutionary status of SPB Star HD 50230 through high-precision asteroseismology analysis.

semiconductor;semimetal;optical feature

Scientists Reveal Transition Process of PtSe2 from Semiconductor to Semimetal and Its Optical Features[Aug 19, 2019]

A study led by Prof. WANG Jun from the Shanghai Institute of Optics and Fine Mechanics investigated the superior nonlinear optical performance, ultrafast dynamics of layered PtSe2 and revealed its evolution signature from semiconductor to semimetal.

femtosecond laser;window;shielding window;electromagnetic interference;laser;ultrasonic heating

Femtosecond Laser Helps Achieve Outstanding Shielding Window with Higher Effectiveness[Aug 21, 2019]

The electromagnetic interference (EMI) shielding window is of great significance for precision aeronautic, medical, civilian, and research facilities. Recently, the research team led by Shanghai Institute of Optics and Fine Mechanics has demonstrated a high-performance EMI shielding window with double-layer metal mesh etched by femtosecond laser.


Scientists Develop A Passive-cooled, Innoslab-based Nd:glass Regenerative Amplifier[Aug 13, 2019]

Recently, researchers from Shanghai Institute of Optics and Fine Mechanics (SIOM) have developed a Innoslab-based Nd:glass regenerative amplifier without active cooling. A 27 mJ, 5 ns near diffraction limited laser output at 1 Hz was achieved.

similar oscillation;hemisphere;solar cycle

Does the Sun Exhibit Similar Oscillation Behavior on Both Hemispheres?[Aug 13, 2019]

Solar magnetic activities have a complex dependence on time-scales ranging from several seconds to thousands of years and potentially up to millions of years. In a recent study, researchers led by Dr. DENG Linhua from Yunnan Observatories knew more about the quasi-biennial oscillation(QBO) behavior of solar magnetic activity in the northern and southern hemispheres.

active-region filament;material supply;NVST

Researchers Observe How Solar Filaments "fed"[Aug 13, 2019]

Based mainly on the high-resolution data obtained by the one meter New Vacuum Solar Telescope at the Fuxian Solar Observatory of Yunnan Observatories, Dr. WANG Jincheng's group from Yunnan Observatories investigated the formation process of an active-region filament.


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