Chemistry & Physics
Updates every hour. Last Updated: 7-Oct-2025 20:11 ET (8-Oct-2025 00:11 GMT/UTC)
USTC develops self-locking broadband Raman-electro-optic microcomb
University of Science and Technology of ChinaA team led by Prof. DONG Chunhua from the University of Science and Technology of China (USTC), in collaboration with Prof. BO Fang's group from Nankai University, has successfully developed a self-locked Raman-electro-optic (REO) microcomb on a single lithium niobate chip. By synergistically harnessing the electro-optic (EO), Kerr, and Raman effects within one microresonator, the microcomb has a spectral width exceeding 300 nm and a repetition rate of 26.03 GHz, without the need for external electronic feedback. The research was published in the Nature Communications.
- Journal
- Nature Communications
Missing harmonic dynamics in Generalized Snell’s Law: revealing full-channel characteristics of gradient metasurfaces
Light Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CASPeer-Reviewed Publication
This work integrates phase gradient control with Floquet periodicity, systematically revealing the "missing" harmonic dynamics in the Generalized Snell’s Law (GSL). Through deterministic Floquet-engineered momentum compensation, target harmonics are selectively activated, transforming spatial harmonic components into independently tunable degrees of freedom—culminating in the Spatial Harmonic-expanded Generalized Snell’s Law (SH-GSL). This paradigm shifts traditional gradient metasurface research from "avoiding inter-unit coupling" to "precisely regulating strong inter-unit coupling". The work systematically elucidates the dynamics of high-order spatial harmonics in gradient metasurfaces, shaping the core physics of "full-channel metasurfaces," and provides theoretical and engineering pathways for ultra-dense beamforming, reconfigurable multichannel sensing, and generalized metasurface device design under strong coupling paradigms.
- Journal
- Light Science & Applications
- Funder
- National Natural Science Foundation of China, National Science Key Lab Fund, National Key Research and Development Program of China, Beijing Science Foundation for Distinguished Young Scholars
Turning pineapple waste into soil-saving nanofibers for desert agriculture
Journal of Bioresources and Bioproducts- Journal
- Journal of Bioresources and Bioproducts
Metalloligand enabling cobalt-catalyzed anti-markovnikov hydrosilylation of alkynes with tertiary silanes
Chinese Chemical SocietyPeer-Reviewed Publication
- Journal
- CCS Chemistry
SwRI managed the IMAP payload set to launch this month to map the boundary of the heliosphere
Southwest Research InstituteBusiness Announcement
SAN ANTONIO — September 22, 2025 — Southwest Research Institute (SwRI) is managing the payload of instruments aboard NASA’s Interstellar Mapping and Acceleration Probe (IMAP) spacecraft scheduled to launch Wednesday, September 24, 2025 at 7:30 a.m. EST from Kennedy Space Center in Florida. The payload, including the SwRI-developed Compact Dual Ion Composition Experiment (CoDICE) instrument, will study the interaction between the solar wind and the interstellar medium that surrounds it.
Over 62,700 deaths associated with record-breaking heat during the summer of 2024 in Europe
Barcelona Institute for Global Health (ISGlobal)Peer-Reviewed Publication
- Journal
- Nature Medicine