Results 231 to 240 of about 33,386 (301)

Transmissive Terahertz Tunable and Multifunctional Polarization Manipulation With Ge/VO2 Hybrid Metasurface

open access: yesNanophotonics, Volume 15, Issue 12, 25 June 2026.
A hybrid metasurface composed of Ge dielectric pillars and a VO₂ grating is proposed, which enables functional switching between symmetric and asymmetric polarization conversion in transmission. By continuously tuning the conductivity of VO2, the structure achieves multiple dynamic controls of asymmetric transmission, circular dichroism, and ...
Xingxing Fan   +6 more
wiley   +1 more source

First Observation of the Second Harmonic of Upper Band Chorus Waves Linking to Slow Z‐Mode

open access: yesGeophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract The Z‐mode, comprising fast and slow branches, is a ubiquitous electromagnetic wave in planetary magnetospheres. While fast Z‐mode generation is attributed to electron cyclotron maser instability, the slow Z‐mode mechanism remains unresolved.
Si Liu   +6 more
wiley   +1 more source

Tunable Plasmon‐Enhanced Wide‐Angle Terahertz Perfect Absorption via Lorentz Media

open access: yesNanophotonics, Volume 15, Issue 11, 13 June 2026.
A planar graphene‐Lorentz‐DBR structure realizes wide‐angle terahertz perfect absorption through a composite phase‐amplitude matching mechanism. The Lorentz dielectric provides dispersive phase compensation and controlled loss, whereas graphene supports dissipative coupling, enabling high absorption up to 80° incidence and multichannel spectral ...
Yuxuan Zhou
wiley   +1 more source

Controlling narrowband phosphorescence and delayed fluorescence by aggregate size. [PDF]

open access: yesNat Commun
Cheng G   +12 more
europepmc   +1 more source

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