Defect-Symmetry Engineered Gyroidal Photonic Crystals Achieve Monotonic Modulation of Bandgap Width With a Stable Mid-Gap.

ABSTRACT: Three-dimensional (3D) photonic crystals with a photonic bandgap (PBG) facilitate strong control of light propagation. In many applications, PBG width needs to be systematically manipulated while the system needs to be operated at predetermined wavelengths. Conventional methods for such situations require the coordinated modulation of multiple factors, which complicates practical implementation. Achieving monotonic tuning of the PBG width while maintaining a stable central frequency through single-parameter modulation remains challenging. Here, inspired by the twin grain boundary discovered in natural gyroidal networks, we construct a series of gyroid-derived tubular networks incorporating twin mirror symmetry as a periodic design element with different gap distances between the twin mirro

SUBMITTER: Huang S 

PROVIDER: S-EPMC13624417 | biostudies-literature | 2026 Sep

REPOSITORIES: biostudies-literature