Etching-assisted fabrication of photonic microparticles with tunable dual and quadruple stopbands from mono-sized and binary silica colloidal particles

Key Points

• Tunable stopbands in photonic microparticles enhance light control and manipulation, facilitating advanced optical applications.
• Key evidence indicates successful creation of dual and quadruple stopbands using etching methods on silica particles.
• Analysis of binary silica colloidal particles demonstrated effective fabrication strategies for achieving desired optical properties.
• This work may enable innovative designs in photonics, but further research on scalability is needed for practical applications.