News
A question of resonance
25 Jun 2025
A team led by LMU physicist Andreas Tittl presents a novel method that could make manufacturing processes for semiconductor components easier and cheaper.
Resonances are usually associated with finite systems – the vibrations of clamped strings in a guitar, for example, or the optical modes in a cavity defined by mirrors. In optics, resonances may be induced in infinite continuous media via periodic modulations of their optical properties. In a study published in the journal Light: Science & Applications, a team led by LMU nanophysicist Andreas Tittl has demonstrated that periodic modulations of the permittivity in a featureless thin film can also act as a symmetry-breaking mechanism, allowing the excitation of photonic quasi-bound states in the continuum (qBICs).