Mikrodiska

Mikrodiska refers to small disk-shaped structures used in various branches of science and technology. The term is most commonly applied in Swedish-language literature to describe microfabricated disks, but the concept appears widely in international research under terms such as microdisk, micr odisk resonator, or dielectric disk. These structures are typically on the micron scale in diameter and thickness and are produced from materials including silicon, silicon nitride, glass, or polymers.

In fabrication terms, mikrodiska are created with standard microfabrication techniques such as lithography, etching, and thin-film deposition, or through self-assembly processes in certain material systems. The precise geometry and material choice are driven by the intended application, with dimensions and surface quality tailored to performance requirements.

In photonics, mikrodiska act as dielectric resonators that confine light by total internal reflection around the edge of the disk. They support whispering-gallery modes and can serve as compact lasers, optical filters, and high-sensitivity sensors, often achieving high quality factors and enabling strong light–matter interactions in small footprints.

In microfluidics and biosensing contexts, mikrodiska can function as structural elements within channels or as functionalized surfaces that interact with fluids, particles, or biomolecules. They may be used to influence flow, facilitate mixing, or support particle tracking and separation experiments.

Overall, mikrodiska represent versatile, small-scale disks that enable a range of photonic, mechanical, and microfluidic applications in research and development. See also microdisk resonator, whispering-gallery mode, and microring resonator.