phononische

Phononische is an adjective describing phenomena related to phonons, the quantum excitations of vibrational modes in a crystalline lattice. In English-language physics, the equivalent term is phononic. The term is used in solid-state physics, materials science, and thermodynamics to refer to properties or effects governed by lattice dynamics and quantized vibrational energy.

A phonon represents a quantum of lattice vibration. In a crystalline solid, collective vibrational modes become quantized, yielding acoustic and optical phonons. Phonons influence many material properties, including specific heat, thermal conductivity, and electron scattering. They participate in phenomena such as superconductivity through electron-phonon coupling and can be created or probed by light via Raman and infrared spectroscopy.

Phononics, closely related to the study of phonons, is a research field that seeks to control phonon transport and interactions for information processing and thermal management. It includes the design of phononic crystals and metamaterials that exhibit phonon band gaps, guiding or blocking vibrational energy. Practical aims include thermal diodes, phonon-based logic, and improved thermoelectric performance.

In practice, the German-language literature uses phononisch or phononische Eigenschaften to describe lattice-dynamical behavior. The term emphasizes the particle-wave duality of lattice vibrations and their quantum nature, and it is used across theoretical modeling, experimental spectroscopy, and device-oriented research.