angströmes

Angströmes are a speculative concept in nanoscale physics describing localized charge transport phenomena on the scale of one ångström (10^-10 m). The term uses angström as a unit and applies a plural-style ending to emphasize atomic-scale character.

In theoretical discussions, an angström is a transient excitation or current pulse confined to roughly a one-angstrom region. It serves as a model for transport in atomic-scale channels where quantum confinement and lattice structure dominate.

Proposed properties include very short lifetimes, high sensitivity to defects and phonons, and potential signatures of quantized conductance different from bulk transport. Descriptions often employ tight-binding, ab initio, or time-dependent methods as localized density waves or packets.

Measurement is challenging; evidence is usually indirect. Probes include scanning tunneling spectroscopy, ultrafast electron microscopy, or conductance measurements in atomic-scale junctions, guided by simulations that relate observed signals to angström-scale excitations.

As a concept, angströmes provide a framework for discussing transport at atomic dimensions. They are not widely established in mainstream theory, and predictions vary across models, limiting definitive experimental validation.