Open Access

Table 1

Summary of nano-scale-defining lengths [39].

Domain Formula Typical value nma
Surfaces Geometry 5
Nucleation Critical nucleus size (6) 5
Optics and electronics Bohr radius (7) 10
Magnetism Single domain size 50
Mechanics Griffith length (13) 50
Systems
Electronic Electron mean free path 100
Photonic Evanescent field penetration depth 100
Fluidic Debye length (30) 10
Mechanical Phonon mean free path 1000
a

At room temperature.

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