Quantum Tunneling occurs with barriers of thickness around 1–3 nm and smaller

Quantum Tunneling:

Quantum mechanical phenomenon where wave-function can propagate through the potential barrier. Transmission through the barrier can be finite and depends exponentially on barrier height and barrier width. Tunneling occurs with barriers of thickness around 1–3 nm and smaller.

Quantum tunneling is projected to create physical limits to the size of the transistors used in microelectronics. The effect was predicted in the early 20th century. It was accepted as a general physical phenomenon came mid-century.

Source:

[1] Wikipedia Contributors. “Quantum Tunnelling.” Wikipedia, Wikimedia Foundation, 5 Jan. 2021, en.wikipedia.org/wiki/Quantum_tunnelling. Accessed 7 Jan. 2021.

[2] geralt. “Quantum Mechanics Physics Atoms – Free Image on Pixabay.” Pixabay.com, 19 July 2016, pixabay.com/illustrations/quantum-mechanics-physics-atoms-1525470/. Accessed 7 Jan. 2021.

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