In physics, the passage of a particle through a seemingly impassable energy barrier. Though a particle's energy may be too low to surmount a barrier in classical physics, the particle may still cross the barrier as a consequence of its quantum-mechanical wave properties. An important application of this phenomenon is in the operation of the scanning tunneling microscope.
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Evidence of phonon-assisted tunnelling in electrical conduction through DNA molecules.(Research article)(deoxyribonucleic acid)
Feb 19, 2008; Authors: Povilas Pipinys ; Antanas Kiveris (corresponding author)  Introduction Conductance properties of DNA have recently...