quantum tunnelling
Impossible barrier crossing
Quantum tunnelling is a phenomenon in physics where a particle passes through a barrier it shouldn't have enough energy to cross, according to classical mechanics.
The particle doesn't go over or around—it passes through, as if tunnelling.
This occurs because particles behave as probability waves rather than solid objects.
Quantum tunnelling explains radioactive decay and enables technologies like scanning tunnelling microscopes.
The electrons quantum tunnel through the insulating layer.
Negative subatomic particle
- protonPositive nuclear particle
- alpha particleIonizing emission from decay
- photonElectromagnetic radiation unit
- neutronUncharged nuclear particle
subatomic · virtual particles · emission · absorption · radioactive decay · particle physics · fermion · boson
Quantum state's mathematical representation
- exponential decayProportional decrease over time
Governs quantum state evolution
- superpositionCoexisting in multiple states
- energy levelsGradations of physical vitality
- ground stateLowest possible energy configuration
- excited stateElevated energy configuration
Erasable non-volatile semiconductor storage
- electron microscopyImaging via focused particle beams
- alpha decayEmission of helium nuclei
- nuclear fusionAtoms joining, releasing power
Atomic-scale manipulation science
- nanowiresAtom-scale conductive strands
- nanofabricationCreating nanometer-scale structures
- nanoelectronicsCircuitry at billionth-meter dimensions
- grapheneMonolayer carbon hexagonal lattice
electron
Negative subatomic particle
- protonPositive nuclear particle
- alpha particleIonizing emission from decay
- photonElectromagnetic radiation unit
neutron · subatomic · virtual particles · emission · absorption · radioactive decay · particle physics · fermion · boson · muon
wavefunction
Quantum state's mathematical representation
- exponential decayProportional decrease over time
Schrödinger equation
Governs quantum state evolution
- superpositionCoexisting in multiple states
- energy levelsGradations of physical vitality
- ground stateLowest possible energy configuration
flash memory
Erasable non-volatile semiconductor storage
- electron microscopyImaging via focused particle beams
- alpha decayEmission of helium nuclei
- nuclear fusionAtoms joining, releasing power
nanotechnology
Atomic-scale manipulation science
- nanowiresAtom-scale conductive strands
- nanofabricationCreating nanometer-scale structures
- nanoelectronicsCircuitry at billionth-meter dimensions
quantum tunnellingclassical mechanics
Laws governing macroscopic motion
quantum tunnellingquantum confinement
Size-limited particle behavior
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