Some fun diagrams I've made. I use Ipe for schematics and matplotlib for plotting. All of these are public domain.

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  Filling of bands at equilibrium.
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  Work function difference between gold and aluminium.
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  Kelvin probe energy diagram.
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  Thermionic diode energy diagram, forward bias.
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  Thermionic diode energy diagram, reverse bias.
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  Photoelectric diode, forward bias.
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  m–s junction in Schottky–Mott model.
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  m–s junction in Bardeen picture.
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  Semiconductor surface definition of electron affinity.
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  Schottky barrier, equilibrium.
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  Schottky barrier, reverse bias.
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  Schottky barrier, forward bias.
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  Schottky barrier, minority carrier injection.
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  Band bending in semiconductor heterojunction.
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  Foldback I–V curves.
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  Foldback power dissipation.
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  Hamiltonian flow according to Liouville's equation.
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  Quantum mechanical ensemble, all states.
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  Quantum mechanical canonical ensemble.
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  Quantum mechanical microcanonical ensemble.
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  Classical mechanical ensemble, all states.
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  Classical mechanical canonical ensemble.
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  Classical mechanical microcanonical ensemble.
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  Thermocouple characteristics for low temperatures.
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  Thermocouple characteristics for intermediate temperatures.
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  Thermocouple characteristics for high temperatures.
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  Absolute seebeck coefficient of lead at low temperature.
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  Absolute seebeck coefficient of various materials.
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  Surface ionization effect in caesium.
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  Thermocouple circuit.
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  Lamb–Oseen vortex.
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  Ideal gas pressure (classical/Fermi gas/Bose gas).
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  Ideal gas entropy (classical/Fermi gas/Bose gas).
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  Ideal gas chemical potential (classical/Fermi gas/Bose gas).
• Quantum ensemble Wigner function evolution.
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  Quantum ensemble Wigner function steady state (equilibrated).
• Double rotation in 4-dimensions (a 5-cell).
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  Stream function.
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  Chemical potentials in solution.
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  Activity coefficients in solution.

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