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Drude particles are model oscillators used to simulate the effects of electronic polarizability in the context of a classical molecular mechanics force field. They are inspired by the Drude model of mobile electrons and are used in the computational study of proteins , nucleic acids , and other biomolecules .
The model is named after the Dutch physicist Hendrik Antoon Lorentz. It is a classical, phenomenological model for materials with characteristic resonance frequencies (or other characteristic energy scales) for optical absorption, e.g. ionic and molecular vibrations, interband transitions (semiconductors), phonons, and collective excitations ...
The Drude model of electrical conduction was proposed in 1900 [1] [2] by Paul Drude to explain the transport properties of electrons in materials (especially metals). Basically, Ohm's law was well established and stated that the current J and voltage V driving the current are related to the resistance R of the material.
As far as I know, The Drude-Lorentz model is called that because it is based on the Lorentz dipole oscillator model for electrons first published by Lorentz in 1878, with ω 0 = 0 due to the lack of interaction between the nuclei and conduction electrons.
The Tauc–Lorentz model is a mathematical formula for the frequency dependence of the complex-valued relative permittivity, sometimes referred to as the dielectric function. The model has been used to fit the complex refractive index of amorphous semiconductor materials at frequencies greater than their optical band gap .
Assuming charge density oscillations () = the continuity equation: = = the Gauss law = and the conductivity = () taking the divergence on both sides and substituting the above relations: = () which is always true only if + = But this is also the dielectric constant (see Drude Model) = + and the condition of transparency (i.e. from a certain ...
In solid-state physics, the free electron model is a quantum mechanical model for the behaviour of charge carriers in a metallic solid. It was developed in 1927, [1] principally by Arnold Sommerfeld, who combined the classical Drude model with quantum mechanical Fermi–Dirac statistics and hence it is also known as the Drude–Sommerfeld model.
High Planes Models (Australia/Singapore) - Australian Company moved to Singapore after sale. Aircraft kits and accessories. JAYS Model Kits [9] (New Zealand) Aircraft Kits mostly formerly Ventura. Kiwi Wings [9] (New Zealand) - Aircraft Kits part of JAYS Model Kits; Kora Models (Czech Republic) Legato [5] (Czech Republic) - brand of AZ Model ...