Molecular dynamics and the modelers' art

Article Abstract:

Molecular dynamics is the means of measuring and recording molecular motions and interactions that exist in time spans of picoseconds over distances measured by angstroms. Molecular dynamics can also be used to predict chemical reactivity. The method involves using Newtonian equations to calculate molecular velocity and positions for each atom in a molecule within a given time frame. The molecular structure can be derived by modelling subsequent calculations with each advance in time. The method has been applied in research involving protein structures, electrostatic interaction and bond-breaking reactions of enzyme-substrate complexes.

Molecular dynamics

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Taming Maxwell's demon: random molecular motions can be put to good use

Article Abstract:

Perpetual-motion miniature machines can be constructed by taking advantage of random molecular motions. One such device was developed by the late Richard Feynman in which a ratcheted gear was connected to a microscopic propeller. Fluid molecules hit the propeller but only one direction of motion is allowed.

Methods, Usage, Nanotechnology, Brownian motion

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Dynamics of Kilauea volcano

Article Abstract:

The eruptions of Kilauea have continued from 1983 until 1992. Data collected aids in predictions of disasters in other parts of the world. Geologic research enables scientists to locate and map the areas within the earth's surface that influence earthquakes.

Natural disasters, Volcanoes, Hawaii, Kilauea

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