© 1999 Robert A. Freitas Jr. All Rights Reserved.

Robert A. Freitas Jr., Nanomedicine, Volume I: Basic Capabilities, Landes Bioscience, Georgetown, TX, 1999

6.2.1 Gravitational Energy Storage

Not surprisingly, the gravitational field offers one of the weakest forms of energy storage available to nanodevices. The energy density attainable using a storage device of density r and size L (height) in a gravity field g is

{Eqn. 6.1}

For r = 2000 kg/m³, g = 9.81 m/sec² and L = 1 micron, E_storage = 2 x 10^-2 joules/m³.

Last updated on 8 November 2006