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

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

7.2.1.4 Instantaneous Stationary Source in Flooded Tube

For a source at the end of a long water-filled tube with non-absorbent walls, cross-sectional area A_tube, and length X_max = (0.484) Q_message / A_tube c_min, then t_rec = (0.117 / D) (Q_message / A_tube c_min)² and t_fadeout = e t_rec ,⁷⁰³ using c_min from Eqn. 7.5. Hence a simple message (I_message = 100 bits) passing through a tube of area A_tube = 1 micron² and length X_max = 50 microns requires Q_message = 130 message molecules and is received in t_rec ~ 60 sec ('I ~ 2 bits/sec).

Last updated on 18 February 2003