Contents

18 August 2000
Vol 289, Issue 5482

About The Cover

Cover image expansion

COVER Atomistic simulations of liquid nanojets extend hydrodynamics to the nanoscale. The image shows the leading part of a 6-nm-wide, 200-nm-long propane jet propagating in vacuum at 200 m/s (individual molecules, small blue spheres). Molecular evaporation and thermal stress fluctuations that accelerate neck-shaped instabilities lead to droplet formation. Such nanojets may find use in patterning, printing, and biotechnology. See page 1165. [Image: U. Landman, M. Moseler, M. D. Wolf]