Long liquid bridges

The hydrostatics and hydrodynamics of liquid bridges held between parallel coaxial solid disks under reduced-gravity conditions are characterized, summarizing the results of space experiments and experimental and numerical simulations of microgravity. The results are presented in graphs and diagrams, and applications such as floating-zone crystal growth and electrophoresis separation techniques are considered. It is argued that the high cost, logistical problems, and infrequent availability of space facilities give earth-based R&D efforts in materials processing the advantage, although carefully prepared space experiments can act as a catalyst stimulating progress in earth-based activities.