Crystal growth of organic superconductor TIF [Ni (mit) 2]2 was carried out on the Space Shuttle Discovery under a microgrogravity. We could obtain some crystals after the growth period of only about one week, in spite of the growth period for about three months on the earth. Difference of those physical properties between the crystals obtained under the microgravity and on the earth was compared.
Experiments for the preparation of a. planned Spacelab experiment in the Bubble, Drop and Particle Unit (BDPU) ha.ve been performed at the JAMIC drop shaft in November 1993. The aim of the experiment is the investigation of the evaporation and condensation kinetics a.t the vapor liquid interface of a single vapor bubble in a. homogeneous supersaturated liquid. Nine drops ha.ve been successfully performed a.t JAMIC. Bread board components of the Spacelab experiment were tested under microgravity conditions. A first evaluation of the data also showed interesting scientific results. Keywords: nudeation, bubble growth, interfacial phenomena., evaporation and condensation kinetics;
Space tether is expected as a useful space system for the coming space utilization era. In the field of microgravity applications, the tethered system has been proposed as a variable low-gravity platform. The space tether will be widely applied to the space science and technologies, such as a multi-subsatellite system for ionospheric sounding, a tether elevator, a space power generator, and a momentum transfer system. A space tether experiment was carried out on the Space Shuttle in 1992 as a US-Italy joint space program (TSS-1). They could not extend the tethered satellite up to 20 km as intended because of a failure in the deployment mechanism. However, it was an epoch-making experiment to open the tether application in space. This article describes potential applications of space tether including gravity control, associated technologies, and a research program on the space tether now under way at ISAS.