出典:Wiktionary
出典:Wikipedia
出典:『Wikipedia』 (2011/05/24 17:37 UTC 版)
Originally the term Janus particle was coined by C. Casagrande et al. in 1988 to describe spherical glass particles with one of the hemispheres hydrophilic and the other hydrophobic. In that work the amphiphilic beads were synthesized by protecting one hemisphere with varnish and chemically treating the other hemisphere with a silane reagent. This method resulted in a particle with equal hydrophilic and hydrophobic areas. Since then, and as anticipated by Pierre-Gilles de Gennes on the occasion of his Nobel lecture, the surface properties of these Janus particles have become an area of great interest for a variety of applications, such as drug delivery, catalysis, sensors, stabilization of water-oil emulsions and gas-liquid foams.