| abstract |
A substrate ( 1 ) for spatially selective micron and nanometer scale deposition and/or reaction, which has a support ( 3 ), a conductive layer ( 5 ) on the support, a dielectric layer ( 7 ) to hold an electrostatic charge pattern such as a photoconductive layer of a material which dissipates an electric charge upon receiving incident radiation thereon, and a chemically functional layer ( 9 ), such that electrostatic charge patterns may be formed in a predetermined manner upon the substrate to influence the movement of charged droplets in an emulsion ( 15 ) on the substrate. The chemically functional layer either provides a surface for chemical functionalisation of the substrate or prevents access or reaction to the dielectric or photoconductive layer. |