The creation of new advanced functional materials is anticipated by as
sembling micrometersized particles which have various functions. In th
is work, a new concept for assembling powder particles is proposed and
preliminary research results of the assembling process are reported.
The process for assembling is as follows: (1) electrified patterns are
formed on an insulating substrate using an electron beam drawing and
are observed with an SEM by the voltage contrast method, (2) the subst
rates are dipped into a solvent in which particles are dispersed, and
(3) the particles are adhered to the electrified patterns under suitab
le conditions. The number of adhered particles depends on the concentr
ation of particles in a solvent, the electron dose of electrification
and the dipping time of the substrate into the solvent. Using adequate
values of these parameters, spherical silica particles of 5 mu m diam
eter were arranged on calcium titanate substrates.