The invention is directed to making non-hollow, non-fragmented spherical metal or metal alloy particles. In at least one specific embodiment, the binder composition can include at least one unsaturated compound having two or more unsaturated carbon-carbon bonds and at least one free radical precursor. The flowable composition may be injected into tissue whereupon it coagulates to become the solid or gel, monolithic implant. Low power video rate operation can be achieved in a paper-like display. First opening 3a is sealed with resin.