Methods for fabricating three-dimensional micro structures

摘要

A method for producing a three-dimensional object includes the steps of providing an interface plane within a chamber and generating a beam of radiant energy having varied levels of beam energy density. The beam is directed to selectively expose a pattern of address points on the interface plane to the beam of radiant energy for a limited duration. Conditions are established in the chamber to enable the beam to induce a micro-chemical reaction at the interface plane at a rate which serves to form a portion of the three-dimensional object. A significant feature of the invention is that the micro-chemical reaction is substantially binary with respect to the beam energy density. That is, the reaction is either substantially "on" or substantially "off.