Abstract: The invention discloses a method and system to digitally compensate for reactivity inhomogeneities of a photoresponsive material within a build volume of an additive manufacturing system, which offers significant advantages for the production of high-fidelity and high-accuracy three-dimensional objects. The method comprises a) Providing a digital model of said three-dimensional object, b) defining a sequence of patterns of light (31) from said digital model, and c) irradiating with each of said patterns of light (31) according to the defined sequence a photoresponsive material (32) that is capable of alteration of its material phase upon irradiation by light, thereby creating a three-dimensional distribution of alterations within the photoresponsive material (32) which physically reproduces said three-dimensional object, thereby creating the three-dimensional object.

Abstract: A method and system for fabricating a structure (32) having at least one dimension and made of highly aligned structural micro-filaments (11), the method comprising: a) providing a photoresponsive material (13), said photoresponsive material (13) being capable of altering its material phase upon illumination by light (15) of one or more wavelengths, in an extrusion unit (12), preferably a nozzle, or in an optically transparent vessel; b) irradiating said photoresponsive material (13), preferably concurrently with its extrusion through said extrusion unit (12), with one or more light sources (14, 21, 50, 62, 65) capable of emitting light of one or more wavelengths, at least one of said one or more light sources (14) having the capability to generate an optical modulation instability in said photoresponsive material (13), thereby creating an optical modulation instability in said photoresponsive material (13), thereby forming a micro-patterned filament (10); c) forming from said formed micro-patterned filament,