Method and system for fabricating dual curvature micro-truss structures

A method for fabricating a micro-truss object, the method comprising:

• assembling:
• a reservoir;
• a volume of a photomonomer resin;
• a mold having an interior volume, the mold comprising a first portion, a second portion, a resin in port, and a resin out port, the first portion surrounding a minor part of the interior volume of the mold and comprising an index-matched mold material that is index of refraction matched with the photomonomer resin and a sealing surface, the second portion comprising a sealing surface;
• the sealing surface of the first portion being configured to form a seal with the sealing surface of the second portion and bisecting both the resin in port and the resin out pot;
• a volume of an index-matched fluid that is index of refraction matched with the index-matched mold material;
• a photomask;
• the mold enclosing the volume of the photomonomer resin;
• and
• the volume of the index-matched fluid being inside the reservoir;
• the mold being at partially submerged in the index-matched fluid;
• and
• projecting a first beam of collimated light along a first direction through the photomask and into the interior volume of the mold.

A method for fabricating a micro-truss object, the method comprising:

• assembling:
• a reservoir;
• a volume of a photomonomer resin;
• a mold having an interior volume, the mold comprising a first portion and a second portion, the first portion comprising an index-matched mold material that is index of refraction matched with the photomonomer resin and surrounding a minor part of the interior volume of the mold;
• a volume of an index-matched fluid that is index of refraction matched with the index-matched mold material;
• a photomask;
• the mold enclosing the volume of the photomonomer resin;
• and
• the volume of the index-matched fluid being inside the reservoir;
• the mold being at least partially submerged in the index-matched fluid;
• projecting a first beam of collimated light along a first direction through the photomask and into the interior volume of the mold;
• and
• subjecting an interior surface of the first portion of the mold to an adhesion-promoting treatment.