Multi-Photon Polymerization (MPP) is a technique used to fabricate complex micro-scale
3D structures using ultra-short laser pulses. Typically, MPP is used to manufacture
micron-scale components in photopolymer materials. However, the development of micron
scale processes that can produce components from multiple materials within a single
manufacturing step would be advantageous. This would allow the inclusion of particles
that are manipulated and embedded within structures with sub-micron feature sizes.
To achieve this, an MPP system was combined with an optical trapping (OT) setup in
order to independently manipulate microparticles in the x, y and z planes. Particles
were transported into the fabrication site using the OT and encapsulated using the
MPP laser. Here it is shown that combining the OT capabilities with an additive manufacturing
technique enables the production of complex multi-material artifacts.