Ultrafast multi-focus 3-D nano-fabrication based on two-photon polymerization

Two-Photon Polymerization Fabrication of Doped Microstructures

Large-format fabrication by two-photon polymerization in SU-8

Microporous structures are central to many fields of science and engineering, but many of these systems are complex with little or no symmetry and are difficult to fabricate. We applied two-photon polymerization (2PP) and femtosecond laser direct-writing techniques to fabricate broadarea large-format 3D microporous structures (450 μm × 450 μm × 40 μm) in the epoxy-based photoresist SU-8. The ap...

Ultrafast single photon emitting quantum photonic structures based on a nano-obelisk

A key issue in a single photon source is fast and efficient generation of a single photon flux with high light extraction efficiency. Significant progress toward high-efficiency single photon sources has been demonstrated by semiconductor quantum dots, especially using narrow bandgap materials. Meanwhile, there are many obstacles, which restrict the use of wide bandgap semiconductor quantum dot...

Design, Fabrication and Computational Characterization of a 3D Micro-Valve Built by Multi-Photon Polymerization

We report on the design, modeling and fabrication by multi-photon polymerization of a complex medical fluidic device. The physical dimensions of the built micro-valve prototype are compared to those of its computer-designed model. Important fabrication issues such as achieving high dimensional resolution and ability to control distortion due to shrinkage are presented and discussed. The operati...

The Development of a Long-Stroke Precision Positioning Stage for Micro Fabrication by Two-Photon Polymerization

This paper applies a combined precision stage to fabricate micro-structures by two-photon polymerization (TPP). The combined stage consists of PZT and stepper-motor stages to achieve precision positioning in long displacements. First, we derive the models of the stages by identification experiments. Second, we apply robust loop-shaping techniques to improve the positioning performance of the st...