MULTIPHOTON POLYMERIZATION

Microfabrication by multi-photon polymerization is a direct laser-write technique which allows 3D sturcturing of photopolymers at the micro- and nano-scale. This can be achieved through combination of various nonlinear effects, careful consideration of laser radiation parameters and precise focusing conditions. For this reason 3D laser lithography was used for creation of functional devices in fields of nanophotonics, microoptics, microfluidics, micromechanics, tissue engineering and much more. It is important to note, that there is huge variety of materials that can be processed by applying 3D laser lithography, including hybrid organic-inorganic photopolymers, biodegradable polymers, elastomers, proteins and so on.

Examples:


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3D Chain-mail structure
Functional intertwined geometries such as “chain-mail” allow creating structures out of hard material that are flexible in macro scale
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3D gyroid structure
Complex, mechanically rigid, but light micro-structure
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3D meso-spring
Single helix three turn 3D meso-spring for micro-mechanical applications
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3D structures on fiber tip
3D structures of arbitrary geometry for light modulation purposes. Doi.org/10.1117/12.2265761
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Flexible cantilever
High aspect ratio 3D structure ~1:40. Doi.org/10.1117/12.2506862
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Micro optics
Fresnel-like lens with varying aspherical profile in each Fresnel zone for superb nearly spherical aberration-free focusing
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Micro scaffolds
Millimeter sized 3D scaffold with high aspect ratio micro features and arbitrary 3D architecture
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Photonic crystal
Photonic devices on high-resolution (up to hundreds on nm) single features
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Relatively large structures
3D objects in range of hundreds of µm combining arbitrary shape, high aspect ratio, fine and suspended structure