Laser Nanofactory Multi-Photon Polimerization

FEATURES

  • Nanometer resolution additive manufacturing technique
  • True 3D structures in micrometer scale
  • Various polymers available
  • Stitching error-free manufacturing
Laser Nanofactory

Multiphoton-polymerization (MPP) is a technology that enables the production of arbitrary shape polymeric structures within submicrometric resolution. First, a photoresist sample is prepared by drop-casting polymer material mixed with a photoinitiator on the glass slide and then pre-baking. Afterward, the 3D microstructure is fabricated using a direct laser writing technique. Consequently, the polymer hardens in places of drop where it is affected by laser radiation due to a process called photopolymerization. Finally, the microstructure is immersed in an organic solvent to develop an unpolymerized photoresist.

MPP has become a popular choice in the manufacturing of microelectronic devices due to its exceptional ability to produce intricate and precise structures. Its highly focused light source also enables the creation of complex 3D shapes with ease.

Applications

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Manufacturing Examples Specifications Drawings Downloads

Specifications

Technology Additive manufacturing
Materials SZ2080, SU-8, Ormocers, Glassomer, hybrid organic-inorganic photopolymers, elastomers, proteins
Minimum XY feature size 150 nm
Minimum surface roughness Ra ≤ 20 nm
Maximum fabrication speed 30 mm/s
Femtosecond Laser Source
Wavelength 780 nm 1030 ± 10 nm
515 ± 10 nm
Repetition rate 100 MHz 11 MHz … 76 MHz Single-shot – 1 MHz
Pulse duration < 100 fs 50 fs
120 fs
170 fs		 290 fs – 20 ps (tunable)
Max. average power 250 mW 2 W 5 W
Long-term power stability < 0.5% RMS over 24 h < 0.5% RMS over 100 h
Linear stages with synchronized Galvano scanners
XYZ positioning stages mounted on granite base with bridge Travel (XYZ) 1) 160 mm × 160 mm × 60 mm
Accuracy (XYZ) ± 300 nm
Resolution (XYZ) 1 nm
Maximum speed (XY) 200 mm/s
Galvano scanners Accuracy 50 μrad
Repeatability 0.4 µrad RMS
  1. Customizable.
Other parameters
Monitoring on time The fabrication process is monitored by an integrated machine vision system
Stitching Stitchless fabrication using Infinite Field of View (IFoV)
Focusing optics Objectives – from 0.4 to 1.4 NA 1)
Autofocus system Automatic glass/polymer or glass/air interface optical detection
Self-Align-System (SAS) Automatic laser beam path alignment system
Substrate Universal vacuum sample holder with computer-controlled, position synchronized illumination for transparent samples
Beam delivery & control Motorized attenuator, polarization rotator, beam expander. Integrated power meter enables real-time power monitoring
Software Convenient control of all necessary process parameters and machine settings. The software handles standard formats of 3D designs created by popular CAD programs, like STL
Laser safety Ergonomic housing to ensure laser safety class 1 and environment stability conditions for laser microfabrication process
  1. Customizable.
Physical Dimensions
Dimensions when all doors are closed (W × L × H) 1790 mm × 920 mm × 2270 mm
Dimensions when doors are opened (W × L × H) 2680 mm × 1900 mm × 2300 mm
Weight ~ 700 kg
Environmental & Utility Requirements
Operating temperature 1) 20 ± 2 °C
Relative humidity 1) ≤ 60%
Electrical requirements 110 V AC, 20 A – 230 V AC , 10 A
AC power (normal operation) typical 2 kW
  1. The conditions of the environment are preferred to be as stable as possible.

Drawings & Images

Laser Nanofactory dimensions in milimeters

Laser Nanofactory drawings

Laser Nanofactory image

Downloads

Laser Nanofactory. Multiphoton Polymerization

Product datasheet.

Rev. 230516. Filetype: pdf. Size 316.4 KB.

Hybrid Additive-Subtractive Ultrafast 3D Microfabrication Systems and Services

Product catalog.

Filetype: pdf. Size 1.7 MB.

Manufacturing examples

Photonic Crystal

The multiphoton polymerization technique enables the production of arbitrary shaped 3D structures from various polymers. The single linewidth of the woodpile photonic crystal shown in the illustration is lower than 200 nm.

3D Chain-Mail Structure

Standard 3D printing does not enables printing of movable structures. These structures can be fabricated inside a gel or liquid monomer by using the multiphoton polymerization technique which makes support‑free 3D printing possible.

3D Gyroid Structure

Multi-photon polymerization is a suitable technology for meta-material fabrication. Metamaterials are composites whose physical properties are different from those of the materials they are made from.

Fresnel Lens

Microoptics is one of the applications for multi‑photon polymerization (MPP) technology. The illustrated lens has a diameter of 500 µm. Superb nearly spherical aberration-free focusing can be obtained in each Fresnel zone.

3D Structures on Fiber Tip

The microlens with a diameter of 50 µm is fabricated on top of the fiber. The 3D supports ensure a required 250 µm distance between the fiber tip and the lens.

3D Scaffold

Scaffold-like structure can be produced within a resolution of up to 150 nm capable of entrapping submicrometer sized cells by multiphoton polymerization (MPP) technique.

Ceramic Structures

The multiphoton polymerization technique with hybrid polymers in combination with pyrolysis enables the removal of the organic part of the polymer and produces ceramic structures.  Structure shrinkage during pyrolysis is homogeneous and is approximately 25 %.

Prism for Elipsometry

Multiphoton polymerization is a flexible technique that allows different quality and various functionality surfaces to be maintained on the same structures depending on the needs of the application.

3D Meso-Spring

3D laser lithography is a suitable technology for the production of high-precision micromechanical components, an example being the single-helix three-turn 3D meso-spring for micro-mechanical applications.

Microneedles

One of the best ways to produce them is the multi-photon polymerization technique which enables the production of precise and firm microneedles. Even more complex shapes of polymeric needles can be obtained by maintaining the high sharpness of the needle tips.