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Materials Science Research Lecture

Wednesday, February 7, 2024
4:00pm to 5:00pm
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Noyes 153 (J. Holmes Sturdivant Lecture Hall)
Laser X-Photon Lithography for Nano-Additive Manufacturing
Mangirdas Malinauskas, Professor, Group leader of Laser NanoPhotonics, Vilniaus University,

***Refreshments at 3:45pm in Noyes lobby


A multi-photon 3D micro-/nano-lithography technique will be introduced by explaining its principles, techniques, applications as a tool for rapid prototyping and technology for advanced additive manufacturing.

A possibility to use any color of spectrum from 500-nm-to-1200-nm with controlled pulse widths of 100-fs will be demonstrated revealing a delicate interplay of photo-physical mechanisms more than just two-photon absorption inducing localized photo-polymerization. An evolution of the polymerised volume during direct laser writing (DLW) via different energy delivery mechanisms will be discussed: one-/two-/three-photon absorption, avalanche ionization, and thermal diffusion leading to controlled photo-polymerization are revealed. The results can be used to tailor polymerized volume for increasing the 3D nano-printing performance. A non-trivial energy deposition by X-photon absorption with an onset of a strong lateral size increase at the higher pulse energy at longer wavelengths and can be understood as due to reaching epsilon-near-zero conditions. Such recent findings are valuable for further developing of two-photon polymerization / multi-photon lithography (2PP/MPL) technology to reduce the footprint size and increase its efficiency. Understanding mechanisms and appearance of λ-tunable commercial lasers are benefiting broad applications in advanced optical additive manufacturing areas of micro-optics, nano-photonic devices, meta-materials, and integrated-chips, and tissue engineering.

Finally controlled refractive index, high transparency and resilient as well as active micro-optical components will be showcased as their production route is enabled X-photon lithography in combination with calcination and atomic layer deposition. The achievements have immediate applications in sensing under harsh conditions, open space, and unmanned aerial vehicles (UAV).

  1. Edvinas Skliutas et al., X-photon laser direct write 3D nanolithography, Virt. Phys. Prototyp. 18(1), e2228324 (2023); 10.1080/17452759.2023.2228324
  2. D. Gonzalez-Hernandez et al., Single-step 3D printing of micro-optics with adjustable refractive index by ultrafast laser nanolithography, Adv. Opt. Mater. 11(14) (2023);
  3. G. Balčas et al., Fabrication of Glass-Ceramic 3D Micro-Optics by Combining Laser Lithography and Calcination. Adv. Funct. Mater. 2215230 (2023);

More about the Speaker:

Mangirdas Malinauskas defended Ph.D. in 2010 at Vilnius University, Laser Research Center - "Laser Fabrication of Functional 3D Polymeric Micro/Nanostructures", supervisor Prof. R. Gadonas. During career he has done traineeships at LZH (Prof. B.N. Chichkov) and IESL-FORTH (Dr. M. Farsari). In 2019-2022 a specially appointed Professor at Tokyo Institute of Technology (Japan), group of Prof. J. Morikawa. Currently he investigates fundamentals of laser 3D micro-/nano-structuring of cross-linkable materials for applications in micro-optics, nano-optics (photonics), and biomedicine at VU LRC. Laboratory funding is acquired via National, European, and worldwide (NATO, US Army) schemes. Optica Fellow in 2022.

For more information, please contact Jennifer Blankenship by email at [email protected].