Mr. Simonas Varapnickas Profile

Simonas Varapnickas

SPIE Involvement:

Author

Area of Expertise:

Laser materials processing , Nanopolymerization , Laser machining control

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Company Website

Publications (11)

Proceedings Article | 5 March 2022 Presentation

Enabling laser 3D printing of free-form micro-optics out of transparent inorganics

Diana Laura Gonzalez Hernandez, Simonas Varapnickas, Edvinas Skliutas, Darius Gailevicius, Mangirdas Malinauskas

Proceedings Volume PC12012, PC120120U (2022) https://doi.org/10.1117/12.2604365

KEYWORDS: Micro optics, Nonimpact printing, 3D printing, Tunable lasers, Optics manufacturing, Optical components, Laser applications, Ultrafast lasers, Remote sensing, Ranging

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Proceedings Article | 5 March 2021 Presentation

Glassy free-form 3D micro-optics enabled via ultrafast laser 3D nanolithography

Simonas Varapnickas, Meguya Ryu, Darius Gailevicius, Tai Suzuki, Greta Merkininkaite, Simas Sakirzanovas, Junko Morikawa, Saulius Juodkazis, Mangirdas Malinauskas

Proceedings Volume 11696, 1169610 (2021) https://doi.org/10.1117/12.2578469

KEYWORDS: Ultrafast lasers, Nanolithography, Micro optics, Glasses, Transparency, Refractive index, Prisms, Polymers, Photorefractive polymers, Lenses

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Proceedings Article | 31 March 2020 Presentation

Preparation of 3D glass ceramic micro-/nanostructures by combining laser nanolithography with calcination (Conference Presentation)

Greta Merkininkaitė, Edvinas Aleksandravičius, Darius Gailevicius, Simonas Varapnickas, Mangirdas Malinauskas, Simas Šakirzanovas

Proceedings Volume 11349, 113490E (2020) https://doi.org/10.1117/12.2555838

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Ceramics play an important role in today’s science and industry as it can withstand immense thermal, mechanical, chemical and other hazards. In recent years, the interest in 3D printing micro- or even nano-structures out of ceramics has been growing rapidly. Therefore, direct laser writing by two photon polymerization together with calcination have been proved to be a powerful tool for the fabrication of fully 3D glass-ceramic objects in micro- and nano-scale [1]. However, producing such structures with unique properties at meso scale (features from nm to cm overall size) is one of the greatest challenges [2]. In order to overcome it the composition of the starting materials and as well as conditions of calcination have to be fully understood and enhanced. We synthesized a series of organic-inorganic polymer precursors via sol-gel method varying the molar ratio of silicon (Si) and zirconium (Zr) complexes (Si:Zr, where Si=9; 8; 7; 6; 5 and Zr=1; 2; 3; 4; 5) [3] and investigated 3D processing of these materials. The study shows that the “glassy” phase structures retain their shape without any distortion. Furthermore, calcination provides a route for the continuous size control and formation of a variety of phase transformation for free-form nano-/micro-objects. It is shown that due to the isotropic nature of the shrinkage during calcination fabricated 3D objects retain complex geometry. Nano-woodpiles, bulk-woodpile hybrids and full bulk structures are formed. The sizes of single features in these objects vary from 120 nm to 800 nm with overall size going to 30 µm. Finally, changes in focused ion beam machining rates between standard and calcinated materials are shown proving enhanced resiliency of the final product (up to 50%). [1] Gailevičius, D., et al., Additive-manufacturing of 3D glass-ceramics down to nanoscale resolution. Nanoscale Horiz.; 4, 647-651; (2019) [2] L. Jonusauskas, D. Gailevicius, S. Rekstyte, T. Baldacchini, S. Juodkazis, M. Malinauskas, Mesoscale Laser 3D Printing, Opt. Express 27 (11), 15205-15221 (2019) [3] Ovsianikov, A., et al., Ultra-Low Shrinkage Hybrid Photosensitive Material for Two-Photon Polymerization Microfabrication. ACS Nano; 2(11), 2257-2262; (2008)

Proceedings Article | 31 December 2019 Paper

Graphene on silicon-nitride photodetector

Tania Moein, Darius Gailevicius, Tomas Katkus, Soon Hock Ng, Stefan Lundgaard, Simonas Varapnickas, David Moss, Hamza Kurt, Vygantas Mizeikis, Kestutis Staliunas, Mangirdas Malinauskas

Proceedings Volume 11201, 1120105 (2019) https://doi.org/10.1117/12.2543391

KEYWORDS: Photodetectors, Graphene, Silicon, Sensors, Near infrared, Lithography, Metals, Nanofabrication, Laser applications

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Proceedings Article | 18 October 2019 Presentation

Nanoscale 3D laser additive manufacturing of highly resilient glass ceramics (Conference Presentation)

Darius Gailevičius, Greta Merkininkaite, Viktorija Padolskyte, Simonas Varapnickas, Meguya Ryu, Junko Morikawa, Vygantas Mizeikis, Simas Sakirzanovas, Saulius Juodkazis, Mangirdas Malinauskas

Proceedings Volume 11168, 111680F (2019) https://doi.org/10.1117/12.2532804

KEYWORDS: Lithography, Ultrafast lasers, Additive manufacturing, Spatial resolution, Optical properties, Thermography, Optical sensors, Environmental sensing

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Proceedings Article | 22 May 2018 Paper

Polarization effects in 3D femtosecond direct laser writing nanolithography

Simonas Varapnickas, Sima Rekštytė, Darius Gailevičius, Etienne Brasselet, Saulius Juodkazis, Mangirdas Malinauskas

Proceedings Volume 10675, 106750V (2018) https://doi.org/10.1117/12.2306904

KEYWORDS: Polarization, Nanolithography, Dielectric polarization, Femtosecond phenomena, Multiphoton lithography, Birefringence, Polymers, Polarization control, Laser damage threshold, 3D printing, 3D microstructuring, Nanotechnology

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Proceedings Article | 16 March 2018 Paper

Local temperature measurement during ultrafast laser 3D nanolithography writing

S. Varapnickas, D. Baziulyte-Paulaviciene, L. Jonušauskas, S. Sakirzanovas, M. Malinauskas

Proceedings Volume 10520, 105201I (2018) https://doi.org/10.1117/12.2287826

KEYWORDS: Temperature metrology, Laser processing, 3D metrology, Multiphoton lithography, Polymerization, Scanning electron microscopy, 3D microstructuring, Nanolithography, In situ metrology, Laser damage threshold

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Proceedings Article | 19 February 2018 Paper

Which period ripples will form on the ablated surface: subwavelength or deep-subwavelength?

Tomas Katkus, Denver Linklater, Simonas Varapnickas, Stefan Lundgaard, Soon Hock Ng, Simon Moulton, Pierre-Louis de Assis, Stanislav Moshkalev, Mangirdas Malinauskas, Saulius Juodkazis

Proceedings Volume 10522, 105220U (2018) https://doi.org/10.1117/12.2300731

KEYWORDS: Plasma, Pulsed laser operation, Interfaces, Laser applications, Picosecond phenomena, Dielectrics, Bacteria, Laser ablation, Laser cutting, Chromium

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Proceedings Article | 2 January 2018 Paper

Upconverting nanocrystals as luminescent temperature probes for local-heating imaging during direct laser writing 3D nanolithography

Simonas Varapnickas, Dovilė Baziulytė-Paulavičienė, Simas Šakirzanovas, Mangirdas Malinauskas

Proceedings Volume 10456, 104564F (2018) https://doi.org/10.1117/12.2283224

KEYWORDS: Erbium, Ytterbium, Nanocrystals, Luminescence, Temperature metrology, Polymerization, Nanolithography, Ions, Polymers, Calibration

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Proceedings Article | 1 August 2017 Paper

3D laser printing by ultra-short laser pulses for micro-optical applications: towards telecom wavelengths

Meguya Ryu, Vygantas Mizeikis, Junko Morikawa, Hernando Magallanes, Etienne Brasselet, Simonas Varapnickas, Mangirdas Malinauskas, Saulius Juodkazis

Proceedings Volume 10339, 1033906 (2017) https://doi.org/10.1117/12.2270706

KEYWORDS: Optical components, Nonimpact printing, 3D printing, Laser applications, Light-matter interactions, Laser optics, Laser induced damage, Glasses

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Proceedings Article | 17 February 2017 Presentation + Paper

Plasmonically enhanced 3D laser lithography for high-throughput nanoprecision fabrication

Linas Jonušauskas, Simonas Varapnickas, Gabrielius Rimšelis, Mangirdas Malinauskas

Proceedings Volume 10092, 1009218 (2017) https://doi.org/10.1117/12.2249595

KEYWORDS: Nanoparticles, Laser processing, Plasmonics, Materials processing, Photopolymers, Doping, Femtosecond phenomena, 3D microstructuring, Ultrafast lasers, Laser ablation, Gold, Polymers, Metamaterials, Pulsed laser operation, Lithography, Laser damage threshold, Glasses, Mirrors

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Showing 5 of 11 publications

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