Research Group bandymas

Research Work

 

List of main publications.

• I. Dumbryte, M. Androulidaki, D. Narbutis, E. Skliutas, S. Juodkazis, E. Jasiuniene, M. Malinauskas, Novel insights into the tooth structural integrity at the microcrack site: combining X-ray tomography and photoluminescence, submitted (2024).

• I. Dumbryte, M. Androulidaki, D. Narbutis, E. Skliutas, S. Juodkazis, E. Jasiuniene, M. Malinauskas, Novel insights into the tooth structural integrity at the microcrack site: combining X-ray tomography and photoluminescence, submitted (2024).

• I. Dumbryte, M. Androulidaki, D. Narbutis, E. Skliutas, S. Juodkazis, E. Jasiuniene, M. Malinauskas, Novel insights into the tooth structural integrity at the microcrack site: combining X-ray tomography and photoluminescence, submitted (2024).

• I. Dumbryte, M. Androulidaki, D. Narbutis, E. Skliutas, S. Juodkazis, E. Jasiuniene, M. Malinauskas, Novel insights into the tooth structural integrity at the microcrack site: combining X-ray tomography and photoluminescence, submitted (2024).

• I. Dumbryte, M. Androulidaki, D. Narbutis, E. Skliutas, S. Juodkazis, E. Jasiuniene, M. Malinauskas, Novel insights into the tooth structural integrity at the microcrack site: combining X-ray tomography and photoluminescence, submitted (2024).

 

 

Project Showcase

 

Ongoing projects:

 

Completed projects:

Partners

 

Prof. Dr. Saulius Juodkazis | VU Adjunct Proffesor Saulius Juodkazis is Professor of Nanophotonics and Director of the Nanotechnology Facility (Nanolab) at Swinburne’s Optical Sciences Centre . His current research is focused on applying principles of light-field enhancement and its spectral control for applications in micro-optics, sensing, solid-state lighting, and solar energy conversion.

Prof. Dr. Saulius Juodkazis | VU Adjunct Proffesor Saulius Juodkazis is Professor of Nanophotonics and Director of the Nanotechnology Facility (Nanolab) at Swinburne’s Optical Sciences Centre . His current research is focused on applying principles of light-field enhancement and its spectral control for applications in micro-optics, sensing, solid-state lighting, and solar energy conversion.

 

 

International partners:		Partners in Lithuania:	VU partners:
Swinburne University of Technology, Nanofabrication Laboratory John St, Hawthorn VIC 3122, Australia Prof. S. Juodkazis	University of Bordeaux, SINGULAR Group Amphithéâtre 3 à 12, 33000 Bordeaux, France Dr. Etienne Brasselet	Kaunas University of Technology, Faculty of Chemical Technology Department of Polymer Chemistry and Technology	Life Sciences Center Department of Biological Models
Foundation for Research and Technology - Hellas Heraklion, Crete GR 700 13, Greece Dr. Maria Farsari	Universitat Politècnica de Catalunya Carrer de Jordi Girona, 31, 08034 Barcelona, Spain Prof. K. Staliunas	Femtika	Faculty of Chemistry and Geosciences Institute of Chemistry
Shizuoka University, Research Institute of Electronics 836 Oya, Suruga Ward, Shizuoka, 422-8529, Japan Prof. V. Mizeikis	Stanford University, X-Ray Diffraction Laboratory 450 Serra Mall, Stanford, CA 94305, USA Dr. Artūras Vailionis	Center for physical sciences and technology Laser Microfabrication Laboratory Laboratory of micro-optical components Laboratory of spectroelectrochemistry
University of Sheffield, Department of materials science and engineering Sheffield S10 2TN, UK Dr. F. Claeyssens	ENEA Research Center Via Enrico Fermi, 45, 00044 Frascati RM, Italy Dr. Mattia Cipriani	Workshop of Photonics

For Students

 

 

 

News

 

 

Optical Fellow Profile - Mangirdas Malinauskas:

optica.org/get_involved/awards_and_honors/fellow_members/fellow_profiles/mangirdas_malinauskas/

 

Newest submission:

D. Ladika, A. Butkus, V. Melissinaki, E. Skliutas, E. Kabouraki, S. Juodkazis, M. Farsari, M. Malinauskas, X-
photon 3D lithography by fs-oscillators: wavelength-independent and photoinitiator-free, Preprint, Research
Square (2023); https://doi.org/10.21203/rs.3.rs-3708475/v1

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Long and strong - Edvinas Skliutas defended his PhD on October 20th. Now we can call him Doctor :)

Congratuliations! Many thanks committee and audience for questions, family for foods and drinks.

 

 

3D resolution bridge (RB) printing and line analysis. (a) Illustration of GDD pre-compensated pulses propagating to the objective of NA = 1.4. After they pass the objective, τ = 100 fs at each λ; (b) Illustration of the RB method. The suspended single-voxel-wide lines are photopolymerized between support pillars, each row with different light intensity; (c) SEM image of the entire RB object with lines and support pillars. The white scale bar at the bottom right corner is 20 µm; (d) Scheme representing calculated n_ef for used excitation light and their arrangement over measured absorbance spectra of photosensitized SZ2080. Gray vertical arrows visualize a number of photons for ground-to-excited state transition. Credit: Virtual and Physical Prototyping (2023). DOI: 10.1080/17452759.2023.2228324

 

 

 

Student Jurga Jeršovaitė has been awarded the President Aleksandras Stulginskis (Mathematics, Informatics and Physical Sciences Study Group) scholarship and will not be bored this summer with her LMT Student Research Summer Project entitled: "Investigation the potential of 3D laser printing of the biodegradable PCL-A polymer for the fabrication and application in the production of biomedical scaffolds".

 

 

Newest publication:

E. Skliutas, D. Samsonas, A. Čiburys, L. Kontenis, D. Gailevičius, J. Beržins, D. Narbutis, V. Jukna, M. Vengris, S. Juodkazis, M. Malinauskas, X-photon laser direct write 3D nanolithography, Virtual. Phys. Prototyp. (2023); https://doi.org/10.1080/17452759.2023.2228324.  

LIGHT: ADVANCED MANUFACTURING - Call for papers to Special Issue on Extreme Manufacturing

https://light-am.com/news/index_tabliod_en/201ef0b9-fb9a-49ab-a6be-485e0fdd84f3_en.htm

Submission deadline: 31 October 2023

 

 

Prof. Mangirdas Malinauskas participated in the CLEO conference

 

 

 

 

 

 Team member Karolis Galvanauskas

graduated master's studies in 2023 

with Magna Cum Laude diploma  🎉🎉🎉

 

 

 

 

 

 

 

 

5 June 2023 - Guests from the Kyiv Polytechnic Institute of the National Technical University of Ukraine visit to make a presentation:

• Speaker: Prof. Sergii Stirenko

Presentation of the current NATO SPS project #G6032 “UAV Mosquito Fleet for Smart Swarm Operations (UAVM4SSO)”

Abstract

The Edge Intelligence concept of ultra-small and ultra-cheap Unmanned Aerial Vehicles (UAVs) with correlated behavior, UAV Mosquito Fleet (UAFMF), is proposed for implementation of Unmanned Drone Swarm Operations (UDSOs) in monitoring, rescue, reconnaissance, … operations. The main idea is to create UAFMF management platform, improve the state-of-the-art (SOTA) deep neural networks (DNNs) for UDSOs, and adopt DNNs for UAVs with the limited computing resources and power supply.

• Speaker: Dr. Yuri Gordienko

Review of the Current Object Detection Methods Used in NTUU KPI (Kyiv, Ukraine)

2.1. YOLOv4 - Context-Aware Data Augmentation for Efficient Object Detection by UAV Surveillance.

Abstract

The problem of object detection by YOLOv4 deep neural network (DNN) is considered on drone dataset with object classes (pedestrians, bicyclists, cars, skateboarders, golf carts, and buses) collected by Unmanned Aerial Vehicle (UAV) video surveillance. Some frames (images) with labels were extracted from videos of this dataset and structured in the open-access SDD frames (SDDF) version (https://www.kaggle.com/yoctoman/stanford-drone-dataset-frames). The context-aware data augmentation (CADA) was proposed to change bounding box (BB) sizes by some percentage of its width and height. Several CADA-sequences were analyzed and the best strategy consists in first-IN-then-OUT CADA procedures, where the extent of decrease and increase of BBs width and height can be different for various applications and datasets

2.2.Example 2: YOLOv5 family - Object Detection for Rescue Operations by High-altitude Infrared Thermal Imaging Collected by Unmanned Aerial Vehicles.

Abstract

The analysis of the object detection deep learning model YOLOv5, which was trained on High-altitude Infrared Thermal (HIT) imaging, captured by Unmanned Aerial Vehicles (UAV) is presented. The performance of the several architectures of the YOLOv5 model, specifically ’n’, ’s’, ’m’, ’l’, and ’x’, that were trained with the same hyperparameters and data is analyzed. The dependence of some characteristics, like average precision, inference time, and latency time, on different sizes of deep learning models, is investigated and compared for infrared HIT-UAV and standard COCO datasets. According to the findings, the significance and value of the research consist in comparing the performance of the various models on the datasets COCO and HIT-UAV, infrared photos are more effective at capturing the real-world characteristics needed to conduct better object detection.

2.3.Example 3: The Other Current Object Detection Methods and Future Plans Proposed by NTUU KPI (Kyiv, Ukraine)

Abstract

The real-world (from Russia’s war on Ukraine) UAV experience collected by the authors and end users will be reviewed in the context of possible application of advanced optical systems and AI-ML-DL-based methods.

3. Speakers: Dr. Olexandr Rokovyi, Oleg Alienin

Review of the Current UAV Navigation Methods Used in NTUU KPI (Kyiv, Ukraine)

Abstract

The current UAV operation experience collected by the authors and end users will be reviewed in the context of possible application of advanced optical systems and UAV navigation methods under field conditions in the dangerous operation zones.

Demo Conditions: The further details will be provided later, but at the moment we assume that any “playground” with the sizes (100 m * 100 m * 50 m) which is free of any objects will be sufficient to demonstrate the basic concepts and ideas. It could be like an empty football field or any kind of grass field, lawn, etc. This “playground” is assumed to be used for the further experiments at LRC.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Latest publication:

J. Jeršovaitė, U. Šarachovaitė, I. Matulaitienė, G. Niaura, D. Baltriukienė, M. Malinauskas,  Biocompatibility enhancement via post-processing of microporous scaffolds made by optical 3D printer. Front. Bioeng. Biotechnol., 11:1167753 (2023), https://doi.org/10.3389/fbioe.2023.1167753

 

 

 

We will give oral presentations at the CLEO conference (in the topicCE: Optical Materials, Fabrication and Characterisation of the CLEO/Europe-EQEC Conference).

 

Presentations by members of the Laser Nanophotonics Laboratory:

2023 yr June 26 d, Monday (8:30 - 8:45), Room 1 ICM

Prof. Mangirdas Malinaudkas will present:

Antanas Butkus, Edvinas Skliutas, Dimitra Ladika, Danielius Samsonas, Vasileia Melissinaki, Mikas Vengris, Maria Farsari, Saulius Juodkazis, Mangirdas Malinauskas, "Wavelength independent laser direct writing 3D nanolithography of non-photosensitized SZ2080^TM hybrid polymer"

 

2023 yr June 30 d., Friday (16:30 - 16:45), Room 12a ICM

Karolis Galvanauskas will present:

 

 

 

 

 

 Recent Fellows - Awards & Grants – The Optical Society (OSA) | Optica - Mangirdas Malinauskas
Laser Research Center at Vilnius University, Lithuania
For advancing ultrafast laser 3D lithography and pioneering work towards applying it for micro-optics and biomedical scaffolds

OPTICA_Fellow_2023.pdf

 

We invite you to free online event: "INSPIRE WITH ECO-INNOVATIONS". Feb 8, 2023. More information: Inspire_with_Eco-innovations.pdf

 

First publication this year:

 

Latest publication:

 

New publication was accepted:

D. Samsonas, E. Skliutas, A. Čiburys, L. Kontenis, D. Gailevivčius, J. Berzins, D. Narbutis, V. Jukna, M. Vengris, S. Juodkazis, M. Malinauskas, 3D nanopolymerization and damage thresholds dependence on laser wavelength and pulse duration, Nanophotonics, accepted (2022).

Latest publication:

V. Sereikaite, A. Navaruckiene, J. Jaras, E. Skliutas, D. Ladika, D. Gray, M. Malinauskas, V. Talacka, J. Ostrauskaite, Functionalized Soybean Oil- and Vanillin-Based Dual Cure Photopolymerizable System for Light-Based 3D Structuring, Polymers, 14, 5361 (2022); https://doi.org/10.3390/polym14245361. [Q1, IF - 4.967]

 

https://youtu.be/68qOQthj-CI 

Lastest publications:

October 26 (wednesday) 13h LTC 604

Scientific seminar

 

Latest publication:

 

 

Jurga Jeršovaitė won Nominal Vilnius University Technology Hub (VU Tech Hub)  scholarship!

 

 

A new article has been submitted to the press:

E. Skliutas, D. Samsonas, A. Čiburys, L. Kontenis, D. Gailevičius, J. Gerziniš, D. Narbutas, V. Jukna, M. Vengris, S. Juodkazis, and M. Malinauskas, X-photon laser direct write 3D nanolithography, under review (2022): X-photon laser direct write 3D nanolithography | Research Square .

 

A new article has been submitted to the press:

D. Gonzalez-Hernandez, S. Varapnickas , A. Bertoncini, C. Liberale, and M. Malinauskas, Micro-Optics 3D Printed via Multi-Photon Laser Lithography, under review (2022).

 

In the summer school VI 'PHOTONIC MEETS BIOLOGY' Spetses, Greece, Jurga Jeršovaitė wins best student talk award

 

A new article has been submitted to the press:

A. Butkus, E. Skliutas, D. Gailevicius and M. Malinauskas, Femtosecond-Laser Direct Writing 3D Micro-/Nano-Lithography Using VIS-Light Oscillator, under review (2022).

 

Keynote presentation at AOMTA & YSAOM 2022 conference

Mangirdas Malinauskas will present at the "International Conference on Advanced Optical Manufacturing Technologies & Applications 2022 & 2nd International Forum of Young Scientists on Advanced Optical Manufacturing" conference that will be held in Changchun, China (more information: https://b2b.csoe.org.cn/meeting/YSAOM2022.html#150_163):

M. Malinauskas, Ultrafast laser 3D lithography for micro-nano additive manufacturing of bioresins and inorganics, AOMTA & YSAOM (29th to 31st July 2022).

 

 

 

We will participate in the summer school VI 'PHOTONIC MEETS BIOLOGY' Spetses, Greece

Two members of Laser Nanophotonics will present seminars:

M. Malinauskas, Optical 3D Printing of Plant-Based Resins and Ceramic Materials, VI 'PhotonicsMeetsBiology' (27 July - 1 August 2022).

J. Jeršovaitė, U. Šarachovaitė, I. Matulaitienė, G. Niaura, D. Baltriukienė and M. Malinauskas, Biocompatibility evaluation and enhancement in vitro of optically 3D printed micro-porous scaffolds, VI 'PhotonicsMeetsBiology' (27 July - 1 August 2022).

 

 

 

 

X-ray microtomography is a new tool for today's materials research

June 28 The Laser Research Center (LTC) was visited by Stanford University researcher Dr. Artūras Vailionis.

Fig. 1: dr. A. Vailionis in The Laser Research Center (LTC) (2022.06.28).

During the meeting Dr. A. Vailionis gave a presentation to scientists and the general public on the topic "Introduction to X-ray computed microtomography", which introduced the audience to the main principles and applications of X-ray computed microtomography (µXCT).

Fig. 2: An image of the entire tooth was obtained using X-ray computed microtomography (µXCT).

Dr. Artūrs Vailionis' report read at LMA events - Lithuanian Academy of Sciences can be found at the attached link: https://youtu.be/5CEnIXGQHVE.

 

 

Latest publication:

 G. Merkininkaitė, E. Aleksandravičius, M. Malinauskas, D. Gailevičius and S. Šakirzanovas, Laser additive manufacturing of Si/ZrO2 tunable crystalline phase 3D nanostructures, Opto-Electron Adv, 5, 210077 (2022), doi: 10.29026/oea.2022.210077.

 

 

 

Latest publication:

J. Jaras, A. Navaruckiene, E. Skliutas, J. Jersovaite, M. Malinauskas and J. Ostrauskaite, Thermo-Responsive Shape Memory Vanillin-Based Photopolymers for Microtransfer Molding, Polymers, 14(12), 2460 (2022), https://doi.org/10.3390/polym14122460.

 

500 EUR dr. Remi Gaška's named scholarship for the best bachelor's thesis on the topic "Optical 3D printing of microporous scaffolds, their biocompatibility evaluation and enhancement in vitro" was awarded to Jurga Jeršovaite, a student of the IV year of the Bachelor's full-time studies of the Applied Physics program of the Faculty of Physics.