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Ultraviolet and Infrared Femtosecond Laser Irradiation of Thermoplastics PET and PA66

Wednesday (24.06.2020)
13:40 - 13:43 Room 1
Part of:
- Poster Periodic microstructuring of metal moulds using direct laser interference patterning for nanoimprint replication 1 Dr. Marcos Soldera
- Poster Comparison of structural colors achieved by laser induced periodic surface structures and direct laser interference patterning 1 Dr. Marcos Soldera
- Poster *student* Wetting properties of the aluminium surface structures fabricated using Direct Laser Interference Patterning with picosecond and femtosecond pulses 1 Dipl.-Ing. Stephan Milles
- Poster The numerical realization of a model of interaction of ultrashort laser pulses with solid 1 Prof. Vladimir Zhukov
- Poster On the problem of the initial conditions for tightly-focused ultrashort laser pulses in the modeling of laser beam propagation in transparent solids 1 Prof. Vladimir Zhukov
- Poster Innovative polymer coating systems – applied by laser sintering technique 1 Dr. Anna Buling
- Poster Tangential laser turning of fused silica usin ultra-short laser pulses 1 Julian Zettl
- Poster Process optimization of Direct Laser Interference Patterning 1 Dr. Bogdan Voisiat
- Poster Dynamic aberration correction via spatial light modulator (SLM) for femtosecond direct laser writing 1 Gabrielius Kontenis
- Poster Modification of metal nanoparticles via femtosecond laser pulses and their application for SERS 1 Dr. Asta Tamuleviciene
- Poster Ultraviolet and Infrared Femtosecond Laser Irradiation of Thermoplastics PET and PA66 1 Dr. Xxx Sedao
- Poster High pulse energy femtosecond laser machining station for the interference and parallel processing 1 Dr. Simonas Indrisiunas
- Poster Laser material processing with a multi-beam setup based on Excited State Absorption 1 Sebastian Engel
- Poster GO-neutral red nanocomposite reduction by pulsed laser irradiation 1 Dr. Romualdas Trusovas
- Poster *student* Numerical simulation of energy relaxation in Mo thin films exposed to femtosecond laser pulse 1 Kryštof Hlinomaz
- Poster Modification of medical-grade poly(L-lactide) using femtosecond laser filamentation 1 Dr. Bogusz Stepak
Session Chair

Session PS: Poster Session 02
Belongs to:
Topic PS: Poster Session

Polyethylene terephthalate (PET) and Polyamide66 (PA66, or Nylon) are important thermoplastic polymers ubiquitous in all walks of life. Depending on their applications, various surface functionalities are desired to enhance their performance, such as reduced friction coefficient, self-cleaning, anti-fouling etc. One of the possible ways to render a surface with above mentioned functionalities is through ultrafast laser surface patterning [1-2]. In order to assess the viability of surface patterning by ultrafast laser, a comparative study was carried out to investigate the nature of the interactions between the polymers of interest and femtosecond laser pulses, in Infrared (IR) wavelength and Ultraviolet wavelength regimes. Two laser sources were deployed, one at 800 nm wavelength with a pulse duration of 60 femtosecond (fs), and the other at 257 nm with a pulse duration of 190 fs, with the former prone to non-linear surface interaction, and the later for direct bond-breaking reactions. The ablation thresholds for two polymers were extrapolated for 800 nm and 257 nm conditions. The ablation morphologies were evaluated. And surface chemical states were characterized.


It turns out that the interaction depends strongly on laser wavelengths, as well as laser beam intensity profile on the sample, and irradiation conditions (laser energy, the number of pulses, etc). Different surface morphologies and topographies were observed, closely related to UV and IR irradiation conditions. Surface chemical decomposition was observed in both UV and IR regimes, under certain irradiation conditions.


Ultrafast laser ablation of both PET and PA66 produces clean, smooth, and well-defined crater profiles (see figure 1a the upper SEM micrographs). Nonetheless, a marked surface decomposition was identified at irradiated PA66 surface (figure 1b), which is supposedly undesirable for polymer processing and surface functionalization applications. With the exception of high fluence operation conditions, ultrafast laser processing in IR does not degrade surface chemistry significantly (not shown here), but the craters are somehow rougher with splashes presented in the vicinity.

Dr. Xxx Sedao
Université Jean Monnet
Additional Authors:
  • Dr. Hyeon Jin Jung
    Université Jean Monnet
  • Dr. Erika-Katerina Koussi
    Université Jean Monnet
  • Nicolas Faure
    Université Jean Monnet
  • Prof. Dr. Christophe Donnet
    Université Jean Monnet
  • Prof. Dr. Cyril Mauclair
    Université Jean Monnet
  • Dr. Alina Pascale-Hamri
    GIE Manutech-USD


Category Short file description File description File Size
Poster Version 1 UV/IR fs Laser Irradiation of PET & PA66 87 KB Download
Poster poster format A0 pdf 1 MB Download
Poster poster format A0 pdf version 2 poster pdf 1 MB Download
Poster poster format A0 pdf final version Version to be included in the digital booklet 1 MB Download