Details
| Original language | English |
|---|---|
| Pages (from-to) | 6243-6250 |
| Number of pages | 8 |
| Journal | Applied surface science |
| Volume | 257 |
| Issue number | 14 |
| Publication status | Published - 18 Feb 2011 |
| Externally published | Yes |
Abstract
This manuscript presents a study of physical and chemical properties of microchannels fabricated by femtosecond laser processing technology in thermoplastic polymeric materials, including poly(methyl methacrylate) (PMMA), polystyrene (PS) and cyclic olefin polymer (COP). By surface electron microscopy and optical profilometry, the dimensions of microchannels in the polymers were found to be easily tunable, with surface roughness values comparable to those obtained by standard prototyping techniques such as micromilling. Through colorimetric analysis and optical microscopy, PMMA was found to remain nearly transparent after ablation while COP and PS darkened significantly. Using infrared spectroscopy, the darkening in PS and COP was attributed to significant oxidation and dehydrogenation during laser ablation, unlike PMMA, which was found to degrade by a thermal depolymerization process. The more stable molecular structure of PMMA makes it the most viable thermoplastic polymer for femtosecond laser fabrication of microfluidic channels.
Keywords
- Ablation, Femtosecond laser, Microfluidics, Polymer
ASJC Scopus subject areas
- Chemistry(all)
- General Chemistry
- Physics and Astronomy(all)
- Condensed Matter Physics
- Physics and Astronomy(all)
- General Physics and Astronomy
- Physics and Astronomy(all)
- Surfaces and Interfaces
- Materials Science(all)
- Surfaces, Coatings and Films
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In: Applied surface science, Vol. 257, No. 14, 18.02.2011, p. 6243-6250.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Femtosecond laser ablation of polymeric substrates for the fabrication of microfluidic channels
AU - Suriano, Raffaella
AU - Kuznetsov, Arseniy
AU - Eaton, Shane M.
AU - Kiyan, Roman
AU - Cerullo, Giulio
AU - Osellame, Roberto
AU - Chichkov, Boris N.
AU - Levi, Marinella
AU - Turri, Stefano
N1 - Funding information: This work was supported by the European Commission, FP7 Project Contract no. ICT-2007-224205 (microFLUID – micro-Fabrication of polymeric Lab-on-a-chip by Ultrafast lasers with Integrated optical Detection). The authors thank the Institut für Mikrotechnik Mainz (IMM), Germany, for providing micromilled samples and Dario Picenoni for ESEM images.
PY - 2011/2/18
Y1 - 2011/2/18
N2 - This manuscript presents a study of physical and chemical properties of microchannels fabricated by femtosecond laser processing technology in thermoplastic polymeric materials, including poly(methyl methacrylate) (PMMA), polystyrene (PS) and cyclic olefin polymer (COP). By surface electron microscopy and optical profilometry, the dimensions of microchannels in the polymers were found to be easily tunable, with surface roughness values comparable to those obtained by standard prototyping techniques such as micromilling. Through colorimetric analysis and optical microscopy, PMMA was found to remain nearly transparent after ablation while COP and PS darkened significantly. Using infrared spectroscopy, the darkening in PS and COP was attributed to significant oxidation and dehydrogenation during laser ablation, unlike PMMA, which was found to degrade by a thermal depolymerization process. The more stable molecular structure of PMMA makes it the most viable thermoplastic polymer for femtosecond laser fabrication of microfluidic channels.
AB - This manuscript presents a study of physical and chemical properties of microchannels fabricated by femtosecond laser processing technology in thermoplastic polymeric materials, including poly(methyl methacrylate) (PMMA), polystyrene (PS) and cyclic olefin polymer (COP). By surface electron microscopy and optical profilometry, the dimensions of microchannels in the polymers were found to be easily tunable, with surface roughness values comparable to those obtained by standard prototyping techniques such as micromilling. Through colorimetric analysis and optical microscopy, PMMA was found to remain nearly transparent after ablation while COP and PS darkened significantly. Using infrared spectroscopy, the darkening in PS and COP was attributed to significant oxidation and dehydrogenation during laser ablation, unlike PMMA, which was found to degrade by a thermal depolymerization process. The more stable molecular structure of PMMA makes it the most viable thermoplastic polymer for femtosecond laser fabrication of microfluidic channels.
KW - Ablation
KW - Femtosecond laser
KW - Microfluidics
KW - Polymer
UR - http://www.scopus.com/inward/record.url?scp=79953029406&partnerID=8YFLogxK
U2 - 10.1016/j.apsusc.2011.02.053
DO - 10.1016/j.apsusc.2011.02.053
M3 - Article
AN - SCOPUS:79953029406
VL - 257
SP - 6243
EP - 6250
JO - Applied surface science
JF - Applied surface science
SN - 0169-4332
IS - 14
ER -