Nanosecond laser-induced periodic surface structuring of cross-linked azo-polymer films

Berta, M.; Biver, Emeric; Maria, Sébastien; Phan, Trang N. T.; D’Aléo, Anthony; Delaporte, Philippe; Fagès, Frédéric; Gigmès, Didier

doi:10.1016/j.apsusc.2013.06.074

Cited by 7 publications

(8 citation statements)

References 29 publications

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“…Different strategies can be studied to modify the material surface in a controlled way using a patterning approach [39]. For example, ultra-short lasers are used to produce very precise ablation, thus reducing the thermal impact and enabling highly defined patterns [40,41] or the creation of ripples [42,43]. However, the use of these lasers does not extend to the manufacturing industry, because of their high cost.…”

Section: Introductionmentioning

confidence: 99%

Creation of Superhydrophobic and Superhydrophilic Surfaces on ABS Employing a Nanosecond Laser

2018

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A nanosecond green laser was employed to obtain both superhydrophobic and superhydrophilic surfaces on a white commercial acrylonitrile-butadiene-styrene copolymer (ABS). These wetting behaviors were directly related to a laser-induced superficial modification. A predefined pattern was not produced by the laser, rather, the entire surface was covered with laser pulses at 1200 DPI by placing the sample at different positions along the focal axis. The changes were related to the laser fluence used in each case. The highest fluence, on the focal position, induced a drastic heating of the material surface, and this enabled the melted material to flow, thus leading to an almost flat superhydrophilic surface. By contrast, the use of a lower fluence by placing the sample 0.8 µm out of the focal position led to a poor material flow and a fast cooling that froze in a rugged superhydrophobic surface. Contact angles higher than 150° and roll angles of less than 10° were obtained. These wetting behaviors were stable over time.

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Section: Introductionmentioning

confidence: 99%

Creation of Superhydrophobic and Superhydrophilic Surfaces on ABS Employing a Nanosecond Laser

2018

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“…LIPSS are also attractive for potential applications, which include a rapid fabrication method of diffraction gratings; recently it has also been suggested that LIPSS could be used as plasmonic structures [13,14]. LIPSS can be induced both in bulk and thin films materials as it has been extensively reported in the literature for a wide variety of materials including metals, semiconductors, dielectrics and polymers [15][16][17][18][19][20][21][22]. Either CW or pulsed lasers from microseconds to femtoseconds, at wavelengths in the UV, VIS or IR ranges have been used to generate LIPSS.…”

Section: Introductionmentioning

confidence: 99%

Laser-induced periodic surface structures on bismuth thin films with ns laser pulses below ablation threshold

Reyes-Contreras¹,

Camacho‐López²,

Olea-Mejía³

et al. 2017

Opt. Mater. Express

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We demonstrate the formation of laser-induced periodic surface structures (LIPSS) in bismuth (Bi) thin films by irradiation with nanosecond laser pulses. We report on the formation and the destruction of the LIPSS as a result of the delivered number of pulses; both the formation and destruction threshold were very well determined. Results show that the obtained LIPSS are perpendicular to the laser polarization, and their ripple periodicity is on the order of the irradiation wavelength. Although all the irradiation experiments were done in ambient air, Raman micro-spectroscopy indicates that the LIPSS are constituted by metallic bismuth, i. e. the LIPSS formation is oxidation free.

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“…The surface roughness and properties of nanostructures are strongly dependent on number of laser pulses applied. LIPSS structures have been also constructed on cross-linked azo-polymer films [16]. Cross-linking mechanism based on the scission of azide with formation of azo-groups was proposed and the possible relationship between this chemical modifications and the formation of ripples at the bottom of laser ablation cavities was discussed [16].…”

Section: Introductionmentioning

confidence: 99%

“…LIPSS structures have been also constructed on cross-linked azo-polymer films [16]. Cross-linking mechanism based on the scission of azide with formation of azo-groups was proposed and the possible relationship between this chemical modifications and the formation of ripples at the bottom of laser ablation cavities was discussed [16]. Laser interference lithography as an efficient technique for micro-patterning of biopolymer surface has been also proposed [17] with the possibility of regular pattern formation.…”

Section: Introductionmentioning

confidence: 99%

Periodic nanostructure induced on PEN surface by KrF laser irradiation

Slepička

Neděla

Kasálková

et al. 2017

IJNT

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There are several kinds of periodic surface structures, ranging from dots to ripples. The most common pattern is a ripple-like structure, where the direction of the ripples is parallel with the main polarisation of the laser beam. The distance between individual ripples (their period) depends on several factors, namely: the chemical structure of the polymer, wavelength of the laser irradiation and the angle of laser beam incidence. Oriented polyethylene naphthalate (PEN) foils with a thickness of 50 µm were used. The samples were irradiated with a KrF laser under laser beam incidence 0-45° to the laser beam. Selected polymer samples were also exposed by irradiation through a contact mask. Surface roughness and the dimensions of the ripple-like structures were measured by atomic force microscopy in tapping mode. The concentration of the elements on the surface was obtained from Angle Resolved X-ray Photoelectron Spectroscopy (ARXPS) spectra measured by X-ray Photoelectron Spectroscopy (XPS) spectrometer. The surface morphology and dimensions of prepared structures were evaluated and compared with those prepared on pristine samples without mask. The transition between the irradiated surface under the slits and the shielded surface in between the slits was evaluated. The optimal input parameters for nanopattern with high periodicity were determined. The shape and the surface roughness of the ripple pattern depend strongly on the angle of incidence of the laser beam. The surface roughness and ripple width increase with the angle of P. Slepička et al. laser beam incidence. Irradiation with laser leads to changes in chemical composition of the PEN surface layer. Even at initial phase of pattern formation a significant increase of carbonyl and carboxyl groups was detected.

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Nanosecond laser-induced periodic surface structuring of cross-linked azo-polymer films

Cited by 7 publications

References 29 publications

Creation of Superhydrophobic and Superhydrophilic Surfaces on ABS Employing a Nanosecond Laser

Creation of Superhydrophobic and Superhydrophilic Surfaces on ABS Employing a Nanosecond Laser

Laser-induced periodic surface structures on bismuth thin films with ns laser pulses below ablation threshold

Periodic nanostructure induced on PEN surface by KrF laser irradiation

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