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Laser-induced periodic surface structures nanofabricated on poly(trimethylene terephthalate) spin-coated films.

Martín-Fabiani, I, Rebollar, E, Pérez, S, Rueda, DR, García-Gutiérrez, MC, Szymczyk, A, Roslaniec, Z, Castillejo, M and Ezquerra, TA (2012) Laser-induced periodic surface structures nanofabricated on poly(trimethylene terephthalate) spin-coated films. Langmuir, 28 (20). pp. 7938-7945.

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Abstract

Here we present a precise morphological description of laser-induced periodic surface structures (LIPSS) nanofabricated on spin-coated poly(trimethylene terephthalate) (PTT) films by irradiation with 266 nm, 6 ns laser pulses and by using a broad range of fluences and number of pulses. By accomplishing real and reciprocal space measurements by means of atomic force microscopy and grazing incidence wide- and small-angle X-ray scattering respectively on LIPSS samples, the range of optimum structural order has been established. For a given fluence, an increase in the number of pulses tends to improve LIPSS in PTT. However, as the pulse doses increase above a certain limit, a distortion of the structures is observed and a droplet-like morphology appears. It is proposed that this effect could be related to a plausible decrease of the molecular weight of PTT due to laser-induced chain photo-oxidation by irradiation with a high number of pulses. A concurrent decrease in viscosity enables destabilization of LIPSS by the formation of droplets in a process similar to surface-limited dewetting.

Item Type: Article
Authors :
NameEmailORCID
Martín-Fabiani, IUNSPECIFIEDUNSPECIFIED
Rebollar, EUNSPECIFIEDUNSPECIFIED
Pérez, SUNSPECIFIEDUNSPECIFIED
Rueda, DRUNSPECIFIEDUNSPECIFIED
García-Gutiérrez, MCUNSPECIFIEDUNSPECIFIED
Szymczyk, AUNSPECIFIEDUNSPECIFIED
Roslaniec, ZUNSPECIFIEDUNSPECIFIED
Castillejo, MUNSPECIFIEDUNSPECIFIED
Ezquerra, TAUNSPECIFIEDUNSPECIFIED
Date : 22 May 2012
Identification Number : 10.1021/la300833x
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 13:19
Last Modified : 17 May 2017 13:19
URI: http://epubs.surrey.ac.uk/id/eprint/838747

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