| Téléchargement | - Voir la version finale : Surface adhesion of back-illuminated ultrafast laser-treated polymers (PDF, 1.3 Mio)
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| DOI | Trouver le DOI : https://doi.org/10.1103/PhysRevMaterials.5.045201 |
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| Auteur | Rechercher : Kallepalli, Deepak L. N.1Identifiant ORCID : https://orcid.org/0000-0002-2802-7390; Rechercher : Godfrey, Alan T. K.1; Rechercher : Ratté, Jesse1Identifiant ORCID : https://orcid.org/0000-0002-1651-0115; Rechercher : Staudte, André1; Rechercher : Zhang, Chunmei1; Rechercher : Corkum, P. B.1Identifiant ORCID : https://orcid.org/0000-0003-3394-5572 |
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| Affiliation | - Conseil national de recherches du Canada. Technologies de sécurité et de rupture
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| Format | Texte, Article |
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| Résumé | We report a decreased surface wettability when polymer films on a glass substrate are treated by ultrafast laser pulses in a back-illumination geometry. We propose that back illumination through the substrate confines chemical changes beneath the surface of polymer films, leaving the surface blistered but chemically intact. To confirm this hypothesis, we measure the phase contrast of the polymer when imaged with a focused ion beam. We observe a void at the polymer-quartz interface that results from the expansion of an ultrafast laser-induced plasma. A modified polymer layer surrounds the void, but otherwise the film seems unmodified. We also use x-ray photoelectron spectroscopy to confirm that there is no chemical change to the surface. When patterned with partially overlapping blisters, our polymer surface shows increased hydrophobicity. The increased hydrophobicity of back-illuminated surfaces can only result from the morphological change. This contrasts with the combined chemical and morphological changes of the polymer surface caused by a front-illumination geometry. |
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| Date de publication | 2021-04-28 |
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| Maison d’édition | American Physical Society |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 572f4ca2-497a-465d-9622-78318f87b38a |
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| Enregistrement créé | 2022-01-10 |
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| Enregistrement modifié | 2022-04-05 |
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