Laser ablation fingerprint in low crystalline carbon nanotubes: A structural and photothermal analysis

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dc.contributor.authorGarcia-Merino, J. A.
dc.contributor.authorVillarroel, R.
dc.contributor.authorChavez-Angel, E.
dc.contributor.authorHevia, S. A.
dc.date.accessioned2025-01-20T16:15:28Z
dc.date.available2025-01-20T16:15:28Z
dc.date.issued2024
dc.description.abstractCarbon nanotubes (CNT) hold promise as photothermal materials due to their cost-effectiveness, stability, and broad optical absorbance. Here, we investigate the structural and morphological modifications in low-crystalline vertically aligned CNT synthetized via chemical vapor deposition on n-type Si substrates at 750 degrees C, followed by annealing treatment with near-infrared laser radiation. Raman spectroscopy revealed laser-induced amorphous regions, facilitating identification of ablation thresholds. Time-dependent nonlinear photothermal emission, associated with CNT ablation, showed a stable thermodynamic equilibrium with broad-band radiation from an electron-hole plasma. We propose a model based on Raman spectra and positional scans of the ablation fingerprint, enabling correlation with the beam temperature profile. This study offers insights into laser beam characterization, with potential applications in plasma and optics disciplines.
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.optlastec.2024.111255
dc.identifier.eissn1879-2545
dc.identifier.issn0030-3992
dc.identifier.urihttps://doi.org/10.1016/j.optlastec.2024.111255
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/90496
dc.identifier.wosidWOS:001250149200001
dc.language.isoen
dc.revistaOptics and laser technology
dc.rightsacceso restringido
dc.subjectCNT
dc.subjectPhotothermal properties
dc.subjectLaser ablation
dc.subjectRaman spectroscopy
dc.subjectPlasma emission
dc.titleLaser ablation fingerprint in low crystalline carbon nanotubes: A structural and photothermal analysis
dc.typeartículo
dc.volumen178
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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