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This research was funded by the National Agency for Research and Development (ANID) through the Project Subvenci on a la Instalaci on en la Academia convocatoria 2022 N degrees 85220101 (R.V.) , and the Millen- nium Institute on Green Ammonia as Energy Vector MIGA, ANID/Mil- lennium Science Initiative Program/ICN2021_023 (S.A.H.) . The authors also thank ANID for FONDECYT grant 1201589 (S.A.H.) , and FONDE- QUIP grants EQM140142 and EQM150101. E.C.A. acknowledges the financial support from MCIN with funding from NextGenerationEU (PRTR-C17.I1) and Generalitat de Catalunya. ICN2 is supported by the Severo Ochoa program from the Spanish Research Agency (AEI, grant no. SEV-2017-0706) and by the CERCA Programme/Generalitat de Catalunya.

Analysis of institutional authors

Garcia-Merino, J AAuthor

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Article

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

Publicated to:OPTICS AND LASER TECHNOLOGY. 178 111255- - 2024-06-04 178(), DOI: 10.1016/j.optlastec.2024.111255

Authors: Garcia-Merino, J A; Villarroel, R; Chavez-Angel, E; Hevia, S A

Affiliations

Barcelona Inst Sci & Technol BIST, Campus UAB, Barcelona 08193, Spain - Author
CSIC, Catalan Inst Nanosci & Nanotechnol, Campus UAB, Barcelona 08193, Spain - Author
Ctr Invest Nanotecnol & Mat Avanzados CIEN UC, Av Vicuna Mackenna 4860, Santiago 6904411, Chile - Author
Pontificia Univ Catolica Chile, Inst Fis, Av Vicuna Mackenna 4860, Santiago 6904411, Chile - Author
Pontificia Univ Catolica Chile, Millennium Inst Green Ammonia Energy Vector MIGA, Av Vicuna Mackenna 4860, Santiago 6904411, Chile - Author
Univ Tecnol Metropolitana, Fac Ciencias Nat Matemat & Medio Ambiente, Dept Fis, Las Palmeras 3360, Santiago 7800003, Chile - Author
Univ Tecnol Metropolitana, Fac Ingn, Dept Mecan, Av Jose Pedro Alessandri 1242, Santiago 7800003, Chile - Author
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Abstract

Carbon 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.

Keywords

CntIrradiationLaser ablationNanostructuresPerformancePhoto-thermionic emissionPhotothermal propertiesPlasma emissioRaman spectroscopyVacuu

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal OPTICS AND LASER TECHNOLOGY due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2024 there are still no calculated indicators, but in 2023, it was in position 45/179, thus managing to position itself as a Q1 (Primer Cuartil), in the category Physics, Applied.

Independientemente del impacto esperado determinado por el canal de difusión, es importante destacar el impacto real observado de la propia aportación.

Según las diferentes agencias de indexación, el número de citas acumuladas por esta publicación hasta la fecha 2025-06-28:

  • Scopus: 6

Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-06-28:

  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 6 (PlumX).

Leadership analysis of institutional authors

This work has been carried out with international collaboration, specifically with researchers from: Chile.

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: First Author (GARCIA MERINO, JUAN ANTONIO) .