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Título
Spontaneous micro-modification of single-layer graphene induced by femtosecond laser irradiation
Autor(es)
Materia
Chemical compounds
Raman spectroscopy
Graphene lasers Infrared lasers
Crystal structure
Microscopy
Laser ablation
Chemical elements
2D materials
Optical properties
Femtosecond laser irradiation
Fecha de publicación
2017-12
Citación
Chen Cheng, Ruiyun He, Carolina Romero, Javier R. Vázquez de Aldana, and Feng Chen , "Spontaneous micro-modification of single-layer graphene induced by femtosecond laser irradiation", Applied Physics Letters 111, 241901 (2017) https://doi.org/10.1063/1.4997343
Resumen
Permanent micro-modifications in single-layer graphene with a spontaneous periodic structural change have been induced by femtosecond (fs) laser irradiation. These modifications present a regular variation along the radial direction from a central ablated region. Based on the obtained micro-Raman spectrum and the reflective micro-spectrum of laser-irradiated graphene, structural modification with periodic variations containing several spectral regimes has been observed, which was in good agreement with periodic topography of the structure observed using an atomic force microscope. It has also been found that several regions of the laser induced structures were with different optical properties, which were identified to be correlated with different modification mechanisms. In addition, after fs laser processing, graphene still maintains crystallinity. This work may be helpful for the development of graphene-based microstructures or devices by fs laser pulses
URI
ISSN
0003-6951
DOI
10.1063/1.4997343
Colecciones
- ALF. Artículos [297]
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