Direct femtosecond laser printing of silk fibroin periodic structure with lower mid-infrared reflectivity
dc.contributor.author | Couto, Filipe A. | |
dc.contributor.author | Paula, Kelly T. | |
dc.contributor.author | Santos, Moliria V. | |
dc.contributor.author | Ribeiro, Sidney J.L. [UNESP] | |
dc.contributor.author | Mendonça, Cleber R. | |
dc.contributor.institution | Universidade de São Paulo (USP) | |
dc.contributor.institution | Universidade Estadual Paulista (UNESP) | |
dc.date.accessioned | 2023-07-29T16:02:50Z | |
dc.date.available | 2023-07-29T16:02:50Z | |
dc.date.issued | 2023-01-01 | |
dc.description.abstract | Periodic dielectric structures offer an efficient way to control light propagation at micro- and nanoscale, also presenting low losses. Among many techniques that can produce such structures, femtosecond Laser-Induced Forward Transfer (fs-LIFT) is a promising one due to its relatively simple implementation and ability to process broad classes of materials, preserving their integrity. In particular, Silk fibroin (SF), a natural biopolymer, can be processed by fs-LIFT to print well-ordered periodic arrays of microstructures. Due to its high transparency, biocompatibility, and high possibilities of functionalization, SF is a suitable material for photonics. In this work, a 2D lattice of hemi-elliptical SF microdroplets was fabricated via fs-LIFT, and finite-element (FEM) simulations were carried out to study their response to electromagnetic radiation in the near to mid-infrared spectral region, considering the influence of the substrate. The simulation results indicated a decrease in reflectivity which was corroborated with experimental results. In addition, coating the fabricated structures with a higher index dielectric material was shown to enhance the decrease in reflectivity in the mid-infrared spectral region. These results demonstrate a straightforward way to print ordered arrays of SF microstructures in a relatively large area, with potential application as controllable reflectivity coating for the near to mid-infrared spectral region. | en |
dc.description.affiliation | São Carlos Institute of Physics University of São Paulo, PO Box 369, SP | |
dc.description.affiliation | Institute of Chemistry São Paulo State University (UNESP), SP | |
dc.description.affiliationUnesp | Institute of Chemistry São Paulo State University (UNESP), SP | |
dc.description.sponsorship | Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) | |
dc.description.sponsorship | Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) | |
dc.description.sponsorship | Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) | |
dc.description.sponsorshipId | FAPESP: 2018/11283–7 | |
dc.description.sponsorshipId | FAPESP: 2020/08715–2 | |
dc.identifier | http://dx.doi.org/10.1016/j.optmat.2022.113335 | |
dc.identifier.citation | Optical Materials, v. 135. | |
dc.identifier.doi | 10.1016/j.optmat.2022.113335 | |
dc.identifier.issn | 0925-3467 | |
dc.identifier.scopus | 2-s2.0-85146221308 | |
dc.identifier.uri | http://hdl.handle.net/11449/249551 | |
dc.language.iso | eng | |
dc.relation.ispartof | Optical Materials | |
dc.source | Scopus | |
dc.title | Direct femtosecond laser printing of silk fibroin periodic structure with lower mid-infrared reflectivity | en |
dc.type | Artigo | |
unesp.author.orcid | 0000-0002-4779-0068[1] | |
unesp.author.orcid | 0000-0002-8162-6747[4] |