Direct femtosecond laser printing of silk fibroin periodic structure with lower mid-infrared reflectivity

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Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorCouto, Filipe A.-
Autor(es): dc.creatorPaula, Kelly T.-
Autor(es): dc.creatorSantos, Moliria V.-
Autor(es): dc.creatorRibeiro, Sidney J.L.-
Autor(es): dc.creatorMendonça, Cleber R.-
Data de aceite: dc.date.accessioned2025-08-21T15:56:28Z-
Data de disponibilização: dc.date.available2025-08-21T15:56:28Z-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2022-12-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.optmat.2022.113335-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/249551-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/249551-
Descrição: dc.descriptionPeriodic 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.-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionSão Carlos Institute of Physics University of São Paulo, PO Box 369, SP-
Descrição: dc.descriptionInstitute of Chemistry São Paulo State University (UNESP), SP-
Descrição: dc.descriptionInstitute of Chemistry São Paulo State University (UNESP), SP-
Descrição: dc.descriptionFAPESP: 2018/11283–7-
Descrição: dc.descriptionFAPESP: 2020/08715–2-
Idioma: dc.languageen-
Relação: dc.relationOptical Materials-
???dc.source???: dc.sourceScopus-
Título: dc.titleDirect femtosecond laser printing of silk fibroin periodic structure with lower mid-infrared reflectivity-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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