Direct Femtosecond Laser Printing of Silk Fibroin Microstructures

Autor(es)

Santos, V, Moliria ; Paula, Kelly T. ^[1] ; de Andrade, Marcelo B. ^[1] ; Gomes, Emmanuel M. ^[2] ; Marques, Lippy F. ^[2] ; Ribeiro, Sidney J. L. ^[3] ; Mendonca, Cleber R. ^[1]

Afiliação do(s) autor(es)

^[1] Santos, Moliria, V, Univ Sao Paulo, Sao Carlos Inst Phys, BR-13560970 Sao Carlos, SP - Brazil

^[2] Univ Estado Rio De Janeiro, Inst Chem, Grp Mat Inorgan Multifuncionais, BR-20550013 Rio De Janeiro, RJ - Brazil

^[3] Sao Paulo State Univ, Inst Chem, UNESP, BR-14801970 Araraquara, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: ACS APPLIED MATERIALS & INTERFACES; v. 12, n. 44, p. 50033-50038, NOV 4 2020.
• Citações Web of Science: 0

Resumo

Fabrication of functional silk fibroin microstructures has extensive applications in biotechnology and photonics. Considerable progress has been made based on lithographic methods and self-assembly approaches. However, most methods require chemical modification of silk fibroin, which restricts the functionalities of the designed materials. At the same time, femtosecond laser-induced forward transfer (fs-LIFT) has been explored as a simple and attractive processing tool for microprinting of high-resolution structures. In this paper, we propose the use of LIFT with fs-pulses for creating high-resolution structures of regenerated silk fibroin (SF). Furthermore, upon adding Eu3+/Tb3+ complexes to SF, we have been able to demonstrate the printing by LIFT of luminescent SF structures with a resolution on the order of 2 mu m and without material degradation. This approach provides a facile method for printing well-defined two-dimensional (2D) micropatterns of pure and functionalized SF, which can be used in a wide range of optical and biomedical applications. (AU)

• Processo FAPESP: 16/11591-8 - Microestruturação com lasers de femtossegundos em biopolímeros de celulose e fibroína: fabricação de dispositivos fotônicos
• Beneficiário: Moliria Vieira dos Santos
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 18/11283-7 - Fotônica não linear: espectroscopia e processamento avançado de materiais
• Beneficiário: Cleber Renato Mendonça
• Modalidade de apoio: Auxílio à Pesquisa - Temático