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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Direct Femtosecond Laser Printing of Silk Fibroin Microstructures

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Author(s):
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]
Total Authors: 7
Affiliation:
[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
Total Affiliations: 3
Document type: Journal article
Source: ACS APPLIED MATERIALS & INTERFACES; v. 12, n. 44, p. 50033-50038, NOV 4 2020.
Web of Science Citations: 0
Abstract

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)

FAPESP's process: 16/11591-8 - Femtosecond laser micro-structuring in biopolymers of celulose and fibroin: fabrication of photonic devices
Grantee:Moliria Vieira dos Santos
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 18/11283-7 - Nonlinear photonics: spectroscopy and advanced processing of materials
Grantee:Cleber Renato Mendonça
Support Opportunities: Research Projects - Thematic Grants