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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.)

Single-step printing of metallic nanoparticles in 2D micropatterns

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Author(s):
Ferreira, Paulina R. [1] ; Correr, Wagner [1, 2] ; Mendonca, Cleber R. [1] ; Almeida, Juliana M. P. [1, 3]
Total Authors: 4
Affiliation:
[1] Univ Sao Paulo, Sao Carlos Inst Phys, POB 369, BR-13560970 Sao Carlos, SP - Brazil
[2] Univ Laval, Ctr Opt Photon & Laser, 2375 Rue Terrasse, Quebec City, PQ G1V 0A6 - Canada
[3] Univ Sao Paulo, Sao Carlos Sch Engn, Dept Mat Engn, Av Joao Dagnone 1100, BR-13563120 Sao Carlos, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: JOURNAL OF NANOPARTICLE RESEARCH; v. 22, n. 9 AUG 28 2020.
Web of Science Citations: 0
Abstract

This work demonstrates a single-step method for synthesis and printing of metallic nanoparticles (NPs) in 2D micropatterns. The method is based on femtosecond laser writing, enabling fast and high precision deposition of silver, gold, or copper NPs in space-selective areas, which in general is not achieved by the traditional chemical routes or laser ablation of metal. Such finds were accomplished by employing laser-induced forward transfer in the femtosecond pulse regime (fs-LIFT). The results are promising for application, since metallic NPs, with a lognormal diameter distribution averaging between similar to 4 and 30 nm, allow exploring plasmon bands throughout the visible spectrum. The mechanisms behind NP formation by fs-LIFT are discussed based on the thermomechanical response of the material. An estimative based on the heat transfer suggests the occurrence of mechanical fragmentation rather than material vaporization. The main result addressed herein, however, is the ability to deposit silver, gold, and copper nanoparticles in selected regions, supporting the development of NP-based devices via one-step processing and their application in sensors and photonic circuits. (AU)

FAPESP's process: 13/05350-0 - Fabrication of waveguide in chalcogenide glass using laser direct-write processing
Grantee:Juliana Mara Pinto de Almeida
Support Opportunities: Scholarships abroad - Research Internship - Doctorate
FAPESP's process: 18/11283-7 - Nonlinear photonics: spectroscopy and advanced processing of materials
Grantee:Cleber Renato Mendonça
Support Opportunities: Research Projects - Thematic Grants