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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

3D Printed e-Tongue

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Autor(es):
Gaal, Gabriel [1] ; da Silva, Tatiana A. [1] ; Gaal, Vladimir [1] ; Hensel, Rafael C. [1] ; Amaral, Lucas R. [2] ; Rodrigues, Varlei [1] ; Riul, Jr., Antonio [1]
Número total de Autores: 7
Afiliação do(s) autor(es):
[1] Univ Estadual Campinas, Appl Phys Dept, Campinas, SP - Brazil
[2] Univ Estadual Campinas, Sch Agr Engn, Campinas, SP - Brazil
Número total de Afiliações: 2
Tipo de documento: Artigo Científico
Fonte: FRONTIERS IN CHEMISTRY; v. 6, MAY 3 2018.
Citações Web of Science: 5
Resumo

Nowadays, one of the biggest issues addressed to electronic sensor fabrication is the build-up of efficient electrodes as an alternative way to the expensive, complex and multistage processes required by traditional techniques. Printed electronics arises as an interesting alternative to fulfill this task due to the simplicity and speed to stamp electrodes on various surfaces. Within this context, the Fused Deposition Modeling 3D printing is an emerging, cost-effective and alternative technology to fabricate complex structures that potentiates several fields with more creative ideas and new materials for a rapid prototyping of devices. We show here the fabrication of interdigitated electrodes using a standard home-made CoreXY 3D printer using transparent and graphene-based PLA filaments. Macro 3D printed electrodes were easily assembled within 6 min with outstanding reproducibility. The electrodes were also functionalized with different nanostructured thin films via dip-coating Layer-by-Layer technique to develop a 3D printed e-tongue setup. As a proof of concept, the printed e-tongue was applied to soil analysis. A control soil sample was enriched with several macro-nutrients to the plants (N, P, K, S, Mg, and Ca) and the discrimination was done by electrical impedance spectroscopy of water solution of the soil samples. The data was analyzed by Principal Component Analysis and the 3D printed sensor distinguished clearly all enriched samples despite the complexity of the soil chemical composition. The 3D printed e-tongue successfully used in soil analysis encourages further investments in developing new sensory tools for precision agriculture and other fields exploiting the simplicity and flexibility offered by the 3D printing techniques. (AU)

Processo FAPESP: 14/03691-7 - Fabricação de dispositivos microfluídicos visando aplicações em agricultura de precisão e bioenergia
Beneficiário:Antonio Riul Júnior
Linha de fomento: Auxílio à Pesquisa - Programa BIOEN - Regular
Processo FAPESP: 15/21616-5 - Sensoriamento proximal de cana-de-açúcar: variáveis agronômicas e espectroscopia de solos
Beneficiário:Lucas Rios Do Amaral
Linha de fomento: Auxílio à Pesquisa - Programa BIOEN - Regular
Processo FAPESP: 17/06985-0 - Diferentes tecnologias de impressão 3D aplicadas em dispositivos microfluídicos e línguas eletrônicas
Beneficiário:Maria Luisa Braunger Fier
Linha de fomento: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado
Processo FAPESP: 15/14836-9 - Aplicação da tecnologia de impressão 3D para desenvolvimentos microfluídicos
Beneficiário:Maria Luisa Braunger Fier
Linha de fomento: Bolsas no Brasil - Pós-Doutorado