Femtosecond Laser Ablation Of Gold Interdigitated Electrodes For Electronic Tongues

dc.creatorManzoli A.
dc.creatorDe Almeida G.F.B.
dc.creatorFilho J.A.
dc.creatorMattoso L.H.C.
dc.creatorRiul A.
dc.creatorMendonca C.R.
dc.creatorCorrea D.S.
dc.date2015
dc.date2015-06-25T12:55:43Z
dc.date2015-11-26T15:20:27Z
dc.date2015-06-25T12:55:43Z
dc.date2015-11-26T15:20:27Z
dc.date.accessioned2018-03-28T22:29:57Z
dc.date.available2018-03-28T22:29:57Z
dc.identifier
dc.identifierOptics And Laser Technology. Elsevier Ltd, v. 69, n. , p. 148 - 153, 2015.
dc.identifier303992
dc.identifier10.1016/j.optlastec.2014.12.026
dc.identifierhttp://www.scopus.com/inward/record.url?eid=2-s2.0-84921415955&partnerID=40&md5=5c6a56afbc9f9fcda241b26b1791a092
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/85639
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/85639
dc.identifier2-s2.0-84921415955
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1259987
dc.descriptionElectronic tongue (e-tongue) sensors based on impedance spectroscopy have emerged as a potential technology to evaluate the quality and chemical composition of food, beverages, and pharmaceuticals. E-tongues usually employ transducers based on metal interdigitated electrodes (IDEs) coated with a thin layer of an active material, which is capable of interacting chemically with several types of analytes. IDEs are usually produced by photolithographic methods, which are time-consuming and costly, therefore, new fabrication technologies are required to make it more affordable. Here, we employed femtosecond laser ablation with pulse duration of 50 fs to microfabricate gold IDEs having finger width from 2.3 μm up to 3.2 μm. The parameters used in the laser ablation technique, such as light intensity, scan speed and beam spot size have been optimized to achieve uniform IDEs, which were characterized by optical and scanning electron microscopy. The electrical properties of gold IDEs fabricated by laser ablation were evaluated by impedance spectroscopy, and compared to those produced by conventional photolithography. The results show that femtosecond laser ablation is a promising alternative to conventional photolithography for fabricating metal IDEs for e-tongue systems.
dc.description69
dc.description
dc.description148
dc.description153
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dc.languageen
dc.publisherElsevier Ltd
dc.relationOptics and Laser Technology
dc.rightsfechado
dc.sourceScopus
dc.titleFemtosecond Laser Ablation Of Gold Interdigitated Electrodes For Electronic Tongues
dc.typeArtículos de revistas


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