Filtros digitais por transformadas de Fourier aplicados em eletroquímica Digital filters based on Fourier transforms for application in electrochemistry

Filtros digitais por transformadas de Fourier aplicados em eletroquímica Digital filters based on Fourier transforms for application in electrochemistry

<abstract language="eng">The electrochemical properties of micro and nano-electrodes are widely investigated due to their low faradaic and capacitive currents, leading to a new generation of smart and implantable devices. However, the current signals obtained in low-dimensional devic...

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Bibliographic Details
Main Authors: Ricardo Nantes Liang, Wagner Diego Gonçalves, Marccus Victor Almeida Martins, Frank Nelson Crespilho
Format: Article
Language:English
Published: Sociedade Brasileira de Química 2013-01-01
Series:Química Nova
Subjects:
microelectrodes
noise
digital filters
Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422013000100027
Description
Summary:<abstract language="eng">The electrochemical properties of micro and nano-electrodes are widely investigated due to their low faradaic and capacitive currents, leading to a new generation of smart and implantable devices. However, the current signals obtained in low-dimensional devices are strongly influenced by noise sources. In this paper, we show the evaluation of filters based on Fast Fourier Transform (FFT) and their implementation in a graphical user interface (GUI) in MATLAB®. As a case study, we evaluated an electrochemical reaction process of charge transfer via outer-sphere. Results showed successful removal of most of the noise in signals, thus proving a promising tool for low-scale measurement.
ISSN:0100-4042
1678-7064

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