Filtros digitais por transformadas de Fourier aplicados em eletroquímica

Química Nova

Ricardo Nantes Liang²  Wagner Diego Gonçalves²  Marccus Victor Almeida Martins²  Frank Nelson Crespilho¹ 

[1],Universidade Federal do ABC Centro de Ciências Naturais e Humanas Santo André SP ,Brasil

关键词: microelectrodes;    noise;    digital filters;   

DOI  :  10.1590/S0100-40422013000100027

来源: SciELO

【 摘 要 】

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.

【 授权许可】

CC BY-NC   
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