Digital filters based on Fourier transforms for application in electrochemistry

Author(s)

Ricardo Nantes Liang ^[1] ; Wagner Diego Gonçalves ^[2] ; Marccus Victor Almeida Martins ^[3] ; Frank Nelson Crespilho ^[4]

Affiliation

^[1] Universidade Federal do ABC. Centro de Ciências Naturais e Humanas - Brasil

^[2] Universidade Federal do ABC. Centro de Ciências Naturais e Humanas - Brasil

^[3] Universidade Federal do ABC. Centro de Ciências Naturais e Humanas - Brasil

^[4] Universidade de São Paulo. Instituto de Química de São Carlos - Brasil

• Document type: Journal article
• Source: Química Nova; v. 36, n. 1, p. 165-170, 2013-00-00.

Abstract

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. (AU)

• FAPESP's process: 11/01541-0 - Development of bioanodes composed by glucose oxidase and fructose dehydrogenase and its recombinant structures for aplication in prototype of biofuel cell: power generation from biomass (sugar cane)
• Grantee: Frank Nelson Crespilho
• Support Opportunities: Regular Research Grants
• FAPESP's process: 09/15558-1 - Biomolecules and cellular system interaction with nanostructures 0D, 1D and 2D by using electrochemical methods
• Grantee: Frank Nelson Crespilho
• Support Opportunities: Regular Research Grants