About the Authors
- Luciano Miranda
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Affiliation Departamento de Física, Universidade Federal Rural de Pernambuco, Recife-PE, Brazil
- Adauto J. F. de Souza
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Affiliation Departamento de Física, Universidade Federal Rural de Pernambuco, Recife-PE, Brazil
- Fernando F. Ferreira
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Affiliation GRIFE – Escola de Artes, Ciências e Humanidades, Universidade de São Paulo, São Paulo, Brazil
- Paulo R. A. Campos
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* E-mail: prac@df.ufpe.br
Affiliation Departamento de Física, Universidade Federal de Pernambuco, Recife-PE, Brazil
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Conceived and designed the experiments: PC LM AS FF. Performed the experiments: PC LM AS FF. Analyzed the data: PC LM AS FF. Contributed reagents/materials/analysis tools: PC LM AS FF. Wrote the paper: PC LM AS FF.