Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/88382
Título: | Molecular characterization and DNA-sensing using Graphene electrochemical devices under illumination |
Autor(es): | Alpuim, P. Pinzón, Edgar Lopes, Laís C. Domingues, Telma Borme, Jérôme Godoy, Erika Raposo, M. Manuela M. Bueno, Paulo R. |
Palavras-chave: | Surface impedance Electric potential Electrochemical devices Graphene Lighting Quantum capacitance Signal resolution |
Data: | 2023 |
Editora: | IEEE |
Citação: | P. Alpuim et al., "Molecular Characterization and DNA-sensing using Graphene Electrochemical Devices under Illumination," 2023 IEEE Nanotechnology Materials and Devices Conference (NMDC), Paestum, Italy, 2023, pp. 571-572, doi: 10.1109/NMDC57951.2023.10344074 |
Resumo(s): | In the AC-electrochemical mode, the signal of quantum capacitance (Cq) of individual graphene channels was resolved as a function of a superimposed DC bias potential through electrochemical impedance spectroscopy (EIS). This capacitive response was used to study the electronic states of push-pull molecules immobilized on the graphene surface in the dark and under visible illumination in the 400 to 580 nm range. The same technique will be further used in the molecular detection of target DNA by functionalizing the graphene surface with complementary probe-DNA and monitoring the Cq-minimum (Dirac point) changes for different target-DNA concentrations in the dark and under visible illumination. |
Tipo: | Artigo em ata de conferência |
URI: | https://hdl.handle.net/1822/88382 |
ISBN: | 979-8-3503-3547-7 |
e-ISBN: | 979-8-3503-3546-0 |
DOI: | 10.1109/NMDC57951.2023.10344074 |
Versão da editora: | https://ieeexplore.ieee.org/document/10344074 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CDQuim - Comunicações e Proceedings |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Molecular_Characterization_and_DNA-sensing_using_Graphene_Electrochemical_Devices_under_Illumination.pdf | 362,67 kB | Adobe PDF | Ver/Abrir |