Enhanced terahertz sensitivity for glucose detection with a hydrogel platform embedded with Au nanoparticles
Zhao, Jingjing (Shenzhen University)
Lu, Shaohua (Shenzhen University)
Bastos Arrieta, Julio (Universitat de Barcelona)
Palet i Ballús, Cristina (Universitat Autònoma de Barcelona. Departament de Química)
Sun, Yiling (Shenzhen University)
Wang, Renheng (Shenzhen University)
Qian, Zhengfang (Shenzhen University)
Fan, Shuting (Shenzhen University)

Data:	2022
Resum:	We presented a strategy for enhancing the sensitivity of terahertz glucose sensing with a hydrogel platform pre-embedded with Au nanoparticles. Physiological-level glucose solutions ranging from 0 to 0. 8 mg/mL were measured and the extracted absorption coefficients can be clearly distinguished compared to traditional terahertz time domain spectroscopy performed directly on aqueous solutions. Further, Isotherm models were applied to successfully describe the relationship between the absorption coefficient and the glucose concentration (R2 = 0. 9977). Finally, the origin of the sensitivity enhancement was investigated and verified to be the pH change induced by the catalysis of Au nanoparticles to glucose oxidation.
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Publicat a:	Biomedical Optics Express, Vol. 13, Issue 7 (July 2022) , p. 4021-4031, ISSN 2156-7085

DOI: 10.1364/BOE.461414
PMID: 35991910

11 p, 3.5 MB

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