Glucose Detection Using Fluorine Doped Tin Oxide Extended Gate Field Effect Transistors Upon Varied Functionalizations of Glucose Oxidase

2022 ◽  
Author(s):  
Gonzalo Eduardo Fenoy ◽  
Waldemar Alejandro Marmisollé ◽  
Wolfgang Knoll ◽  
Omar Azzaroni

We introduce a new approach for glucose oxidase (GOx) immobilization on graphene field-effect transistors (gFETs) to fabricate highly sensitive glucose sensors. The strategy relies on the electropolymerization of a layer...


2021 ◽  
Vol 21 (5) ◽  
pp. 3059-3064
Author(s):  
A. K. M. Kafi ◽  
Aizam Bin Kasri ◽  
Rajan Jose

The fabrication of a network of glucose oxidase-horseradish peroxidase/tin oxide (GOx-HRP/SnO2), immobilized onto a glassy carbon electrode (GCE) and its utilization as a biosensor for glucose detection is reported. The network established with GOx-HRP/SnO2 possess high sensitivity and stability by performing the electrocatalytic features in the sensing of glucose. The turbidity of fabrication had been scanned and analyzed using UV-vis spectroscopy. The morphology and composition of the fabricated GOx-HRP/SnO2 networks were characterized by scanning electron microscopy (SEM). Cyclic voltammetry and amperometry were employed to study the electrochemical properties of the proposed biosensor. The effect of applied electrode potential and pH were systemically investigated. The biosensor responds to glucose at work potential values between −400 mV, and exhibited a lower detection limit (0.025 mM) and long linear range (0.25 to 7.0 mM), and was resistant to common interferences.


2005 ◽  
Vol 87 (19) ◽  
pp. 193503 ◽  
Author(s):  
W. B. Jackson ◽  
R. L. Hoffman ◽  
G. S. Herman

2019 ◽  
Vol 19 (11) ◽  
pp. 7442-7446 ◽  
Author(s):  
Salma Siddique ◽  
Hamid Mukhtar

Graphene due to its unique properties of biocompatibility has received considerable attention for biosensing applications. Here, we report the effect of glucose oxidase treatment on the graphene devices. Raman spectroscopy and the electrical transport measurements are performed to study the graphene intrinsic characteristics before glucose oxidase treatment. The absence of the defect peak in the Raman spectrum shows high-quality graphene. The modulation in the electrical properties is further investigated by different period of glucose oxidase treatment. Our results illustrate that the mobility of the graphene-based field effect transistor is gradually enhanced with the glucose oxidase treatment time. The enhancement in the electrical performance of graphene FET with the biomolecules could be the suitable route for the bioelectronic devices.


2017 ◽  
Vol 22 (1) ◽  
pp. 61-67 ◽  
Author(s):  
M. Fathollahzadeh ◽  
M. Hosseini ◽  
M. Norouzi ◽  
A. Ebrahimi ◽  
M. Fathipour ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document