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Atomic Layer Deposition of Vanadium Dioxide and a Temperature-dependent Optical Model
Published on: May 23, 2018
Ion-sensing properties of 1D vanadium pentoxide nanostructures
Nirton Cs Vieira1, Waldir Avansi, Alessandra Figueiredo
1Departamento de Física e Ciências dos Materiais, Instituto de Física de São Carlos, Universidade de São Paulo, Avenida Trabalhador São-carlense 400, São Carlos, São Paulo, CP 369/13560-970, Brazil. nirton@ursa.ifsc.usp.br.
Nanoscale Research Letters
|June 20, 2012
Summary
One-dimensional vanadium pentoxide hydrate (1D V2O5·nH2O) nanostructures demonstrate excellent pH sensing capabilities. These nanostructures offer a promising, low-cost material for advanced FET-based sensors and biosensors.
Area of Science:
- Materials Science
- Nanotechnology
- Chemical Sensing
Background:
- Vanadium pentoxide hydrate (V2O5·nH2O) nanostructures are explored for sensing applications.
- Developing effective pH sensing materials is crucial for various technological fields.
Purpose of the Study:
- To evaluate one-dimensional (1D) V2O5·nH2O nanostructures as a pH sensing material.
- To investigate the synthesis and application of V2O5·nH2O nanostructures in field-effect transistor (FET) based pH sensors.
Main Methods:
- Hydrothermal synthesis was used to create 1D V2O5·nH2O nanostructures with controlled morphologies (nanoribbons, nanowires, nanorods).
- These nanostructures were integrated as gate material in extended gate FET (EGFET) pH sensors.
- The FETs were designed to isolate the active channel from the chemical environment.
Main Results:
- The 1D V2O5·nH2O nanostructures exhibited pH sensitivity close to theoretical predictions.
- The synthesized nanostructures demonstrated suitability for use in EGFET pH sensors.
- The material showed high pH sensing properties, flexibility, and low cost.
Conclusions:
- 1D V2O5·nH2O nanostructures are effective pH sensing materials.
- Their properties make them suitable for developing advanced FET-based sensors.
- Potential applications include enzyme FET-based biosensors utilizing immobilized enzymes.
