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Optical Detection of E. coli Bacteria by Mesoporous Silicon Biosensors
Published on: November 20, 2013
Use of hafnium(IV) oxide in biosensors
Luis Carlos Ortiz-Dosal1, Gabriela Ángeles-Robles2, Eleazar Samuel Kolosovas-Machuca3
1a Doctorado Institucional en Ingeniería y Ciencia de Materiales (DICIM-UASLP) , Universidad Autónoma de San Luis Potosí , San Luis Potosí , México.
Abstract:
Hafnium(IV) oxide is a material with properties that can increase the sensitivity, durability, and reliability of biosensors made from silicon dioxide and other semiconductor materials due to its high dielectric constant, thermodynamic stability, and the simplicity with which it can be deposited. This work describes the use of this material in biosensors based on field-effect transistors to detect ions and DNA, in immunosensors to detect an antigen-antibody complex, its use as a contrast material in computed tomography scans and the possibility of using it in optic biosensors in the infrared region. Its low cost and versatility in the field of biosensors is underscored.
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