AUTHOR=Feng Silu , Ji Weiwei 

TITLE=Advanced Nanoporous Anodic Alumina-Based Optical Sensors for Biomedical Applications

JOURNAL=Frontiers in Nanotechnology

VOLUME=3

YEAR=2021

URL=https://www.frontiersin.org/journals/nanotechnology/articles/10.3389/fnano.2021.678275

DOI=10.3389/fnano.2021.678275

ISSN=2673-3013

ABSTRACT=<p>Close-packed hexagonal array nanopores are widely used both in research and industry. A self-ordered nanoporous structure makes anodic aluminum oxide (AAO) one of the most popular nanomaterials. This paper describes the main formation mechanisms for AAO, the AAO fabrication process, and optical sensor applications. The paper is focused on four types of AAO-based optical biosensor technology: surface-Enhanced Raman Scattering (SERS), surface Plasmon Resonance (SPR), reflectometric Interference Spectroscopy (RIfS), and photoluminescence Spectroscopy (PL). AAO-based optical biosensors feature very good selectivity, specificity, and reusability.</p>