Use of multivariate analysis on Fabry-Pérot interference spectra of nanoporous anodic alumina (NAA) for optical sensors purposes

Revisiting anodic alumina templates: from fabrication to applications

“…More recently, their performance as chemical sensing platforms was tested by Ferro et al 14 in a study that evaluates the Fabry-Perot interference spectra of AAO films as a function of glucose concentration through photoluminescence measurements, combined with other multivariate analytical data processing techniques. Determination of glucose concentration with good analytical performance was reported, following this approach.…”

“…[2][3][4][5][6][7][8][9][10][11][12][13] that allow obtaining alumina membranes with pre-designed porous structure (pore diameter, inter-pore distance, porosity, length…) to fulfill a certain application. Possessing this high degree of tunability over the porous structure at the nanoscale level allows fine control of the optical properties displayed by the alumina films that can be exploited for sensing applications [14][15][16][17][18][19][20] . Also relevant is their high surface to volume ratio (associated with the pore density) that makes them appropriate vehicles for drug delivery applications [21][22][23][24][25] .…”

Recent Advances in Nanoporous Anodic Alumina: Principles, Engineering, and Applications

“…To provide overview of many functionalities discussed in Sections 4.1-4.7, they are gathered in the Table 2. [190] Gradient-index filters [191] Distributed Bragg reflectors [192] Optical bandpass filters [193] Human protein heavy ions real-time interaction monitoring [194] Tailoring of optical properties with pulse anodization [149] Design of phase shift defect in effective refractive index [195] Hybrid distributed DBRs and apodized GIF photonic structure [196] Characterization of thermotropic ferroelectric liquid crystals confined in the NAA [197][198][199] Glass transition of discotic liquid crystals in one-dimensional fluid [200] Adjustable optical anisotropy by self-assembly of liquid crystals confined in porous structure [201] Sensors NAA template-assisted fabrication of chromium substrate for SERS detection of heavy ions in aqueous solutions [202] Au NPs array on NAA for SERS detection of hemoglobin [203] Controlled fabrication of periodic plasmonic dimer arrays for SERS [204] Graphene-NAA composite for SERS sensing [205] Label-free optical sensor based on interferometric reflectance spectroscopy for TNF-α detection [206] NAA-based interferometer for copper sensing [207] In vivo nanotubes nanotoxicity study on murine model […”

“…Propagation of light can be adjusted through a change in the geometry. The most common PC structures made this way are Fabry-Perót interferometers [ 190 ], gradient-index filters [ 191 ], distributed Bragg reflectors [ 192 ], and optical bandpass filters [ 193 ]. Their major utilization is as optical sensors.…”

Nanoporous Anodic Alumina Photonic Crystals for Optical Chemo- and Biosensing: Fundamentals, Advances, and Perspectives

“…Under specific adsorption conditions, the proposed PL sensor had a sensitivity of 0.029% mM −1 and LLoD of 5 mM for L-cysteine. Ferro et al combined NAA-FPIs with PL spectroscopy for glucose sensing, where the characteristic PL spectra of NAA-FPIs was monitored after immersion in solutions containing different concentrations of glucose [ 248 ]. A multivariate analysis was used to derive a quantitative model for glucose concentration determination and the LLoD of the sensing system was 0.01 mol L −1 .…”