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Holographic Sensors (Paperback, Softcover reprint of the original 1st ed. 2015)
Loot Price: R3,334
Discovery Miles 33 340
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Holographic Sensors (Paperback, Softcover reprint of the original 1st ed. 2015)
Series: Springer Theses
Expected to ship within 15 - 20 working days
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This thesis presents a theoretical and experimental approach for
the rapid fabrication, optimization and testing of holographic
sensors for the quantification of pH, organic solvents, metal
cations, and glucose in solutions. Developing non-invasive and
reusable diagnostics sensors that can be easily manufactured will
support the monitoring of high-risk individuals in any clinical or
point-of-care setting. Sensor fabrication approaches outlined
include silver-halide chemistry, laser ablation and
photopolymerization. The sensors employ off-axis Bragg diffraction
gratings of ordered silver nanoparticles and localized refractive
index changes in poly (2-hydroxyethyl methacrylate) and
polyacrylamide films. The sensors exhibited reversible Bragg peak
shifts, and diffracted the spectrum of narrow-band light over the
wavelength range peak 495-1100 nm. Clinical trials of glucose
sensors in the urine samples of diabetic patients demonstrated that
they offer superior performance compared to commercial
high-throughput urinalysis devices. Lastly, a generic smartphone
application to quantify colorimetric tests was developed and tested
for both Android and iOS operating systems. The sensing platform
and smartphone application may have implications for the
development of low-cost, reusable and equipment-free point-of-care
diagnostic devices.
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