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Holographic Sensors

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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 λpeak ≈ 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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Titel: Holographic Sensors
Autoren/Herausgeber: Ali Kemal Yetisen
Aus der Reihe: Springer Theses
Ausgabe: Softcover reprint of the original 1st ed. 2015

ISBN/EAN: 9783319367224

Seitenzahl: 162
Format: 23,5 x 15,5 cm
Produktform: Taschenbuch/Softcover
Gewicht: 285 g
Sprache: Englisch

Ali Yetisen received his B.Sc. degree in Mechanical Engineering from the University of Arizona in 2010, and his Ph.D. in Biotechnology from the University of Cambridge in 2014. His research interests are nanotechnology, nanoparticles, diagnostics, biomaterials and drug delivery. He has taught entrepreneurship and commercialization courses at the Judge Business School in Cambridge. Ali has published 25 journal articles and has a patent licenced to Hoffmann-La Roche. He has been the recipient of The Ann & Norman Hilberry Scholarship, Roche Continents Award, and Cambridge Infectious Diseases Fellowship. Currently, Ali serves as a reviewer for 20 journals in nanotechnology.

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