Abstract
In this paper, we present a compact, field-portable smartphone chiralmolecule concentration estimation system based on the principleof multi-sensor computational polarimetry. The presented systemwas designed as an attachment for a smartphone, thus leveragingthe computational power to achieve full autonomy and smallform factor, while greatly reducing the cost of the system. In addition,by leveraging Maul’s Law, the size and complexity of thepresented system can be greatly reduced, consisting of just fourstatic components: i) a diode laser source, ii) a linear polariser, iii)a cell for chiral solution, and iv) a linear analyser. Finally, the highmegapixel count of the smartphone camera is leveraged via multisensorcomputational polarimetry, where a multitude of measurementsby different sensors are made in a single acquisition to enhancethe estimation of the angle of linear polarisation, and therebyenhance the estimation of the concentration of chiral molecules insolution. Such a system can have potential for enabling low-cost,mobile chiral molecule concentration analysis, which would be wellsuitedfor a wide range of industrial and clinical applications wherefield testing or on-site testing is required.
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