A Low-Cost Portable Nanophotonic Sensor Based on a Smartphone : A system readily available for many applications

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Original languageEnglish
Pages (from-to)6-12
Journal / PublicationIEEE Nanotechnology Magazine
Issue number3
Online published11 Apr 2019
Publication statusPublished - Jun 2019


WE PRESENT THE DEVELOPMENT of a new low-cost and portable nanophotonic sensor to measure mechanical or environmental quantities, such as acoustic, bending, stretching, or temperature changes (see Figure 1). The sensor consists of a compact diode laser, a multimode fiber, and a smartphone, and thus, it is quite portable. The laser light emitted from the multimode fiber forms optical speckle patterns on a screen. We experimentally implement the bending sensing on a smartphone. The relationship between the bending curvature and the optical speckle pattern is quantitatively studied, demonstrating its feasibility of bending sensing.