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. Author manuscript; available in PMC: 2018 Mar 14.
Published in final edited form as: Lab Chip. 2017 Mar 14;17(6):1051–1059. doi: 10.1039/c6lc01167e

Figure 2.

Figure 2

Head-on view of the smartphone attachment on a phone with a cutaway to reveal the internal components and illustrate the time-gated imaging of an LFA strip (A) Left: phone’s rear camera flash turned on for photoexcitation of phosphors. Right: image of the result window during excitation by phone’s flash (B) Left: phone’s flash turned off for luminescence imaging. Right: image of luminescence from anti-hCG persistent nanophosphors bound at the test line and control line of the strip at an hCG concentration of 0.12 ng/mL hCG (scale bar = 1 mm).