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Time constants and luminescence lifetimes of an InGaN-based white LED at different wavelengths are characterized by a novel multi-cycle charge modulation based CMOS image sensor chip. To enable high sensitivity, we propose parasitic insensitive multi-cycle charge modulation scheme for low-light lifetime extraction. The designed in-pixel CTIA-based structure is able to capture the weak luminescence-induced...
Point-of-care (POC) diagnostics integrated with smartphone platform has gained increasing attention in recent years due to its portability, cost-effectiveness and user-friendly setting. In this paper, we present an optical sensor based on a smartphone platform with extremely low-cost spectrometer accessary, which can be applied for colorimetric sensing. The spectrometer accessory enables separation...
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