Effect of Fluorescent Particle Size on the Modulation Efficiency of Ultrasound-Modulated Fluorescence

Figure 1

Schematic of the measurement system. FG: function generator; PA: power amplifier; UST: ultrasound transducer; FT: fluorescent tube; L1–L2: two lenses; EmF: emission filters; PMT: photomultiplier tube; TIA: transimpedance amplifier; LIA: lock-in amplifier; OS: oscilloscope. The inset represents the top view of the container and FT.