Fig. 2.

A The NIR thermal images of nano-LAMP mixture recorded by infrared camera during a 808-nm laser irradiation. (B) NIR thermal images of droplets containing MNPs at 40 μg/μL, and ultrapure water droplet with laser off (B) and laser on (C). (D) Thermal imager recording of 25 min of temperature change. (E) Photothermal conversion curves of different concentrations (n = 3) and different powers (F) (n = 3). (G) Thermal images of different samples recorded by infrared camera during 808-nm laser irradiation. (H) Photothermal transformation curve of five cycles