Heating rates (°C/s) of 5 nm and 10 nm diameter AuNPs solutions. As per protocol instructions, heating rates are determined for AuNPs with supernatant (AuNPs+SN), AuNPs filtered out so that only the supernatant is present (SN), and the difference in heating rates between these two (difference). Average heating rates are from three different experiments (A, B, and C).