 This research paper examined the effect of various parameters on the heating efficiency of gold nanorod formulations used in photothermal cancer therapy, PTT. The authors found that the lowest concentration tested, 24 MuG slash ML, showed the best results with a specific absorption rate, SAR, of 24.6 kilowatts per G O, one for the highest laser power, 0.8 W, spot area, 0.4 square centimeters, and total volume, 1 milliliter. They also determined that the laser output power and concentration were the two most important factors in achieving optimal heating. Additionally, they noted that the cuvette's optical path length was important as well, above a certain concentration, further increases in concentration did not result in any additional improvements in heating. Finally, they concluded that this research could help optimize the performance of low nanoparticle concentrations in PTT. This article was authored by Sarah C. Freitas, Joao H. Bellow, Andreia Grania, and others.