The Gold nanoparticles, whose color ranges from vibrant red to pale blue its size depending on which therapy they are being used for; in photothermal cancer therapy, many gold nanoparticle molecules are used in each test and they must all be uniform in size.
Gold nanoparticles range in size depending on which therapy they are being used for. In photothermal cancer therapy, many gold nanoparticle molecules are used in each test and they must all be uniform in size. Colors of AuNP solutions typically range from vibrant red to pale blue. 
