Effect of asymmetric hexagonal nanoantenna on local heat increase

When metal nanoparticles are exposed to electromagnetic waves, they generate heat due to the interaction of surface conduction electrons of nanoparticles and their fluctuations, as well as the Joule heating effect. The emerging science of investigating heat produced by nanoparticles is called thermoplasmonics. The heat generated is remotely controlled by light. This generated heat increases the temperature in nanoparticles and the environment. Thermoplasmonics has many applications in various fields such as physics, chemistry, and medicine, and measuring the produced heat is complicated. This article studies the practical method of increasing the local electric field and producing heat by nanoparticles. Placing asymmetric hexagonal nanoparticles as an antenna or amplifier around a rectangular nanoparticle increases the light interaction with the middle nanoparticle. It causes an increase in the local electric field and generated heat by the middle nanoparticle.