Understanding and manipulating emittance at the nanoscale is crucial for several applications such as thermal management, photovoltaics, and optoelectronics. For instance, in thermal management, materials with high emittance can efficiently dissipate heat, while those with low emittance can retain heat. In photovoltaics, the emittance properties of nanomaterials can influence the efficiency of solar cells by affecting how they absorb and emit light.
