Provided are: a heat-electromagnetic wave conversion structure with an optimum shape for efficient conversion of heat and electromagnetic waves; a heat-electromagnetic wave conversion member; a wavelength selective heat dissipation device; a wavelength selective heating device; a wavelength selective heat dissipation method; a wavelength selective heating method; and a method for manufacturing a heat-electromagnetic wave conversion structure. The heat-electromagnetic wave conversion structure is a structure for mutually converting heat and electromagnetic waves of a predetermined wavelength λ, and comprises a waveguide configured from a core portion 2 which transmits the electromagnetic waves and a clad portion 3 made of metal and enclosing the core portion 2. The heat-electromagnetic wave conversion member 10 includes an arrangement of a plurality of said heat-electromagnetic wave conversion structures. The heat-electromagnetic wave conversion structure and the heat-electromagnetic wave conversion member 10 are utilized in the wavelength selective heat dissipation device, the wavelength selective heating device, the wavelength selective heat dissipation method, the wavelength selective heating method, and the method for manufacturing a heat-electromagnetic wave conversion structure.
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