New linear sum rules bound the integrated sound absorption and transmission of passive Lorentz-resonator systems, revealing a thickness-bandwidth-absorption trade-off in deep-subwavelength absorbers.
A sum rule often takes the form of โซ ฯโn ln ๐(๐) ๐๐ โ 0 = ๐ถ, where ๐ถ is a constant
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Alternative sum rules and waterbed effects of Lorentz resonator system for sound absorption and transmission in a unidimensional waveguide
New linear sum rules bound the integrated sound absorption and transmission of passive Lorentz-resonator systems, revealing a thickness-bandwidth-absorption trade-off in deep-subwavelength absorbers.