Combining the eikonal impedance-mismatch cloak with a near-cloak (α=0.8, R~eq=0.25) cuts the cloak mass to 75% of a perfect cloak while the computed TSCS stays comparable to published underwater cloak values.
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Reduced-weight near-cloaks for underwater invisibility
Combining the eikonal impedance-mismatch cloak with a near-cloak (α=0.8, R~eq=0.25) cuts the cloak mass to 75% of a perfect cloak while the computed TSCS stays comparable to published underwater cloak values.