Cambridge researchers integrated nanoscale graphene capacitors into terahertz metamaterials to tune resonance rather than damp it.
The devices achieve over 99.99% modulation depth and 30 MHz speed at once, ranking among the best terahertz modulators.
A reflective back‐surface design boosts intensity modulation by more than four orders of magnitude.
This tunable-capacitor approach can be adapted to various metamaterial modulators and could power future terahertz communications and sensing.
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