Electrochemical Modulation of Photonic Metamaterials

• DOI: 10.1002/adma.201002734
• Publication Date: 2010-10-11T11:11:23Z
• Authors: Li‐Hua Shao; Matthias Ruther; Stefan Linden; Sabine Essig; Kurt Busch; Jörg Weissmüller; Martin Wegener
• Keywords: Modulation (music); Split-ring resonator; Photonic metamaterial

Thin gold split-ring resonators are exposed to an aqueous electrolyte. When varying the electrode potential by about 1 V, up 55-THz shifts of resonances centered at around 300 THz observed. By systematically electrode-potential window, reversible surface-charge effects can be separated from irreversible redistributions atoms.