Ayako Tsuboi

A Localized Surface Plasmon Resonance‐Based Multicolor Electrochromic Device with Electrochemically Size‐Controlled Silver Nanoparticles

The first localized surface plasmon resonance (LSPR)-based multicolor electrochromic device with five reversible optical states is demonstrated. In this device, the size of deposited silver nanoparticles is electrochemically controlled by using a voltage-step method in which two different voltages are applied successively. The electrochemically size-controlled silver nanoparticles enable a reversible multiple-color change by a shift of the LSPR band.

Electrochemical Optical‐Modulation Device with Reversible Transformation Between Transparent, Mirror, and Black

Chromogenic materials can change their optical properties in response to external stimuli, such as light irradiation [ 1–3 ] (photochromic materials), temperature change [ 4 , 5 ] (thermochromic materials), exposure to gas [ 6 , 7 ] (gaschromic materials), and the application of an electrical voltage [ 8–14 ] (electrochromic materials). Great interest has been drawn to the electrochromic effect exhibited by inorganic materials, because of their possible applications in information displays, [ 15 , 16 ] light shutters, [ 17 , 18 ]