Electrodeposition Smart Window Using Plasmonic Nanoparticles

The patent employs electrodeposition to induce phase transition of metal ions from dissolved state to solid nanoparticle formation. When voltage is applied, metal ions in the electrolyte undergo reduction and deposit as nanoparticles on the substrate, fundamentally changing the optical properties of the smart window. This phase transition mechanism enables effective light transmittance control with minimal continuous power consumption, as the deposited nanoparticles maintain their light-blocking effect without requiring sustained energy input.

The patent replaces the conventional liquid crystal or suspended particle display mechanisms with an electrodeposition-based metal nanoparticle array system. Instead of using complex liquid crystal molecules or suspended particles that require continuous power to maintain orientation, the system uses electrochemically deposited metal nanoparticles that passively maintain their light-blocking configuration. This substitution eliminates the need for continuous mechanical or electrical actuation, dramatically reducing power consumption while maintaining reliable light transmittance control.

The patent extracts and eliminates the need for multilayer transparent electrode structures by using a single substrate with electrodeposition. Instead of requiring multiple electrode layers to manipulate suspended particles, the invention uses a simplified configuration where metal nanoparticles are directly deposited onto a single substrate. This extraction of unnecessary structural complexity reduces device thickness while preserving the core functionality of light transmittance control through the metal nanoparticle array.

The patent employs composite material structures combining substrate, electrolyte layer, and electrodeposited metal nanoparticle array in a streamlined configuration. Rather than using multiple separate transparent electrode layers, the system integrates the functional elements into a compact composite structure where the metal nanoparticle array formed by electrodeposition serves as the active light-modulating component. This composite approach achieves effective light transmittance control with reduced overall device thickness compared to conventional multilayer electrode designs.

The patent utilizes electrodeposition-induced phase transition of metal ions to solid nanoparticle formation as the core mechanism for achieving effective light blocking. When voltage is applied, metal ions undergo reduction and deposit as a dense nanoparticle array on the substrate, creating an optically active layer that efficiently blocks light. Once deposited, the nanoparticles maintain their light-blocking configuration passively without requiring continuous energy input. This phase transition approach achieves superior light blocking efficiency with minimal electric energy consumption compared to conventional systems that require continuous power to maintain the blocked state.

The patent replaces conventional high-power light-blocking mechanisms with an electrodeposition-based metal nanoparticle array system. Instead of using liquid crystals or suspended particles that require continuous electrical actuation to maintain the blocked state, the system uses electrochemically deposited metal nanoparticles that passively maintain their light-blocking configuration. This substitution eliminates the need for continuous high-power electrical input, achieving effective light blocking with minimal energy consumption.