Phys.org September 2, 2024
An international team of researchers (Germany, Australia) created arrays of polymer beads (photonic units) incorporating photo-switchable DAE molecules using surface-templated electrophoretic deposition. They could be reversibly and individually switched between high and low emission states by direct photoexcitation, without any energy or electron transfer processes within the molecular system. The micropatterned array of these photonic units was spectroscopically characterized in detail and optimized with respect to both signal contrast and crosstalk. The optimum optical parameters were determined. 500 cycles were demonstrated with no obvious on/off contrast attenuation. They demonstrated the possibility of continuous recording. According to the researchers their basic study paves the way for building complex circuits using spatially well-arranged photonic units… read more. Open Access TECHNICAL ARTICLE
Timing sequence for initialization… Credit: Advanced Optical Materials, 16 July 2024