Tuning Plasmonic Metasurfaces via Phase Change Material Substrates for Modulating Reactivity in Light-Driven Reactions
Friedrich-Schiller-Universität Jena（耶拿弗里德里希·席勒大学）；Australian National University（澳大利亚国立大学）；Xi’an University of Posts and Telecommunications（西安邮电大学）；University of Applied Sciences Landshut（兰茨胡特应用科学大学）
Ning Lyu, Anjalie Edirisooriya, Dawei Liu, Zelio Fusco, Shenyou Zhao, Lan Fu, Fiona J. Beck, Christin David
Phase change materials provide a powerful platform for dynamically modulating optical responses in nanophotonic systems. While plasmonic metasurfaces have been widely employed to enhance photocatalytic efficiency and promote particular light-driven reactions, active and dynamical control over reaction pathways within a single device remains challenging. Here, we report a phase-induced tunable metasurface that tailors photoexcited electron populations through mode hybridization, enabling selective control over the reactivity of light-driven chemical processes. By exploiting thermally induced refractive-index switching in a Sb2S3 cavity, the plasmonic resonance strength of Au nanodisks is actively tuned via cavity-plasmon hybridization. This reconfiguration modulates the product yield of methylene blue degradation by a factor of 2.4, suppressing to 0.45 in the crystalline phase and enhancing to 1.09 in the amorphous phase. Importantly, this reconfigurable platform enables dynamic control of the reaction yield using a single metasurface architecture under identical illumination conditions. Our approach establishes a dynamically programmable light-driven reaction platform capable of precisely manipulating reaction reactivity, offering new opportunities for selective photocatalysis in complex multibranch reaction systems.
Polarization-Sensitive Au-TiO2 Nanopillars for Tailored Photocatalytic Activity
Friedrich-Schiller-Universität Jena（耶拿弗里德里希·席勒大学）；Australian National University（澳大利亚国立大学）；The Australian National University（澳大利亚国立大学）；Friedrich Schiller University Jena（耶拿弗里德里希·席勒大学）；University of Applied Sciences Landshut（兰茨胡特应用科学大学）
Active tuning of ENZ resonances in meta-antenna through phase modulation of optical pulse
Institute of Nuclear Sciences, Hacettepe University（哈杰泰普大学核科学研究所）；Department of Nanotechnology and Nanomedicine, Graduate School of Science and Engineering, Hacettepe University（哈杰泰普大学理科学院纳米技术与纳米医学系）；Department of Physics, Akdeniz University（安塔利亚地中海大学物理系）；Türkiye National Observatories, TUG（土耳其国家天文台）；Department of Nanoscience and Nanotechnology, Faculty of Arts and Science, Burdur Mehmet Akif Ersoy University（布尔杜尔穆罕默德阿基夫埃尔索伊大学文理学院纳米科学与纳米技术系）
