Front Cover: Using Fiber Bragg Grating Sensors to Quantify Temperature Non‐Uniformities in Plasmonic Catalyst Beds under Illumination (ChemPhotoChem 4/2022). - Xu, Man; den Hartog, Tim; Cheng, Lun; Wolfs, Marciano; Habets, Roberto; Rohlfs, Jelle; van den Ham, Jonathan; Meulendijks, Nicole; Sastre, Francesc; Buskens, Pascal (ChemPhotoChem, 2022)