Radwanul Hasan Siddique has just received his PhD from Helmholtz Institute of Microstructure Technology (IMT) of Karlsruhe Institute of Technology (KIT), Germany and is going to start his postdoctoral research at California Institute of Technology (Caltech), USA. His research interests include understanding the light-matter interaction that creates the stunning structural color in nature, mostly butterflies and how this phenomena could be replicated artificially using nano/micro fabrication techniques for sustainable and multi-functional optical applications. He worked at University of Cambridge, UK as a visiting researcher. He completed his Masters degree under Erasmus Mundus EUROPHOTONICS, funded by EU Commission where he attended Karlsruhe Institute of Technology (KIT), Germany; Institute of Photonic Sciences (ICFO), Spain and CNRS laboratory Institute Fresnel, France. Before coming to Europe, Radwanul completed his BSc. in Electrical and Electronics Engineering from Bangladesh University of Engineering and Technology (BUET), Bangladesh.