Asymmetric optical camouflage: Tuneable reflective color accompanied by optical Janus effect

In modern optics, a variety of nanoscale materials and their localisation have been examined, as they lead to novel optical effects. Viewing a direction sensitive information display utilizing the optical Janus effect has attracted great attention owing to its dynamic operation scheme which allows for discriminative information delivery. However, the integration of nano-materials within multiple layers limit their application in dynamic and real-time color tuning.