We show that topological interface mode can emerge in a one-dimensional elastic string system which consists of two periodic strings with different band topologies. To verify their topological features, Zak-phase of each band is calculated and reveals the condition of topological phase transition accordingly. Apart from that, the transmittance spectrum illustrates that topological interface mode arises when two topologically distinct structures are connected. The vibration profile further exhibits the non-trivial interface mode in the domain wall between two periodic string composites.

Nano-confined free radical polymerization of styrene within the hydrophobic interior of a unimolecular micelle in water was developed to produce living nanoparticles (LNPs) that contain living mono-disperse polystyrenes for further chain extension.