Circularly Polarized Ultrafast Laser-Fluid-Matter Interaction Induced Chiral Nanostructures Self-assembly

As a proof of concept, inspired by the fluid effect during laser irradiation [3], we choose a low-melting-point film and develop the laser-induced nanoscale Rayleigh-Taylor instability (nano-RTI) to trigger the SSB. Specifically, the nano-RTI will alter the original circular seed to a flower-like seed, and with the help of anisotropic SOI, a simple and rapid self-assembly of chiral structure is realized (Fig. 1(b)). The structure can be further tuned by changing the fabrication parameters (pulse energy, pulse number and different objective lenses), as illustrated in Fig. 1(c).