Physics
Large area single crystal gold of single nanometer thickness for nanophotonics
C. Pan, Y. Tong, et al.
This groundbreaking research led by Chenxinyu Pan and colleagues showcases the fabrication of large-area single-crystal two-dimensional gold flakes. These ultrathin flakes, just a nanometer thick, exhibit unprecedented optical nonlinearity and hold immense potential for next-generation nanophotonic applications. Incredibly, they outshine their thicker counterparts in harmonic generation by over two orders of magnitude.
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