材料科学
石墨烯
纳米尺度
扫描电镜
光电子学
纳米技术
氧化物
光子上转换
纳米颗粒
激光器
三维光学数据存储
受激发射
发光
光学
物理
冶金
作者
Simone Lamon,Yiming Wu,Qiming Zhang,Xiaogang Liu,Miṅ Gu
摘要
Nanoscale optical writing enables high-density optical data storage. However, current techniques usually require high laser beam intensity with high energy consumption and short device lifetime. Upconversion nanoparticles (UCNPs) have shown great potential for high-density optical data storage due to their exceptional luminescence emissions. In addition, UCNPs have enabled low-power STED microscopy. We show that UCNPs can induce the reduction of graphene oxide (GO) at the nanoscale. Dual-beam super-resolution irradiation was used to write features in UCNP-conjugated GO with lateral feature size at the nanoscale and inhibition intensity of <15 MW/cm^2. This approach might offers a convenient and energy-efficient solution for the storage demands in the Data Age.
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