Graphene decorated with metallic nanoparticles exhibits electronic, optical, and mechanical properties that neither the graphene nor the metal possess alone. These composite films have electrical conductivity and optical properties that can be modulated by a range of physical, chemical, and biological signals. Such properties are controlled by the morphology of the nanoisland films, which can be deposited on graphene using a variety of techniques, including in situ chemical synthesis and physical vapor deposition. These techniques produce non-random (though loosely defined) morphologies, but can be combined with lithography to generate deterministic patterns. Applications of these composite films include chemical sensing and catalysis, energy storage and transport (including photoconductivity), mechanical sensing (using a highly sensitive piezroresistive effect), optical sensing (including so-called “piezoplasmonic” effects), and cellular biophysics (i.e sensing the contractions of cardiomyocytes and myoblasts).

中文翻译：

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石墨烯上的金属纳米岛：用于化学、机械、光学和生物应用的超材料

用金属纳米粒子装饰的石墨烯表现出石墨烯和金属单独所不具备的电子、光学和机械性能。这些复合薄膜具有导电性和光学特性，可以通过一系列物理、化学和生物信号进行调制。这些特性由纳米岛薄膜的形态控制，纳米岛薄膜可以使用多种技术沉积在石墨烯上，包括原位化学合成和物理气相沉积。这些技术产生非随机（尽管定义松散）的形态，但可以与光刻相结合来生成确定性图案。这些复合薄膜的应用包括化学传感和催化、能量存储和传输（包括光电导）、机械传感（使用高灵敏度压阻效应）、光学传感（包括所谓的“压电等离子体”效应）和细胞生物物理学（即传感）心肌细胞和成肌细胞的收缩）。