The preparation procedure only needs to mix the two phases of Au hydrosol and oil and then to shake for a while.

• 该方法克服了传统制备金纳米粒子薄膜需要引入第三种助剂的缺点，仅用金溶胶和另外一种疏水溶剂通过简单的混合，就可得到金纳米粒子单层薄膜。