In-situ observation method for the formation process of metallic nanoparticles: Fabrication of nanogap nanoparticle and sensor applications

抄録

Research on nanomaterials often focuses on thin films and nanoparticles with uniform shapes and internal structures. In contrast, our research focuses on “nanogap nanoparticles,” where nanoparticles are irregularly arranged on the substrate with nanoscale intervals. To fabricate nanogap nanoparticles, a method for real-time observation of the nanoparticles’ formation process is essential. We have developed a resistive spectroscopy method utilizing resonant vibrations of piezoelectric material. This paper presents a novel method for monitoring the formation process of nanoparticles and discusses our research findings on developing hydrogen gas sensors and observing the formation process of core–shell nanoparticles.