Saitow Ken-Ichi, Okamoto Yoshinori, Suemori Hidemi
Natural Science Center for Basic Research and Development (N-BARD), and Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-hiroshima 739-8526, Japan.
ACS Omega. 2019 Aug 19;4(10):14307-14311. doi: 10.1021/acsomega.9b01999. eCollection 2019 Sep 3.
Size-selected submicron spheres become very useful building blocks if the spheres could be synthesized and integrated at any desired position. In particular, spheres having a similar size to visible-light wavelength have attracted much attention. Here, we show the synthesis and assembly of size-selected submicron gold spheres using pulsed laser ablation of a gold plate in a supercritical fluid. Four findings were obtained in the study. Submicron spheres with a narrow size distribution were generated, and the polydispersity was ≈ 6%. The average diameter was controlled from 600 to 1000 nm. A thermodynamic condition for scalable synthesis was found. The assembly of spheres onto a metal, carbon, or plastic substrate was accomplished.
如果能够在任何期望的位置合成并集成尺寸选择的亚微米球体，那么它们将成为非常有用的构建块。特别是，尺寸与可见光波长相似的球体引起了广泛关注。在这里，我们展示了在超临界流体中使用脉冲激光烧蚀金板来合成和组装尺寸选择的亚微米金球体。该研究获得了四项发现。生成了尺寸分布狭窄的亚微米球体，其多分散性约为6%。平均直径可控制在600至1000纳米之间。发现了可扩展合成的热力学条件。实现了球体在金属、碳或塑料基板上的组装。
