Martinez Luciana P, Poklepovich-Caride Santiago, Gargiulo Julian, Martínez Eduardo D, Stefani Fernando D, Angelomé Paula C, Violi Ianina L
Centro de Investigaciones en Bionanociencias (CIBION), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Godoy Cruz 2390, CABA, Argentina.
Gerencia Química & Instituto de Nanociencia y Nanotecnología, Centro Atómico Constituyentes, Comisión Nacional de Energía Atómica, CONICET, Av. Gral. Paz 1499, B1650KNA San Martín, Buenos Aires, Argentina.
Nano Lett. 2023 Apr 12;23(7):2703-2709. doi: 10.1021/acs.nanolett.2c05109. Epub 2023 Mar 23.
Obtaining arrays of single nanoparticles with three-dimensional complex shapes is still an open challenge. Current nanolithography methods do not allow for the preparation of nanoparticles with complex features like nanostars. In this work, we investigate the optical printing of gold nanostars of different sizes as a function of laser wavelength and power. We found that tuning the laser to the main resonances of the nanostars in the near-infrared makes it possible to avoid nanoparticles reshaping due to plasmonic heating, enabling their deposition at the single particle level and in ordered arrays.
获得具有三维复杂形状的单个纳米颗粒阵列仍然是一个悬而未决的挑战。当前的纳米光刻方法无法制备具有诸如纳米星等复杂特征的纳米颗粒。在这项工作中，我们研究了不同尺寸的金纳米星作为激光波长和功率函数的光学打印。我们发现，将激光调谐到纳米星在近红外区域的主要共振，可以避免由于等离子体加热导致的纳米颗粒重塑，从而能够在单颗粒水平和有序阵列中进行沉积。
