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Lithography-Free Plasmonic Color Printing with Femtosecond Laser on Semicontinuous Silver Films
ACS Photonics ( IF 6.5 ) Pub Date : 2020-12-08 , DOI: 10.1021/acsphotonics.0c01506 Sarah N. Chowdhury 1 , Piotr Nyga 1, 2 , Zhaxylyk A. Kudyshev 1 , Esteban Garcia Bravo 3 , Alexei S. Lagutchev 1 , Alexander V. Kildishev 1 , Vladimir M. Shalaev 1 , Alexandra Boltasseva 1
ACS Photonics ( IF 6.5 ) Pub Date : 2020-12-08 , DOI: 10.1021/acsphotonics.0c01506 Sarah N. Chowdhury 1 , Piotr Nyga 1, 2 , Zhaxylyk A. Kudyshev 1 , Esteban Garcia Bravo 3 , Alexei S. Lagutchev 1 , Alexander V. Kildishev 1 , Vladimir M. Shalaev 1 , Alexandra Boltasseva 1
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Plasmonic color printing with semicontinuous metal films is a lithography-free and environment-friendly method for generating nonfading bright colors. Such films are comprised of islands, metal nanoparticles and their clusters of various dimensions, which resonate at different wavelengths upon external light illumination, depending on the size and shape of the local particle structures. To experimentally realize systems that were optimized for achieving a broad color range and increased stability, various silver semicontinuous metal films were deposited on a metallic (Ag) mirror with a subwavelength-thick dielectric (SiO2) spacer. Femtosecond laser postprocessing was then introduced to extend the color gamut, through spectrally induced changes, from blue to red and yellow. Long-term stability and durability of the structures were addressed to enable nonfading colors with an optimized overcoating dielectric layer. The thickness of the proposed design is on the order of 100 nm, and it can be deposited on any substrate. These structures generate a broad range of long-lasting colors in reflection that can be applied to real-life artistic or technological applications with a spatial resolution on the order of 0.3 mm or less.
中文翻译：
飞秒激光在半连续银膜上进行无光刻等离子彩色印刷
半连续金属膜的等离子彩色印刷是一种无光刻且环保的方法，可产生不褪色的亮色。这样的膜由岛，金属纳米颗粒及其各种尺寸的簇组成，这些簇根据外部颗粒结构的大小和形状在外部光照射下以不同的波长共振。为了通过实验实现优化的系统，以实现较宽的色彩范围和更高的稳定性，将各种银半连续金属膜沉积在具有亚波长厚电介质（SiO 2）的金属（Ag）镜上）垫片。然后引入飞秒激光后处理，以通过光谱诱发的变化将色域从蓝色变为红色和黄色，从而扩展了色域。解决了结构的长期稳定性和耐久性问题，以实现具有优化的外涂层介电层的不褪色颜色。所提出设计的厚度约为100 nm，并且可以沉积在任何基板上。这些结构在反射时会产生各种持久的色彩，这些色彩可应用于现实生活中的艺术或技术应用，其空间分辨率约为0.3毫米或更小。
更新日期：2020-12-08
中文翻译：
飞秒激光在半连续银膜上进行无光刻等离子彩色印刷
半连续金属膜的等离子彩色印刷是一种无光刻且环保的方法，可产生不褪色的亮色。这样的膜由岛，金属纳米颗粒及其各种尺寸的簇组成，这些簇根据外部颗粒结构的大小和形状在外部光照射下以不同的波长共振。为了通过实验实现优化的系统，以实现较宽的色彩范围和更高的稳定性，将各种银半连续金属膜沉积在具有亚波长厚电介质（SiO 2）的金属（Ag）镜上）垫片。然后引入飞秒激光后处理，以通过光谱诱发的变化将色域从蓝色变为红色和黄色，从而扩展了色域。解决了结构的长期稳定性和耐久性问题，以实现具有优化的外涂层介电层的不褪色颜色。所提出设计的厚度约为100 nm，并且可以沉积在任何基板上。这些结构在反射时会产生各种持久的色彩，这些色彩可应用于现实生活中的艺术或技术应用，其空间分辨率约为0.3毫米或更小。
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