Height-modulation of diffraction gratings by light-controlled capillary force lithography for structural coloring
Height-modulation of diffraction gratings by light-controlled capillary force lithography for structural coloring
复制标题
通过光控毛细管力光刻对衍射光栅进行高度调制以实现结构着色
DOI：
10.1117/12.2650950
复制
发表时间：
2023
期刊：
影响因子：
--
通讯作者：
Kim, Jaeyoun
中科院分区：
文献类型：
--
作者：
Ji, Myung Gi;Kim, Jaeyoun
衍射光栅在许多光学应用中无处不在，例如传感器、滤波器和光学安全设备。毛细管力光刻利用光聚合物的毛细管上升形成纳米级空腔，是一种简单快速的构建衍射光栅的方法，无需昂贵的仪器或复杂的步骤。借助空间光调制器，例如数字微镜器件，还可以对光栅的高度进行空间调制，打印出空间高度调制光栅。当白光通常照射到光栅上时，传播到光栅中的光会与传播到空气中的光发生干涉。通过改变光栅的高度，可以改变两束光的光路长度，从而产生不同的干涉效果和结构着色。光栅参数和图案化过程的明智设计甚至可以对多个图像进行编码。在这项工作中，通过光控毛细力光刻调整光栅的高度，我们演示了基于光栅的结构彩色印刷。该技术有望用于生产防伪、认证和加密的定制图案。
Diffraction gratings are ubiquitous in many optical applications such as sensors, filters, and optical security devices. Capillary force lithography, which utilizes the capillary rise of photopolymer into nanoscale cavities, is a simple and rapid method to construct diffraction gratings without necessitating expensive instruments or complex steps. With the help of spatial light modulators, such as the digital micromirror device, the height of the grating can also be spatially modulated, printing spatially height-modulated gratings. When white light normally impinges on the grating, the light propagates into the grating interferes with light that propagates into air. By varying the height of the grating, the optical path lengths of two lights can be varied, leading to different interference effects and structural coloring. Judicious design of the grating’s parameters and patterning process will even allow encoding of multiple images. In this work, by tuning the height of the grating through the light-controlled capillary force lithography, we demonstrate grating-based structural color printing. This technique is promising for producing the custom patterns for anti-counterfeiting, authentication, and cryptography.
影响因子：
3.4
作者：
Li Q;Ji MG;Chapagain A;Cho IH;Kim J
通讯作者：
Kim J
影响因子：
16.6
作者：
Siddique, Radwanul Hasan;Gomard, Guillaume;Hoelscher, Hendrik
通讯作者：
Hoelscher, Hendrik