High-Resolution Total Internal Reflection-Based Structural Coloration by Electrohydrodynamic Jet Printing of Transparent Polyethylene Glycol Microdomes.

IF 5.1 Q1 POLYMER SCIENCE

ACS Macro Letters Pub Date : 2024-11-14 DOI:10.1021/acsmacrolett.4c00512

Dongho Lee, Doyoung Byun, Dae-Hyun Cho

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Abstract

Total internal reflection (TIR)-based structural coloration is a brilliant strategy to overcome the need for periodic nanostructures and complex fabrication processes. Light entering the microdome structure undergoes TIR, and owing to varying reflection paths, it exhibits a color that changes with the microdome size. Although solution-based printing techniques have been proposed to achieve this effect, they fall short of full-color realization owing to resolution limitations. Herein, we achieved 3628 dpi of full-color and high-resolution structural color images by printing transparent microdome structures with 1.2-9.9 μm diameter using electrohydrodynamic (EHD) jet printing. Additionally, high-resolution EHD jet-printed structural color images display complex encoded information, enhancing the anticounterfeiting effectiveness through their fabrication simplicity and precise control over the microdome size. Because of these advantages, this TIR-based structural coloration technique with EHD jet printing is highly suitable for anticounterfeiting applications.

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通过电流体动力喷射打印透明聚乙二醇微域实现基于全内反射的高分辨率结构着色。

基于全内反射（TIR）的结构着色是克服周期性纳米结构和复杂制造工艺需求的一个绝妙策略。进入微圆顶结构的光线经过全内反射后，由于反射路径不同，会呈现出随微圆顶尺寸变化的颜色。虽然已有人提出了基于溶液的打印技术来实现这一效果，但由于分辨率的限制，这些技术无法实现全彩打印。在此，我们利用电流体动力（EHD）喷射打印技术打印了直径为 1.2-9.9 μm 的透明微圆顶结构，实现了 3628 dpi 的全彩高分辨率结构彩色图像。此外，高分辨率的 EHD 喷射印刷结构彩色图像可显示复杂的编码信息，通过其制造简便性和对微圆顶尺寸的精确控制，提高了防伪效果。由于这些优点，这种基于 TIR 的结构着色技术与 EHD 喷射打印技术非常适合防伪应用。

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来源期刊

ACS Macro Letters 化学-

CiteScore

10.40

自引率

3.40%

发文量

209

审稿时长

1 months

期刊介绍： ACS Macro Letters publishes research in all areas of contemporary soft matter science in which macromolecules play a key role, including nanotechnology, self-assembly, supramolecular chemistry, biomaterials, energy generation and storage, and renewable/sustainable materials. Submissions to ACS Macro Letters should justify clearly the rapid disclosure of the key elements of the study. The scope of the journal includes high-impact research of broad interest in all areas of polymer science and engineering, including cross-disciplinary research that interfaces with polymer science. With the launch of ACS Macro Letters, all Communications that were formerly published in Macromolecules and Biomacromolecules will be published as Letters in ACS Macro Letters.