Three-Dimensionally Printed, Vertical Full-Color Display Pixels for Multiplexed Anticounterfeiting

Shiqi Hu; Xiao Huan; Jihyuk Yang; Huanqing Cui; Wei Gao; Yu Liu; Siu Fung Yu; Ho Cheung Shum; Ji Tae Kim

doi:10.1021/acs.nanolett.3c02916

Three-Dimensionally Printed, Vertical Full-Color Display Pixels for Multiplexed Anticounterfeiting

Shiqi Hu
, Xiao Huan
, Jihyuk Yang
, Huanqing Cui
, Wei Gao
, Yu Liu
, Siu Fung Yu
, Ho Cheung Shum
, Ji Tae Kim^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

18 Citations (Scopus)

Abstract

Information encryption strategies have become increasingly essential. Most of the fluorescent security patterns have been made with a lateral configuration of red, green, and blue subpixels, limiting the pixel density and security level. Here we report vertically stacked, luminescent heterojunction micropixels that construct high-resolution, multiplexed anticounterfeiting labels. This is enabled by meniscus-guided three-dimensional (3D) microprinting of red, green, and blue (RGB) dye-doped materials. High-precision vertical stacking of subpixel segments achieves full-color pixels without sacrificing lateral resolution, achieving a small pixel size of ∼μm and a high density of over 13,000 pixels per inch. Furthermore, a full-scale color synthesis for individual pixels is developed by modulating the lengths of the RGB subpixels. Taking advantage of these unique 3D structural designs, trichannel multiplexed anticounterfeiting Quick Response codes are successfully demonstrated. We expect that this work will advance data encryption technology while also providing a versatile manufacturing platform for diverse 3D display devices. © 2023 American Chemical Society.

Original language	English
Pages (from-to)	9953-9962
Journal	Nano Letters
Volume	23
Issue number	21
Online published	23 Oct 2023
DOIs	https://doi.org/10.1021/acs.nanolett.3c02916
Publication status	Published - 8 Nov 2023
Externally published	Yes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Funding

This work was supported by the General Research Fund (17200222, 17208919, 17204020) of the Research Grants Council of Hong Kong; the National Natural Science Foundation of China/Research Grants Council Joint Research Scheme (N_HKU743/22); and the Seed Fund for Basic Research (201910159047, 202111159097) of the University Research Committee (URC), The University of Hong Kong.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 9 Industry, Innovation, and Infrastructure

Research Keywords

3D printing
color synthesis
information encryption
multisegmented pixels
vertical stacking

RGC Funding Information

RGC-funded

Access Output

10.1021/acs.nanolett.3c02916

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Cite this

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title = "Three-Dimensionally Printed, Vertical Full-Color Display Pixels for Multiplexed Anticounterfeiting",

abstract = "Information encryption strategies have become increasingly essential. Most of the fluorescent security patterns have been made with a lateral configuration of red, green, and blue subpixels, limiting the pixel density and security level. Here we report vertically stacked, luminescent heterojunction micropixels that construct high-resolution, multiplexed anticounterfeiting labels. This is enabled by meniscus-guided three-dimensional (3D) microprinting of red, green, and blue (RGB) dye-doped materials. High-precision vertical stacking of subpixel segments achieves full-color pixels without sacrificing lateral resolution, achieving a small pixel size of ∼μm and a high density of over 13,000 pixels per inch. Furthermore, a full-scale color synthesis for individual pixels is developed by modulating the lengths of the RGB subpixels. Taking advantage of these unique 3D structural designs, trichannel multiplexed anticounterfeiting Quick Response codes are successfully demonstrated. We expect that this work will advance data encryption technology while also providing a versatile manufacturing platform for diverse 3D display devices. {\textcopyright} 2023 American Chemical Society.",

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T1 - Three-Dimensionally Printed, Vertical Full-Color Display Pixels for Multiplexed Anticounterfeiting

AU - Hu, Shiqi

AU - Huan, Xiao

AU - Yang, Jihyuk

AU - Cui, Huanqing

AU - Gao, Wei

AU - Liu, Yu

AU - Yu, Siu Fung

AU - Shum, Ho Cheung

AU - Kim, Ji Tae

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N2 - Information encryption strategies have become increasingly essential. Most of the fluorescent security patterns have been made with a lateral configuration of red, green, and blue subpixels, limiting the pixel density and security level. Here we report vertically stacked, luminescent heterojunction micropixels that construct high-resolution, multiplexed anticounterfeiting labels. This is enabled by meniscus-guided three-dimensional (3D) microprinting of red, green, and blue (RGB) dye-doped materials. High-precision vertical stacking of subpixel segments achieves full-color pixels without sacrificing lateral resolution, achieving a small pixel size of ∼μm and a high density of over 13,000 pixels per inch. Furthermore, a full-scale color synthesis for individual pixels is developed by modulating the lengths of the RGB subpixels. Taking advantage of these unique 3D structural designs, trichannel multiplexed anticounterfeiting Quick Response codes are successfully demonstrated. We expect that this work will advance data encryption technology while also providing a versatile manufacturing platform for diverse 3D display devices. © 2023 American Chemical Society.

AB - Information encryption strategies have become increasingly essential. Most of the fluorescent security patterns have been made with a lateral configuration of red, green, and blue subpixels, limiting the pixel density and security level. Here we report vertically stacked, luminescent heterojunction micropixels that construct high-resolution, multiplexed anticounterfeiting labels. This is enabled by meniscus-guided three-dimensional (3D) microprinting of red, green, and blue (RGB) dye-doped materials. High-precision vertical stacking of subpixel segments achieves full-color pixels without sacrificing lateral resolution, achieving a small pixel size of ∼μm and a high density of over 13,000 pixels per inch. Furthermore, a full-scale color synthesis for individual pixels is developed by modulating the lengths of the RGB subpixels. Taking advantage of these unique 3D structural designs, trichannel multiplexed anticounterfeiting Quick Response codes are successfully demonstrated. We expect that this work will advance data encryption technology while also providing a versatile manufacturing platform for diverse 3D display devices. © 2023 American Chemical Society.

KW - 3D printing

KW - color synthesis

KW - information encryption

KW - multisegmented pixels

KW - vertical stacking

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Three-Dimensionally Printed, Vertical Full-Color Display Pixels for Multiplexed Anticounterfeiting

Abstract

Bibliographical note

Funding

UN SDGs

Research Keywords

RGC Funding Information

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