Transforming UV‐Curable Emulsions for Arbitrary Patterning: A 2‐Layer Approach without Line‐and‐Space Constraints.

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Title: Transforming UV‐Curable Emulsions for Arbitrary Patterning: A 2‐Layer Approach without Line‐and‐Space Constraints.
Authors: Inaba, Yoshimi1 (AUTHOR) yoshimi.inaba@toppan.co.jp, Kurauchi, Yasunori1 (AUTHOR), Yanagisawa, Takayuki1 (AUTHOR)
Source: Macromolecular Materials & Engineering. Aug2025, Vol. 310 Issue 8, p1-16. 16p.
Subjects: Self-organizing systems, Multilayers, Ecological impact, Microemulsions, Production engineering
Abstract: The development of on‐demand patterning technology aims to replace traditional methods such as embossing, photoetching, and screen printing, offering an efficient process with low environmental impact and high industrial value. By directly exposing an oil‐in‐water (O/W) UV‐curable emulsion liquid film to a UV light pattern and then drying the film, large‐pitch‐and‐depth uneven (concave–convex) patterns can form in a self‐organizing manner. This method utilizes the aggregation of cured emulsion in the liquid film and the coalescence of uncured droplets in unexposed areas during drying. The coalesced oligomer droplets penetrate the voids in the cured‐particle pattern layer, creating an uneven structure. However, when the line‐and‐space (L/S) ratio is 1/1 or larger, the density of voids in the pattern film increases, and when it is <1/1, the pattern edges lose sharpness, limiting the method to repetitive patterns. In this study, a 2‐layer emulsion film: the lower layer absorbs the coalesced oligomer droplets from unexposed areas, and the upper layer forms a cured‐particle aggregation pattern is proposed. This approach allows arbitrary patterning without L/S constraints and produces no waste other than dried water. An example of arbitrary pattern formation with a depth of ≈0.3 to 0.4 mm is demonstrated. [ABSTRACT FROM AUTHOR]
Copyright of Macromolecular Materials & Engineering is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Transforming UV‐Curable Emulsions for Arbitrary Patterning: A 2‐Layer Approach without Line‐and‐Space Constraints.
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  Data: The development of on‐demand patterning technology aims to replace traditional methods such as embossing, photoetching, and screen printing, offering an efficient process with low environmental impact and high industrial value. By directly exposing an oil‐in‐water (O/W) UV‐curable emulsion liquid film to a UV light pattern and then drying the film, large‐pitch‐and‐depth uneven (concave–convex) patterns can form in a self‐organizing manner. This method utilizes the aggregation of cured emulsion in the liquid film and the coalescence of uncured droplets in unexposed areas during drying. The coalesced oligomer droplets penetrate the voids in the cured‐particle pattern layer, creating an uneven structure. However, when the line‐and‐space (L/S) ratio is 1/1 or larger, the density of voids in the pattern film increases, and when it is &lt;1/1, the pattern edges lose sharpness, limiting the method to repetitive patterns. In this study, a 2‐layer emulsion film: the lower layer absorbs the coalesced oligomer droplets from unexposed areas, and the upper layer forms a cured‐particle aggregation pattern is proposed. This approach allows arbitrary patterning without L/S constraints and produces no waste other than dried water. An example of arbitrary pattern formation with a depth of ≈0.3 to 0.4 mm is demonstrated. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: &lt;i&gt;Copyright of Macromolecular Materials &amp; Engineering is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder&#39;s express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.&lt;/i&gt; (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1002/mame.202500016
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      – Code: eng
        Text: English
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        PageCount: 16
        StartPage: 1
    Subjects:
      – SubjectFull: Self-organizing systems
        Type: general
      – SubjectFull: Multilayers
        Type: general
      – SubjectFull: Ecological impact
        Type: general
      – SubjectFull: Microemulsions
        Type: general
      – SubjectFull: Production engineering
        Type: general
    Titles:
      – TitleFull: Transforming UV‐Curable Emulsions for Arbitrary Patterning: A 2‐Layer Approach without Line‐and‐Space Constraints.
        Type: main
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      – PersonEntity:
          Name:
            NameFull: Inaba, Yoshimi
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            NameFull: Kurauchi, Yasunori
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            NameFull: Yanagisawa, Takayuki
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          Dates:
            – D: 01
              M: 08
              Text: Aug2025
              Type: published
              Y: 2025
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