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Dual-Cell Polymer–Liquid Crystal Device for Independent Modulation of Light Absorption and Scattering.

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Title: Dual-Cell Polymer–Liquid Crystal Device for Independent Modulation of Light Absorption and Scattering.
Authors: Hou, Chien-Tsung1 (AUTHOR) lchien@kent.edu, Mi, Xiang-Dong2 (AUTHOR) hem@corning.com, He, Mingqian1,2 (AUTHOR), Chien, Liang-Chy1,2 (AUTHOR)
Source: Polymers (20734360). Jun2026, Vol. 18 Issue 11, p1405. 11p.
Subjects: Light absorption, Light scattering, Electrochromic windows, Electrodes, Optical modulation, Photonics, Optical devices, Polymer liquid crystals
Abstract: Polymer–liquid crystal (polymer–LC) composites enable electrically tunable optical modulation through the coupling of molecular anisotropy and polymer-induced stabilization. However, most dual-cell LC architectures that independently control absorption and scattering rely on four substrates and multiple independently driven electrode layers, resulting in increased fabrication complexity. In this work, a dual-cell polymer–LC device employing a simplified asymmetric electrode architecture is demonstrated to achieve independent control of absorption and scattering within a three-substrate configuration. The device integrates a dye-doped vertically aligned super-twisted nematic (DDVSTN) cell for absorption-based modulation and a reverse-mode polymer-stabilized cholesteric texture (PSCT) cell for electrically induced scattering. The PSCT layer is driven by interdigitated electrodes on the bottom substrate, while the DDVSTN layer is driven by vertical electric fields, preserving electrical decoupling between the two cells. Four distinct optical states—clear, tinted, private, and tinted-private—are achieved through selective voltage addressing. Spectral measurements confirm stable four-state optical modulation with transmittance varying from approximately 60% in the clear state to about 13% in the tinted-private state. The proposed architecture reduces electrode-layer complexity while maintaining independent optical control, providing a fabrication-efficient platform for smart window systems and polymer–LC photonic devices. [ABSTRACT FROM AUTHOR]
Copyright of Polymers (20734360) is the property of MDPI 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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DbLabel: Engineering Source
An: 194587669
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PubTypeId: academicJournal
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Dual-Cell Polymer–Liquid Crystal Device for Independent Modulation of Light Absorption and Scattering.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Hou%2C+Chien-Tsung%22">Hou, Chien-Tsung</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> lchien@kent.edu</i><br /><searchLink fieldCode="AR" term="%22Mi%2C+Xiang-Dong%22">Mi, Xiang-Dong</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> hem@corning.com</i><br /><searchLink fieldCode="AR" term="%22He%2C+Mingqian%22">He, Mingqian</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chien%2C+Liang-Chy%22">Chien, Liang-Chy</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Polymers+%2820734360%29%22">Polymers (20734360)</searchLink>. Jun2026, Vol. 18 Issue 11, p1405. 11p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Light+absorption%22">Light absorption</searchLink><br /><searchLink fieldCode="DE" term="%22Light+scattering%22">Light scattering</searchLink><br /><searchLink fieldCode="DE" term="%22Electrochromic+windows%22">Electrochromic windows</searchLink><br /><searchLink fieldCode="DE" term="%22Electrodes%22">Electrodes</searchLink><br /><searchLink fieldCode="DE" term="%22Optical+modulation%22">Optical modulation</searchLink><br /><searchLink fieldCode="DE" term="%22Photonics%22">Photonics</searchLink><br /><searchLink fieldCode="DE" term="%22Optical+devices%22">Optical devices</searchLink><br /><searchLink fieldCode="DE" term="%22Polymer+liquid+crystals%22">Polymer liquid crystals</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Polymer–liquid crystal (polymer–LC) composites enable electrically tunable optical modulation through the coupling of molecular anisotropy and polymer-induced stabilization. However, most dual-cell LC architectures that independently control absorption and scattering rely on four substrates and multiple independently driven electrode layers, resulting in increased fabrication complexity. In this work, a dual-cell polymer–LC device employing a simplified asymmetric electrode architecture is demonstrated to achieve independent control of absorption and scattering within a three-substrate configuration. The device integrates a dye-doped vertically aligned super-twisted nematic (DDVSTN) cell for absorption-based modulation and a reverse-mode polymer-stabilized cholesteric texture (PSCT) cell for electrically induced scattering. The PSCT layer is driven by interdigitated electrodes on the bottom substrate, while the DDVSTN layer is driven by vertical electric fields, preserving electrical decoupling between the two cells. Four distinct optical states—clear, tinted, private, and tinted-private—are achieved through selective voltage addressing. Spectral measurements confirm stable four-state optical modulation with transmittance varying from approximately 60% in the clear state to about 13% in the tinted-private state. The proposed architecture reduces electrode-layer complexity while maintaining independent optical control, providing a fabrication-efficient platform for smart window systems and polymer–LC photonic devices. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Polymers (20734360) is the property of MDPI 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.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.3390/polym18111405
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 11
        StartPage: 1405
    Subjects:
      – SubjectFull: Light absorption
        Type: general
      – SubjectFull: Light scattering
        Type: general
      – SubjectFull: Electrochromic windows
        Type: general
      – SubjectFull: Electrodes
        Type: general
      – SubjectFull: Optical modulation
        Type: general
      – SubjectFull: Photonics
        Type: general
      – SubjectFull: Optical devices
        Type: general
      – SubjectFull: Polymer liquid crystals
        Type: general
    Titles:
      – TitleFull: Dual-Cell Polymer–Liquid Crystal Device for Independent Modulation of Light Absorption and Scattering.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Hou, Chien-Tsung
      – PersonEntity:
          Name:
            NameFull: Mi, Xiang-Dong
      – PersonEntity:
          Name:
            NameFull: He, Mingqian
      – PersonEntity:
          Name:
            NameFull: Chien, Liang-Chy
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          Dates:
            – D: 01
              M: 06
              Text: Jun2026
              Type: published
              Y: 2026
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              Value: 20734360
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              Value: 18
            – Type: issue
              Value: 11
          Titles:
            – TitleFull: Polymers (20734360)
              Type: main
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