Electro-optic properties of polystyrene particle-laden polymer-stabilized liquid crystals

Gruzdenko, Alexandra; Dierking, Ingo

doi:10.1039/d3tc00437f

Cited by 5 publications

(3 citation statements)

References 64 publications

(130 reference statements)

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“…In PSLC films, the dominant component is LCs, with a low mass fraction of polymers serving as stabilizers. [38] We opted for NLCs (5CB) as they are well-suited for polymer/liquid crystal blends. [39] Polycarbonate (PC) polymers are used to anchor the LCs in PSLC films, [40,41] which construct the networks and establish the initial alignment of LCs while maintaining a specific orientational state without additional orientation procedures.…”

Section: Principle and Conceptmentioning

confidence: 99%

“…[16,42] This approach does not require extra energy consumption to maintain states, reduces preparation difficulty, and significantly decreases liquid crystals' response times. [18,38,43] Depending on the material system, PSLC films based on 5CB LCs can reduce the response time from seconds to milliseconds. [44][45][46] However, introducing a polymer network can increase the drive voltage, reducing modulation efficiency.…”

Section: Principle and Conceptmentioning

confidence: 99%

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Plasmonic‐Enhanced Polymer‐Stabilized Liquid Crystals Switching for Integrated Optical Attenuation

Jian,

Liu,

et al. 2024

Advanced Optical Materials

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Liquid crystals are widely used in photonics because of their profound electro–optic properties. However, the slow switching speeds (milliseconds) and the fluid nature of liquid crystals restrict their potential use in integrated photonics. In this work, polymer‐stabilized liquid crystals are utilized as the functional material to improve the response time with a polymer network that helps pre‐orientate the liquid crystal. Additionally, plasmonic slot structures are simultaneously employed to minimize the switch voltage by confining the optical field within the electrode spacing at subwavelength scales. Thanks to the large overlap of the optical and electric fields, the scattering states of the polymer‐stabilized liquid crystal can be effectively manipulated to modulate the loss of the propagating wave, resulting in strong optical attenuation in the integrated photonic platform. Specifically, a plasmonic enhanced polymer‐stabilized liquid crystal photonic device for operation at 1550 nm, which has a length of only 10 µm and shows an extinction ratio of 0.38 dB µm−1, with a power consumption of less than 6 µW and a response time ≈20 µs, resulting in a figure‐of‐merit of 0.012 mW.

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Section: Principle and Conceptmentioning

confidence: 99%

Section: Principle and Conceptmentioning

confidence: 99%

Plasmonic‐Enhanced Polymer‐Stabilized Liquid Crystals Switching for Integrated Optical Attenuation

Jian,

Liu,

et al. 2024

Advanced Optical Materials

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show abstract

“…Light shutters from PSCLCs are always utilized for greenhouse windows. Bistable devices based on PSCLCs have been extensively explored due to their energy-saving advantages; with an electrochromic layer, four operating states exist-transparent, light-scattering, colored transparent, and colored light-scattering-which can be regulated by the alternating frequency and the electric field direction [27].…”

Section: Psclcsmentioning

confidence: 99%

A Review of Developments in Polymer Stabilized Liquid Crystals

Li²,

Zhong

2023

Polymers

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Polymer-stabilized liquid crystals (PSLCs) are multi-functional materials consisting of polymer networks in a continuous phase of liquid crystals (LCs), of which polymer networks provide anchoring energy to align the LCs. A number of improvements are detailed, including polymer-stabilized nematic liquid crystals (PSNLCs), polymer-stabilized cholesteric liquid crystals (PSCLCs), polymer-stabilized blue phase liquid crystals (PSBPLCs), polymer-stabilized smectic liquid crystals (PSSLCs), polymer-stabilized ferroelectric liquid crystals (PSFLCs), and polymer-stabilized antiferroelectric liquid crystals (PSAFLCs) in this review. Polymer stabilization has achieved multiple functionalities for LCs; in smart windows, a sufficiently strong electric field allows the LCs to reorient and enables switching from a scattering (transparent) state to a transparent (scattering) state. For broadband reflectors, the reflection bandwidth of LCs is manually tuned by electric fields, light, magnetic fields, or temperature. PSBPLCs open a new way for next-generation displays, spatial light modulators, sensors, lasers, lenses, and photonics applications. Polymer networks in PSFLCs or PSAFLCs enhance their grayscale memories utilized in flexible displays and energy-saving smart cards. At the end, the remaining challenges and research opportunities of PSLCs are discussed.

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Enhanced thermo-electro-optical and dielectric properties of carbon nanoparticle-doped polymer dispersed liquid crystal based switchable windows

Katariya-Jain,

Mhatre,

Dierking

et al. 2024

Journal of Molecular Liquids

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Electro-optic properties of polystyrene particle-laden polymer-stabilized liquid crystals

Abstract: Particle-laden polymer-stabilized liquid crystal (PLPSLC) composites were studied as a means to improve the electro-optic properties of nematic liquid crystals. Polystyrene nanoparticles possesing no distinctive physical properties were chosen as...

Cited by 5 publications

References 64 publications

Plasmonic‐Enhanced Polymer‐Stabilized Liquid Crystals Switching for Integrated Optical Attenuation

Plasmonic‐Enhanced Polymer‐Stabilized Liquid Crystals Switching for Integrated Optical Attenuation

A Review of Developments in Polymer Stabilized Liquid Crystals

Enhanced thermo-electro-optical and dielectric properties of carbon nanoparticle-doped polymer dispersed liquid crystal based switchable windows

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