A microsecond-response polymer-stabilized blue phase liquid crystal

Chen, Yuan; Yan, Jin; Sun, Jie; Wu, Shin‐Tson; Liang, Xiao; Liu, Shih-Hsien; Hsieh, Pao-Ju; Cheng, Kung‐Lung; Shiu, Jyh‐Wen

doi:10.1063/1.3662391

Cited by 109 publications

(73 citation statements)

References 22 publications

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“…It is known that the BPLC response time in the low field region where lattice distortion does not occur is primarily governed by the viscosity, average elastic constant, and pitch length. 7,23,37 Polymer structure and polymer concentration also play important roles. 32 Although the viscosity of our JC-BP06N is quite high, the monomer (TMPTA) we employed has three functional groups, which provides strong crosslinking networks and helps reduce the response time.…”

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confidence: 99%

“…Polymer-stabilized blue-phase liquid crystal (PS-BPLC) 1-5 exhibits three distinctive features: (1) self-assembly process so that no surfactant (e.g., rubbed polyimide layer) is needed to generate uniform molecular alignment, (2) nanoscale ($100 nm) double-twist cylinder diameter and short coherence length, which leads to microsecond response time, 6,7 and (3) three-dimensional lattice structure resulting in optically isotropic voltage-off state. Alignment-layer-free process greatly simplifies device fabrication process.…”

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confidence: 99%

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A low voltage and submillisecond-response polymer-stabilized blue phase liquid crystal

Chen¹,

Xu²,

Wu³

et al. 2013

Applied Physics Letters

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140

107

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We report a polymer-stabilized blue phase liquid crystal (BPLC) whose Kerr constant is about 2.2× larger than previous record. When filled in a 3.2-μm-thick vertical field switching cell, the on-state voltage is merely 8.4 V (at λ = 514 nm) while keeping submillisecond response time and negligible hysteresis (<1%) at the room temperature. These results imply that the dawn of BPLC era for high speed display and photonic devices has finally arrived.

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confidence: 99%

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confidence: 99%

A low voltage and submillisecond-response polymer-stabilized blue phase liquid crystal

Chen¹,

Xu²,

Wu³

et al. 2013

Applied Physics Letters

Self Cite

140

107

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“…Since the rising operating temperature diminishes the rotational viscosity, the relaxation process becomes faster (cf. 9.13) [127]. The findings about the mode stability of BP random lasing indicate that the grain size and orientational uniformity are believed to play a crucial role in the stability of BP under the influence of external stimuli (cf.…”

Section: Optical Isotropy and Fast Electro-optic Responsementioning

confidence: 95%

Self-Organized 3D Photonic Superstructure: Blue Phase Liquid Crystal

Lin

Chen

2015

Anisotropic Nanomaterials

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Blue phase liquid crystals (BPLCs) have attracted considerable attention in recent years owing to their unique periodic structure and electro-optic properties. Besides the potential applications in the next generation display, BPLC with a cubic lattice structure can be regarded as a self-organized three-dimenstional (3D) photonic crystal that can be applied for photonic devices such as optical filter, optical attenuator, phase modulator, laser source and so on. This chapter will introduce the formation of BPLCs from both theoretical and experimental points of view. The stability and temperature range of BPLCs are also discussed followed by its photonic crystal structure, lattice orientation and phase identification. After a basic overview, this chapter will further introduce the applications of BPLCs, including controllability of photonic band gap with external fields, fast electro-optic Kerr effect, and optical nonlinear effect. This short summary shows that the century old intriguing BPLCs have diverse opportunities to offer in modern photonic materials and devices. Moreover, the current challenges in this area are expected to spark innovative ideas leading toward the design and engineering of new chiral materials that may furnish suitable BPLCs to produce advanced photonic materials that have desirable properties and functions.

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“…There is no viewing angle problem when a BPLCD is driven by an electric field, so there has been a shift in attention from a focus on in-plane-switching (IPS) to vertical-field-switching (VFS) [5][6][7][8][9][10]. Because there is no brightness by normal incident light, a VFS BPLCD needs an oblique incident light source that their configurations are complicated and costly in real manufacturing.…”

Section: Introductionmentioning

confidence: 99%