Fast self-assembly of macroscopic blue phase 3D photonic crystals

Otón, Eva; Morawiak, Przemysław; Gaładyk, Katarzyna; Otón, J. M.; Piecek, Wiktor

doi:10.1364/oe.393197

Cited by 21 publications

(14 citation statements)

References 27 publications

(39 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Note also that the influence of a CLC periodic structure on the Cherenkov radiation in a CLC is similar to the one in the case of fluorescence in a CLC and, compared to the case of a homogeneous liquid, the additional diffraction Cherenkov cone in CLC (see Chpt.9 in [12]) is very similar to the fluorescence KLs studied above. Finally, it should be mentioned that the fluorescence KLs structure in Blue Phases (BPs) is very similar to the X-rays KLs because in the BP case the fluorescence KL cones are formed around different directions, as it happens in conventional crystals in the X-ray case (it was experimentally observed for BPs, see, for example [16][17][18]), in contrast to the CLC case, where all fluorescence KL cones are formed around the CLC spiral axis.…”

Section: Discussionmentioning

confidence: 99%

Optical Kossel Lines and Fluorescence in Photonic Liquid Crystals

Belyakov

2020

Crystals

View full text Add to dashboard Cite

We propose a general analytical way to describe the fluorescence peculiarities in photonic liquid crystals (revealing themselves as an optical analog of the X-ray Kossel lines in conventional crystals) based at the localized optical edge modes existing in perfect photonic liquid crystal layers. The proposed approach allows us to predict theoretically the properties of optical Kossel lines in photonic liquid crystal (fluorescence polarization, spectral and angular fluorescence distribution, influence of the light absorption in liquid crystal, and, in particular, existing the optical Borrmann effect if the absorption in liquid crystal is locally anisotropic). Comparison of the theoretical results and the known experimental data shows that the theory reproduces sufficiently well the observation results on the fluorescence in photonic liquid crystals. For confirming a direct connection of the optical Kossel lines to the localized optical edge modes in perfect photonic liquid crystal, we propose the application of time-delayed techniques in studying the optical Kossel lines.

show abstract

Section: Discussionmentioning

confidence: 99%

Optical Kossel Lines and Fluorescence in Photonic Liquid Crystals

Belyakov

2020

Crystals

View full text Add to dashboard Cite

show abstract

“…Otón et al prepared large monocrystalline BPLCs with ideal lattice orientation by a simple surface treatment and controlling the amount of precursor materials. [ 127,128 ] Instead of using traditional polyimide as alignment layers, they used Nylon 6 and Nylon 6‐6 polyamide layers. The anchoring energies of polyamide are one or two orders of magnitude lower than that of polyimides.…”

Section: Lattice Orientation Control Of Bplcsmentioning

confidence: 99%

3D Chiral Photonic Nanostructures Based on Blue‐Phase Liquid Crystals

Yang

2021

Small Science

View full text Add to dashboard Cite

3D photonic nanostructures with intrinsic chirality have recently entered the research limelight due to their fundamental importance and potential technological applications. Blue‐phase liquid crystals (BPLCs) with chiral cubic nanostructures are an inventive example of 3D chiral photonic nanostructures. The inherently self‐organized 3D chiral nanostructures give rise to a complete photonic bandgap, which results in the selective reflection of circularly polarized light in all three dimensions. Herein, a comprehensive review of the state‐of‐the‐art of BPLCs and their potential applications is presented. First, the history and fundamentals of BPLCs are introduced. Then, the recent endeavors in the design, synthesis, and properties of BPLCs such as lattice orientation control with different techniques, photonic bandgap tuning with external fields, and fabrication of free‐standing BPLC polymer films are summarized. Finally, a discussion of the future challenges and potential applications of BPLCs is provided. It is believed that this review would stimulate innovative ideas for the design and engineering of novel chiral nanostructured materials for advanced photonic systems with tailorable functionalities.

show abstract

“…To improve the response time of the LC device, manipulation with a driving signal, temperature, thickness of the LC layer or changes to the order of the molecules can be used. Furthermore, special materials have been designed to meet the requirements of fast response time, such as the cholesterics [ 31 ], blue phases [ 32 ] or very fast DFLCs [ 33 , 34 ] mentioned above. An interesting and promising method to speed up the response time is polymerization of the LC host with a monomer to obtain a polymer network LC (PNLC) and polymer-stabilized LC (PSLC) [ 35 , 36 , 37 ].…”

Section: Introductionmentioning

confidence: 99%

Electro-Optical and Photo Stabilization Study of Nematic Ternary Mixture

et al. 2021

View full text Add to dashboard Cite

Liquid crystal materials composed of mixed nematic compounds find broad use in liquid crystal displays and photonic applications. A ternary mixture formed from three different nematic compounds shows peculiar behavior such as tunable electro-optical properties dependent on the frequency of the driving voltage. The paper presents an analysis of the response time and phase retardation of a frequency tunable nematic liquid crystal mixture (under code name 5005). This material possesses high birefringence (Δn = 0.32 at 633 nm) as well as high dielectric anisotropy (Δε = 6.3 at 100 Hz). The unique property of the 5005 mixture is frequency-controlled phase modulation, as in a dual frequency liquid crystal, while dielectric anisotropy goes to zero instead of being negative at high frequencies. For each component of the mixture, details on mesomorphic properties and their role in the formulation of the mixture are reported. The 5005 mixture was characterized by multiple investigation techniques, such as temperature dependence dielectric anisotropy, transmittance measurements image polarizing microscopy, and UV stability.

show abstract

Fast self-assembly of macroscopic blue phase 3D photonic crystals

Cited by 21 publications

References 27 publications

Optical Kossel Lines and Fluorescence in Photonic Liquid Crystals

Optical Kossel Lines and Fluorescence in Photonic Liquid Crystals

3D Chiral Photonic Nanostructures Based on Blue‐Phase Liquid Crystals

Electro-Optical and Photo Stabilization Study of Nematic Ternary Mixture

Contact Info

Product

Resources

About