Tunable reflectance of an inverse opal–chiral nematic liquid crystal multilayer device by electric- or thermal-control

Zhang, Yuxian; Zhao, Weidong; Wen, Jiahui; Li, Jinming; Yang, Zhou; Wang, Dong; Cao, Hui; Quan, Maohua

doi:10.1039/c7cp01634d

Cited by 8 publications

(6 citation statements)

References 52 publications

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“…We believe that there are still many possibilities for new structures and device forms to be explored with CLC small molecules and oligomers. [157] PDLC coatings using TR-RC small-molecule CLCs trapped inside a polymer binder have been produced via one-step and two-step procedures. These PDLC configurations allow for more stable coatings and films, while maintaining many of the advantages of the small-molecule systems.…”

Section: Discussionmentioning

confidence: 99%

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Temperature‐Responsive Photonic Devices Based on Cholesteric Liquid Crystals

Zhang

Froyen

Schenning

et al. 2021

Advanced Photonics Research

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Cholesteric liquid crystals (CLCs) are a major class of photonic materials that display selective reflection properties arising from their helical ordering. The temperature response of CLCs, comprising dynamic reflection color changes upon variation of temperature, is exploited using material systems consisting of small mesogenic molecules, polymer‐dispersed liquid crystals (PDLCs), polymer‐stabilized liquid crystals (PSLCs), or liquid‐crystalline polymers. Taking advantage of the easy processability and flexibility of the molecular design, these temperature‐responsive CLCs are fabricated into different forms of photonic devices, including cells, coatings, free‐standing films, and 3D objects. Temperature‐responsive devices developed from CLCs are integrated for application in temperature sensors, energy‐saving smart windows, smart labels, actuators, and adding aesthetically pleasing features to common objects. Herein, the device capabilities of the different material systems of temperature‐responsive CLCs are summarized: small mesogenic molecules, PDLCs, PSLCs, and CLC polymers. For each system, examples of different device forms are presented, with their temperature responsiveness and the underlying mechanisms discussed. In addition, the potential of each material system for future device applications and product developments is envisioned.

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Section: Discussionmentioning

confidence: 99%

“…We believe that there are still many possibilities for new structures and device forms to be explored with CLC small molecules and oligomers. [ 157 ]…”

Section: Discussionmentioning

confidence: 99%

Temperature‐Responsive Photonic Devices Based on Cholesteric Liquid Crystals

Zhang

Froyen

Schenning

et al. 2021

Advanced Photonics Research

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“…Third, the availability of various electrically responsive materials greatly promotes the research of electrically driven PhC displays. [52][53][54][55][56][57] Ozin et al fabricated a 3D PhC containing SiO 2 colloidal microspheres and crosslinked network polyferrocenylsilane (PFS). By utilizing the expansion and contraction of PFS under electrochemical reactions, they could change the distance between SiO 2 spheres and thus change the color.…”

Section: Electric Driving Phc Displaymentioning

confidence: 99%

Bioinspired reflective display based on photonic crystals

Liu,

Hou,

Song

et al. 2024

Interdisciplinary Materials

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Reflective displays have the advantages of energy efficiency, high brightness, eye protection, and good readability, making them an attractive display technology. Photonic crystal (PhC) structural color is highly regarded as an ideal choice for reflective displays for its ecofriendliness, colorfastness, and adjustability. In this review, we introduce the fundamental classification and manufacturing methods of PhC reflective displays. We systematically summarize the display principles of PhC‐based displays driven by various stimuli. Furthermore, we present the latest research advancements in PhC displays based on smart actuators. Additionally, we offer a detailed overview of the current research status and application prospects of liquid crystal structural color displays and three‐dimensional PhC displays. Finally, we discuss the challenges faced by PhC displays and provide insights into their prospects.

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“…Compared with Li + and Na + (>1.5 V), the relatively low potential plateau of the electrochemical K‐(de)intercalation into WSe 2 (<1.0 V) is beneficial for the high working voltage of full cells, thereby improving the energy density of KEESs. [ 20,21 ] During the past several years, several precious works involved in the improvement of WSe 2 ‐based electrodes were mainly focused on constructing reasonable nanostructure and carbon coating. [ 18–20 ] However, evident structural distortion derived from the large K‐ion inserted in these electrodes is still inevitable, particularly after long cycles, resulting in drastically decayed cycling performance.…”

Section: Introductionmentioning

confidence: 99%

Unlock the Potassium Storage Behavior of Single‐Phased Tungsten Selenide Nanorods via Large Cation Insertion

Zhao

2022

Advanced Materials

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of KEES was severely hindered by the lack of suitable anodes that can endure the structure degradation during the reversible insertion of large size of K-ions (1.38 Å). [6][7][8][9] So far, various electrode materials, such as carbonaceous materials, K-alloying materials, metal oxides, and MXene, have been studied widely as battery-type anodes. [10][11][12] However, the research of KEESs is still in its early stages, and the development of suitable anode materials with high-rate capability still remains a great challenge. [13][14][15] 2D layered transition metal dichalcogenides (2D TMDs), including sulfides (e.g., MoS 2 , VS 2 , and ReS 2 ) and selenides (e.g., MoSe 2 , VSe 2 , and NbSe 2 ), have attracted attention as anode materials for K-ion batteries owing to their high theoretical capacities and tunable interlayer spacing. [16,17] Among the 2D TMDs, tungsten selenium (WSe 2 ) exhibits several attractive features for high-capacity and high-rate K storage. [18,19] The relatively large interlayer spacing of 0.678 nm for its (002) plane affords advantages for the (de) insertion of K + and the volume change during repeated cycling. Compared with Li + and Na + (>1.5 V), the relatively low potential plateau of the electrochemical K-(de)intercalation into WSe 2 (<1.0 V) is beneficial for the high working voltage of full cells, thereby improving the energy density of KEESs. [20,21] During the past several years, several precious works involved in the improvement of WSe 2 -based electrodes were mainly focused on constructing reasonable nanostructure and carbon coating. [18][19][20] However, evident structural distortion derived from the large K-ion inserted in these electrodes is still inevitable, particularly after long cycles, resulting in drastically decayed cycling performance. In addition, the sluggish K-ion diffusion in WSe 2 due to the limited interlayer space causes poor rate capability, suggesting that the accommodation of the bulky K + is less favorable than Li + and Na + in such compact layered structures.Clearly, the expansion and improvement of these studies on K-ion storage remain to be promoted, which is crucial in determining whether the KEES goals of high reversible capacity, superior rate capability, and favorable cycling stability can be achieved for WSe 2 materials. Previous research has demonstrated that large cations such as K + , NH 4 + , and polyaniline can be inserted into lattice during the synthesis process of 2D TMDs, layered oxides, oxyhydroxides, and olivines, resulting in increased electrochemically active surface area, lattice spacing Metal chalcogenide anodes with a layered structure have been regarded as potential K-based electrochemical energy storage devices with high energy density for large-scale energy storage applications. However, their development is impeded by the slow K-ion transport kinetics and poor structural stability. In this work, the energy-storage behavior is investigated first and decisively associated them with the capacity-degradation of the promising layer-struct...

show abstract

Tunable reflectance of an inverse opal–chiral nematic liquid crystal multilayer device by electric- or thermal-control

Cited by 8 publications

References 52 publications

Temperature‐Responsive Photonic Devices Based on Cholesteric Liquid Crystals

Temperature‐Responsive Photonic Devices Based on Cholesteric Liquid Crystals

Bioinspired reflective display based on photonic crystals

Unlock the Potassium Storage Behavior of Single‐Phased Tungsten Selenide Nanorods via Large Cation Insertion

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