Research on a novel temperature indicating device based on Bragg reflection waveguide of planar texture cholesteric liquid crystal layer

Wang, Yakun; Ma, Zi-han; Li, Zhiguang; Zhang, Yanjun; Zhang, Hui; Zheng, Guoan; Xiao, Yu Bin

doi:10.1080/15421406.2022.2031447

Cited by 3 publications

(1 citation statement)

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“…The deformation of the actuator involves various types, thereby exhibiting complex color-changing behavior. For example, changes in temperature can induce alterations in molecular alignment, resulting in shifts in both shape and color [ 10 , 35 ]. Likewise, exposure to different wavelengths of light can trigger distinct structural color changes through isomerization or photothermal reactions [ 36 , 37 ].…”

Section: Basic Conceptsmentioning

confidence: 99%

Beyond Color Boundaries: Pioneering Developments in Cholesteric Liquid Crystal Photonic Actuators

Zhang,

Yang

et al. 2024

Micromachines

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Creatures in nature make extensive use of structural color adaptive camouflage to survive. Cholesteric liquid crystals, with nanostructures similar to those of natural organisms, can be combined with actuators to produce bright structural colors in response to a wide range of stimuli. Structural colors modulated by nano-helical structures can continuously and selectively reflect specific wavelengths of light, breaking the limit of colors recognizable by the human eye. In this review, the current state of research on cholesteric liquid crystal photonic actuators and their technological applications is presented. First, the basic concepts of cholesteric liquid crystals and their nanostructural modulation are outlined. Then, the cholesteric liquid crystal photonic actuators responding to different stimuli (mechanical, thermal, electrical, light, humidity, magnetic, pneumatic) are presented. This review describes the practical applications of cholesteric liquid crystal photonic actuators and summarizes the prospects for the development of these advanced structures as well as the challenges and their promising applications.

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Section: Basic Conceptsmentioning

confidence: 99%

Beyond Color Boundaries: Pioneering Developments in Cholesteric Liquid Crystal Photonic Actuators

Zhang,

Yang

et al. 2024

Micromachines

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Liquid Crystal Based Label-Free Optical Sensors for Biochemical Application

Tang,

Li,

Xie

et al. 2024

Photonic Sens

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Biochemical sensors have important applications in biology, chemistry, and medicine. Nevertheless, many biochemical sensors are hampered by intricate techniques, cumbersome procedures, and the need for labeling. In the past two decades, it has been discovered that liquid crystals can be used to achieve the optical amplification of biological interactions. By modifying recognition molecules, a variety of label-free biochemical sensors can be created. Consequently, biochemical sensors based on the amplification of liquid crystals have become one of the most promising sensors. This paper describes in detail the optical sensing principle of liquid crystals, sensing devices, and optical detection technologies. Meanwhile, the latest research findings are elucidated. Finally, the challenges and future research directions are discussed.

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