Stretchable photonic crystals with periodic cylinder shaped air holes for improving mechanochromic performance

Zhao, Pengfei; Li, Bo; Tang, Zhenhua; Gao, Yang; Tian, Hongmiao; Chen, Hualing

doi:10.1088/1361-665x/ab1fb8

Cited by 36 publications

(38 citation statements)

References 60 publications

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“…fabricated a flexible 2D photonic array by nanoimprinting. [ 69 ] With photolithography, 2D ordered nanoarray template was constructed previously. Afterwards, PDMS precursor was covered on the prefabricated template, followed by polymerized to achieve elastomer with 2D ordered cylindrical air holes.…”

Section: Fabrication and Mechanism Of Mechanochromic Structural‐colormentioning

confidence: 99%

“…Previously reported mechanochromic 2D photonic crystals were mainly manufactured through two strategies: the bottom‐up strategy, [ 36,67,68 ] and the top‐down one, [ 69,70 ] as discussed follows.…”

Section: Fabrication and Mechanism Of Mechanochromic Structural‐colormentioning

confidence: 99%

“…Notably, for the achievement of substantial and reversible mechanochromism, rigid 2D arrays fabricated by top‐down strategy are usually applied as templates to prepared elastic 2DPCs. [ 69,70 ] For example, Zhao et al. fabricated a flexible 2D photonic array by nanoimprinting.…”

Section: Fabrication and Mechanism Of Mechanochromic Structural‐colormentioning

confidence: 99%

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Mechanochromism of Structural‐Colored Materials

Chen

Hong

2020

Advanced Optical Materials

135

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In comparison with pigmentary colors, structural colors are with superior chemical stability and are resistant to photobleaching, making them promising candidates for color displays. What is more, the use of toxic dyes can be avoided by utilizing structural-colored materials to display various hues. Structural colors are widespread in nature and observed in opals, [3] beetles, [4] tropical fish, [5] peacock feathers, [6] chameleons, and similar iridescent materials. [7-9] Along with the growing understanding of the morphology and mechanism of natural structural-colored materials, their artificial counterparts have been manufactured with improved performance and functions consequently. Emerging structural-colored materials can be divided into three main categories according to their nanoscale architectures: photonic crystals (PCs), [10] liquid crystals (LCs), [11] and photonic glass. [12] Due to their ability to modulate visible light, the structural-colored materials have been applied in diverse domains such as optical waveguides, [13-16] luminescence enhancement, [17-19] photo electric devices, [20,21] photocatalysts, [22,23] anti-counterfeiting technologies, [24-26] and chemical and biological sensing. [27-29] With ingenious designs of nanostructures, a variety of responsiveness has been obtained on the structural-colored materials, corresponding to varying stimuli such as temperature, [30-32] solvent, [27] gases, [28] magnetic fields, [33] and external forces. [10-12] Among them, the mechanical responsive structural colors are able to visualize invisible stress in the materials, providing effective indicators for mechanical stimuli such as stretching, compression, or bending. Such mechanochromism can be directly achieved by the deformation-induced changes in periodic lattice constants of the structural-colored materials. [34,35] Recently developed mechanochromic structuralcolored materials have extended the responsive functions from conventional mechanical stimuli to complex signals such as electric stimuli. [10] In addition, although the color shift is a predominant method to achieve mechanochromic behavior, [34-36] increasing efforts have been made to develop mechanochromism based on polarization and transparence. [11,37,38] As one of the rapidly developing intelligent materials with multiresponse, [34,39,40] mechanochromic structural-colored materials have become promising in various applications, such as mechanical sensing, [11,41] colorful displays, [10,42] anti-counterfeiting, [26,37] and healthcare materials. [43,44] In this review, we summarize recent advances in mechanochromic structural-colored materials as shown in Figure 1.

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Section: Fabrication and Mechanism Of Mechanochromic Structural‐colormentioning

confidence: 99%

Section: Fabrication and Mechanism Of Mechanochromic Structural‐colormentioning

confidence: 99%

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Mechanochromism of Structural‐Colored Materials

Chen

Hong

2020

Advanced Optical Materials

135

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“…The fabricated structure presented a linear response and high reversibility under several deformation cycles; it was envisaged to apply this sensor to the detection of cracks on concrete bridges. In a very recent paper, Zhao et al [110] reported an elastic, stretchable, photonic crystal characterized by periodic cylinder-shaped air holes in triangular lattice. The mechanochromic response was enhanced by the particular geometric configuration, capable of undergoing up to 2000 stretching cycles of deformation without degradation, and with a color change ranging all the visible wavelengths with a low 29% stretching rate.…”

Section: Mechanochromic Sensors Based On Photonic Crystalsmentioning

confidence: 99%

Photonic Crystal Stimuli-Responsive Chromatic Sensors: A Short Review

et al. 2020

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Photonic crystals (PhC) are spatially ordered structures with lattice parameters comparable to the wavelength of propagating light. Their geometrical and refractive index features lead to an energy band structure for photons, which may allow or forbid the propagation of electromagnetic waves in a limited frequency range. These unique properties have attracted much attention for both theoretical and applied research. Devices such as high-reflection omnidirectional mirrors, low-loss waveguides, and high- and low-reflection coatings have been demonstrated, and several application areas have been explored, from optical communications and color displays to energy harvest and sensors. In this latter area, photonic crystal fibers (PCF) have proven to be very suitable for the development of highly performing sensors, but one-dimensional (1D), two-dimensional (2D) and three-dimensional (3D) PhCs have been successfully employed, too. The working principle of most PhC sensors is based on the fact that any physical phenomenon which affects the periodicity and the refractive index of the PhC structure induces changes in the intensity and spectral characteristics of the reflected, transmitted or diffracted light; thus, optical measurements allow one to sense, for instance, temperature, pressure, strain, chemical parameters, like pH and ionic strength, and the presence of chemical or biological elements. In the present article, after a brief general introduction, we present a review of the state of the art of PhC sensors, with particular reference to our own results in the field of mechanochromic sensors. We believe that PhC sensors based on changes of structural color and mechanochromic effect are able to provide a promising, technologically simple, low-cost platform for further developing devices and functionalities.

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“…With this method, MPCs with periodic cylinder shaped air holes have been prepared. It is reported that the sensor could achieve full-color change over the entire visible light range, but within a small strain of 29% [25]. Moreover, the high costs of the instruments and the complexity of the procedure are hampering the mass diffusion of these techniques.…”

Section: Introductionmentioning

confidence: 99%

Large-strain and full-color change photonic crystal films used as mechanochromic strain sensors

Zhang

Yang

Zheng

et al. 2021

J Mater Sci: Mater Electron

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Mechanochromic strain sensors based on photonic crystals, which can change structural color upon mechanical deformation, are promising for many applications including health monitoring and damage detection. Here, a large-strain and full-color change photonic crystal film as a mechanochromic strain sensor is reported. The mechanochromic photonic crystal (MPC) film with grating nanostructure is achieved by a fast and low-cost inverted nanoimprint lithography. The film enables bright and reversible color shift in the full visible range as it is stretched up to a large strain, which is proven in strain direction parallel and perpendicular to the grating. It is demonstrated that the MPC film can be used as a mechanochromic strain sensor able to visualize strain evolution and strain range of low carbon steel in tensile test, which brings a significant step toward visualizing strain monitoring.

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Stretchable photonic crystals with periodic cylinder shaped air holes for improving mechanochromic performance

Cited by 36 publications

References 60 publications

Mechanochromism of Structural‐Colored Materials

Mechanochromism of Structural‐Colored Materials

Photonic Crystal Stimuli-Responsive Chromatic Sensors: A Short Review

Large-strain and full-color change photonic crystal films used as mechanochromic strain sensors

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