Multi-responsive, flexible, and structurally colored film based on a 1D diffraction grating structure

Wen, Xiaoxiang; Lu, Xuegang; Li, Jianing; Wei, Chaoping; Qin, Hongji; Liu, Yuting

doi:10.1016/j.isci.2022.104157

Cited by 8 publications

(3 citation statements)

References 33 publications

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“…We have also investigated the optical properties of multimode wrinkles to demonstrate broad application prospects of such wrinkles induced by three-axial strain. − Figure a shows the diffraction patterns of laser light (532 nm) in the transmission mode from a sample corner to the opposite edge. More details are shown in Figure S12.…”

Section: Resultsmentioning

confidence: 99%

“…Strain loading is an important technique to tailor the surface structures and functional performances of flexible film systems. − ,− Here, we investigate the tuneability of light diffraction properties for striped (at corner) and labyrinth-like (in center) wrinkles by applying mechanical strain, as shown in Figure c. It is clear that as the mechanical strain increases, the diffraction patterns shrink gradually both for striped and labyrinth-like wrinkles, but their diffraction features (spotted line or concentric ring) remain unchanged.…”

Section: Resultsmentioning

confidence: 99%

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Retraction of “Three-Axial Strain-Triggered Multimode Wrinkles with Tuneable Frictional and Optical Performances”

Wang

et al. 2023

ACS Appl. Mater. Interfaces

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Wrinkled surfaces driven by stresses/strains are very common in living bodies and geologic structures. The nature-inspired wrinkle patterns have great application prospects in the fields of microfluidics, flexible electronics, smart optics, adhesion, and sensors. Although various wrinkles with single features such as stripes, herringbones, labyrinths, hierarchies, and periodic arrays have been extensively reported, achieving multimode wrinkles in a single sample with large scales is still a challenge. Here, we develop a facile technique to prepare controllable multimode wrinkles in flexible film systems by simply applying three-axial strain. It shows that striped, rippled, and labyrinth-like wrinkles spontaneously form at corners, edges, and center of the triangular film sample, respectively. The morphological characteristics, transition behaviors, and formation mechanisms of such multimode wrinkles are investigated by the experiment, stress theory, and finite element simulation. The frictional and optical performances are obviously anisotropic at the corners and edges, but are isotropic in the center, exhibiting a strong dependence on the wrinkle features. The diffraction properties of light are also well tuneable by exerting mechanical strains. This study helps better understand the wrinkle patterns under three-axial strain and provides a novel way to tailor multimode wrinkles for practical applications.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Retraction of “Three-Axial Strain-Triggered Multimode Wrinkles with Tuneable Frictional and Optical Performances”

Wang

et al. 2023

ACS Appl. Mater. Interfaces

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“…As shown in Figure 1d, the iridescent colors still emit from the front of as-prepared Gra-Au NGs photodetector array, which are structural colors generated by the diffraction grating effect of Au NGs. [35,36] The structural colors are correlative with the grating quality, therefore, the iridescent emission reveals the intact structure of Au NGs after the device fabrication. [37] The scanning electron microscope (SEM) image of Gra-Au NGs in Figure 1e supports this observation.…”

Section: Resultsmentioning

confidence: 99%

Wafer‐Scale Fabrication of Graphene‐Based Plasmonic Photodetector with Polarization‐Sensitive, Broadband, and Enhanced Response

Fan

Sun

Shi

et al. 2023

Advanced Optical Materials

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Graphene‐based photodetectors draw tremendous interests for broadband photodetection in optical communications, sensing, and hyperspectral imaging. However, the extremely low light absorption coefficient of graphene posts a great challenge for high‐efficiency photodetection. Although plasmonic nanostructures provide resonant absorption enhancement and impressive responsivity, the current fabrication techniques suffer from being time‐consuming, low‐yield, and potentially high‐cost. In this work, a wafer‐scale graphene‐Au nanogratings (Gra‐Au NGs) plasmonic photodetector array is fabricated via two‐beam holographic lithography, which achieves a photosensitive area of 1 mm2, showing balanced abilities of polarization‐sensitive, broadband, and enhanced photoresponse from visible to near‐infrared regions. The maximum polarization extinction ratio and responsivity of the Gra‐Au NGs photodetector reach 6.65 and 2.95 mA W−1. The surface plasmon resonance of Au NGs and near‐field coupling with graphene render strong electric field confinement and enhanced light absorption, which improve the device photoresponse and polarization sensitivity. The hot electrons generation and transportation models in the Gra‐Au NGs heterojunction are proposed, perfectly matching with the photocurrent mapping and equalized energy band distribution. This work enlightens the wafer‐scale fabrication of graphene‐based plasmonic photodetectors, and it can trigger the advances of free‐space detection, such as remote sensing and satellite communication.

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Harnessing multimodal wrinkle patterns in flexible films by three-axial mechanical loading

Wang,

et al. 2024

Extreme Mechanics Letters

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Multi-responsive, flexible, and structurally colored film based on a 1D diffraction grating structure

Cited by 8 publications

References 33 publications

Retraction of “Three-Axial Strain-Triggered Multimode Wrinkles with Tuneable Frictional and Optical Performances”

Retraction of “Three-Axial Strain-Triggered Multimode Wrinkles with Tuneable Frictional and Optical Performances”

Wafer‐Scale Fabrication of Graphene‐Based Plasmonic Photodetector with Polarization‐Sensitive, Broadband, and Enhanced Response

Harnessing multimodal wrinkle patterns in flexible films by three-axial mechanical loading

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