Revealing invisible photonic printing: colorful pattern shown by water

C, Chen; Dong, Zhi; Chen, Y; Hu, Xiaobing; Zhu, X.; Zhu, Zhigang; Qian, Sheng; Shih, Wei‐Heng

doi:10.1088/1757-899x/167/1/012073

Cited by 4 publications

(6 citation statements)

References 24 publications

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“…Similarly, a range of optical devices can be designed and developed using the material’s response to environmental stimuli to produce volume changes that alter the crystal plane spacing of 2D photonic crystals. Chen et al (2017b) prepared a two-dimensional photonic crystal film material for invisible markers, as shown in Figure 12 , which can be used for controlled color development or anti-counterfeit printing by not only going from transparent to visible, but also revealing pre-printed patterns when wetted with water. Dalstein et al (2016) developed a soft lithography method for fabricating two-dimensional photonic structures of submicron metal-organic backbones (MOF).…”

Section: Current Status Of Research In Micro-nano Opticsmentioning

confidence: 99%

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The Development and Progression of Micro-Nano Optics

et al. 2022

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Micro-Nano optics is one of the most active frontiers in the current development of optics. It combines the cutting-edge achievements of photonics and nanotechnology, which can realize many brand-new functions on the basis of local electromagnetic interactions and become an indispensable key science and technology of the 21st century. Micro-Nano optics is also an important development direction of the new optoelectronics industry at present. It plays an irreplaceable role in optical communication, optical interconnection, optical storage, sensing imaging, sensing measurement, display, solid-state lighting, biomedicine, security, green energy, and other fields. In this paper, we will summarize the research status of micro-nano optics, and analyze it from four aspects: micro-nano luminescent materials and devices, micro-nano optical waveguide materials and devices, micro-nano photoelectric detection materials and devices, and micro-nano optical structures and devices. Finally, the future development of micro-nano optics will be prospected.

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Section: Current Status Of Research In Micro-nano Opticsmentioning

confidence: 99%

“… 2D-PC material with invisible markings: (A) colorless and transparent when dehydrated; (B) PC film with blue and green when rehydrated; (C) colorless and transparent when dehydrated; (D) The PC film turned green while the printed part showed red ( Chen et al, 2017b ). …”

Section: Current Status Of Research In Micro-nano Opticsmentioning

confidence: 99%

The Development and Progression of Micro-Nano Optics

et al. 2022

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“…The most suitable methods for creating invisible photonic patterns can be divided into two categories. [23] One is the selective fixation method, widely used to fabricate invisible photonic patterns displayed in applied stress, [17,24] solvents, [25,26] or magnetic fields. [15,27] These invisible patterns are usually achieved by fixing selective regions of the responsive PC materials with the help of cross-linkers.…”

Section: Dual Optical Information-encrypted/decrypted Invisible Photonic Patterns Based On Controlled Wettabilitymentioning

confidence: 99%

Dual Optical Information‐Encrypted/Decrypted Invisible Photonic Patterns based on Controlled Wettability

Pan

Wang

et al. 2021

Advanced Optical Materials

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Invisible photonic patterns based on responsive photonic crystals show great potential in structural‐color encryption. However, single inherent information (structural color) encryption/decryption means and the incomplete invisibility in normal conditions greatly limit further development in high‐precision encryption. Here, a novel invisible photonic pattern encrypted/decrypted by dual optical information (structural color and brightness) is reported. It is prepared by engineering an extremely large wettability difference into the patterned and unpatterned regions of a vapor‐responsive inverse opal film. The same optical properties and the distinct wettability difference between the two regions not only ensure that the pattern encrypted by structural color and brightness in the normal state can be entirely hidden under the microscope, but also ensure that it can be decoded by large color contrast (Δλ = 26–32 nm) and brightness contrast (ΔB = 48–57.6) under flowing water vapor state. The unique invisible photonic pattern, reported for the first time, can inject new life into structural color‐based encryption.

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“…A typical self-assembly method to build nanospheres with wellcontrolled architectures into ordered 3D CPC structure is the solvent evaporation method. 33 Such assemblies can be disturbed by even low concentrations of ionic impurities due to the weak interparticle force between the colloids. A strengthening strategy is embedding colloidal nanospheres in hydrogels, which also makes the shape more flexible.…”

Section: ■ Introductionmentioning

confidence: 99%

Copper Ion Imprinted Hydrogel Photonic Crystal Sensor Film

Wang

Chu

Huang

et al. 2022

ACS Appl. Polym. Mater.

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An ion-imprinted photonic crystal (IIPC) sensor for visual detection of copper ions was prepared by the combination of ion-imprinting polymer and colloidal photonic crystal (CPC) structure. Monodisperse polystyrene (PS) colloidal nanospheres synthesized by the boiling soap-free emulsion polymerization method were used to prepare the CPC template by the solvent evaporation method. An ion-imprinted polymer based on poly(vinyl alcohol) and chitosan (PVA/CS) is infiltrated therein. The IIPC sensor film was then prepared by solventassisted freeze−thaw method while the CPC template was strengthened as the air pores of the template were replaced by PVA/CS hydrogel. The shift of the diffraction wavelength can be directly observed by the naked eye through the color change of the IIPCS according to the concentration change of copper ion. Such sensor film showed good selectivity and sensitivity with a lower detection limit of 10 −4 M.

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Revealing invisible photonic printing: colorful pattern shown by water

Cited by 4 publications

References 24 publications

The Development and Progression of Micro-Nano Optics

The Development and Progression of Micro-Nano Optics

Dual Optical Information‐Encrypted/Decrypted Invisible Photonic Patterns based on Controlled Wettability

Copper Ion Imprinted Hydrogel Photonic Crystal Sensor Film

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