Mechanics-induced triple-mode anticounterfeiting and moving tactile sensing by simultaneously utilizing instantaneous and persistent mechanoluminescence

Ma, Zhidong; Zhou, Jinyu; Zhang, Jiachi; Zeng, Songshan; Zhou, Hui; Smith, Andrew T.; Sun, Luyi; Wang, Zhaofeng

doi:10.1039/c9mh01028a

Cited by 101 publications

(69 citation statements)

References 53 publications

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“…4e. Upon irradiation by UV light, the electrons are first promoted to Mn-O CTB, delocalized to the CB of the host via photoionization and then are captured by traps with a continuous energy distribution 53 . A small part of electrons in shallow traps is soon depleted after ceasing the excitation source, producing PersL.…”

Section: Psl Performance and Mechanismmentioning

confidence: 99%

High-security-level multi-dimensional optical storage medium: nanostructured glass embedded with LiGa5O8: Mn2+ with photostimulated luminescence

Lin

et al. 2020

Light Sci Appl

160

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The launch of the big data era puts forward challenges for information preservation technology, both in storage capacity and security. Herein, a brand new optical storage medium, transparent glass ceramic (TGC) embedded with photostimulated LiGa 5 O 8 : Mn 2+ nanocrystals, capable of achieving bit-by-bit optical data write-in and read-out in a photon trapping/detrapping mode, is developed. The highly ordered nanostructure enables light-matter interaction with high encoding/decoding resolution and low bit error rate. Importantly, going beyond traditional 2D optical storage, the high transparency of the studied bulk medium makes 3D volumetric optical data storage (ODS) possible, which brings about the merits of expanded storage capacity and improved information security. Demonstration application confirmed the erasable-rewritable 3D storage of binary data and display items in TGC with intensity/ wavelength multiplexing. The present work highlights a great leap in photostimulated material for ODS application and hopefully stimulates the development of new multi-dimensional ODS media.

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Section: Psl Performance and Mechanismmentioning

confidence: 99%

High-security-level multi-dimensional optical storage medium: nanostructured glass embedded with LiGa5O8: Mn2+ with photostimulated luminescence

Lin

et al. 2020

Light Sci Appl

160

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“…Based on the category of regulation factors, multilevel luminescence anti‐counterfeiting can be divided into five types: (1) regulated by excitation light; [ 64–80 ] (2) co‐regulated by excitation light and luminescence lifetime; [ 81–92 ] (3) co‐regulated by excitation light and heat stimuli; [ 35,63,93–96 ] (4) co‐regulated by excitation light and chemical reagents; [ 16,97–105 ] and (5) co‐regulated by other factors. [ 106–121 ]…”

Section: Multilevel Luminescence Anti‐counterfeitingmentioning

confidence: 99%

Luminescence anti‐counterfeiting: From elementary to advanced

2021

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Luminescence anti‐counterfeiting derives from the easily changeable luminescence behaviors of luminescence materials under the regulation of various external stimuli (such as excitation light, chemical reagent, heat, and mechanical force, etc.) and luminescence lifetime, which plays an important role in preventing forgery of currency, artworks, and product brands. According to the numbers of changes of anti‐counterfeiting labels under various regulation conditions, luminescence anti‐counterfeiting can be classified into three levels from elementary to advanced: single‐level anti‐counterfeiting, double‐level anti‐counterfeiting, and multilevel anti‐counterfeiting. In this review, the recent achievements in luminescence anti‐counterfeiting are summarized, and the regulation of various factors to anti‐counterfeiting labels is discussed. Finally, existing problems, future challenges, and possible development directions are proposed in order to realize facile, quick, low‐cost, environmentally friendly, and difficult‐to‐replicate advanced luminescence anti‐counterfeiting.

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“…Mechanoluminescence (ML) materials featuring photon emission under mechanical stimuli have attracted the attention of material scientists, physicists and engineers 1 – 6 due to their promising applications in structure damage diagnosis platforms, E-signature systems, artificial skins and optical anti-counterfeiting devices 7 – 12 . By using photons as mediators, ML materials could enable remote stress sensing (no contact between the pressed units and detectors) 13 , 14 as well as distributed monitoring for large-scale surfaces or complex interfaces 15 , 16 , which are still great challenges for conventional stress sensing methods based on the piezoelectric effect and resistance or capacitance changes.…”

Section: Introductionmentioning

confidence: 99%

Force-induced charge carrier storage: a new route for stress recording

Zhuang

Chen

et al. 2020

Light Sci Appl

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Stress sensing is the basis of human-machine interface, biomedical engineering, and mechanical structure detection systems. Stress sensing based on mechanoluminescence (ML) shows significant advantages of distributed detection and remote response to mechanical stimuli and is thus expected to be a key technology of next-generation tactile sensors and stress recorders. However, the instantaneous photon emission in ML materials generally requires real-time recording with a photodetector, thus limiting their application fields to real-time stress sensing. In this paper, we report a force-induced charge carrier storage (FICS) effect in deep-trap ML materials, which enables storage of the applied mechanical energy in deep traps and then release of the stored energy as photon emission under thermal stimulation. The FICS effect was confirmed in five ML materials with piezoelectric structures, efficient emission centres and deep trap distributions, and its mechanism was investigated through detailed spectroscopic characterizations. Furthermore, we demonstrated three applications of the FICS effect in electronic signature recording, falling point monitoring and vehicle collision recording, which exhibited outstanding advantages of distributed recording, long-term storage, and no need for a continuous power supply. The FICS effect reported in this paper provides not only a breakthrough for ML materials in the field of stress recording but also a new idea for developing mechanical energy storage and conversion systems.

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Mechanics-induced triple-mode anticounterfeiting and moving tactile sensing by simultaneously utilizing instantaneous and persistent mechanoluminescence

Abstract: An intriguing mechanics-induced triple-mode anticounterfeiting device and a moving tactile sensor were developed by simultaneously utilizing transient and persistent mechanoluminescence.

Cited by 101 publications

References 53 publications

High-security-level multi-dimensional optical storage medium: nanostructured glass embedded with LiGa5O8: Mn2+ with photostimulated luminescence

High-security-level multi-dimensional optical storage medium: nanostructured glass embedded with LiGa5O8: Mn2+ with photostimulated luminescence

Luminescence anti‐counterfeiting: From elementary to advanced

Force-induced charge carrier storage: a new route for stress recording

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