Mechanoluminescent functional devices: Developments, applications and prospects

Nano Energy, Journal Year: 2024, Volume and Issue: 122, P. 109325 - 109325

Published: Jan. 23, 2024

Language: Английский

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Charge carrier trapping management in Bi3+ and lanthanides doped Li(Sc,Lu)GeO4 for x-ray imaging, anti-counterfeiting, and force recording

Applied Physics Reviews, Journal Year: 2024, Volume and Issue: 11(1)

Published: Feb. 21, 2024

Discovering energy storage materials with rationally controlled trapping and de-trapping of electrons holes upon x-rays, UV-light, or mechanical force stimulation is challenging. Such enable promising applications in various fields, for instance multimode anti-counterfeiting, x-ray imaging, non-real-time recording. In this work, photoluminescence spectroscopy, the refined chemical shift model, thermoluminescence studies will be combined to establish vacuum referred binding (VRBE) diagrams LiSc1−xLuxGeO4 family compounds containing level locations Bi2+, Bi3+, lanthanides. The established VRBE are used develop Bi3+ lanthanides doped phosphors understand processes charge carriers physical excitation means. intensity irradiated LiSc0.25Lu0.75GeO4:0.001Bi3+,0.001Eu3+ about two times higher than that state-of-the-art phosphor BaFBr(I):Eu2+. Particularly, a induced carrier phenomenon appears Eu3+ co-doped LiSc1−xLuxGeO4. Proof-of-concept recording, imaging demonstrated. This work not only deepens our understanding capturing sources, but can also trigger scientists discover new by exploiting VRBEs bismuth lanthanide levels.

Language: Английский

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Mechanoluminescence and Mechanical Quenching of Afterglow Luminescent Particles for Wearable Photonic Display

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(23)

Published: Feb. 9, 2024

Abstract Optical properties of afterglow luminescent particles (ALPs) in mechanoluminescence (ML) and mechanical quenching (MQ) have attracted great attention for diverse technological applications. However, these unique phenomena need to be more clearly explained the specific photonic application. Here, ALPs are designed development a wearable rewritable display system as communication toolbox under dark conditions or underwater environments with limited communication. This demonstrates long‐lasting MQ after short ML along handwritten trajectories pressure written content can easily erased by UV light irradiation, preserving integrity high reproducibility responses. The effect trapped electrons recharging process on is assessed, which provides insights into their underlying mechanisms. In addition, this exhibits remarkable resistance humidity retains its capabilities long‐term period. Furthermore, property human skin demonstrated, confirming effectiveness system. Taken together, research will pave big new avenue develop biophotonic materials various biomedical applications mechano‐optical conversions.

Language: Английский

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Self‐Recoverable, Highly Repeatable, and Thermally Stable Mechanoluminescence for Dual‐Mode Information Storage and Photonic Skin Applications

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(32)

Published: April 2, 2024

Abstract Mechanically driven light generation is an intriguing phenomenon holding great promise in various fields. However, the existing mechanoluminescence (ML) materials always suffer from poor self‐recoverability, low repeatability, and environmental disturbance, severely hindering their practical applications. In this work, a self‐activating ML system based on interfacial triboelectrification created by compositing Ca 6 BaP 4 O 17 :0.02Ce 3+ powders into flexible polydimethylsiloxane (PDMS) matrix. With no need for pre‐irradiation, composite film emits self‐charging simultaneously response to rubbing or stretching stimuli. Accordingly, /PDMS exhibits desirable self‐recovery repeatable performance, which could still be recorded (or observed naked eyes) even after ca. 1000 cycles with fast period of < 0.1 s. Furthermore, possesses good thermal stability temperature range 298 473 K. The developed applicable fields, dual‐mode information storage photonic skin devices are as representatives. Compared oxide‐based (the signal disappears only several tens rapid mechanics cycles), work breaks through bottleneck issues stability, significantly advances field.

Language: Английский

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Microstrain‐Stimulated Elastico‐Mechanoluminescence with Dual‐Mode Stress Sensing

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(26)

Published: April 10, 2024

Abstract Elastico‐mechanoluminescence technology has shown significant application prospects in stress sensing, artificial skin, remote interaction, and other research areas. Its progress mainly lies realizing visualization 2D or even 3D stress‐sensing effects using a passive sensing mode. However, the widespread promotion of mechanoluminescence (ML) is hindered by issues such as high strain thresholds single mode based on luminous intensity. In this study, highly efficient green‐emitting ML with dual‐mode characteristics driven microscale developed LiTaO 3 :Tb 3+ . addition to single‐mode intensity, self‐defined parameter ( Q ) also introduced factor for velocity. Impressively, fabricated film capable generating discernible signals when supplied strains low 500 µst. This current minimum value that can drive ML. study offers an ideal photonic platform exploring potential applications rare‐earth‐doped elastico‐ML materials interaction devices, high‐precision sensors, single‐molecule biological imaging.

Language: Английский

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