Mechanoluminescence Rebrightening the Prospects of Stress Sensing: A Review

Advanced Materials, Journal Year: 2021, Volume and Issue: 33(50)

Published: March 30, 2021

Abstract The emergence of new applications, such as in artificial intelligence, the internet things, and biotechnology, has driven evolution stress sensing technology. For these emerging stretchability, remoteness, distribution, a multimodal nature, biocompatibility are important performance characteristics sensors. Mechanoluminescence (ML)‐based attracted widespread attention because its remoteness having distributed response to mechanical stimuli well great potential for biocompatibility, self‐powering. In past few decades, progress been made discovery ML materials, analysis mechanisms, design devices, exploration applications. One can find that with this progress, focus research shifted from phenomenon earliest stage materials recently toward devices. At present stage, while showing prospects advanced ML‐based still faces major challenges material optimization, device design, system integration.

Language: Английский

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Piezoelectric materials for flexible and wearable electronics: A review

Materials & Design, Journal Year: 2021, Volume and Issue: 211, P. 110164 - 110164

Published: Oct. 12, 2021

Self-powered devices and micro-sensors are in high demand for intelligent electronics flexible wearables applications medical healthcare human–computer interactive robotics. Flexible, stretchable, wearable breathable high-sensitivity sensors that monitor signals from subtle changes the environment provide solutions personalized healthcare. In this article, we review fundamental mechanisms, theoretical research, sensor fabrication methodologies, of piezoelectric materials. We focus on flexibility stretchability inorganic, polymer, bio-piezoelectric materials, explain their properties physiological signal monitoring, motion detection, force sensing. an overview latest progress piezoelectronics photonics, structures devices, self-powering technologies. compared 10 types polymers composites with human skin terms elastic modulus found PLLA/PDMS, electro-spun PVDF, ZnO/PVDF possess higher (50, 500, 27900 MPa respectively) than (18.8 MPa), thus being more suitable devices. electrical outputs polarized cast film has stronger property output 14–45.6 V filaments material (output 0.4–9 V). Future research development should increasing performance while maintaining required durability.

Language: Английский

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Self‐Recoverable Mechanically Induced Instant Luminescence from Cr³⁺‐Doped LiGa₅O₈

Advanced Functional Materials, Journal Year: 2021, Volume and Issue: 31(19)

Published: March 3, 2021

Abstract Currently, most of the mechanoluminescence (ML) phosphors strongly depend on postirradiation stimulation using ultraviolet light (denoted as “UV exposure” from hereon) to show ML. However, only a few transition metal cations are proven be effective luminescence centers, which hinder development more ML phosphors. This study reports self‐recoverable deep‐red‐to‐near‐infrared Cr 3+ ‐doped LiGa 5 O 8 phosphor with fully recoverable performance. The performance can further optimized by tuning trap redistributions codoping Al and cations. Theoretical calculations reveal important role dopants in modulation local electronic environments for achieving Owing induced interelectronic levels shallow electron distributions, recombination efficiency is enhanced both through direct tunneling energy transfer toward dopant levels. Moreover, penetrate 2‐mm‐thick pork slice, showing that it have wide‐ranging vivo applications, including optical imaging intracorporal stress/strain distribution dynamics. Therefore, this work fabricates novel material an extended wavelength range, increasing number potential candidates promoting fundamental understanding practical applications materials.

Language: Английский

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Smart Mechanoluminescent Phosphors: A Review of Strontium‐Aluminate‐Based Materials, Properties, and Their Advanced Application Technologies

Advanced Science, Journal Year: 2022, Volume and Issue: 10(3)

Published: Nov. 13, 2022

Mechanoluminescence, a smart luminescence phenomenon in which light energy is directly produced by mechanical force, has recently received significant attention because of its important applications fields such as visible strain sensing and structural health monitoring. Up to present, hundreds inorganic organic mechanoluminescent materials have been discovered studied. Among them, strontium-aluminate-based are an class for fundamental research practical attributed their extremely low force/pressure threshold mechanoluminescence, efficient photoluminescence, persistent afterglow, relatively synthesis cost. This paper presents systematic comprehensive review luminescent materials' mechanoluminescence phenomena, mechanisms, material techniques, related applications. Besides summarizing the early latest on this system, outlook provided environmental, issue future wearable devices, advanced energy-saving lighting displays.

Language: Английский

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Achieving Remote Stress and Temperature Dual‐Modal Imaging by Double‐Lanthanide‐Activated Mechanoluminescent Materials

Advanced Functional Materials, Journal Year: 2021, Volume and Issue: 31(25)

Published: April 9, 2021

Abstract Mechanoluminescence (ML) is one of the most important routes to realize remote sensing stress distribution, but has never been used in temperature sensing. Traditionally, and are separately realized through different methods multifunctional sensors, which definitely makes structure more complicated. In this work, stress–temperature dual‐modal proposed by using double‐lanthanide‐activated ML material SrZnSO:Tb,Eu, where read integral intensity displayed green red emission ratio ( I Tb / Eu ) material. The dual mode SrZnSO:Tb,Eu enables building a new imaging system, providing facile, reliable, sensitive way remotely visualize distribution temperature. It opens up novel approach develop advanced artificial skins with simplified structures human–machine interfaces, structural health monitoring, biomedical engineering applications.

Language: Английский

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Expanding the Toolbox of Inorganic Mechanoluminescence Materials

Accounts of Materials Research, Journal Year: 2021, Volume and Issue: 2(5), P. 364 - 373

Published: April 2, 2021

ConspectusMechanoluminescence is a process of light emission from materials in response to external mechanical actions. As energy ubiquitously available nature, mechanoluminescence can provide sustainable solutions challenging problems the fields biology and optoelectronics as well environmental sciences. In particular, remote delivery through also be achieved by noncontact forces ultrasonic waves magnetic fields, which enables noninvasive diagnosis therapy biomedical applications. Owing well-recognized merits, research has evolved into highly interdisciplinary field, turn inspired considerable interest development novel devices for boosting performances such brightness, repeatability, spectral tunability.Mechanoluminescence was originally observed processes associated with fracture plastic deformation materials, are characterized inefficient nonreproducible emissions. Therefore, current mainly directed repeatable elastic continuous generation light. Such elastico-mechanoluminescence primarily host piezoelectricity doped activator ions manganese lanthanide. Upon application stress, piezoelectric hosts establish internal electric that trigger electronic transitions between dopant-associated levels, eventually giving rise emissions dopant ions. On basis learned knowledge, various host/dopant combinations have been synthesized tested past few years. Meanwhile, composite structures incorporated designed an efficient under different forms actions, compressing, stretching, rubbing.The significant progress study generated new opportunities fundamental technological To inspire guide further investigations this we systematically review emerging systems their frontier We focus on identified render bright deliberately controlled characteristics, along analysis structure–property relationship these materials. discuss innovative methodologies translating cutting-edge device applications precisely controlling interaction surrounding environments. attempt rationale behind developments, simultaneously highlight future challenges mechanoluminescence.

Language: Английский

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Mechanoluminescence and Photoluminescence Heterojunction for Superior Multimode Sensing Platform of Friction, Force, Pressure, and Temperature in Fibers and 3D‐Printed Polymers

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(40)

Published: July 3, 2023

Endowing a single material with various types of luminescence, that is, exhibiting simultaneous optical response to different stimuli, is vital in fields. A photoluminescence (PL)- and mechanoluminescence (ML)-based multifunctional sensing platform built by combining heterojunctioned ZnS/CaZnOS:Mn2+ mechano-photonic materials using 3D-printing technique fiber spinning. ML-active particles are embedded micrometer-sized cellulose fibers for flexible devices capable emitting light driven mechanical force. Individually modified 3D-printed hard units exhibit intense ML deformation, such as impact friction, also fabricated. Importantly, they allow low-pressure up ≈100 bar, range previously inaccessible any other technique. Moreover, the developed manometer based on PL demonstrates superior high-pressure sensitivity ≈6.20 nm GPa-1 . Using this platform, four modes temperature detection can be achieved: excitation-band spectral shifts, emission-band bandwidth broadening, lifetime shortening. This work supports possibility mass production optoelectronic parts integrated scientific industrial tools apparatus.

Language: Английский

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Bimodal Tactile Sensor without Signal Fusion for User-Interactive Applications

ACS Nano, Journal Year: 2022, Volume and Issue: 16(2), P. 2789 - 2797

Published: Jan. 21, 2022

Tactile sensors with multimode sensing ability are cornerstones of artificial skin for applications in humanoid robotics and smart prosthetics. However, the intuitive interference-free reading multiple tactile signals without involving complex algorithms calculations remains a challenge. Herein pressure–temperature bimodal sensor any interference is demonstrated by combining fundamentally different mechanisms optics electronics, enabling simultaneous independent pressure temperature elimination signal separation calculations. The comprises mechanoluminescent hybrid ZnS–CaZnOS poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) thermoresistant material, endowing unambiguous transduction into optical electrical signals, respectively. This device exhibits highest sensitivity −0.6% °C–1 range 21–60 °C visual applied forces at low limitation 2 N. light-emitting characteristics this permit user-interactive encrypted communication as well monitoring, along wireless transmission. work provides an unexplored solution to multimodal sensors, which can be extended other multifunctional devices.

Language: Английский

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Hardware Technology of Vision-Based Tactile Sensor: A Review

IEEE Sensors Journal, Journal Year: 2022, Volume and Issue: 22(22), P. 21410 - 21427

Published: Oct. 4, 2022

A vision-based tactile sensor (VBTS) is an innovative optical widely applied in robotic perception. The VBTS consists of a contact module, illumination and camera module. Its hardware technologies contain preparation, performance, functions, materials, optimization design components. However, the current literature lacks review to formulate complete manufacturing scheme. Therefore, this article focuses on reviewed over past five years. We analyze core components each module sort out technical route. challenges problems are discussed propose some feasible solutions. Considering cross-disciplinary applications, we think that multidisciplinary expected promote development next-generation VBTSs. In addition, aim provide valuable guideline for developers improve performance

Language: Английский

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Visualizing Dynamic Mechanical Actions with High Sensitivity and High Resolution by Near‐Distance Mechanoluminescence Imaging

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(36)

Published: July 12, 2022

Proportionally converting the applied mechanical energy into photons by individual mechanoluminescent (ML) micrometer-sized particles opens a new way to develop intelligent electronic skins as it promises high-resolution stress distribution visualization and fast response. However, big challenge for ML sensing technology is its low sensitivity in detecting stress. In this work, novel sensor with detection enhanced two orders of magnitude developed combining proposed near-distance imaging scheme an improved mechano-to-photon convertor. The main contributor realization maximum photon harvesting rate ≈80% scheme. shows high limit down ≈kPa level, spatial resolution 254 dpi, response interval 3.3 ms, which allows real-time complex actions such irregular solid contacts or fluid impacts, thus enables use skin, structural health monitoring, human-computer interaction.

Language: Английский

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