Ultrasensitive and robust mechanoluminescent living composites DOI Creative Commons
Chenghai Li, Nico Schramma, Zijun Wang

et al.

Science Advances, Journal Year: 2023, Volume and Issue: 9(42)

Published: Oct. 20, 2023

Mechanosensing, the transduction of extracellular mechanical stimuli into intracellular biochemical signals, is a fundamental property living cells. However, endowing synthetic materials with mechanosensing capabilities comparable to biological levels challenging. Here, we developed ultrasensitive and robust mechanoluminescent composites using hydrogels embedded dinoflagellates, unicellular microalgae near-instantaneous bioluminescent response stress. Not only did dinoflagellates retain their intrinsic mechanoluminescence, but hydrophobic coatings, had lifetime ~5 months under harsh conditions minimal maintenance. We 3D-printed large-scale structures high spatial resolution, also enhanced properties double-network hydrogels. propose counterpart mathematical model that captured experimental observations predict mechanoluminescence based on deformation applied demonstrated use for biomimetic soft actuators emitted colored light upon magnetic actuation. These have substantial potential in biohybrid sensors robotics.

Language: Английский

A broadband near-infrared nanoemitter powered by mechanical action DOI Creative Commons
Hao Suo, Yu Wang, Xin Zhang

et al.

Matter, Journal Year: 2023, Volume and Issue: 6(9), P. 2935 - 2949

Published: July 5, 2023

Language: Английский

Citations

42
Stress‐Triggered Mechanoluminescence in ZnO‐Based Heterojunction for Flexible and Stretchable Mechano‐Optics DOI
Leipeng Li, Chongyang Cai, Xiao-Huan Lv

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(32)

Published: April 26, 2023

Abstract Owing to the forthcoming global energy crisis, search for energy‐saving materials has intensified. Over past two decades, mechanically induced luminescent have received considerable attention as they can convert waste into useful components, instance, conversion from stress light. However, this material features many constraints that limit its widespread application. Herein, a strategy improve mechanoluminescence (ML) of ZnO by embedding it in ZnF 2 :Mn 2+ matrix is introduced. Upon dynamic excitation via an external stress, reddish‐yellow ML confirmed originate 4 T 1 (4G) → 6 A (6S) transition optically active Mn center. Moreover, sample with strongest contains appropriate amount (ZnF :ZnO = 7:3). By performing density functional theory calculations, possible ML‐enhancement mechanism elucidated, which indicates formation /ZnO:Mn heterojunction. Considering unique characteristics ML, promising applications are demonstrated various mechano‐optics scenarios, including flexible and stretchable optoelectronics, advanced self‐powered displays, e‐skins/e‐signatures, anti‐counterfeiting, without use light/electric‐incentive sources. The study significantly increases variety expected strengthen foundation future development smart controlled devices systems.

Language: Английский

Citations

36
Recoverable Dual-Modal Responsive Sensing Materials Based on Mechanoluminescence and Thermally Stimulated Luminescence toward Noncontact Tactile Sensors DOI
Na Li,

Shuaishuai Yu,

Lei Zhao

et al.

Inorganic Chemistry, Journal Year: 2023, Volume and Issue: 62(5), P. 2024 - 2032

Published: Jan. 23, 2023

Tactile sensing with stress and temperature as core elements have shown promising prospects in intelligent robots the human-machine interface. Mechanoluminescence (ML)-based can realize direct of mechanical stimulation, whereas indirect based on luminescent materials usually requires stimulation extra light or force. Herein, a trap-controlled material Sr2MgAl22O36:Mn2+ bifunctional mechano/thermal applications was developed investigated detail. Visualized bright green-emitting ML thermally stimulated luminescence (TSL) directly rapidly responded to dual Sr2MgAl22O36:Mn2+/PDMS composite film. It is worth mentioning that this study proposed new idea by initial intensity TSL due thermal-photo energy conversion, unlike previous sensor technology. Based this, we designed flexible optical skin simple structure verified its application prospect tactile response, establishing unique imaging mode providing convenient, reliable, sensitive way remotely visualize distribution temperature. This paves for development skins structures visibility robot sensing.

Language: Английский

Citations

32
Revealing the Intrinsic Decay of Mechanoluminescence for Achieving Ultrafast‐Response Stress Sensing DOI
Changjian Chen,

Zhu Lin,

Honghui Huang

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(46)

Published: July 8, 2023

Abstract Converting mechanical energy into photon emission provides a promising route for intelligent sensing, self‐powered lighting, and distributed harvesting, which is of great significance finding feasible solution to the current sensing technical bottleneck crisis. As basis understanding conversion mechanism realizing high‐frequency utilization, elucidating dynamic process intensity variation in mechano‐to‐photon remains challenge. Herein, time‐domain characterization scheme that enables unravel intrinsic decay mechanoluminescence (ML) with lifetimes from milliseconds down tens microseconds constructed. It demonstrated ML an important tool reveal dynamics charge migration materials. The typical self‐reproducible material ZnS:Mn 2+ shows temperature dependence stress fluctuation resistance, opens up new reliable approach remote sensing. Finally, benefiting shortest lifetime recorded date, ultrafast‐response sensor detect individual pulses ultrasonic waves technology developed.

Language: Английский

Citations

32
Unraveling Mechanoluminescent Mechanisms in Doped CaZnOS Materials: Co‐Mediation of Trap‐Controlled and Non‐Trap‐Controlled Processes DOI Open Access
Li Wei, Yiyu Cai,

Jianqing Chang

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(48)

Published: July 17, 2023

Abstract Doped CaZnOS materials show great potential for mechanoluminescence (ML) applications spanning the ultraviolet‐visible‐near infrared (UV–vis–NIR) range. However, conflicting reports regarding generation and reproducibility of ML hinder understanding practical utilization these materials. To address this issue, a comprehensive characterization strategy combining NIR laser‐assisted de‐trapping, UV irradiation‐induced trap‐filling, in situ mechanical stimulation, continuous recording is proposed. Herein, behaviors four representative doped (Mn 2+ , Bi 3+ Er Ce ) are investigated using approach. The results reveal that de‐trapped exhibit non‐trap‐controlled ML, wherein intensity gradually weakens under successive stimuli without self‐recovery. In contrast, trap‐filled demonstrate both trap‐controlled with former predominantly contributing to overall intensity. Notably, shows only partial recovery after trap filling. attributed plastic destructive phenomena, while explaining through carrier de‐trapping model. These not clarify but also provide clear insights into properties mechanisms CaZnOS‐based materials, facilitating advancements applications. Furthermore, developed expected serve as valuable reference establishing standardized protocols evaluate performance.

Language: Английский

Citations

28
Defect-management-induced multi-stimulus-responsive mechanoluminescence in Mn2+ doped gallate compound DOI
Yao Xiao, Puxian Xiong,

Yakun Le

et al.

Nano Energy, Journal Year: 2023, Volume and Issue: 120, P. 109086 - 109086

Published: Nov. 14, 2023

Language: Английский

Citations

26
Liquid Nitrogen Temperature Mechanoluminescence and Persistent Luminescence DOI
Xueqing Liu, Liangliang Zhang, Dandan Wang

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(46)

Published: Aug. 3, 2023

Abstract As novel stress‐sensing materials, the reported mechanoluminescence (ML) phosphors work only at or above room temperature. Herein, ML response to low temperatures (77 K) is extended by employing ultra‐shallow traps. Strong stimulated handwriting force followed persistent luminescence observed in BaSi 2 O N :Eu 2+ (BSON) 77 K. The UV pre‐irradiated BSON can still keep characteristics of with 45% intensity after 300 min. Abundant traps depth ≈0.19 eV are found and revealed be responsible for low‐temperature luminescence. Manipulation realized doping Ge, Er, Ce ions BSON, leading significant enhancement Together ML, also exhibit memory ability replicate pre‐applied pattern simply afterglow. finding advances state‐of‐the‐art sensing under temperature conditions.

Language: Английский

Citations

24
Interfacial Triboelectricity Lights Up Phosphor‐Polymer Elastic Composites: Unraveling the Mechanism of Mechanoluminescence in Zinc Sulfide Microparticle‐Embedded Polydimethylsiloxane Films DOI
Gyudong Lee, Seongkyu Song, Woo Hyeon Jeong

et al.

Small, Journal Year: 2024, Volume and Issue: 20(17)

Published: Jan. 7, 2024

Abstract Composites comprising copper‐doped zinc sulfide phosphor microparticles embedded in polydimethylsiloxane (ZnS:Cu–PDMS) have received significant attention over the past decade because of their bright and durable mechanoluminescence (ML); however, underlying mechanism this unique ML remains unclear. This study reports empirical theoretical findings that confirm is an electroluminescence (EL) ZnS:Cu induced by triboelectricity generated at microparticle–PDMS matrix interface. exhibit are coated with alumina, oxide strong positive triboelectric properties; contact separation between coating PDMS, a polymer negative properties, produces sufficient interfacial to induce EL microparticles. The ZnS:Cu–PDMS composites varies on changing material, exhibiting intensity proportional amount system. Finally, based these findings, explains phosphor–polymer elastic (interfacial field‐driven alternating‐current model) proposed study. It believed understanding will enable development new materials (beyond systems) ML.

Language: Английский

Citations

15
MXene‐Based Pressure Sensor with a Self‐Healing Property for Joule Heating and Friction Sliding DOI
Yu Chen, Mengyao Gao, Kun Chen

et al.

Small, Journal Year: 2024, Volume and Issue: 20(33)

Published: March 26, 2024

As a kind of flexible electronic device, pressure sensor has attracted wide attention in medical monitoring and human-machine interaction. With the continuous deepening research, high-sensitivity is developing from single function to multi-function. However, Current multifunctional sensors lack ability integrate joule heating, detect sliding friction, self-healing. Herein, MXene/polyurethane (PU) with self-healing property for heating friction fabricated. The MXene/PU sensitive layer special spinosum structure prepared by simple spraying method. After face-to-face assembly layers, obtained showed excellent sensitivity (150.65 kPa

Language: Английский

Citations

12
Indirect evidence of Bi3+ valence change and dual role of Bi3+ in trapping electrons and holes for multimode X-ray imaging, anti-counterfeiting, and non-real-time force sensing DOI
Tianshuai Lyu, P. Dorenbos, Zhanhua Wei

et al.

Acta Materialia, Journal Year: 2024, Volume and Issue: 273, P. 119953 - 119953

Published: April 22, 2024

Language: Английский

Citations

12