CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Man Wang,Jianqiang Xiao,Jian Zhang,Lei Zhao,Yingdan Song,Zhichao Liu,Ting Wang,Xuhui Xu,Jie Yu
Mechanoluminescence (ML) materials have the ability to emit light under mechanical force, allowing for visible mechanical force distribution and making them valuable for applications in smart textiles and wearable sensors. Detecting the force rate is crucial for applications, such as haptic feedback devices and mechanical monitoring, but visualizing the speed of strain has not been achieved yet. In this study, we have successfully visualized the strain rate by monitoring the ML tailing lengths of red, green, and blue (RGB) ML materials, including CaF 2 : Tm 3+ , CaF 2 : Eu 3+ , and CaF 2 : Tb 3+ phosphors. These materials exhibit varying ML tailing lengths at identical rotation speed of friction force, due to their distinct lifetime of the emitting centers. By incorporating these RGB ML phosphors into a composite film, the discrepancies in ML tailing lengths across different colors become visible, with these differences becoming more pronounced as the rotation speeds rise. Ultimately, the visualization of rotational speed in bearings was achieved successfully based on the vivid color changes in the ML tailing length at different speeds.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Lei Jiang,Yaoyu Du,Weiqiu Wu,Xinyue Zhang,Xueqiang Liu,Ning Ma,Alaa S. Abd-El-Aziz
Doped quaternary piezoelectric semiconductor materials have shown great potential in the fields of anti-counterfeiting and sensing because of their excellent bimodal luminescence properties; however, their weak mechanoluminescence (ML) has hindered their large-scale applications. In this study, a biphasic construction strategy for these materials was adopted to achieve optimized ML performance. Unlike heterojunctions synthesized with similar crystal structures, the biphasic structure reported here consists of distinct piezoelectric semiconductors, ZnS and SrZn 2 S 2 O, which belong to hexagonal and orthorhombic phases, respectively. At the optimal ratio, ML can be improved by 2-fold or greater, effectively overcoming the limitations associated with relatively weak ML. Additionally, by adjusting the Mn 2+ doping concentration within the biphasic structure, the luminescence emission range can be manipulated to achieve high-quality anti-counterfeiting applications. This biphasic-structured material, when combined with a high-transparency epoxy resin, produces arrays that can be informatively encoded when stimulated by ultraviolet (UV) light and mechanical force. Finally, the luminescence mechanism of this biphasic piezoelectric material was investigated. It is anticipated that this research will pave the way for the development of novel ML hosts with efficient emissions.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Yi-Li Peng,Qiang-Qiang Zhu,Hao-Liang Cheng,Shuang-Qiang Fang,Yue Zhai,Le Wang
Mechanoluminescent (ML) materials hold significant potential for applications in visual stress and temperature sensing. However, most studied ML materials are largely limited to trap-controlled types, which necessitate prior optical excitation for activation and require continuous optical stimulation to maintain luminescent intensity. This dependency significantly restricts their performance in practical applications. In this study, we developed self-recoverable CGO:Eu³⁺ red-emitting ML powders and combined them with green-emitting ZnS:Cu ML powders in polydimethylsiloxane (PDMS) to facilitate visualized stress and temperature sensing. The ML intensity of CGO:Eu³⁺ and ZnS:Cu demonstrates distinct trends at varying strains; thus, the CGO:Eu³⁺-ZnS:Cu composite elastomer with a CGO:Eu³⁺ to ZnS:Cu ratio (CtZ ratio) of 4:1 exhibits the most significant ML color change in response to strain variations. Additionally, the notable difference in thermal quenching performance between CGO:Eu³⁺ and ZnS:Cu powders enables the composite elastomer with a CtZ ratio of 2:1 to differentiate temperature based on changes in ML color, achieving a maximum relative sensitivity ( S r) of 2.2 % K⁻¹ at 200 °C. The composite elastomers produced exhibited ML color changes that are easily perceptible to the human eye in response to varying stress and temperature conditions, thereby making them suitable for applications in intelligent gesture recognition and temperature detection.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMISTRY OF MATERIALS
·
2016
·
IF 9.407
Jun-Cheng Zhang,Yun-Ze Long,Xu Yan,Xusheng Wang,Feng Wang
Recoverable mechanoluminescence (ML), characterized by nondestructive and repetitive luminescence in response to a mechanical stress, has shown considerable promise in a variety of practical applications including lighting and display, as well as stress sensing and imaging. However, the progress in utilizing ML processes has been constrained by the difficulties in developing new ML materials and in ascertaining ML mechanism. In this paper, we report a new strategy to constructing recoverable ML materials by doping piezoelectric hosts with luminescent lanthanide ions, which simultaneously create luminescent centers and carrier traps in the host lattice. The viability of the strategy has been confirmed by assessing a series of Pr3+ activated calcium niobates composed of mCaO·Nb2O5 (m = 1, 2, and 3). Furthermore, systematical characterizations of the series of calcium niobates also reveal an unusual host dependent ML phenomenon. Our results are expected to expand the scope of designing ML materials and to deepen our understanding of ML mechanism, thereby promoting further utilization of recoverable ML.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
Materials Horizons
·
2025
·
IF 10.7
xuesong wang,Yao Xiao,Puxian Xiong,pan zheng,Sheng Wu,Zhiyao Zhou,Binli Xiao,Peishan Shao,meihui zhang,jianhui liu,Jiulin Gan,yan qang,Qi Qian
Near infrared mechanoluminescence (NIR-ML) materials have attracted the attention of researchers due to their unique advantages, such as high resistance to bright-field interference and higher penetration depth into biological tissues. However, the reported NIR-ML materials are mainly focused on rare ion activated narrow-band emission ones. In this work, we report a NIR-ML material of BaGa12O19:Cr3+ by solid state rection method. The bright broad NIR ML (650-1000 nm) is observed at lower force loads (12N), which is based on the Cr3+ ion’s multi-lattice site occupation. After heat treatment at 573 K for 20 min, BaGa12O19:Cr3+ still maintains 84.4% of its ML intensity. Furthermore, the ML intensity of BaGa12O19:Cr3+ is also significantly improved after UV pre-irradiation. Due to the defective piezoelectric photonic effect, BaGa12O19:Cr3+ has great self-recoverable properties even in the absence of UV and sunlight irradiation. Finally, the ML penetration rate of BaGa12O19:Cr3+ has reached as high as 66.97% in biological tissues, which suggests a potential prospect for biostress detection towards bio-imaging applications.
研究领域:
材料科学
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生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Hongxin Song,Yingdan Song,Yongchun Hou,Peng Zhang,Lili Li,Jianqiang Xiao,Pengfei Zhang,Bitao Liu,Qiang Xu,Lei Zhao
Mechanoluminescent (ML) glass-ceramics, with their exceptional mechanical strength, unique force-to-light conversion properties, and optical waveguiding effect, are regarded as promising candidates for next-generation optical stress sensors. For trap-controlled ML glass-ceramics, a non-destructive and simple charging method, as opposed to high-energy radiation charging, is a crucial factor in determining their application potential. In this work, the new strategy of introducing intrinsic defects into the crystalline phase of Zn 2 SiO 4 : Ce 3 + glass-ceramics was employed to enable ML using ultraviolet (UV) light pre-irradiation, a non-destructive and convenient charging method. UV light pre-irradiation effectively fills the intrinsic point defects within the Zn 2 SiO 4 : Ce 3+ crystalline phase while preserving the glass network structure and maintaining its original transparency. Under mechanical stimulation, the release of carriers from these traps facilitates mechanical-thermal-light conversion, leading to ML. Crucially, UV light charging is both cost-effective and easily accessible, providing a novel approach to producing ML glass-ceramics that are non-destructive, safe, convenient, and affordable.
研究领域:
材料科学
·
光学工程
✓ 已验证
DOI
高影响因子
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