Chemical & Biomedical Imaging
·
2024
·
IF 0
Li Zhao,Tianjian Sha,Yufu Liu,Qingsong Mei,Haibin Li,Pinghua Sun,Haibo Zhou,Huaihong Cai
The large-scale preparation of fluorescent nanomaterials with laboratory-relevant chemical and optical properties will greatly forward their consumer market applications; however, it still remains challenging. In this work, a universal strategy was developed for the rapid and large-scale synthesis of fluorescent sulfur quantum dots that recently has drawn great attention because of their unique optical characteristics. From the fact that empty 3d orbitals of sulfide species are able to bind with lone-pair π electrons of the heteroatomic groups, many amino-group containing compounds, such as amino acid and polyethylenimine molecules, were exploited to synthesize sulfur quantum dots. This 10 min preparation period endowed sulfur quantum dots with bright blue fluorescence and also chirality. Due to the user-friendly and rapid operation, this strategy can be extended to the large-scale synthesis of sulfur quantum dots with a yield of 16.844 g for one batch of experiment. Moreover, it was found that the sulfur quantum dots exhibited a reversible temperature-dependent luminescent property with a sensitivity of 0.72%/°C, which showed excellent intracellular temperature monitoring capability for inflammation-related disease diagnostics.
研究领域:
材料科学
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生物医学工程
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纳米技术
✓ 已验证
DOI
Polymers
·
2024
·Vol. 16
·期 21
·2987
·
IF 4.7
Yuxin Wang,Yuan Meng,Jin Ning,Peike Wang,Yang Ye,Jingjing Luo,Ao Yin,Zhongqi Ren,Haipeng Liu,Xue Qi,Sisi He,Suzhu Yu,Jun Wei
Electronic skin capable of reliable monitoring of human skin temperature is crucial for the advancement of non-invasive clinical biomonitoring, disease diagnosis, and health surveillance. Ultra-thin temperature sensors, with excellent mechanical flexibility and robustness, can conformably adhere to uneven skin surfaces, making them ideal candidates. However, achieving high sensitivity often demands sacrificing flexibility, rendering the development of temperature sensors combining both qualities a challenging task. In this study, we utilized a low-cost drop-casting technique to print ultra-thin and lightweight (thickness: approximately 3 µm, weight: 0.61 mg) temperature sensors based on a combination of vanadium dioxide and PEDOT:PSS at room temperature and atmospheric conditions. These sensors exhibit high sensitivity (temperature coefficient of resistance: −5.11%/°C), rapid response and recovery times (0.36 s), and high-temperature accuracy (0.031 °C). Furthermore, they showcased remarkable durability in extreme bending conditions (bending radius = 400 µm), along with stable electrical performance over approximately 2400 bending cycles. This work offers a low-cost, simple, and scalable method for manufacturing ultra-thin and lightweight electronic skins for temperature monitoring, which seamlessly integrate exceptional temperature-measuring capabilities with optimal flexibility.
研究领域:
生物医学工程
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Materials Technologies
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2025
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IF 6.2
Qing Dang,Xuan Ling,Qian Zhang,Shipai Song,Xiaoran Hu
The safety incidents caused by the thermal runaway of lithium-ion batteries (LIBs) have motivated people to develop sensing technologies to monitor the temperature and pressure for safety warnings. However, current external sensors face challenges such as low accuracy and high latency. Internal sensors are limited by device size, which usually allows for monitoring only a parameter and significantly impacts the capacity and cycle characteristics of LIBs. The present work designs an implantable integrated sensor (TPS) capable of real-time monitoring of the temperature and pressure inside the 6Ah LIB. The TPS is composed of a PT1000 temperature-sensitive alloy and a polydimethylsiloxane/ carbon nanotubes piezoresistive composite. The TPS offers a temperature measurement range of −50–80 °C with an accuracy of 0.30 °C; and a pressure measurement range of 0–2 MPa with an accuracy of 0.11 MPa, and shows significant accuracy when compared with external sensors. Furthermore, the TPS has a rather low impact on the battery capacity with a retention rate of 92.80% after 300 cycles, which is only 0.75% lower than normal batteries, and a maximum Coulombic efficiency difference of 0.04%. The proposed TPS holds promise for monitoring the temperature and pressure of LIBs and promotes its safe utilization.
研究领域:
材料科学
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能源工程
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产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2021
·Vol. 9
·期 41
·14757-14765
·
IF 7.393
Hanyang Li,Feng Wei,Yanzeng Li,Miao Yu,Yu Zhang,Lu Liu,Zhihai Liu
Temperature is a critical parameter for evaluating battery safety during the process of charging and discharging. However, it is a challenge to monitor it accurately because batteries are used in various compact environments such as energy stations. In this study, β-NaYF4:Er3+/Yb3+@NaYF4 nanoparticles were used to fabricate an optical fiber temperature sensor for battery temperature monitoring. The temperature sensing characteristics of the optical fiber sensor were explored in the range of 293–373 K using fluorescence intensity ratio (FIR) technology which can improve the temperature monitoring accuracy. The maximum relative sensitivity of the optical fiber sensor was 1.62% K−1 at 293 K and the temperature detection limit was within ±0.5 °C. By embedding the prepared sensor in a Li-ion battery, the proof of concept was obtained for monitoring the internal temperature of a battery with upconversion nanoparticles (UCNPs). A larger temperature variation was observed under a higher discharge rate. These results indicate that the prepared optical fiber sensor is an active tool for monitoring the thermal behavior and improving the safety of the battery.
研究领域:
材料科学
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能源技术
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光学工程
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED MATERIALS
·
2024
·
IF 27.4
Yuzhen Wang,Qimeng Zhang,Chenghao Yang,Zhiguo Xia
Thermal characteristics are essential for improving the performance and monitoring the status of Li-ion batteries (LIBs). However, it is a challenge to design efficient and facile sensing materials for the detection of the in situ temperature of a working LIB. Herein, a ratiometric fluorescence optical fiber is developed and real-time temperature monitoring is performed with a measurement accuracy of 0.12 °C, and the feasibility based on this polymer optical fiber composed of NaLaTi 2 O 6 :Yb/Er phosphors is verified in a pouch-type battery. During the charging and discharging cycles, the in situ temperature is instantaneously conveyed, revealing the internal situation of LIBs. This article further dwells on the thermal characteristics in constant current (CC)/constant voltage charging and CC discharging processes at different C-rates and the battery failure when operated at low temperatures (0 °C). This work demonstrates an innovative strategy for operando solitary temperature monitoring conducted by ratiometric fluorescence optical fiber.
研究领域:
材料科学
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能源技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Photonics
·
2022
·
IF 7.077
Meihua Chen,Yongcheng He,Haohua Liang,Hongyou Zhou,Xin Wang,Xiaobo Heng,Zhishen Zhang,Jiulin Gan,Zhongmin Yang
A stretchable fluorescent optical fiber provides a flexible platform for wearable functional devices due to its stretchability and immunity to electromagnetic interference. However, for wearable applications, stretchable fiber sensors suffer from severe body movement-induced strain interference. Here, we report a stretchable optical sensor with strain-decoupling ability. The stretchable core-clad structured optical fiber is prepared with fluorescent nanoparticles and silicone-based elastomers that enable both efficient excitation light delivery and fluorescence collection. The excitation light loss and fluorescence intensity exhibit a linear response to the sensing variables and strain change, which have been utilized as the sensing parameters to decouple the strain from the sensing variables. Our strain-decoupled scheme is widely applicable to other stretchable fluorescent optical fiber sensors that are simultaneously subject to strain. In the experiment described here, the temperature-sensitive fluorescent nanoparticle-doped stretchable fluorescent optical fiber exhibits stable temperature-sensing in the range −10 to 60 °C, with an uncertainty as low as ±0.23 °C and a relative sensitivity of 1.3% °C–1, even when it is subjected to large strain up to 40%. We demonstrate sensor-integrated wearable masks and gloves, which can simultaneously measure physiological thermal changes and the movement of the wrist joint. Our sensor shows great promise as a technology for wearable health monitoring.
研究领域:
生物医学工程
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材料科学
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光学工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2022
·
IF 6.14
Mingzhou Meng,Tianmei Zhang,Jiaoyu Wang,Zhenlong Cheng,Yuanli Liu,Xin Qiao,Jian Wen,Ute Resch-Genger,Wen Long,Jun Ou
The core–shell NaYF4:Yb3+/Tm3+@NaYF4:Yb3+ upconversion nanoparticles were successfully prepared by a solvothermal method, and a layer of mesoporous silica (mSiO2) was successfully coated on the periphery of the core–shell nanoparticles to transform their surface from lipophilic to hydrophilic, further expanding their applications in biological tissues. The physical phase, morphology, structure, and fluorescence properties were characterized by X-ray diffraction (XRD), field emission transmission electron microscopy (TEM), Fourier infrared spectroscopy (FT-IR), ζ potential analysis, and fluorescence spectroscopy. It was found that the material has a hexagonal structure with good hydrophilicity and emits intense fluorescence under 980 nm pump laser excitation. The non-contact temperature sensing performance of nanoparticles was evaluated by analyzing the upconversion fluorescence of Tm3+ (1G4 → 3F4 and 3F3 → 3H6) in the temperature range of 284–344 K. The absolute and relative sensitivities were found to be 0.0067 K–1 and 1.08 % K–1, respectively, with high-temperature measurement reliability and good temperature cycling performance. More importantly, its temperature measurement in phosphate-buffered saline (PBS) solution is accurate. In addition, the temperature of the cells can be increased by adjusting the laser power density and laser irradiation time. Therefore, an optical temperature sensing platform was built to realize the application of real-time monitoring of cancer cell temperature and the dual function of photothermal therapy.
研究领域:
生物医学工程
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纳米医学
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光学成像
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Miao Kong,Shufen Zhang,Yuang Zhang,Bingtao Tang
With the increase in integration, functionality, and power density of electronic devices, they need visual temperature sensing materials to intuitively monitor local temperature on the surface of electronic components. However, these materials still face challenges in developing reversible optical signal switching and improving visibility in response to external temperature changes. This work introduces free-standing quasi-amorphous arrays with fast structural color rendering behavior and high color visibility for visually specific temperature monitoring. The arrays employ the integration phase change polymers and polysulfide (PSF) microsphere quasi-amorphous arrays, enabling reversible structural color rendering behaviors in response to temperature changes. The PSF microsphere quasi-amorphous arrays exhibit high color visibility, stability against photobleaching, and further suppress interference from observation angles during temperature monitoring. Structural color rendering of different arrays occurs at 10.94 °C, 19.2 °C, 41.3 °C, and 54.1 °C, which is derived from thermally stimulated optical transparency switching in the crystalline region of phase change polymers. Following this principle, the designed visual temperature sensing label achieves reversible color switching between white and structural colors in response to external temperature changes. This label can be used to monitor temperature over a wide temperature range of simulated electronic chips, maintaining excellent stability after 100 cycles. Therefore, free-standing quasi-amorphous arrays offer a technique for reversible temperature-dependent structural color rendering, providing new opportunities for visually specific temperature monitoring.
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
International Journal of Nanomedicine
·
2020
·
IF 5.115
Yanchun Wei,Sen Liu,Changjiang Pan,Zhongmei Yang,Ying Liu,Jianfang Yong,Li Quan
Background Photothermal therapy with accurate and real-time temperature detection is desired in clinic. Upconversion nanocrystals (UCNs) are candidate materials for simultaneous temperature detection and photothermal agents carrying. However, the weak luminescence and multiple laser excitations of UCNs limit their application in thermal therapy.Materials and Methods NaYF4:Yb3+,Er3+,Nd3+, PL-PEG-NH2, IR-806 and folic acid are selected as structural components. A nanoprobe (NP) integrated with efficient photothermal conversion and sensitive temperature detection capabilities is synthesized for precise photothermal therapy. The probes are based on near-infrared upconversion nanocrystals doped with Yb, Er and Nd ions, which can be excited by 808 nm light. IR-806 dye molecules are modified on the surface as molecular antennas to strongly absorb near-infrared photons for energy transfer and conversion.Results The results show that under an 808 nm laser irradiation upconversion luminescence of the nanocrystals is enhanced based on both the Nd ion absorption and the FRET energy transfer of IR-806. The luminescence ratio at 520 and 545 nm is calculated to accurately monitor the temperature of the nanoparticles. The temperature of the nanoprobes increases significantly through energy conversion of the molecular antennas. The nanoparticles are found successfully distributed to tumor cells and tumor tissue due to the modification of the biocompatible molecules on the surface. Tumor cells can be killed efficiently based on the photothermal effect of the NPs. Under the laser irradiation, temperature at mouse tumor site increases significantly, tissue necrosis and tumor cell death can be observed.Conclusion Precision photothermal therapy can thus be achieved by highly efficient near-infrared light absorption and accurate temperature monitoring, making it promising for tumor treatment, as well as the biological microzone temperature detection.
研究领域:
生物医学工程
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纳米医学
·
肿瘤学
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产品关联
DOI
PubMed
高影响因子
Nano-Micro Letters
·
2025
·Vol. 17
·期 1
·1-24
·
IF 36.3
Yu Zhicai,Wan Yuhang,Zhou Mi,Mia Md Hasib,Huo Siqi,Huang Lele,Xu Jie,Jiang Qing,Zheng Zhenrong,Hu Xiaodong,He Hualing
Muscle-inspired anisotropic aramid nanofibers thermoelectric aerogel was prepared via directional freeze-drying strategy.
Resultant anisotropic aerogel exhibited high-efficiency thermoelectric conversion with Seebeck coefficient of 46.78 μV K −1 and low thermal conductivity of 0.048 W m −1 K −1 .
Thermoelectric aerogel-based multistage wireless high-temperature alarm system achieves a wide temperature sensing range (50–400 °C) and sensitivity response time (trigger time ~ 1.43 s) for firefighting clothing.
研究领域:
材料科学
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能源技术
·
生物仿生学
✓ 已验证
DOI
PubMed
高影响因子
FIBERS AND POLYMERS
·
2024
·
IF 2.2
He Xia,Liu Qingchun,Pan Lianjun,Zhou Ying,Xu Le,Zhou Shiyu,Ma Yixin
Wearable electronics based on natural biocompatible fibers have attracted considerable interests due to the promising use for healthcare monitoring, human–machine interactions, and smart clothing. However, crucial challenges to design robust, flexible, and highly sensitive fiber sensors remain, to meet various requirements for practical application. Herein, Fischer esterification and in situ polymerization technologies were employed to produce conductive nanocelluloses (CNC–PEDOT), which possessed excellent mechanical stiffness and high conductivity (238 μS/cm). Then, silk yarns as supporting materials were functionalized by as-prepared conductive units to construct all-in-one fiber sensor (SCP) for multiple signals monitoring. Surprisingly, the resulted SCP fiber showed impressive mechanical performances (422.86 MPa at 18.44%), due to the strong hydrogen-bond interaction between SY substrate and CNC–PEDOT conductive units. More importantly, SCP fiber was employed a dual-function sensor for real-time monitoring of strain and temperature, illustrating remarkable sensitivities, i.e., gauge factor = 4.28 in a large strain range of 0–16%, and sensitivity = 1.55%/℃ in a broad temperature range of 25–60 ℃. The SCP fiber sensor with impressive mechanical performances and high sensitivity, can be applied for real-time health monitoring in wearable biosensors, smart healthcare, and on-demand therapy.
研究领域:
材料科学
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生物医学工程
·
可穿戴技术
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2023
·Vol. 13
·期 11
·1704
·
IF 5.3
Hanyang Li,Miao Yu,Jichun Dai,Gaoqian Zhou,Jiapeng Sun
As one of the most critical parameters to evaluate the quality and performance of mobile phones, real-time temperature monitoring of mobile phones’ integrated chips is vital in the electronics industry. Although several different strategies for the measurement of chips’ surface temperature have been proposed in recent years, distributed temperature monitoring with high spatial resolution is still a hot issue with an urgent need to be solved. In this work, a fluorescent film material with photothermal properties containing thermosensitive upconversion nanoparticles (UCNPs) and polydimethylsiloxane (PDMS) is fabricated for the monitoring of the chips’ surface temperature. The presented fluorescent films have thicknesses ranging from 23 to 90 μm and are both flexible and elastic. Using the fluorescence intensity ratio (FIR) technique, the temperature-sensing properties of these fluorescent films are investigated. The maximum sensitivity of the fluorescent film was measured to be 1.43% K−1at 299 K. By testing the temperature at different positions of the optical film, distributed temperature monitoring with a high spatial resolution down to 10 μm on the chip surface was successfully achieved. It is worth mentioning that the film maintained stable performance even under pull stretching up to 100%. The correctness of the method is verified by taking infrared images of the chip surface with an infrared camera. These results demonstrate that the as-prepared optical film is a promising anti-deformation material for monitoring temperature with high spatial resolution on-chip surfaces.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）