CELLULOSE
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2019
·Vol. 26
·期 17
·9255-9268
·
IF 3.917
Liu Yixin,Liu Lin,Li Zhen,Zhao Yinan,Yao Juming
Abstract Novel, flexible, smart cellulose nanocomposite plates were fabricated by coating graphene nanoplate (GnPs) solution on the surface of cellulose sol, followed by hot pressing, in which GnPs was directly exfoliated and dispersed by PVP as exfoliating and dispersing agent. The structure, properties, and dual sensing (strain and pressure) of the resultant cellulose/GnPs nanocomposite plates (CGP) were systematically investigated. The formed conductive graphene network within the cellulose substrate, and the strong interfacial adhesion between cellulose and GnPs endowed the CGP excellent electromechanical properties, i.e. low electrical resistance (< 270 Ω cm), stable sensitivity on strain (GF 5.87) and pressure (S 0.037 kPa −1 ), good durability (> 1000 loading/unloading cycles). This work provided a green and facile approach to fabricate smart cellulose sensor responding to different external stimuli like stretch and compress by electrical resistance changes. Graphic abstract
研究领域:
材料科学
·
传感器技术
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DOI
高影响因子
Soft Science
·
2024
·Vol. 4
·期 1
·N
·
IF 0
Biao Ma,Ke Huang,Gangsheng Chen,Yingnan Tian,Nan Jiang,Chao Zhao,Hong Liu
Simultaneous monitoring of the body’s biochemical and biophysical signals via wearable devices can provide a comprehensive assessment of an individual’s health state. However, current multifunctional sensors for synchronous biochemical and biophysical sensing rely on discrete sensing units, posing a limitation in increased complexity in device assembly, signal processing, and system integration. In this study, we report a dual-mode and self-powered wearable sensor with ion and pressure-sensing capabilities by interfacing a hydrogel film with a solid ion-selective electrode. The hydrogel film can not only collect natural sweat from the skin but also offer a piezoionic response to pressure. We show that wrist pulse-induced pressure response can be incorporated into the noise of the response to sweat sodium ions, allowing for the simultaneous measurement of heart rate and sweat electrolytes. This work provides an example of simplifying the development of wearable multimode sensors through the rational design of classic electrochemical sensors.
研究领域:
可穿戴传感器
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生物电子学
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生物医学工程
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电化学传感器
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健康监测
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DOI
IEEE SENSORS JOURNAL
·
2025
·
IF 4.5
Tao Lv,ZeWen Li,ChunYu Lv,XinYu Zhang,Ye Li,Mengying Xie
Flexible sensors with a single tactile sensing function have been extensively studied, however, the development of highly sensitive multifunctional sensors remains a significant challenge in the realm of wearable technology. In this paper, a multifunctional flexible capacitive sensor with integrated proximity, pressure and temperature perception is developed. The dielectric layer of the sensor is obtained by spontaneous polymerization of polyvinyl alcohol and the ionic liquid 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide at room temperature. The electrode structure is optimized by leveraging the capacitive fringing field effect, and the designed hole-circle shaped 4 × 4 electrode array achieves optimal proximity sensitivity with a maximal capacitance drop of 0.54 pF to human hand and a detection distance of 30 mm. Besides, the prepared microcone structure sensor exhibits high pressure sensitivity of 4.822 kPa-1(0-5 kPa), rapid response time (<100 ms), a broad detection range (~200 kPa), and excellent stability over 3000 cycles of loading/unloading tests. By exploiting the temperature dependence of the ionic liquid, the sensor also exhibits high temperature sensitivity of 80.6%°C-1(25-80°C). Finally, we verified the successful application of this sensor in dynamic finger trajectory recognition, multi-touch and robotic grasping state detection, paving the way for its use in artificial intelligence, healthcare, and intelligent robotics.
研究领域:
材料科学
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传感器技术
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可穿戴电子器件
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人工智能
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机器人技术
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生物医学工程
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产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Youwei Zhao,Qingzheng Jia,Yuxuan Zhang,Xinyuan Zhang,Ling Li,Yucang Zhang,Wenming Zhang
Wearable medical devices are gaining significant attention for their potential in intelligent health monitoring, particularly in response to the needs of an aging global population. However, conventional systems often suffer from limitations in power supply, mechanical adaptability, and real-time diagnostic capabilities. In this work, a flexible, self-powered intelligent sensing system is reported, based on a carbon cloth substrate modified with a pomegranate-inspired Polyaniline-Prussian blue (CC@PANI-PB) composite. This multifunctional composite simultaneously serves as a high-performance cathode material for lithium-oxygen (Li-O₂) batteries and as an active sensing layer for pressure and ECG signal acquisition. The unique microstructured morphology and optimized interfacial interactions enable both high energy output and ultrasensitive tactile sensing. The resulting sensor exhibits a wide detection range (30–100 000 Pa), exceptional mechanical durability (over 9000 cycles), and ultrahigh sensitivity (S max = 4.16 × 10⁷ kPa⁻¹). Integrated with a Li-O₂ energy unit and signal processing module, the system enables continuous pulse signal acquisition and ECG classification, achieving a disease prediction accuracy of 95.90% and ECG classification accuracy of 93.75%. This integrated platform demonstrates strong potential for next-generation wearable healthcare systems, combining real-time sensing, energy autonomy, and intelligent diagnosis within a unified framework.
研究领域:
生物医学工程
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材料科学
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纳米技术
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传感器技术
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可穿戴设备
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心脏病学
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能量存储
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医疗人工智能
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中西医结合
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）