SENSORS AND ACTUATORS B-CHEMICAL
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2017
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IF 5.401
Guolong Shi,Yigang He,Qiwu Luo,Bing Li,Chaolong Zhang
Portable sensor system was constructed for detection of acetone vapor based on the cataluminescence (CTL) theory. Excellent microspheres were prepared successfully which increased the contact probability with vapors. The instrument architecture, optimal experiment conditions and measurement characteristics were discussed in detail. The results showed the CTL sensor instrument exhibited excellent CTL properties including visible intensity, high signal/noise (S/N) values, short response time (within 2 s) and recovery time (within 3 s). The sensor instrument covered a linear test range from 5 ppm to 2500 ppm, while the sensor showed non-linearity when concentration ranged from 2500 ppm to 8000 ppm. Furthermore, the sensor system showed outstanding selectivity to acetone compared with other ten kinds of common vapors. Moreover, the CTL sensor also showed an excellent response for H 2 S, the CTL performance of H 2 S under different wavelength and temperature was also discussed. The excellent sensing and online detecting properties proved this sensor instrument to be an excellent candidate for real-time gas contaminant detection. Finally, the sensing control processes and monitoring software interface was also presented.
研究领域:
分析化学
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环境科学
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传感技术
✓ 已验证
DOI
高影响因子
APPLIED OPTICS
·
2025
·Vol. 64
·期 12
·3250-3254
·
IF 1.7
Bin Tan,Bin Tan,Zhijie Zhang,Zhijie Zhang,Zhenhua Wang,Zhenhua Wang,Wei Xiong,Jingzhou Li,Leimin Deng,Xin Zhan
Quantum dots (QDs) preserve short photoluminescence (PL) lifetime and are widely developed for optical wireless communication (OWC). However, QDs often suffer from surface defects that limit their performance. In this work, we investigate the impact of post-treatment with didodecyldimethylammonium bromide (DDAB) and ${{\rm PbBr}_2}$ on the OWC performance of ${{\rm CsPbBr}_3}$ QDs. The treatment significantly improves the PL properties, leading to an increased quantum yield of 98% and a prolonged PL lifetime of 1.24 times compared to untreated QDs. As a consequence, the ${-}{3}\;{\rm dB}$ bandwidth and maximum data transmission rates under on–off-keying (OOK) modulation are also enhanced, reaching 0.79 and 1.15 times those of pristine QDs, respectively. This improvement highlights the importance of surface passivation for optimizing ${{\rm CsPbBr}_3}$ QDs in OWC applications.
研究领域:
材料科学
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光学工程
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通信技术
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产品关联
DOI
PubMed
高影响因子
SEMICONDUCTOR SCIENCE AND TECHNOLOGY
·
2021
·Vol. 36
·期 12
·125008
·
IF 2.352
Junshuai Gong,Zhiliang Wang,Huiwen Qu,Dingyong Cang
A coplanar waveguide flexible filter based on the polyimide substrate was fabricated by self-metallization technology. The measured results indicate that the central frequency of the proposed filter is 2.5 GHz, the minimum insertion loss is −0.71 dB and the return loss is better than −20 dB. To test the conformal characteristics of the filter, bending and folding tests were performed. The test results show that the measured and simulated results are basically the same when the filter is bent and folded. The flexible filter fabricated by self-metallization technology is expected to be one of the components of future flexible wireless communication systems.
研究领域:
电子工程
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通信技术
✓ 已验证
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2025
·
IF 6.2
Shuai Zhu,Xin Wang,Yuhui Li,Xiaochi Lu,Liang Cao,Lei Yu,Zhefei Wang
Novel barium feldspar-based microwave dielectric ceramics derived from graphite tailings (BAS-GT) were prepared via the solid-state reaction method. The effects of Sr 2 + substitution on the phase composition, microstructure and microwave dielectric properties of sintered ceramics were investigated. Results demonstrated that the barium feldspar solid solution co-existed with Ca 2 Al 2 SiO 7 when excess Sr 2+ was introduced. The Sr 2+ substitution effectively improved the densification and microwave dielectric properties of the BAS-GT ceramics, especially the quality factor ( Q × f ) and temperature coefficient of resonant frequency ( τ f ), attributed to the optimised phase composition and good sintering behaviour. A component standard for utilising graphite tailings in microwave dielectric ceramics was established. The 10 mol% Sr 2+ substituted BAS-GT ceramic samples sintered at 1150 °C exhibited optimised microwave dielectric properties, with εᵣ = 7.13, Q × f = 28,452 GHz, and τ f = –27.12 ppm/°C, indicating significant potential of these ceramics for applications in 5 G wireless communication technology.
研究领域:
材料科学
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电子工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2025
·
IF 5.1
Lizhao Nie,Linqi Chen,Jingzhou Li,Yijing Wang,Xiaoxia Wang,Long Zhang,Hongxing Dong,Anlian Pan
Copper indium selenide (CISe) quantum dots (QDs), a class of narrow bandgap and environmentally friendly QDs, have been developed rapidly for application in the fields of biomedicine, solar cells, and telecommunications. However, synthesizing CISe QDs that emit beyond 800 nm while maintaining high photoluminescence quantum yields (PLQY) remains a significant challenge. Herein, we employed a hot injection solution method to synthesize high-quality core–shell structure Zn:CuInSe2/ZnS QDs by adjusting the stoichiometric ratio of the CISe core and doping with Zn2+. The fabricated QDs exhibit a high PLQY of 62.7% at an emission wavelength of 810 nm with excellent photochemical stability and a large Stokes shift (150 nm). This can be attributed to pre-doping, which suppresses the cation exchange between Zn2+ and Cu+ or In3+ during the shelling process, and the passivation effects of ZnS on surface defects of the QDs. Furthermore, we demonstrate their application by using a home-built optical wireless communication (OWC) test platform, and the prepared QDs exhibit a modulation bandwidth of 3.23 MHz. With a bit error rate (BER) below the forward error correction (FEC) threshold of 0.0038, the system is capable of achieving a maximum data transmission rate of 14 Mbps. The synthesized high-efficiency PLQY Zn:CuInSe2/ZnS QDs could be expected to promote the development of near-infrared (NIR) wireless communications.
研究领域:
材料科学
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光电子学
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通信工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2024
·Vol. 12
·期 15
·5370-5376
·
IF 5.7
Zhanpeng Wang,Luyang Hou,Jingzhou Li,Jiahao Zhang,Hongyu Yang,Yichi Zhong,Hongxing Dong,Long Zhang
CsPbBr3 nanoplates with excellent optical properties are emerging as a kind of novel functional material and are applied in many fields. In this work, we synthesize high-efficiency CsPbBr3 nanoplates with extreme blue emission and near 100% photoluminescence quantum yield. The unique optical properties and stable structure result from the sufficient surface passivation due to the addition of ZnBr2, which endows it with great prospects in the field of blue light optical wireless communication. CsPbBr3 nanoplates show 32 MHz bandwidth with no dependence on excitation power, excitation light incidence angle and solution concentration. Furthermore, the optical wireless communication system is built based on CsPbBr3 nanoplates and up to 150 Mbps signal transmission rate is achieved, which demonstrates its bright application potential.
研究领域:
材料科学
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光学工程
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通信技术
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry C
·
2023
·Vol. 12
·期 5
·1897-1908
·
IF 6.4
Enke Feng,Xiaoqin Li,Zhongquan Yu,Zhiming Yang,Zhiqiang Wu,Mengzhen Zhang,Qin Wang,Xinxian Ma
Hydrogel-based flexible electronics have received increasing attention owing to the requirement in a variety of applications. However, the design and development of underwater and self-adaptive high-temperature strain sensors remain a significant challenge because of the swelling and dehydration of hydrogels in aquatic environments and extreme climate conditions. Herein, a versatile gel with superior self-adhesiveness, long-lasting underwater stability, excellent high-temperature tolerance and long-term non-drying properties is successfully prepared, which can serve as a wearable sensor for precisely and reliably detecting diverse body movements and the direction of human movements in air and aquatic environments. Meanwhile, based on the Morse code expression, the as-fabricated gel sensor can also be utilized as a wearable communication device for delivering various messages to the receiver. Furthermore, a wireless sensor with high-temperature adaptability is constructed, which can transmit in real time the motion signals at high temperature to the specific APP of a smartphone at room temperature via wireless communication. This strategy provides a new perspective and great convenience for motion monitoring under harsh conditions. In particular, the as-prepared gel demonstrates an obvious transparency-shifting behavior in different polar solvents, thus inspiring us to engineer it as a novel water-writing paper for achieving repeatable “writing–erasing” applications.
研究领域:
材料科学
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生物医学工程
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传感技术
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS A-PHYSICAL
·
2025
·
IF 4.9
Zhenting Wu,Ruifang Liu,Shaohua Xing,Qing Hao,Long Ba
Sweat monitoring can reflect human health status, and insensible sweat is crucial for assessing skin barrier functions and physiological status. The development of a flexible, breathable, and insensible sweat rate sensor is still a challenge. Here we prepared a fabric-based humidity sensor for human insensible sweat rate monitoring. In which the CS/PVA/CNP composite material has a significant response to changes in humidity, the humidity-sensitive material and interdigital electrodes are encapsulated in the middle of two layers of hydrophobic fabrics, which effectively avoids the influence of external water on the sensor; and it is also breathable, ensures the wearing comfort. The sensor is integrated with wireless communication and powering module to monitor the insensible sweat rate at different body locations continuously. Human testing demonstrated the feasibility of the system to assess the insensible sweat rate of the body under different exercise conditions. Our sensor provides a low-cost device platform that offers new ideas for research in personalized medicine and smart clothing.
研究领域:
生物医学工程
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智能纺织品
·
可穿戴设备
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2024
·
IF 13
Yutong Bai,Ziting Liu,Tianmu Niu,Yaozhen Yi,Haixu Dou,Lingjie Song,Luquan Ren,Jie Zhao
Traditional microneedle (MN) technology offers unique advantages in treating wound infections; however, its single-function design lacks the capability for real-time monitoring of wound conditions, often resulting in uncontrolled drug release. Herein, an anti-infective and intelligent MN patch (SP-CSMN) integrating three functional modules is developed, including temperature monitoring, Bluetooth wireless communication, and responsive drug release. The patch employed chitosan (CS) as a porous substrate, filled with temperature-sensitive poly(N-isopropylacrylamide) (PNIPAM) to encapsulate and release the antibiotic rifampicin. With the integrated sensing chip, SP-CSMN enabled continuous temperature monitoring and real-time feedback via smartphone Bluetooth communication. When the wound temperature exceeds 36.5 °C for 6 h, the system can automatically identify the infection occurrence and activate the heating module to trigger PNIPAM contraction, triggering rifampicin release. This self-sensing and intelligent release cycles can repeat throughout its life-cycle. The SP-CSMN demonstrated precisely temperature-induced drug release and enhanced antibacterial activities against Staphylococcus aureus ( S. aureus ) and Escherichia coli ( E. coli ) in vitro. Furthermore, it sensitively monitored wound temperature changes in infected mice and significantly accelerated wound healing via controlled drug delivery. This advanced MN system offers a promising solution for efficient management of bacterial wound infections.
研究领域:
生物医学工程
·
药剂学
·
感染性疾病
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nano Energy
·
2021
·
IF 17.881
Hu Li,Tianrui Chang,Yansong Gai,Kui Liang,Yanli Jiao,Dengfeng Li,Xinran Jiang,Yang Wang,Xingcan Huang,Han Wu,Yiming Liu,Jian Li,Yiming Bai,Kai Geng,Nianrong Zhang,Hua Meng,Dongsheng Huang,Zhou Li,Xinge Yu,Lingqian Chang
Flexible and wearable electronics have presented a wide range of advantages to non-invasive real-time human health monitoring. However, its remarkable energy consumption during continuous and long-time operation brings essential, practical challenges, which lead to growing recognition of exploring new and efficient energy strategies for wearables. Here, inspired by human joints as a biomechanical energy source that shows an ideal option for sustainable powers, we design a battery-free sweat sensing system integrated with sweat resistant self-sustainable energy supply and wireless communication interface, where piezoelectric nanogenerators (PENGs) efficiently converting biomechanical energy from freely movable joints (finger, cubital fossa and popliteal space) into electricity serving as the self-powering module. Physiological relevant parameters in sweat, including Na+ , K+ and pH, are sensed and wirelessly transmitted to the user interface via Bluetooth communication. This system shows a paradigm of wearable electronics driven by human joints that demonstrated efficient self-sustainable energy supply and multiplexed physiological detection.
研究领域:
生物医学工程
·
可穿戴设备
·
能源技术
✓ 已验证
DOI
高影响因子
SENSORS
·
2018
·Vol. 18
·期 9
·2977
·
IF 2.475
Yong Pan,Ning Mu,Bo Liu,Bingqing Cao,Wen Wang,Liu Yang
A novel surface acoustic wave (SAW) sensor array based on wireless communication network is prepared. The array is composed of four SAW sensors, a wireless communication network module, and a global positioning system (GPS) module. The four SAW sensors of the array are coated with triethanolamine, polyepichlorohydrin, fluoroalcoholpolysiloxane, and L-glutamic acid hydrochloride to detect hydrogen sulfide (H2S), 2-chloroethyl ethyl sulfide (CEES), dimethylmethylphosphonate (DMMP), and ammonia (NH3) at film thicknesses of 50–100 nm. The wireless communication network module consists of an acquisition unit, a wireless control unit, and a microcontroller unit. By means of Zigbee and Lora technologies, the module receives and transmits the collected data to a PC work station in real-time; moreover, the module can control the sensor array’s working mode and monitor the working status. Simultaneously, the testing location is determined by the GPS module integrated into the SAW sensor array. H2S, CEES, DMMP, and NH3are detected in 300 m at different concentrations. Given the practical future application in environment in the future, the low, safe concentrations of 1.08, 0.59, 0.10, and 5.02 ppm for H2S, CEES, DMMP, and NH3, respectively, are detected at the lowest concentration, and the sensitivities of different sensors of the sensor array are 32.4, 14.9, 78.1 and 22.6 Hz/ppm, respectively. With the obtained fingerprints and pattern recognition technology, the detected gases can be recognized.Keywords:SAW sensor array;wireless communication;network;detection;gases
研究领域:
传感技术
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Small
·
2022
·Vol. 18
·期 10
·2107232
·
IF 15.153
Xingling Wang,Yuxiang Shi,Peng Yang,Xinglin Tao,Shuyao Li,Rui Lei,Zhaoqi Liu,Zhong Lin Wang,Xiangyu Chen
Conventional approaches to studying fish kinematics pose a great challenge for the real-time monitoring of fish motion kinematics. Here, a multifunctional fish-wearable data snooping platform (FDSP) for studying fish kinematics is demonstrated based on an air sac triboelectric nanogenerator (AS-TENG) with antibacterial coating. The AS-TENG not only can harvest energy from fish swimming but also serves as the self-powered sensory module to monitor the swimming behavior of the fish. The peak output power generated from each swing of the fishtail can reach 0.74 mW, while its output voltage can reflect the real-time behavior of the fishtail. The antibacterial coating on the FDSP can improve its biocompatibility and the elastic texture of the FDSP allows it to be tightly attached to fish. The wireless communication system is designed to transmit the sensory data to a cell phone, where the detailed parameters of fish motion can be obtained, including swing angle, swing frequency, and even the typical swing gestures. This FDSP has broad application prospects in underwater self-powered sensors, wearable tracking devices, and soft robots.
研究领域:
生物力学
·
能源技术
·
传感器技术
✓ 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）