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
·
光电子学
·
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 11
·3907-3914
·
IF 5.7
Xiangyu Xu,Yuxuan Fu,Zhongren Shi,Chao Li,Yan Kuai,Zhijia Hu,Zhigang Cao,Siqi Li
Green light experiences minimal attenuation in water, rendering it indispensable for underwater wireless optical communication (UWOC). Among green light emitters, perovskite materials stand out due to their exceptional optical properties and cost-effectiveness, serving as reliable candidates to easily manufacture green light sources. However, in underwater environments, perovskites are susceptible to structural damage, which can lead to communication device failures. In this study, we introduce an innovative perovskite-based UWOC system, where the perovskite light source possesses the ability to autonomously self-repair. Firstly, we implement F-ion modification on CsPbBr3 QWs, significantly enhancing perovskite thermal stability. Subsequently, we incorporate CsPbBr3:F QWs into an all-dipole fluorine, imparting self-healing properties to the device. This results in the creation of a robust system capable of withstanding underwater conditions. This system can seamlessly integrate into a UWOC setup, achieving high-speed underwater communication. Remarkably, the device not only sustains stable operation in underwater environments for over a week but also fully restores communication speed after self-repair from complete breakage. Our innovative design provides substantial support for the future development of perovskite-based underwater communication technology and optoelectronics devices.
研究领域:
材料科学
·
光通信
·
纳米技术
·
光子学
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2017
·
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
·
环境科学
·
传感技术
✓ 已验证
DOI
高影响因子
CHINESE JOURNAL OF POLYMER SCIENCE
·
2022
·Vol. 41
·期 2
·288-296
·
IF 3.815
Tan Wan-Yi,Jian Ling-Feng,Chen Wei-Peng,Zhang Yong-Wen,Lu Xiao-Chuang,Huang Wan-Jun,Zhang Ji-Sheng,Wu Jing-Wu,Feng Jun-Li,Liu Yi-Dong,Cui Ting-Ting,Min Yong-Gang
Modified polyimides (MPIs) show great potential towards 5G communication applications, due to its excellent thermal stability, mechanical property and chemical stability as compared to most of polymers. Introducing fluoride groups or porous structure is favorable to ultra-low dielectric constant ( D k ) and dielectric loss ( D f ). However, the cost of the fluorinated MPIs is high and their synthetic processes are complicated, and porous MPIs suffer poor mechanical properties. Also, increasing the fraction of free volume is a very effective way to lower D k through introducing more ultra-low- D k air component. However, most of this kind of MPIs lag far behind the fluorinated MPIs and the porous MPIs in terms of ultra-low D f , hindering the application of MPIs in high-speed communication devices. Thus, it is highly desirable to develop intrinsic ultra-low- D k / D f MPIs at high frequency with less fluoric groups and nonporous structure. Herein, we introduce a facile and effective strategy to lower D k and D f through introducing rigid and large sterically hindered aromatic groups into MPIs. On the one hand, their large steric hindrance effect leads to low D k by increasing intrinsic free volume. On the other hand, the resulting highly stiff polymer chain and strong intermolecular interaction are favorable to reduce D f by inhibiting dipole orientations. Based on this strategy, the spirobifluorene groups are preferred. The as-prepared MPIs show excellent dielectric performance with low D k of 2.74–2.76 and low D f of 0.00599 at 10 GHz, to some extent, exceeding the multiple fluorinated MPI with D k / D f of 2.67/0.00663 at 10 GHz.
研究领域:
材料科学
·
电子工程
✓ 已验证
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2022
·Vol. 33
·期 1
·2210188
·
IF 19.924
Menghan Pi,Shanhe Qin,Sihan Wen,Zhisen Wang,Xiaoyu Wang,Min Li,Honglang Lu,Qingdang Meng,Wei Cui,Rong Ran
Swelling is ubiquitous for conventional hydrogels but is not favorable for many situations, especially underwater applications. In this study, an anti-swelling and mechanically robust polyacrylic acid (PAAc)/gelatin composite hydrogel is reported with a rapid gelation process (10 1 s) under mild conditions via the synergy of MXene-activated initiation and zirconium ion (Zr 4+ )-induced cross-linking, without the requirement of external energy input. The MXene is found efficient to activate the chain initiation, while the Zr 4+ is prone indispensable for facilitating the cross-linking of formed polymer chains. The resulting hydrogel exhibits integration of exceptional anti-swelling properties and high mechanical performance at room temperature, thanks to the dense hydrogen bonds between PAAc and gelatin chains that enable an upper critical solution temperature above room temperature. Also, desirable electrical conductivity emerges in the hydrogel due to the simultaneous contribution of MXene and Zr 4+ , allowing stable electrical signal output of the gel upon deformation underwater. As a demonstration, an underwater communicator by harnessing the gel as a sensing module is assembled, which is capable of wirelessly delivering messages to the decoder on the ground via Morse codes. This study provides an exemplary way for the rapid gelation of tough and anti-swelling hydrogels for durable underwater applications.
研究领域:
材料科学
·
化学工程
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yapeng Zheng,Tianyang Cui,Jingwen Wang,Yuquan Chen,Mingyu Ou,Hailong He,Yuan Hu,Zhou Gui
Polymeric gels have emerged as cornerstone materials in driving transformative advancements in flexible sensors, electronic skins, and wearable devices. While low hysteresis enables efficient energy transfer, high stretchability accommodates large deformations, and superior mechanical strength ensures structural integrity, their balanced integration remains a critical challenge. In this research, we introduce a solvent-engineered approach to fabricate P(HEA-co-AA) DES-IL gels via a precisely tuned hybrid solvent system. By leveraging electrostatic interactions and structural dynamics, the resulting DES-IL gels exhibit exceptional mechanical properties, including ultra-high stretchability (∼1783.6 %), high fracture strength (520.5 kPa), and superior compressive strength (∼795.0 kPa at 75 % strain). Additionally, these gels show low hysteresis (6.4 %) and a low energy coefficient (η = 0.175). These intrinsically conductive gels were utilized to develop customizable strain sensors, demonstrating notable sensitivity with a gauge factor of 1.01 and a remarkable linear correlation coefficient (R 2 = 0.998) across a broad strain range. These sensors also featured a fast response time (143 ms), low hysteresis time (161 ms), and a low strain detection threshold (0.1 %). Leveraging these features, a wireless motion detection platform was demonstrated, enabling real-time recognition of dynamic strain and human motion patterns. Furthermore, these sensors support encrypted data transmission, highlighting their potential for secure, multifunctional sensing in next-generation flexible electronics.
研究领域:
材料科学
·
柔性电子
·
传感器技术
✓ 已验证
产品关联
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
·
光学工程
·
通信技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Huiying Fan,Yun Zhang,Shihua Ding
Li (1+ x ) AlSiO 4 ceramics were synthesized using the conventional solid-state reaction method. X-ray diffraction analysis indicated that they crystallized in single-phase hexagonal structure. Li loss was studied using the thermogravimetric-differential scanning calorimetry (TG-DSC). Appropriate excess Li resulted in sintering temperature reduction from 1325 ℃ to 1225 ℃. The ultra-low dielectric constant ( ε r ) was influenced by the polarizability per unit volume. Theoretical calculations manifested that enhancing the packing fraction suppressed lattice vibrations, resulting in a significant increase in the quality factor ( Q×f ). Compared with the pure phase samples, adding Li ions optimized the thermal stability of the ceramics. Specifically, Li 1.02 AlSiO 4 demonstrated optimal microwave dielectric properties with ε r = 4.13, Q×f = 45,387 GHz and τ f = -35.54 ppm/°C, making it a spacious application prospect in the field of 6 G communication.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
Advanced Energy Materials
·
2024
·
IF 24.4
Hao Chen,Jun-Lin Zhan,Huan Xia,Jia-Ning Li,Ze-Hui Chen,Ming-Yang Geng,Hong-Tu Qu,Xin-Yu Lv,Chao Zhang,Lu Ju,Tong-Shuai Sun,Bu-Yun Yu,Zheng-Hao Kou,Wen-Zhe Song,Wei Zhang,Zheng-Ming Sun,Wei-Bing Lu
The demand for wearable monitoring devices in contemporary medicine has significantly increased, especially in dynamic environments where traditional bulky equipment is impractical. Conventional flexible wearable devices or systems suffer from limited air and moisture permeability, lack of stretchability, and high power consumption, which restrict their long-term usage and comfort. Herein, a stretchable and breathable backscattered monitoring system (SBBMS) is introduced, integrated with a fabric substrate. To address the challenges associated with fabric substrate system fabrication and encapsulation, a printing-cutting-transfer technology is proposed. This method enables the creation of unique, low-cost, high-precision, and robust circuit routing and electronic devices on fabric, maintaining high compatibility with commercial surface mounting technology while minimizing sacrifices in breathability. Additionally, a backscatter communication mechanism is designed and implemented to achieve wireless data transmission, which significantly reduces power consumption. Combined with energy management technology and hydrogel batteries, the SBBMS receives safe, multi-source, and eco-friendly energy support. Furthermore, through meticulous design, all modules—including the antenna, circuit, and battery—are made stretchable, providing the system with excellent strain-resistive performance. The approach paves the way for the development of breathable, high-performance, and highly integrated fabric-based wearable systems, catering to specific user groups such as athletes, soldiers, and pilots.
研究领域:
生物医学工程
·
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Jin Fang,Tao Ni,Minmin Mao,Yu Liu,Huan Liu,Lei Cao,Xueqing Yu,Bing Liu,Hadi Barzegar Bafrooei,Liang He,Yingjie Ren,Fayaz Hussain,Dawei Wang,Kaixin Song
MgSiO 3 ceramics with a low dielectric constant are highly promising for application in 5G communication due to their excellent performance and cost-effectiveness. However, the application remains constrained by phase transitions. This study aims to unlock their full potential by introducing Cu ions to mitigate phase transitions, thereby achieving stable and superior performance. Mg 1- x Cu x SiO 3 (0 ≤ x ≤ 0.25) ceramics were synthesized by solid-state method, and the effects of Cu introduction on the crystal structure, phase constitution, microstructure and microwave dielectric properties were systematically investigated. Through XRD patterns and Rietveld refinement , it was found that when x = 0, both protoenstatite (PEN) and low-temperature clinoenstatite (CEN) phases coexist due to a phase transition from PEN to CEN. As x increases, the PEN phase dominance rises while the CEN phase diminishes, indicating that the addition of Cu ions inhibits the occurrence of phase transition. At x ≥ 0.2, only the orthoenstatite (OEN) phase was observed. SEM and EDS analyses revealed the beneficial impact of Cu introduction on sintering, yet excessive amounts can lead to abnormal grain growth , local segregation, and uneven distribution of Cu elements, thereby deteriorating microwave dielectric properties . The optimal microwave dielectric performance was achieved at x = 0.05: ε r = 6.2, Qf = 93,600 GHz, τ f = −33.7 ppm/°C. A one-year long-term comparative study revealed the stabilizing effect of Cu incorporation for obtaining stable excellent performance. These findings underscore the potential of introducing an appropriate amount of Cu to achieve stable and superior microwave dielectric properties in MgSiO 3 ceramics, paving the way for practical applications in 5G communication.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2024
·
IF 3.5
Xiaohui Wu,Xixi Wang,Yulan Jing,Yuanxun Li,Hua Su
With the emergence of 5G–6G communication technology, the miniaturization and integration of electronic components are crucial. Ba 3 Ti 4 Nb 4 O 21 (BTN) ceramics with hexagonal structures have attracted special attention due to their high dielectric constant, which shows greater application potential in communication base stations and dielectric resonators. However, its high sintering temperature and low-quality factors also greatly limit the application field. In this paper, boric acid (H 3 BO 3 ) as a dopant, was used to investigate the influence on the structure, microstructure, Raman spectrum, and microwave properties for Ba 2.92 Cu 0.08 (Zn 1/3 Nb 2/3 ) 2 Ti 2 Nb 4 O 21 (BCZTN)- x HB (0.25≤ x ≤1.25 wt%) ceramics. The results reflected that H 3 BO 3 was an effective additive, which could promote ceramic densification, accelerate grain growth and uniform distribution, and enhance its microwave performance. Among them, high densification was 93.92 ± 0.35%, and the Q × f value ∼16981 ± 340 GHz at x = 0.75, was more than 2∼3 times higher than other BTN-based ceramics. Superior microwave dielectric properties were achieved for 0.75 wt% H 3 BO 3 -doped BCZTN ceramic sintered at 900°C: ε r ∼42.35 ± 0.48, Q× f ∼16981 ± 340 GHz, and τ f ∼40.02 ± 1.43 ppm/°C. More encouragingly, BCZTN-0.75HB ceramic did not chemically react with Ag, which suggested that it had the potential to be a candidate material for low-temperature co-fired ceramics base station communication devices.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
Advanced Optical Materials
·
2023
·
IF 9
Ximing Sun,Zhanyu Wang,Xuejing Du,Dawei Zhao,Feng Cui,Lujia Cong,Yandong Ren
Optical communication has become a research hotspot in modern non-contact communication systems, and high-performance photodetectors, as a key component, are crucial for achieving high-fidelity signal transmission. Photoconductive devices (PCDs) are expected to find applications in the field of optical communication due to their advantages in high gain. However, it is difficult to achieve an effective balance between high responsiveness and fast response times in PCDs, leading to significant challenges in their commercial applications in the field of optical communication. In this paper, by employing both the mask method and channel width tuning method, a high-performance PCD is developed based on the Ag-MAPbI 3 -Ag structure, demonstrating a high responsivity of 45.5 A W −1 , a high detectivity of 7 × 10 12 Jones, and a fast response time of 0.35 ms. Finally, this device is integrated into an optical communication system using embedded technology, effectively achieves byte transmission, and demonstrates the practical application of single-crystal MAPbI 3 PCD as a signal receiver in the system. This research provides a noteworthy approach to facilitating the seamless integration and commercialization of optical communication systems utilizing perovskite single-crystal devices, while also paving the way for optical interconnects based on perovskite.
研究领域:
材料科学
·
光学工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）