ENERGY
·
2025
·
IF 9.4
Chuntian Li,Lian Li,Zhidong Wang,Qianyi Zhang,Hanwen Zhang,Zhiwen Wang,Ruiqi Shen,Luigi T. De Luca,Wei Zhang
To achieve accurate and adjustable propulsion power, it is essential to utilize propellant materials undergoing repeated ignition and combustion cycles. Injectable gel propellant materials possess superior mechanical properties and fluidity, allowing for the regulation of their combustion process through the precise control of flow rate. Herein, an injectable conductive ion gel which uses hydroxylamine nitrate ([NH 3 OH] + [NO 3 ] - , HAN) high-energy ion salt as matrix and lithium perchlorate ([Li] + [ClO 4 ] - , LP) and ammonium nitrate ([NH 4 ] + [NO 3 ] - , AN) ion salt to adjust its conductivity was reported. The components of this injectable conductive gel material exhibit high compatibility, as confirmed by XPS and FT-IR analysis, and the uniqueness of the conversion between liquid and solid has established a good supply property. After centrifugation at 5000 r·min −1 for 15 min, the eccentricity was only 0.6 %, demonstrating its excellent stability. Compared with the existing gel propellant materials, its ignition delay time in a single ignition test reached 700 ms under 225V and 8 ml min −1 . More importantly, the ignition delay can be reduced to around 200 ms after multiple repeated ignition tests, indicating an ultra-fast response phenomenon that rarely occurs in most of the research process, paving the way for realizing the ultrafast multiple repeated application of gel propellant materials in space propulsion.
研究领域:
材料科学
·
航天推进
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2019
·
IF 6.393
Jianxun Dai,Hongran Zhao,Xiuzhu Lin,Sen Liu,Teng Fei,Tong Zhang
Respiratory monitoring is crucial for the assessment of human health, and can be realized by detecting the humidity of exhaled gases. In this work, a facile method for the in situ fabrication of stable humidity sensors based on gel polymer electrolytes was developed. The obtained humidity sensors demonstrate ultrafast response/recovery times (0.19/0.30 s), which are very promising for monitoring respiration. Reliable signals for different respiratory states were obtained via humidity sensors. In addition, the ultrafast-response mechanism of the sensors was investigated using complex impedance spectroscopy and a quartz crystal microbalance (QCM).
研究领域:
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2023
·Vol. 33
·期 46
·2304917
·
IF 19
Changjian Chen,Zhu Lin,Honghui Huang,Xin Pan,Tian-Liang Zhou,Hongde Luo,Libo Jin,Dengfeng Peng,Jian Xu,Yixi Zhuang,Rong-Jun Xie
Converting mechanical energy into photon emission provides a promising route for intelligent sensing, self-powered lighting, and distributed energy harvesting, which is of great significance for finding a feasible solution to the current sensing technical bottleneck and energy crisis. As the basis for understanding the conversion mechanism and realizing high-frequency mechanical energy utilization, elucidating the dynamic process of intensity variation in the mechano-to-photon conversion remains a great challenge. Herein, a time-domain characterization scheme that enables to unravel the intrinsic decay of mechanoluminescence (ML) with lifetimes from milliseconds down to tens of microseconds is constructed. It is demonstrated that ML decay characterization is an important tool to reveal the dynamics of charge migration in ML materials. The ML decay in a typical self-reproducible ML material ZnS:Mn 2+ shows temperature dependence and stress fluctuation resistance, which opens up a new reliable approach for self-powered and remote temperature sensing. Finally, benefiting from the shortest ML lifetime recorded to date, an ultrafast-response stress sensor that enables to detect individual pulses of ultrasonic waves with ML sensing technology is developed.
研究领域:
材料科学
·
光学工程
·
传感器技术
✓ 已验证
产品关联
DOI
高影响因子
Advanced Optical Materials
·
2018
·Vol. 6
·期 21
·1800639
·
IF 7.43
Lufan Jin,Yating Zhang,Yu Yu,Zhiliang Chen,Yifan Li,Mingxuan Cao,Yongli Che,Jianquan Yao
Colloidal wurtzite-structure CdSe/ZnS quantum dots (CWQDs), with noncentral asymmetry structure and spontaneous polarization, have an extensive potential for applications based on the pyroelectric effect, such as energy harvestors, self-powered nanogenerators, and photosensors. Here, a low-cost, easy-fabrication, and high-speed self-powered photodetector is demonstrated, which performs independently without any external power source. The response of the device caused by the photoinduced-pyroelectric effect is experimentally investigated based on the Au/CWQDs/Au edge-electrodes structure, which exhibits an ultrafast photoresponse with a rising time of 20.6 µs and a falling time of 30.1 µs. Moreover, the frequency and temperature dependence of the device also is investigated under zero bias. This work provides a new approach to achieve self-powered photodetectors, which may show promise for extensive batch applications, such as wireless sensing, optothermal detection, optoelectronic communication, and energy harvesting.
研究领域:
材料科学
·
光电子学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2025
·
IF 9.5
Shafique Shareen,Haodong Wang,Yuheng Wang,Akeel Qadir,Taimoor Iqbal,Cheng Yang,Feiyu Zhao,Zhenfu Zhao,Muhammad Sulaman,Fei Zheng,Xu Wang,Ziyang Hu
The realization of high-speed optical communication and sensitive light detection with self-powered perovskite photodetectors (PDs) is imperative for advancing AI-driven optoelectronic systems, including visible light communication (VLC), surveillance, and environmental monitoring, necessitating exceptional detectivity and ultrafast response. Herein, we introduce a 2D synergy strategy employing Ti3C2Tx MXene to simultaneously enhance charge carrier transport, suppress defect states, and improve film morphology in perovskite films via percolation networks and surface passivation. The resultant self-powered perovskite PD achieves a dark current density of 1.46 × 10⁻10 A/cm², detectivity of 6.59 × 1012 Jones, a linear dynamic range exceeding 181 dB, and ultrafast response times (rise: 1.07 µs, fall: 0.74 µs), alongside robust stability with negligible degradation over continuous cycles. This work demonstrates integration of the optimized PD into an optical communication system, enabling ASCII-encoded signal reception across 460-730 nm and a sensitive light detection setup for low-light applications. Significantly, the optimized PD propels the advent of energy-efficient, high-speed optoelectronics, fostering unprecedented opportunities in AI-driven technologies.
研究领域:
材料科学
·
光电子学
·
人工智能技术
✓ 已验证
产品关联
DOI
高影响因子
Advanced Intelligent Systems
·
2020
·Vol. 2
·期 8
·2000036
·
IF 0
Guinan Chen,Zhonglin Yang,Wenwen Wang,Lili Bi,Liangjun Chen,Yongwu Peng,Changhui Ye
The ability to fabricate electrothermal actuators (ETAs) simultaneously featuring ultrafast response speed (within 0.1 s), large deformation (bending for at least 360°), high figure-of-merit (FoM, larger than 0.1%), and low driving voltage (smaller than 1 V) in a single device is extremely important and challenging for their applications in artificial muscles, switches, and microsensors for robotics and biomimetic devices. Herein, an ETA composed of a silver nanowire (AgNW) layer and an ultrathin linear low-density polyethylene (LLDPE) film with all the aforementioned features is designed. Due to the high conductivity of the AgNW layer and the great difference between the coefficients of thermal expansion of AgNW layer and LLDPE film as well as the huge change in the heat transfer coefficient between flat and rolled ETA, the obtained ETA exhibits an ultrafast response speed of 0.08 s for a bending angle of 360° with a FoM of 0.46% at a low driving voltage of 1 V, over one order of magnitude larger than those of reported ETAs. As a proof-of-concept application, the as-prepared ETAs can be used as intelligent mechanical devices with excellent performance.
研究领域:
材料科学
·
仿生学
·
机器人技术
✓ 已验证
产品关联
DOI
Journal of Materials Chemistry C
·
2021
·Vol. 10
·期 4
·1289-1301
·
IF 7.393
Sartaj Wali,Qin Yin,Jiao Li,Guoxiang Si,Muhammad Shafi,Junfeng Ren,Hongbin Zhang
Organic–inorganic heterostructures (OIHs) are an emerging topic that has attracted great research enthusiasm due to their unique features for electronic and optoelectronic applications. Although OIHs constructed with topological insulators and organic small molecule semiconductors may have better device performance, this type of heterostructure has rarely been reported, and more research is required to uncover its internal dynamics. Thereby, OIHs based on organic rubrene and inorganic topological insulator Bi2Se3, which were prepared by employing simple physical vapor deposition, were investigated for the first time. Experimental results proved that the crystalline rubrene and topological insulator Bi2Se3 films are promising candidates for fabricating high-performance organic–inorganic heterostructure photodetectors (OIHPDs) accompanied by a broadband photodetection range. The Dirac surface state at the heterojunction interface facilitates the dissociation and transportation of photo-generated carriers. Importantly, the OIHPDs displayed excellent diode characteristics with a current rectifying ratio of 460, a maximum responsivity of 8.85 A W−1, a high detectivity of 3.14 × 1012 Jones, and an ultrafast response speed with τrise (2.1 μs) and τdecay (2.9 μs) under near-infrared light illumination of 1064 nm, respectively. Due to these interesting results, the OIHPDs can be used in many detection fields, and suggest a promising opportunity for novel device application in the future.
研究领域:
材料科学
·
光电子学
·
半导体物理
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2023
·Vol. 19
·期 30
·2300154
·
IF 13.3
Rong Tu,Xinyu Li,Qingfang Xu,Tenghua Gao,Xian Zhang,Bao-Wen Li,Song Zhang,Takashi Goto,Lianmeng Zhang
The oriented growth of β-Ga 2 O 3 films has triggered extensive interest due to the remarkable and complex anisotropy found in the β-Ga 2 O 3 bulks. Remarkable properties, including stronger solar-blind ultraviolet (SBUV) absorption, better mobility, and higher thermal conductivity, are usually observed along <010> direction as compared to other low-index axes. So far, <010>-oriented β-Ga 2 O 3 film growth has been hindered by the lack of suitable substrates and higher surface energy of the (010) crystal plane. Herein, the first growth of uniquely <010>-oriented β-Ga 2 O 3 films on quartz substrates by laser chemical vapor deposition (LCVD) are reported. By investigating the effects of deposition temperature ( T dep ) and O 2 flow rate ( R O2 ) on the growth of β-Ga 2 O 3 films, it is found that the formation of <010> orientation is closely related to the higher stability of oxygen close-packed planes under O-rich condition. As a result, a grain size of up to ≈2 µm and a deposition rate of up to ≈ 40 µm h −1 are obtained. Metal-semiconductor-metal (MSM) type detector based on <010>-oriented β-Ga 2 O 3 film exhibits ultra-fast response speed, 1–2 orders of magnitude higher than those of most detectors based on β-Ga 2 O 3 films with other orientations.
研究领域:
材料科学
·
半导体物理
·
光电技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2022
·Vol. 139
·期 20
·52161
·
IF 3.057
Diqin Zhang,Yu Zhao,Zhen Zhang,Bin Guo,Jianhua Zhu,Yan Ye,Yuxia Zhao
Host matrices play an important role in the volume holographic gratings formation of photopolymers. In this study, a series of fluorinated epoxy resin (FTGE) with low refractive index (1.44–1.46) are synthesized and characterized by nuclear magnetic resonance spectra ( 1 H NMR, 19 F NMR) and fourier transform infrared spectra (FTIR). Fluorinated epoxy-amine cross-linked matrices are formed at room temperature and their thermal polymerization properties are investigated through real-time FTIR and thermogravimetric analyses (TGA). Using the fluorinated epoxy-amine as host matrices, holographic photopolymers are fabricated. The influence of different kinds (Prop-FTGE, Buta-FTGE, and Penta-FTGE) and weight ratios (0%, 8%, 16%, and 23%) of FTGEs on holographic performances of the photopolymers are explored. The results show that the sample with 23% Prop-FTGE has the most excellent holographic optical characteristics. 0.5 mm thick sample with 23% Prop-FTGE reaches 91% diffraction efficiency within 80 mJ/cm 2 exposure dosage, and gets a 2000 lp/mm Bragg volume grating with 0.24° angular selectivity. Meanwhile, under a single pulse exposure mode (150–200 ps pulse width, 25 mJ/cm 2 exposure dosage), a grating with 4.4% diffraction efficiency is obtained, which proves the ultrafast response and recording capability of the sample.
研究领域:
光学材料
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2019
·
IF 6.393
Xiao Chang,Xiaofang Li,Xurong Qiao,Kun Li,Ya Xiong,Xiao Li,Tianchao Guo,Lei Zhu,Qingzhong Xue
It is imperative to explore an accurate ppb-level acetone sensor for noninvasive detection of diabetes. In this work, two dimensional p-type MoS 2 nanosheets are introduced on the surface of p-type ZnO derived from metal-organic frameworks (MOFs) to produce ZnO@MoS 2 core/shell heterojunctions as a novel acetone sensor, showing a great enhancement of acetone response, about two orders of magnitude than that of pure ZnO derived from MOFs. For example, the ZnO@MoS 2 exhibits about 80 times enhancement in response to 100 ppb acetone than that of pure ZnO. More importantly, this ZnO@MoS 2 heterojunctions sensor exhibits an ultra-fast response/recovery to ultra-low concentration acetone (60 s/40 s @ 5 ppb), which is the best acetone sensing performance for the metal oxide-based materials reported to date. Moreover, the acetone sensing performances are negligibly affected by humidity and other gas, which is suitable for exhaled acetone detection. Finally, it is elucidated that the sharp increase of negative heterojunction interface resistance, ultra-fast gas diffusion rates in MoS 2 nanosheets and strong interaction energy are key factors for the excellent acetone sensing properties of ZnO@MoS 2 . This work opens up a novel and efficient way for ultra-low concentration gas detection.
研究领域:
材料科学
·
传感器技术
·
医学诊断
✓ 已验证
产品关联
DOI
高影响因子
BIOSENSORS & BIOELECTRONICS
·
2021
·
IF 10.618
Xijuan Hao,Fangxin Hu,Yu Gu,Hongbin Yang,Changming Li,Chunxian Guo
Nitric oxide as a signal molecule participates in a variety of physiological and pathological processes but its real-time detection in cell assays still faces challenging because of the trace amount, short half-life and easy conversion to other substances. We report here a rational design by assembling highly π-conjugated and small capacitive gaphdiyne (GDY) with a coordination complex of hemin (HEM) into a molecularly assembled material of GDY/HEM to achieve ultrafast and real-time monitoring of nitric oxide in cell assays. GDY comprising alkynyl C atoms can hybridize with the HEM to enable strong π-π interaction and atomic dispersion of iron sites while avoiding the formation of catalytically inactive dimer for the HEM. These characteristics make the GDY/HEM an excellent sensing material towards nitric oxide, which has an ultrafast response time of 0.95 s, a low detection limit of 7 nM and long linear range up to 151.38 μΜ. The GDY/HEM realizes real-time monitoring nitric oxide released from cancer and normal cells, demonstrating its capability for cell analysis.
研究领域:
材料科学
·
分析化学
·
生物医学工程
·
细胞生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nano-Micro Letters
·
2022
·Vol. 15
·期 1
·1-13
·
IF 23.655
Xue Pan,Chen Yuanhao,Xu Yiyi,Valenzuela Cristian,Zhang Xuan,Bisoyi Hari Krishna,Yang Xiao,Wang Ling,Xu Xinhua,Li Quan
Design and fabrication of MXene-based soft actuators with angle-independent structural color.
The nanostructured MXene can not only facilitate the formation of short-range ordered 3D amorphous photonic crystals, but also help significantly improve structural color saturation.
The soft actuators exhibit brilliant angle-independent structural color, ultrafast actuation and recovery speeds in response to vapor.
研究领域:
材料科学
·
纳米技术
·
机器人学
·
光学
✓ 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）