ADVANCED MATERIALS
·
2016
·Vol. 29
·期 3
·1603374
·
IF 18.96
Chuanrui Chen,Fangzhi Mou,Leilei Xu,Shaofei Wang,Jianguo Guan,Zunpeng Feng,Quanwei Wang,Lei Kong,Wei Li,Joseph Wang,Qingjie Zhang
Graphical Intelligent photoresponsive isotropic semiconductor micromotors are developed by taking advantage of the limited penetration depth of light to induce asymmetrical surface chemical reactions. Independent of the Brownian motion of themselves, the as-proposed isotropic micromotors are able to continuously move with both motion direction and speed just controlled by light, as well as precisely manipulate particles for nanoengineering.
研究领域:
材料科学
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纳米技术
·
光化学
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DOI
PubMed
高影响因子
Advanced Science
·
2022
·Vol. 9
·期 21
·2201341
·
IF 17.521
Yijing Yang,Rong Chen,Xun Zhu,Dingding Ye,Yang Yang,Wei Li,Dongliang Li,Haonan Li,Qiang Liao
Flexibly and precisely manipulating 3D droplet transportation is a fundamental challenge for broad implications in diagnostics, drug delivery, bioengineering, etc. Herein, a light method is developed for manipulating a droplet to make it behave like a submarine. This light method enables flexible 3D transportation, stable suspension, and floating of a droplet, which can be freely altered. It is demonstrated that the localized photothermal effect induced thermocapillary flow in the water droplet/oil phase is responsible for energizing and manipulating the droplet. With such remarkable motility, the light-fueled submarine-like droplet successfully realizes various functions such as the acid-base detection, particle capture and transportation, and target crystal collection, dissolution and transportation. It is demonstrated that the light-fueled submarine-like droplet shows promising perspective for long-sought precise droplet manipulation in various applications.
研究领域:
生物工程
·
医学诊断
·
药物递送
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产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2018
·Vol. 25
·期 20
·20206-20216
·
IF 2.8
Wang Peifang,Guo Xiang,Rao Lei,Wang Chao,Guo Yong,Zhang Lixin
A TiO 2 /g-C 3 N 4 composite photocatalytic film was prepared by in situ synthesis method and its photocatalytic capability under weak-visible-light condition was studied. The co-precursor with different ratio of melamine and TiO 2 sol-gel precursor were treated using ultrasonic mixing, physical deposition, and co-sintering method to form the smooth, white-yellow, and compact TiO 2 /g-C 3 N 4 composite films. The prepared TiO 2 /g-C 3 N 4 materials were characterized by SEM, TEM, EDS, XRD, BET, VBXPS, and UV-vis diffuse reflectance spectra. The results of composite showed that TiO 2 and g-C 3 N 4 have close interfacial connections which are favorable to charge transfer between these two semiconductors with suitable band structure, g-C 3 N 4 retard the anatase-to-rutile phase transition of TiO 2 significantly, the specific surface area were increased with g-C 3 N 4 ratio raised. Under weak-light irradiation, composite films photocatalytic experiments exhibited RhB removal efficiency approaching 90% after three recycles. Powders suspension degradation experiments revealed the removal efficiency of TiO 2 /g-C 3 N 4 (90.8%) was higher than pure TiO 2 (52.1%) and slightly lower than pure g-C 3 N 4 (96.6%). By control experiment, the enhanced photocatalysis is ascribed to the combination of TiO 2 and g-C 3 N 4 , which not only produced thin films with greater stability but also formed heterojunctions that can be favorable to charge transfer between these two semiconductors with suitable band structure. This study presents the potential application of photocatalytic film in the wastewater treatment under weak-light situation.
研究领域:
材料科学
·
环境科学
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产品关联
DOI
PubMed
高影响因子
Advanced Materials Interfaces
·
2022
·Vol. 10
·期 6
·2201938
·
IF 6.389
Yaoyu Liu,Xixi Zheng,Zongshuai Ji,Tianyu Wang,Haixia Yu,Bing Teng,Shaohua Ji
The zero-dimensional perovskite-like derivative Cs 3 Cu 2 X 5 (X = Cl, Br, I) with self-trapped excitons (STEs) photoluminescence (PL) has attracted tremendous interest in the field of optoelectronics. Nonetheless, it is challenging for Cs 3 Cu 2 Br 5 material to attain full visible spectrum emission and prevent light-induced photochemical damage to the retina (blue light hazard) in applications. Herein, Mn 2+ is chosen as the dopant to alloy into Cs 3 Cu 2 X 5 via a one-step solid state synthesis method. Significantly, the series of Mn 2+ -doped show the emission peak of 460 nm STEs and the emission peak of 550 nm Mn 2+ . More importantly, the high energy absorption of Mn 2+ facilitates the transfer of exciton energy, contributing to a reduction in blue emission peak at 460 nm. Simultaneously, ≈17.5% of Mn 2+ is alloyed into the Cs 3 Cu 2 X 5 lattice to induce the energy transfer channels from the Cs 3 Cu 2 X 5 host to the Mn 2+ guest to lead to the emission of Mn 2+ , which broadens emission spectrum (400–620 nm) and realizes 80% reduction of the blue emission peak at 460 nm. Additionally, a white light-emitting diodes can decrease the blue emission band via 71.45% and an ultrahigh color rendering index (CRI) of 94.5 is produced using the 17.5% Mn 2+ : Cs 3 Cu 2 X 5 perovskite-like derivative powder material.
研究领域:
光学
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材料科学
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生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2023
·Vol. 13
·期 2
·355
·
IF 5.3
Longshi Rao,Bin Sun,Yang Liu,Guisheng Zhong,Mingfu Wen,Jiayang Zhang,Ting Fu,Shuangxi Wang,Fengtao Wang,Xiaodong Niu
Inorganic lead halide perovskite is one of the most excellent fluorescent materials, and it plays an essential role in high-definition display and visible light communication (VLC). Its photochromic properties and stability determine the final performance of light-emitting devices. However, efficiently synthesizing perovskite with high quality and stability remains a significant challenge. Here, we develop a facile and environmentally friendly method for preparing high-stability and strong-emission CsPbBr3/Cs4PbBr6composites using ultrasonication and liquid paraffin. Tuning the contents of liquid paraffin, bright-emission CsPbBr3/Cs4PbBr6composite powders with a maximum PLQY of 74% were achieved. Thanks to the protection of the Cs4PbBr6matrix and liquid paraffin, the photostability, thermostability, and polar solvent stability of CsPbBr3/Cs4PbBr6-LP are significantly improved compared to CsPbBr3quantum dots and CsPbBr3/Cs4PbBr6composites that were prepared without liquid paraffin. Moreover, the fabricated CsPbBr3/Cs4PbBr6-LP-based WLEDs show excellent luminescent performance with a power efficiency of 129.5 lm/W and a wide color gamut, with 121% of the NTSC and 94% of the Rec. 2020, demonstrating a promising candidate for displays. In addition, the CsPbBr3/Cs4PbBr6-LP-based WLEDs were also demonstrated in a VLC system. The results suggested the great potential of these high-performance WLEDs as an excitation light source to achieve VLC.Keywords:ultrasonication;liquid paraffin;CsPbBr3/Cs4PbBr6;white-light-emitting diodes;visible light communication
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Nano Materials
·
2022
·
IF 6.14
Qiurui Han,Wenjun Xu,Chunyu Ji,Gaoyang Xiong,Changsheng Shi,Dongming Zhang,Wenquan Shi,Yuxiang Jiang,Zhili Peng
The preparation of multicolor and white light-emitting carbon dots (CDs) is of both significant importance and challenging for their applications as white phosphors for light-emitting diodes (LEDs). In this report, a facile reaction system that is capable of preparing both multicolor and white light-emitting CDs was disclosed. In this system, three CDs emitting yellow, red, and green lights were prepared, and monochromatic LEDs were constructed using these multicolor CDs. Most importantly, single-component white light-emitting CDs with CIE coordinates of (0.33, 0.33) were also prepared. The white light-emitting CDs were applied as single-component white phosphors for the fabrication of white LEDs. The white LEDs constructed demonstrated excellent performance, emitting warm white light (CCT = 3723 K) with CIE coordinates of (0.39, 0.37) and an extremely high color-rendering index of 91.5, which should find favorable applications for indoor illumination.
研究领域:
材料科学
·
光学工程
✓ 已验证
DOI
高影响因子
DALTON TRANSACTIONS
·
2018
·Vol. 47
·期 16
·5652-5659
·
IF 4.099
Yong-Jun Yuan,Gaoliang Fang,Daqin Chen,Yanwei Huang,Ling-Xia Yang,Da-Peng Cao,Jingjing Wang,Zhen-Tao Yu,Zhi-Gang Zou
Expanding the photoresponse range of TiO2-based photocatalysts is of great interest for photocatalytic H2 production. Herein, noble-metal-free CuInS2 quantum dots were employed as a novel inorganic dye to expand the visible light absorption of TiO2/MoS2 for solar H2 generation. The as-prepared CuInS2/TiO2/MoS2 photocatalysts exhibit broad absorption from the ultraviolet to near-infrared region. Under visible light irradiation (λ > 420 nm), the CuInS2/TiO2/MoS2 photocatalyst with 0.6 mmol g−1 CuInS2 and 0.5 wt% MoS2 showed the highest H2 evolution rate with a value of 1034 μmol h−1 g−1. Moreover, a considerable H2 evolution rate of 141 μmol h−1 g−1 was obtained under the irradiation of the optimized CuInS2/TiO2/MoS2 photocatalyst with >500 nm light. The reaction mechanism of the CuInS2/TiO2/MoS2 photocatalyst for photocatalytic H2 evolution was investigated in detail by photoluminescence decay study, and the results showed that the photoexcited electrons of CuInS2 can be transferred efficiently through TiO2 to MoS2 and then react with the absorbed protons to generate H2. The reported sensitization strategy tremendously improves the visible light absorption capacity and the photocatalytic performance of TiO2-based photocatalysts.
研究领域:
材料科学
·
光催化
·
能源化学
·
纳米材料
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半导体物理
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太阳能转化
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2018
·Vol. 136
·期 9
·47140
·
IF 1.901
Y. Xiao,B. Wu,Z. Liu,L. Jiang,J. Lei,R. Wang
We prepared a temperature-responsive polyurethane (PU) film with reversible visible light transmittance change, which was opaque at room temperature and became transparent when the temperature rised. The PU film has very low visible light transmittance of 1.4% at room temperature. At 45 °C, the PU film has relatively high transmittance of 66.7% looking translucent. When the temperature goes to 50 °C or above, the transmittance is more than 80% and the PU film is transparent. The reason for this interesting phenomenon about visible light transmittance change was illustrated by polarizing optical microscope and differential scanning calorimetry. While ultraviolet light transmittance of the PU film is very low at all time. Moreover, this PU film has excellent mechanical performance in a wide temperature range. We suppose this PU film has potential applications in many fields such as tunable optical devices or coating materials with smart temperature responsivity. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136 , 47140.
研究领域:
材料科学
·
高分子科学
·
智能响应材料
·
光学涂层
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2018
·
IF 8.097
Shiliang Mei,Xiaoyan Liu,Wanlu Zhang,Ran Liu,Lirong Zheng,Ruiqian Guo,Pengfei Tian
This work proposes a high-bandwidth white-light system consisting of a blue gallium nitride (GaN) micro-LED (μLED) exciting yellow-emitting CsPbBr1.8I1.2 perovskite quantum dots (YQDs) for high-speed real-time visible light communication (VLC). The packaged 80 μm × 80 μm blue-emitting μLED has a modulation bandwidth of ∼160 MHz and a peak emission wavelength of ∼445 nm. The achievable bandwidth of the white-light system is up to 85 MHz in the absence of filters and equalization technology. Meanwhile, the bandwidth of the YQDs as a color converter is as high as 73 MHz with the blue GaN μLED as the pump source. A maximum data rate of 300 Mbps can be achieved by taking advantage of the high bandwidth of the white-light system using the non-return-to-zero on–off keying (NRZ-OOK) modulation scheme. The resultant bit-error rate is 2.0 × 10–3, well beneath the forward error correction criterion of 3.8 × 10–3 required for error-free data transmission. In addition, the YQDs which we proposed as a color converter possess high stability for VLC. After half a year, the achievable bandwidths of the white-light system and the YQDs are still up to 83 and 70 MHz, respectively. This study provides the direction of developing high-bandwidth white-light system for both high-efficiency solid-state lighting and high-speed VLC.
研究领域:
光学
·
通信工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
npj Flexible Electronics
·
2024
·Vol. 8
·期 1
·1-8
·
IF 12.3
Zhang Jiaxue,Lu Qianying,Wu Ming,Sun Yuping,Wang Shaolei,Wang Xiaoliang,Lu Ming-Hui,Kong Desheng
Stretchable displays that combine light-emitting capabilities with mechanical compliance are essential building blocks of next-generation wearable electronics. However, their widespread applications are currently limited by complex device architecture, limited pixel density, and immature fabrication processes. In this study, we present the device design and material developments of intrinsically stretchable light-emitting drawing displays that can show arbitrary hand-drawing features. The alternating-current electroluminescent display uses a simplified architecture comprising coplanar interdigitated liquid metal electrodes, an electroluminescent layer, and a dielectric encapsulation layer. Ink patterns on the device are coupled with the interdigitated electrodes under alternating voltage stimulations, generating localized electric fields for bright emissions. Various inks are prepared for painting, stamping, and stencil printing. Arbitrary luminous features on the devices can be either long-lasting or transient in characteristics. These skin-like devices are made entirely of compliant materials that can withstand bending, twisting, and stretching manipulations. Due to the excellent mechanical deformability, the drawing displays can be conformally laminated on the skin as body-integrated optoelectronic communication devices for graphic information.
研究领域:
材料科学
·
电子工程
·
可穿戴技术
·
光电子学
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED MATERIALS
·
2026
·Vol. 38
·期 20
·e22384
·
IF 29.1
Kunfeng Liu,Rong Huang,Wanyuan Li,Jingsong Yao,Dapeng Lei,Guangdong Yang,Zhuochen Huang,Li Chen,Hao Sun,Ze Xiong,Jizhuang Wang,Jinyao Tang,Dan Li
Light-driven micro/nanorobots (LMNRs) offer on-demand propulsion governed by light direction, wavelength, and polarization, yet their architectures and navigation behaviors have been constrained by limited fabrication strategies. Here, we present a general and scalable strategy for geometry-programmable silicon LMNRs based on plasma-enhanced chemical vapor deposition. This approach yields libraries of silicon microrobots with deterministically tailored 0D, 1D, 2D, and 3D geometries, greatly expanding the accessible design space. Under visible and near-infrared illumination, the LMNRs exhibit efficient propulsion and precise, light-programmable trajectories, with guidance further augmented by magnetic steering. Surface functionalization with bacteriophages imparts species-selective bacterial capture, enabling targeted biointeractions. By integrating structural programmability, multimodal actuation, and bioselective interfaces in a silicon platform, this work establishes a versatile foundation for multifunctional LMNRs, paving the way for micro/nanorobotic applications in precision therapy, environmental monitoring, and micro/nano-manufacturing.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Electronic Materials
·
2021
·
IF 3.314
Xiu Li,Chen Chen,Faqiang Zhang,Hanliang Fang,Xintang Huang,Zhiguo Yi
Developing photostrictive materials with wide visible light response and desirable photostriction strength remains a great challenge in view of practical applications. Ferrites with rich physical and chemical properties have great potential in this regard. Here, the photostrictive performances of three ferrite materials, CdFe2O4, CaFe2O4, and YFeO3, with different crystal structures are systematically investigated. A large photostriction around 0.1% with a decent photostrictive efficiency of ∼10–11 m3/W is obtained for all the three ferrites under 405, 520, and 655 nm laser illumination. Further investigation reveals that the photothermal effect-induced expansion and the light-induced nonthermal part contribute almost equally to the measured shape deformation. In situ X-ray diffraction with external laser illumination in conjunction with the laser power-dependent Raman spectra analysis indicates that the strong photostriction is not a uniform deformation microscopically, which is closely related to the various degrees of response of the lattice planes to light and mainly attributed to the light-induced distortion of FeO6 octahedrons. Further analysis suggests a bond length rule to account for both the difference between their photostrictive performances and the screening of materials.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）