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Highly adaptive and broadband triboelectric energy harvester with stretching silicone rubber strip for variable harmonic frequency vibration

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Nano Research 2024年第5期17卷 4089-4099页

作者： Taili Du Dianlong Shen Ziyue Xi Hongyong Yu fangyang Dong Cong Zhao Meixian Zhu Yongjiu Zou Peiting Sun Minyi Xu Dalian Key Laboratory of Marine Micro/Nano Energy and Self-powered Systems Marine Engineering CollegeDalian Maritime UniversityDalian 116026China Collaborative Innovation Research Institute of Autonomous Ship Dalian Maritime UniversityDalian 116026China

An enormous number of wireless sensing nodes(WSNs)are of great significance for the Internet of Things(IoT).It is tremendously prospective to realize the in-situ power supply of WSNs by harvesting unutilized mechanical vibration energy.A harmonic silicone rubber triboelectric nanogenerator(HSR-TENG)is developed focusing on ubiquitous constant working frequency *** unique design of the strip serving as a flexible resonator realizes both soft contact and high and broadband *** significant factors influencing the 1^(st)-order vibration mode of the strip are developed for realizing the harmonic frequency adaptation to external *** surface treatment of the strip improves the output performance of HSR-TENG by 49.1%as well as eliminates the adhesion *** HSR-TENG is able to achieve a voltage output bandwidth of 19 Hz under a vibration strength of 3.0,showing its broadband *** peak power density of 153.9 W/m^(3)is achieved and 12×0.5 W light-emitting diodes(LEDs)are successfully illuminated by the *** can continuously power a temperature sensor by harvesting the actual compressor vibration *** brief,the HSR-TENG provides a promising way for constant frequency vibration energy harvesting,so as to achieve in-situ power supply for the WSNs in the vicinity.

关键词： vibration energy harvesting triboelectric nanogenerator flexible silicone rubber strip harmonic vibration broadband

A two-dimension laminar composite protective layer for dendrite-free lithium metal anode

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Journal of Energy Chemistry 2021年第5期30卷 391-394页

作者： Xiang-Qun Xu Rui Xu Xin-Bing Cheng Ye Xiao Hong-Jie Peng Hong Yuan fangyang Liu School of Metallurgy and Environment Central South UniversityChangsha 410083HunanChina Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical EngineeringTsinghua UniversityBeijing 100084China Advanced Research Institute of Multidisciplinary Science Beijing Institute of TechnologyBeijing 100081China Department of Chemical Engineering Stanford UniversityStanfordCA 94305 USA

Lithium(Li)metal anodes with the high theoretical specific capacity(3860 mAh g^(-1))and most negative reduction potential(-3.04 V *** hydrogen electrode)have been considered as an ultimate choice for energy storage devices with high energy density[1-4].However,the practical applications of Li metalbased batteries(LMBs)are confronted with two tough issues:Li dendrite growth induced by uneven Li depositions and unstable solid electrolyte interphase(SEI)(Fig.1a)[5,6].

关键词： Lithium metal anode Artificial protective layer 2D materials Vermiculite sheets Laminar arrangement

In situ Rb-Sr dating of mica by LA-ICP-MS/MS

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Science China Earth Sciences 2023年第11期66卷 2603-2621页

作者： Chao HUANG Hao WANG Wenbei SHI Jinfeng SUN fangyang HU Lei XU Yueheng YANG Shitou WU Liewen XIE Jinhui YANG State Key Laboratory of Lithospheric Evolution Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China Key Laboratory of Mineral Resources Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China Innovation Academy for Earth Science Chinese Academy of SciencesBeijing 100029China

Mica exhibits a relatively high Rb/Sr ratio and possesses a closure temperature for the Rb-Sr isotope system that is higher than the ore-forming temperature range of low-to medium-temperature ***,utilizing the laser ablation(LA)technique for in situ Rb-Sr dating in mica constitutes a significant methodology for resolving the mineralization chronology of low-to medium-temperature hydrothermal ore *** this study,we employed a combination of a triple quadrupole inductively coupled plasma mass spectrometer(ICP-MS/MS)and 193 nm LA system with SF_6as the reaction gas to achieve interference removal of~(87)Rb~+on~(87)Sr~+.We then developed an in situ Rb-Sr dating method for *** addition,an investigation was conducted to identify the factors that could influence the analytical accuracy of the ***,we applied the developed method to carry out in situ Rb-Sr dating for the ZBH-25 biotite,a national primary reference material(GBW04439)for K-Ar dating,and yielded a younger age(ca.12%,relative standard deviation,RSD)than the reference K-Ar age when using NIST SRM 610 as the reference material for external *** finding indicated that in the process of determining Rb-Sr ages for mica by LA-ICP-MS/MS,there are significant matrix effects between the NIST SRM 610 and the mica samples,resulting in inaccurate Rb-Sr *** response to this issue,a two-step calibration method is proposed *** on external calibration using NIST SRM 610,ZBH-25 biotite is employed as a second external reference material to perform a second calibration of the sample data to correct the matrix effect between the glass standards and the natural mica samples,thereby improving the accuracy of Rb-Sr dating by LA-ICP-MS/*** the proposed method,in situ Rb-Sr dating by LA-ICP-MS/MS was performed on mica samples from monzonite exposed in ***,New South Wales,Australia,porphyritic granodiorite in Fangshan pluton and albionite granite in the Gy

关键词： Mica In situ analysis by laser ablation Rb-Sr dating Triple quadrupole mass spectrometer Matrix effect

11.39%efficiency Cu_(2)ZnSn(S,Se)_(4) solar cells from scrap brass

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SusMat 2022年第2期2卷 206-211页

作者： Yining Pan Chang Yan Xiangyun Zhao Wangxian Chen Kaiwen Sun Qing Wu Liming Ding fangyang Liu School of Metallurgy and Environment Central South UniversityChangshaP.R.China Information and Network Centre Central South UniversityChangshaP.R.China Center for Excellence in Nanoscience(CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication(CAS)National Center for Nanoscience and TechnologyBeijingP.R.China

Kesterite Cu2ZnSn(S,Se)4(CZTSSe)is one of the most promising next-generation thin-film photovoltaic materials due to its environmental friendliness and earthabundant constitutions,excellent optoelectronic properties(high absorption coefficient>104/cm and tunable band gap 1.0–1.5 eV)and high theoretical efficiency(32%).1,2 In 2014,12.6%3 efficiency was achieved by the IBM group using the hydrazine *** on the sputtering process,12.62%4 efficiency for CZTSSe and 12.5%5 efficiency for CZTSe have been achieved in recent ***ever,the highest efficiency has stuck around 12.6%for several ***,a breakthrough with certified 13%power conversion efficiency(PCE)has been demonstrated for CZTSSe thin-film solar cells,surpassing the dust-covered efficiency record since 2014.3,6 Along with the efficiency advancement of kesterite solar cells,a cost-effective fabrication process with low carbon footprint plays an increasingly important role considering the near-future industrialisation of this kind of solar cell with low energy payback time.

关键词： CZTSSe kesterite scrap brass

Effect of Progressive Substitution of Cement and Lime by Powdered Shells Used as a Curing Agent for Dredged Soil in a Port Area

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期 88-102页

作者：孙阳 WANG Faxin SU Yaying LI Yiwei he Feng College of Harbour Coastal and Offshore Engineering Hohai University Huai'an Research Institute Hohai University Jiangsu fangyang Industrial Investment Corp. Ltd.

This study aimed to address the challenges of solid waste utilization,cost reduction,and carbon reduction in the treatment of deep-dredged soil at Xuwei Port in Lianyungang city of *** research in this area was ***,a curing agent made from powdered shells was used to solidify the dredged soil in *** employed laboratory orthogonal tests to investigate the physical and mechanical properties of the powdered shell-based curing *** was collected by conducting experiments to assess the role of powdered shells in the curing process and to determine the optimal ratios of powdered shells to solidified soil for different *** development of strength in solidified soil was studied in both seawater and pure water *** study revealed that the strength of the solidified soil was influenced by the substitution rate of powdered shells and their interaction with *** cement content had a positive effect on *** high-strength solidified soil,the recommended ratio of wet soil:cement:lime:powdered shells were 100:16:4:4,while for low-strength solidified soil,the recommended ratio was 100:5.4:2.4:***,under appropriate conditions,improved short-term strength by promoting the formation of expansive ettringite minerals that contributed to cementation and *** findings suggest that the combination of cement and powdered shells is synergistic,positively affecting the strength of solidified *** recommended ratios provide practical guidance for achieving desired strength levels while considering factors such as cost and carbon *** role of seawater in enhancing short-term strength through crystal formation is noteworthy and can be advantageous for certain *** conclusion,this research demonstrates the potential of using a powdered shell-based curing agent for solidifying dredged soil in an environmentally friendly and cost-effective *** recommended ratios for different str

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4‑Terminal Inorganic Perovskite/Organic Tandem Solar Cells Offer 22%Efficiency

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Nano-Micro Letters 2023年第2期15卷 172-181页

作者： Ling Liu Hanrui Xiao Ke Jin Zuo Xiao Xiaoyan Du Keyou Yan Feng Hao Qinye Bao Chenyi Yi fangyang Liu Wentao Wang Chuantian Zuo Liming Ding Center for Excellence in Nanoscience(CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication(CAS)National Center for Nanoscience and TechnologyBeijing 100190People’s Republic of China School of Metallurgy and Environment Central South UniversityChangsha 410083People’s Republic of China School of Physics State Key Laboratory of Crystal MaterialsShandong UniversityJinan 250100People’s Republic of China School of Environment and Energy South China University of TechnologyGuangzhou 510000People’s Republic of China School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 610054People’s Republic of China School of Physics and Electronic Science East China Normal UniversityShanghai 200241People’s Republic of China State Key Laboratory of Power System Department of Electrical EngineeringTsinghua UniversityBeijing 100084People’s Republic of China School of Materials Science and Engineering Zhejiang Sci-Tech UniversityHangzhou 310018People’s Republic of China Key Laboratory of Semiconductor Materials Science Beijing Key Laboratory of Low Dimensional Semiconductor Materials and DevicesInstitute of SemiconductorsChinese Academy of SciencesBeijing 100083People’s Republic of China

After fast developing of single-junction perovskite solar cells and organic solar cells in the past 10 years,it is becoming harder and harder to improve their power conversion *** solar cells are receiving more and more attention because they have much higher theoretical efficiency than single-junction solar *** device performance has been achieved for perovskite/silicon and perovskite/perovskite tandem solar cells,including 2-terminal and 4-terminal ***,very few studies have been done about 4-terminal inorganic perovskite/organic tandem solar *** this work,semi-transparent inorganic perovskite solar cells and organic solar cells are used to fabricate 4-terminal inorganic perovskite/organic tandem solar cells,achieving a power conversion efficiency of 21.25%for the tandem cells with spin-coated perovskite *** using drop-coating instead of spin-coating to make the inorganic perovskite films,4-terminal tandem cells with an efficiency of 22.34%are *** efficiency is higher than the reported 2-terminal and 4-terminal inorganic perovskite/organic tandem solar *** addition,equivalent 2-terminal tandem solar cells were fabricated by connecting the sub-cells in *** stability of organic solar cells under continuous illumination is improved by using semi-transparent perovskite solar cells as filter.

关键词： 4-Terminal tandem solar cells Inorganic perovskite solar cells Organic solar cells Semitransparent Drop-coating

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基于互联网图像集的室外场景建模技术综述

计算机辅助设计与图形学学报 2012年第1期24卷 29-36页

作者：沈方阳齐越北京航空航天大学虚拟现实技术与系统国家重点实验室北京100191

目前在互联网上有海量的室外场景照片,它们不仅内容覆盖面广,对同一场景有大量不同视点和光照条件下的采样,而且获取成本很低.如何利用这些照片中包含的丰富场景信息,快速、方便地构造各种逼真的虚拟场景,是互联网迅猛发展给虚拟现实、... 详细信息

目前在互联网上有海量的室外场景照片,它们不仅内容覆盖面广,对同一场景有大量不同视点和光照条件下的采样,而且获取成本很低.如何利用这些照片中包含的丰富场景信息,快速、方便地构造各种逼真的虚拟场景,是互联网迅猛发展给虚拟现实、计算机图形学和计算机视觉带来的新的研究课题之一.文中分析、总结了近年来国内外互联网图像的真实场景几何建模、自然光照建模和材质反射属性建模的最新研究进展,并对其未来的发展趋势提出了一些看法.

关键词：基于图像的几何建模自然光照模型反射属性建模室外场景建模

Drop-coating produces efficient CsPbI_(2) Br solar cells

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Journal of Semiconductors 2021年第5期42卷 30-37页

作者： Hanrui Xiao Chuantian Zuo fangyang Liu Liming Ding School of Metallurgy and Environment Central South UniversityChangsha 410083China Center for Excellence in Nanoscience(CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication(CAS)National Center for Nanoscience and TechnologyBeijing 100190China

Inorganic perovskites (CsPbX_3, X=halide anion), containing no volatile organic cations, exhibit better thermal stability than organic–inorganic hybrid perovskites~([1, 2]). Among inorganic perovskites,α-Cs Pb I3(cubic phase) possesses a relatively suitable bandgap of~1.7 eV. CsPbI_3 perovskite solar cells (PSCs) have demonstrated power conversion efficiencies (PCEs) over 20%~([3-5]).

关键词： perovskite inorganic cubic

Expression of nuclear factor-kappa B and target genes in gastric precancerous lesions and adenocarcinoma:Association with helicobactor pylori cagA (+) infection

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World Journal of Gastroenterology 2004年第4期10卷 491-496页

作者： Gui-fangyang Chang-ShengDeng Yong-YanXiong Ling-LingGong Bi-ChengWang JunLuo DepartmentofPathology ZhongnanHospitalWuhanUniversityWuhan430071HubeiProvinceChina DepartmentofGastroenterology ZhongnanHospitalWuhanUniversityWuhan430071HubeiProvinceChina

AIM:To examine the expression of nuclear factor kappaB (NF-κB) and its target genes in intestinal metaplasia (IM),dysplasia (DYS) and gastric carcinoma (GC) infected with helicobacter pylori (H pylori) and to investigate the mechanism underlying Hpyloricytotoxin associated gene A(cag A) infection leading to gastric ***: Expressions of NF-κB/p65 and its target genes:c-myc, cyclinD1 and bcl-xl were immunohistochemically examined in 289 cases of gastric biopsy and resection specimens from patients with IM, DYS and GC infected with H pylori. H pylori in the above mentioned tissues was detected by Warthin-Starry stain and rapid urease *** antibody to cagA in sera of the patients was measured by ***:The positive rates of NF-κB/p65 were significantly higher in groups with cagA of IMI-Ⅱ(28/33), IM III(48/52),DYSI(27/31), DY5 Ⅱ-Ⅲ(28/32), GC(35/40) than in groups without cagA of IMI-Ⅱ(4/17), IMⅢ(3/20), DYSI(3/20),DYSⅡ-Ⅲ(6/21), GC(10/23). The expressions of c-myc,cyclinD1, and bcl-xl were significantly higher in groups with cagA of IM Ⅲ(47/52, 49/52, 46/52), DYSⅡ-Ⅲ(29/32, 26/32,25/32) than in groups without cagA of IM Ⅲ(8/20, 7/20,5/20), DYSⅡ-Ⅲ(10/21, 8/21, 3/21), which were in conformity with the expression of NF-κB in IM Ⅲ, and DYSⅡ-Ⅲ. Asignificantly higher expression level of NF-κB/p65, c-myc,cyclinD1 and bcl-xl was detected in intestinal type GC(27/28,18/28, 22/28, 24/28) than in diffuse type GC(8/12, 3/12,3/12, 6/12), ***: There may be two different molecular mechanisms in the occurrence of intestinal and diffuse type gastric carcinomas. Intestinal type gastric carcinoma is strongly associated with high expression of c-myc, cyclinD1 and bcl-xl through NF-κB/p65 activated by Hpylori *** the activity of NF-κB is an effective and promising way to prevent intestinal type gastric carcinoma.

关键词： NF-κB 胃癌癌前病变幽门螺杆菌目标基因细胞因子