|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Properties and Morphology of TiN Films Deposited by Atomic Layer Deposition显示文摘In this study,TiN films were deposited on SiO2 substrates by Atomic Layer Deposition(ALD) using TiCl4and NH3 as precursors. Properties and morphology of the TiN films were characterized by different methods.Using Grazing Incidence X-Ray Diffraction(GIXRD),TiN films demonstrated polycrystalline structure with(111)preferred orientation. Film thickness was measured by Spectroscopic Ellipsometry(SE) and a stable growth rate of 0.0178 nm/cycle was reached after 500 deposition cycles,which was consistent with the essence of ALD as a surface-saturated self-limiting reaction. Film resistivity measured by a four-point probe continuously decreased with increasing deposition cycles until it reached the minimum value of 300μΩ cm at 5000 deposition cycles with a thickness of 87.04 nm. The surface roughness and morphology of the TiN films at different deposition cycles ranging from 50 to 400 were analyzed by Atomic Force Microscopy(AFM). The AFM results indicated that the initial film growth follows the Stranski-Krastanov mode. | Siyi Xie Jian Cai Qian Wang Lu Wang Ziyu Liu | 2014 | Tsinghua Science and Technology2014，19，2： | 4 |
| 2 | Effect of current emission abatement strategies on air quality improvement in China:A case study of Baotou,a typical industrial city in Inner Mongolia显示文摘The national Air Pollution Prevention and Control Action Plan required significant decreases in PM_(2.5) levels over China.To explore more effective emission abatement strategies in industrial cities,a case study was conducted in Baotou to evaluate the current national control measures.The total emissions of SO_2,NO_X,PM_(2.5) and NMVOC(non-methane volatile organic compounds) in Baotou were 211.2 Gg,156.1 Gg,28.8 Gg,and 48.5 Gg,respectively in 2013,and they would experience a reduction of 30.4%,26.6%,15.1%,and 8.7%,respectively in 2017 and 39.0%,32.0%,24.4%,and 12.9%,respectively in2020.The SO_2,NO_Xand PM_(2.5) emissions from the industrial sector would experience a greater decrease,with reductions of 37%,32.7 and 24.3%,respectively.From 2013 to 2020,the concentrations of SO_2,NO_2,and PM_(2.5) are expected to decline by approximately 30%,10% and 14.5%,respectively.The reduction rate of SNA(sulfate,nitrate and ammonium)concentrations was significantly higher than that of PM_(2.5) in 2017,implying that the current key strategy toward controlling air pollutants from the industrial sector is more powerful for SNA.Although air pollution control measures implemented in the industrial sector could greatly reduce total emissions,constraining the emissions from lower sources such as residential coal combustion would be more effective in decreasing the concentration of PM_(2.5) from 2017 to 2020.These results suggest that even for a typical industrial city,the reduction of PM_(2.5) concentrations not only requires decreases in emissions from the industrial sector,but also from the low emission sources.The seasonal variation in sulfate concentration also showed that emission from coal-burning is the key factor to control during the heating season. | Xionghui Qiu Lei Duan Siyi Cai Qian Yu Shuxiao Wang Fahe Chai Jian Gao Yanping Li Zhaoming Xu | 2017 | Journal of Environmental Sciences2017，29，7： | 2 |
| 3 | High-fidelity and clean nanotransfer lithography using structure-embedded and electrostatic-adhesive carriers显示文摘Metallic nanostructures are becoming increasingly important for both fundamental research and practical devices.Many emerging applications employing metallic nanostructures often involve unconventional substrates that are flexible or nonplanar,making direct lithographic fabrication very difficult.An alternative approach is to transfer prefabricated structures from a conventional substrate;however,it is still challenging to maintain high fidelity and a high yield in the transfer process.In this paper,we propose a high-fidelity,clean nanotransfer lithography method that addresses the above challenges by employing a polyvinyl acetate(PVA)film as the transferring carrier and promoting electrostatic adhesion through triboelectric charging.The PVA film embeds the transferred metallic nanostructures and maintains their spacing with a remarkably low variation of<1%.When separating the PVA film from the donor substrate,electrostatic charges are generated due to triboelectric charging and facilitate adhesion to the receiver substrate,resulting in a high large-area transfer yield of up to 99.93%.We successfully transferred the metallic structures of a variety of materials(Au,Cu,Pd,etc.)with different geometries with a<50-nm spacing,high aspect ratio(>2),and complex 3D structures.Moreover,the thin and flexible carrier film enables transfer on highly curved surfaces,such as a single-mode optical fiber with a curvature radius of 62.5μm.With this strategy,we demonstrate the transfer of metallic nanostructures for a compact spectrometer with Cu nanogratings transferred on a convex lens and for surface-enhanced Raman spectroscopy(SERS)characterization on graphene with reliable responsiveness. | Zhuofei Gan Jingxuan Cai Zhao Sun Liyang Chen Chuying Sun Junyi Yu Zeyu Liang Siyi Min Fei Han Yu Liu Xing Cheng Shuhui Yu Dehu Cui Wen-Di Li | 2023 | Microsystems & Nanoengineering2023，9，1： | 1 |
| 4 | Color-tunable hypersensitive temperature sensor based on metal organic framework doped with Eu^(3+)and Dy^(3+)via phonon-assisted energy transfer显示文摘In this work,catena-[(μ-benzene-1,3,5-tricarboxylato)-(1,10-phenanthroline)-(N,N-dimethylfo rmamide)-gadolinium(ⅲ)-N,N-dimethylformamide solvate](denoted as Gd-MOF)co-doped with Eu^(3+)and Dy^(3+)was successfully synthesized.The entire X-ray diffraction peaks of the sample match well with the GdMOF phase.A detailed characterization by inductively coupled plasma mass spectrometry(ICP-MS)shows that the actual concentration is basically consistent with the design concentration.The temperature sensing properties of Gd-MOF:Eu^(3+),Dy^(3+)were analyzed by temperature-dependent fluorescence spectra from 213 to 453 K.As temperature rises,the emission color of Gd-MOF:Eu^(3+),Dy^(3+)changes from yellow to red.The relative sensitivity reaches a maximum of 5.87%/K at 383 K in the Gd-MOF:1%Eu^(3+),30%Dy^(3+)sample.The high relative sensitivity of this MOF is due to the phonon-assisted energy transfer from Dy^(3+)to Eu^(3+),which is proved via fluorescence decay curves and fluoresce nce spectra.The major route of this energy transfer is^(4)F_(9/2)(Dy^(3+))→^(5)D_(1)(Eu^(3+)). | Mingze Zhang Lin Lin Zhuohong Feng Zhezhe Wang Yuanming Yang Wenjun Ma Jieyi Cai Pan Lu Siyi Jia Zhiqiang Zheng | 2023 | Journal of Rare Earths2023，41，11： | 1 |
| 5 | Influence of particle size on pyrolysis and gasification performance of municipal solid waste in a fixed bed reactor显示文摘 | Siyi Luo Bo Xiao Zhiquan Hu Shiming Liu Yanwen Guan Lei Cai | 2010 | Bioresource Technology2010，，16： | 1 |
| 6 | Emission trends and mitigation options for air pollutants in East Asia显示文摘 | WANG Shuxiao ZHAO Bin CAI Siyi | 2014 | Atmos Chem Phy Discuss2014，14，2： | 1 |
| 7 | Excellent magnetic softness-magnetization synergy and suppressed defect activation in soft magnetic amorphous alloys by magnetic field annealing显示文摘Fe-based amorphous alloys with high saturation magnetic flux density(B_(s))are increasingly attractive from both scientific and technological points of view,however,they usually suffer from the trade-off between magnetization and softness.In this work,we explore the soft magnetic properties(SMPs),magnetic and atomic structures,and defect activation during creep deformation of as-quenched and annealed Fe_(82.65-x)Co_(x)Si_(2)B_(14)Cu_(1.35)(x=0-20)amorphous alloys(AAs).Improved magnetic softness-magnetization synergy has been realized in all these alloys by field annealing.Particularly,superb SMPs with superhigh B_(s) of 1.86 T,low coercivity of 1.2 A/m and high effective permeability of 16300 are obtained in the Fe_(66.65)Co_(16)Si_(2)B_(14)Cu_(1.35) AA.The locally regularized arrangement of domains,homogenized structure with less structural/magnetic defects and suppressed crystal-like ordering by field annealing contribute synergistically to the superb SMPs.Besides,the relaxation time spectra obtained from creep deformation indicate less liquid-like and solid-like defects activated in the field-annealed AA,which is correlated with the structural homogenization and superb SMPs.This work provides new and comprehensive insight into the interplay among external field,heterogeneous structure,SMPs and defect activation of Fe-based AAs,and offers a promising pathway for softening amorphous alloys with high Bs. | Qiang Luo Donghui Li Mingjuan Cai Siyi Di Zhengguo Zhang Qiaoshi Zeng Qianqian Wang Baolong Shen | 2022 | Journal of Materials Science & Technology2022，，21： | 0 |
| 8 | The identification of PAX7 variants and a potential role of muscle development dysfunction in congenital scoliosis显示文摘Dear Editor,Congenital scoliosis(CS)is a spinal malformation charac-terized by failure of vertebral formation or segmentation,or a mix of these deformities,resulting in longitudinal and rotational imbalance,and affects 0.05-0.1%of new-borns(Wu et al.2015).It is generally understood that the development of CS has an underlying genetic basis.Specifically,genes related to somite regulation or osteo-genesis during embryonic development are believed to be responsible for the vertebral malformations observed in CS patients(Pourquie 2011). | Muchuan Wang Ziquan Li Sen Zhao Zhifa Zheng Yipeng Wang Guixing Qiu Zhihong Wu Nan Wu Terry Jianguo Zhang Siyi Cai | 2022 | Cell Regeneration2022，11，1： | 0 |
| 9 | Functionalizable and Recyclable Aliphatic Polycarbonates Derived from Biomass Feedstocks and CO_(2)显示文摘Two bio-based seven-membered cyclic carbonate monomers M1 and M2 were synthesized in three steps from myrcene,which could produce polycarbonates via ring-opening polymerization using metal or organic catalysts.The functionalizable olefin moieties in resulting polycarbonates have driven post-polymerization modifications via radical cross-linking and hydrogenation,enabling the resulting polymers with tunable thermal properties.More importantly,the chemical recycling of P(M)s was achieved through'monomer→polymer⇄dimer',which presented a platform for the synthesis of chemically recyclable biobased polycarbonates. | WU Yanchen FAN Huazhong SHAN Siyi WANG Siqi CAI Zhongzheng ZHU Jian-Bo | 2023 | Chemical Research in Chinese Universities2023，39，5： | 0 |
| 10 | Research on the Impact of VR Technology Application on Red Tourism in Jiangxi Province显示文摘Jiangxi Province is rich in red tourism resources.However,its current situation in the development of red culture and the combination of tourism and VR technology is not optimistic.This paper takes the subsequent development of Jiangxi red tourism as the research object and looks through the historical background of Jiangxi red resources to analyze the current situation of the Jiangxi red tourism.In the meantime,it explores and investigates the current situation of the development of VR technology in Jiangxi,the degree of the combination between theory with practice and the possibility of VR technology application.On this basis,it studies how to reasonably apply VR technology to promote the sustainable development of red tourism in Jiangxi,how to pull the economic growth of Jiangxi,and how to achieve a win-win scenario for the modern economy and traditional culture of Jiangxi. | WANG Keyi LU Yang CAI Yiwen CHEN Wenjie ZHOU Guang ZHOU Siyi | 2022 | Journal of Tourism and Hospitality Management2022，10，2： | 0 |
| 11 | Cooperation and Contract Design in Project Management with Outsourcing显示文摘We study a project management problem where the prime contractor needs to outsource tasks to subcontractors with the required resources.Successful execution of the project requires proper coordination among the subcontractors,as well as contract design by the prime contractor to incentivize the subcontractors.By modeling the subcontractors’coordination problem as a cooperative game,we develop a profit sharing scheme to facilitate the subcontractors’cooperation.We consider two contract designs for the prime contractor:a uniform contract across all subcontractors,and a nonuniform one that customizes incentives for each subcontractor.We propose efficient algorithms to solve the implicit optimization problems for optimal contract parameters.Computational experiments show that the pooling effect of subcontractors’cooperation mitigates the negative impact of poor estimates about the crashing cost and resource availability.We observe three unexpected results through the randomized computation experiments:(i)the subcontractors’profits may decrease if they provide false information;(ii)it is safer for the prime contractor to overestimate subcontractors’crashing costs than underestimate them;and(iii)uniform contracts deliver more project profit for the subcontractors in the coalitions. | Xiaoqiang Cai Nicholas G.Hall Siyi Wang Feng Zhang | 2023 | Journal of Systems Science and Systems Engineering2023，32，1： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员