检索结果-南通市图书馆

Passively Q-switched mode-locked Tm:LLF laser with a MoS_2 saturable absorber

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Optics Letters 2015年第8期13卷 70-73页

作者：邹晓冷雨欣李妍妍冯艳艳张沛雄杭寅王俊 State Key Laboratory of High Field Laser Physics Shanghai Institute of Optics and Fine MechanicsChinese Academy of Sciences Key Laboratory of Materials for High Power Lasers Shanghai Institute of Optics and Fine MechanicsChinese Academy of Sciences

A passively Q-swithched mode-locked （QML） Tm：LiLuF4 （LLF） laser with a MoS2 saturable absorber （SA） is demonstrated for the first time, to our best knowledge. For the Q-switching mode, the maximum average output power and Q-switched pulse energy are 583 mW and 41.5 μJ, respectively. When the absorbed power is greater than 7.4 W, the passively QML pulse is formed, corresponding to an 83.3-MHz frequency. The modulation depth in Q-switching envelopes is approximately 50%. Results prove that MoS2 is a promising SA for Q-switched and QML solid-state lasers.

关键词： mode Mo Passively Q-switched mode-locked Tm Tm

Extraordinary tunable dynamic range of electrochemical aptasensor for accurate detection of ochratoxin A in food samples

在线全文

学校读者我要写书评

暂无评论

Food Science and Human Wellness 2017年第2期6卷 70-76页

作者： Lin Cheng Hao Qu Jun Teng Li Yao Feng Xue Wei Chen School of Food Science and Engineering Hefei University of TechnologyHefei230009China College of Veterinary Medicine Nanjing Agricultural UniversityNanjing210095China

We report the design of a sensitive,electrochemical aptasensor for detection of ochratoxin A(OTA)with an extraordinary tunable dynamic sensing *** electrochemical aptasensor is constructed based on the target induced aptamer-folding detection mechanism and the recognition between OTA and its aptamers results in the conformational change of the aptamer probe and thus signal changes for *** dynamic sensing range of the electrochemical aptasensor is successfully tuned by introduction of free assistant aptamer probes in the sensing *** electrochemical aptasensor shows an extraordinary dynamic sensing range of 11-order magnitude of OTA concentration from 10^−8 to 10^2 ng/*** great significance,the signal response in all OTA concentration ranges is at the same current scale,demonstrating that our sensing protocol in this research could be applied for accurate detections of OTA in a broad range without using any complicated treatment of signal ***,OTA spiked red wine and maize samples in different dynamic sensing ranges are determined with the electrochemical aptasensor under optimized sensing *** tuning strategy of dynamic sensing range may offer a promising platform for electrochemical aptasensor optimizations in practical applications.

关键词： Electrochemical aptasensor Tunable dynamic detection range OTA detection Extraordinary dynamic range

Ethanol catalytic deposition of MoS2 on tapered fiber

在线全文

学校读者我要写书评

暂无评论

Photonics Research 2015年第3期3卷 102-107页

作者： Hao Wang Bohua Chen Xiaoyan Zhang Sheng Liu Bangqi Zhu Jun Wang Kan Wu Jianping Chen State Key Laboratory of Advanced Optical Communication Systems and Networks Department of Electronic EngineeringShanghai Jiao Tong UniversityShanghai 200240China Key Laboratory of Materials for High-Power Laser Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China

Deposition of two-dimensional（2D） MoS2 materials on the tapered fiber allows various photonic applications including saturable absorbers and four-wave *** catalytic deposition（ECD） of MoS2 on the optical tapered fiber was proposed and demonstrated in this *** from the conventional optical driven deposition using water or organic solvent,the ECD method utilized the high volatility of the ethanol solvent,which significantly increased the movement speed of the MoS2 nanosheets and thus boosted the deposition rate and reduced the minimum power threshold to drive the *** believe the ECD method should be able to be applied to other similar 2D materials such as other types of transition metal chalcogenides.

关键词： Mo than rate Ethanol catalytic deposition of MoS2 on tapered fiber EDFA

The Comparative Analysis on Country Park Management between Hong Kong and Beijing

在线全文

学校读者我要写书评

暂无评论

Journal of Resources and Ecology 2019年第4期10卷 451-459页

作者： ZHANG Shuying LIU Jiaming LONG Fei Key Laboratory of Regional Sustainable Development Modeling Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China College of Resources and Environment University of Chinese Academy of Sciences Beijing 100049 China

With a comparatively mature state of country park development for China, Hong Kong serves as a model that is emulated by many cities in China's Mainland. In contrast, Beijing started to establish country parks relatively late, but along with the nascent 'Country Park Loop', achieving scientific and reasonable operation management is now the major challenge facing Beijing. By comparing the differences between Hong Kong and Beijing country park management in terms of positioning, management organization, legal guarantees, supporting facilities and education, this paper explores the factors of social development stage, urban developmental history and planning, the wilderness concept and financial support which are responsible for those differences. In order to achieve sustainable development, this paper shows that Beijing country parks should seek corresponding solutions according to their own characteristics.

关键词： country parks management Hong Kong Beijing

Tunable nonlinear refractive index of two-dimensional MoS2, WS2, and MoSe2 nanosheet dispersions [Invited]

在线全文

学校读者我要写书评

暂无评论

Photonics Research 2015年第2期3卷 51-55页

作者： Gaozhong Wang Saifeng Zhang Xiaoyan Zhang Long Zhang Ya Cheng Daniel Fox Hongzhou Zhang Jonathan N.Coleman Werner J.Blau Jun Wang Key Laboratory of Materials for High-Power Laser Shanghai Institute of Optics and Fine MechanicsChinese Academy of Sciences School of Physics and the Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN) Trinity College Dublin State Key Laboratory of High Field Laser Physics Shanghai Institute of Optics and Fine MechanicsChinese Academy of Sciences

Liquid-phase-exfoliation technology was utilized to prepare layered MoS2, WS2, and MoSe2 nanosheets in cyclohexylpyrrolidone. The nonlinear optical response of these nanosheets in dispersions was investigated by observing spatial self-phase modulation（SSPM） using a 488 nm continuous wave laser beam. The diffraction ring patterns of SSPM were found to be distorted along the vertical direction right after the laser traversing the nanosheet dispersions. The nonlinear refractive index of the three transition metal dichalcogenides dispersions n2 was measured to be 10-7cm2W-1, and the third-order nonlinear susceptibility χ（3）10-9 esu. The relative change of effective nonlinear refractive index Δn2e∕n（2e） of the MoS2, WS2, and MoSe2 dispersions can be modulated 0.012–0.240, 0.029–0.154, and 0.091–0.304, respectively, by changing the incident intensities. Our experimental results imply novel potential application of two-dimensional transition metal dichalcogenides in nonlinear phase modulation devices.

关键词： Mo show exp Tunable nonlinear refractive index of two-dimensional MoS2 WS2

The Evaluation System and Application of the Homestay Agglomeration Location Selection

在线全文

学校读者我要写书评

暂无评论

Journal of Resources and Ecology 2019年第3期10卷 324-334页

作者： LONG Fei LIU Jiaming YU Hu ZHU He ZHANG Shuying Key Laboratory of Regional Sustainable Development Modeling Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China College of Resources and Environment University of Chinese Academy of Sciences Beijing 100049 China

The location of the homestay agglomeration is closely related to its proximity to the resources environment and the humanities and social environments. From the macroscopic and microscopic aspects, this study uses the analytic hierarchy process and the expert consultation method to construct a relatively comprehensive evaluation system including economic and environmental factors, tourism development factors, geographical environment factors, supporting facilities and operating conditions. The evaluation index system consists of 20 evaluation indexes and 35 evaluation factors. Taking the Baileqiao in Hangzhou and Qianjiadian Town in Beijing as examples, the evaluation indexes are verified and applied. The results show that the main factors affecting the location of the homestay agglomeration are the economic and environmental factors. The evaluation index system is composed of a target layer, a comprehensive evaluation layer, a factor evaluation layer and an index layer. The target layer takes reas on able locati on of the homestay agglomerati on as the overall objective;the comprehe nsive evaluati on layer includes economic and environ mental factors (0.4396), tourism development (0.3039), geographic and enviro mental factors (0.1405), and supporting facilities (0.0545). The comprehensive evaluation scores of Baileqiao and Qianjiadia n homestay agglomerations are 92.644 and 88.734, respectively, indicati ng that both are reas on able homestay sites. This study is helpful for promoting the understanding of the homestay agglomeration location selection and the development and construction of homestay agglomeration sites.

关键词： homestay agglomeration location selection evaluation system application

Three-dimensional printing of high-mass loading electrodes for energy storage applications

在线全文

学校读者我要写书评

暂无评论

InfoMat 2021年第6期3卷 631-647页

作者： Hao Yang Zhaoxuan Feng Xiaoling Teng Lu Guan Han Hu Mingbo Wu State Key Lab of Heavy Oil Processing Institute of New EnergyCollege of Chemical EngineeringChina University of Petroleum(East China)QingdaoChina

Nanostructured materials afford a promising potential for many energy storage applications because of their extraordinary electrochemical ***,the remarkable electrochemical energy storage performance could only be harvested at a relatively low mass-loading via the traditional electrode fabrication process,and the scale of these materials into commercial-level mass-loading remains a daunting challenge because the ion diffusion kinetics deteriorates rapidly along with the increased thickness of the *** recently,three-dimensional(3D)printing,a promising additive manufacturing technology,has been considered as an emerging method to address the aforementioned issues where the 3D printed electrodes could possess elaborately regulated architectures and rationally organized *** a result,the outstanding electrochemical performance has been widely observed in energy storage devices made of 3D printed electrodes of high-mass *** this review,we systemically introduce the basic working principles of various 3D printing technologies and their practical applications to manufacture highmass loading electrodes for energy storage *** and perspectives in 3D printing technologies for the construction of electrodes at the current stage are also outlined,aiming to offer some useful opinions for further development for this prosperous field.

关键词： 3D printing electrode structures energy storage devices high-mass loading thick electrodes

Applications of nanogenerators for biomedical engineering and healthcare systems

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

InfoMat 2022年第2期4卷 53-109页

作者： Wanli Wang Jinbo Pang Jie Su Fujiang Li Qiang Li Xiaoxiong Wang Jingang Wang Bergoi Ibarlucea Xiaoyan Liu Yufen Li Weijia Zhou Kai Wang Qingfang Han Lei Liu Ruohan Zang Mark HRümmeli Yang Li Hong Liu Han Hu Gianaurelio Cuniberti College of Electrical Engineering Qingdao UniversityQingdaoChina Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of Shandong Institute for Advanced Interdisciplinary Research(iAIR)University of JinanJinanChina College of Electronic Information Qingdao UniversityQingdaoChina Department of Pediatric Surgery The Affiliated Hospital of Qingdao UniversityQingdaoChina College of Physics Qingdao UniversityQingdaoChina Institute for Materials Science and Max Bergmann Center of Biomaterials Technische Universität DresdenDresdenGermany Center for Advancing Electronics Dresden Technische Universität DresdenDresdenGermany College of Biological Science and Technology University of JinanJinanChina School of Chemistry and Chemical Engineering University of JinanShandongJinanChina College of Energy Soochow Institute for Energy and Materials InnovationsSoochow UniversitySuzhouChina Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province Soochow UniversitySuzhouChina Centre of Polymer and Carbon Materials Polish Academy of SciencesZabrzePoland Institute for Complex Materials IFW DresdenDresdenGermany Institute of Environmental Technology VŠB-Technical University of OstravaOstravaCzech Republic School of Information Science and Engineering University of JinanJinanChina Shandong Provincial Key Laboratory of Network Based Intelligent Computing University of JinanJinanChina State Key Laboratory of Crystal Materials Center of Bio&Micro/Nano Functional MaterialsShandong UniversityJinanChina College of Chemical Engineering China University of Petroleum(East China)QingdaoChina Dresden Center for Computational Materials Science Technische Universität DresdenDresdenGermany The Dresden Center for Intelligent Materials(DCIM) Technische Universität DresdenDresdenGermany

The dream of human beings for long living has stimulated the rapid development of biomedical and healthcare ***,conventional biomedical and healthcare devices have shortcomings such as short service life,large equipment size,and high potential safety ***,the power supply for conventional implantable device remains predominantly *** emerging nanogenerators,which harvest micro/nanomechanical energy and thermal energy from human beings and convert into electrical energy,provide an ideal solution for self-powering of biomedical *** combination of nanogenerators and biomedicine has been accelerating the development of self-powered biomedical *** article first introduces the operating principle of nanogenerators and then reviews the progress of nanogenerators in biomedical applications,including power supply,smart sensing,and effective ***,the microbial disinfection and biodegradation performances of nanogenerators have been ***,the protection devices have been discussed such as face mask with air filtering function together with real-time monitoring of human health from the respiration and heat ***,the nanogenerator devices have been categorized by the types of mechanical energy from human beings,such as the body movement,tissue and organ activities,energy from chemical reactions,and gravitational potential ***,the challenges and future opportunities in the applications of nanogenerators are delivered in the conclusive remarks.

关键词： biomedical engineering healthcare implantable devices nanogenerators self-powered devices sensors