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Development and evaluation of an online monitoring single-particle optical particle counter with polarization detection

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Journal of Environmental Sciences 2024年第4期138卷 585-596页

作者： Weijie Yao Xiaole Pan Yu Tian Hang Liu Yuting Zhang Shandong Lei Junbo Zhang Yinzhou Zhang LinWu Yele Sun Zifa Wang State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China Center for Excellence in Regional Atmospheric Environment Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China

We developed a single-particle optical particle counter with polarization detection(SOPC)for the real-time measurement of the optical size and depolarization ratio(defined as the ratio of the vertical component to the parallel component of backward scattering)of atmospheric particles,the polarization ratio(DR)value can reflect the irregularity of the particles.The SOPC can detect aerosol particles with size larger than 500 nm and the maximum particle count rate reaches~1.8×10^(5)particles per liter.The SOPC uses a modulated polarization laser to measure the optical size of particles according to forward scattering signal and the DR value of the particles by backward S and P signal components.The sampling rate of the SOPC was 106#/(sec·channel),and all the raw data were processed online.The calibration curve was obtained by polystyrene latex spheres with sizes of 0.5-10μm,and the average relative deviation of measurement was 3.96% for sub 3μm particles.T-matrix method calculations showed that the DR value of backscatter light at 120°could describe the variations in the aspect ratio of particles in the above size range.We performed insitu observations for the evaluation of the SOPC,the mass concentration constructed by the SOPC showed good agreement with the PM_(2.5)measurements in a nearby state-controlled monitoring site.This instrument could provide useful data for source appointment and regulations against air pollution.

关键词： Instrument development Single particle detection Measurement uncertainty optical simulation Mass concentration

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Design for manufacturability of a VDSM standard cell library

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Journal of Semiconductors 2012年第2期33卷 143-148页

作者：周宠陈岚曾健平尹明会赵劼 College of Physics and Microelectronics Science Hunan UniversityChangsha 410082China Institute of Microelectronics Chinese Academy of SciencesBeijing 100029China

This paper presents a method of designing a 65 nm DFM standard cell library.By reducing the amount of the library largely,the process of optical proximity correction（OPC） becomes more efficient and the need for large storage is reduced.This library is more manufacture-friendly as each cell has been optimized according to the DFM rule and optical simulation.The area penalty is minor compared with traditional library,and the timing,as well as power has a good performance.Furthermore,this library has passed the test from the Technology Design Department of Foundry.The result shows this DFM standard cell library has advantages that improve the yield.

关键词： design for manufacturability reduced standard cell library layout optimization optical simulation yield

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Semitransparent Flexible Organic Solar Cells

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Chemical Research in Chinese Universities 2020年第3期36卷 343-350页

作者： WANG Yuhcng CHANG Yilin ZHANG Jianqi LU Guanghao WEI Zhixiang CAS Key Laboratory of Nanosystem and Hierarchical Fabrication CAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijing 100190P.R.China Frontier Institute of Science and Technology Xi'an Jiaotong UniversityXi'an 710054P.R.China University of Chinese Academy of Sciences Beijing 100049P.R.China

The semitransparent flexible organic solar cell takes advantages of flexibility,transparency,color adjust ment property,which is more conducive to integrate on buidings and mobile terminals.Ascribing to the developments of narrow band gap donors and the new non-fullerene acceptors,the power conversion efficiency of semitransparent flexible organic solar cells has been achieved 10% to 12% with average visible transmittance of 17% to 21%.This review summarizes the molecular design of the most representative layer materials,and discusses the characterization of semitransparent parameters paradigms,then we discuss how to optimize the device in combination with optical simulation,and finally list the recent development of semitransparent flexible electrodes of ITO-free organic solar cells,and give our perspectives on the next step direction.

关键词： Semitransparent Flexible Organic solar cell Electrode optical simulation

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Reduction of the optical Loss in the Multi-Cathode Structure Organic Light Emitting Device Using a Long Range Surface Plasmon

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Optics and Photonics Journal 2016年第8期6卷 226-232页

作者： Akiyoshi Mikami Department of Electrical Engineering Kanazawa Institute of Technology Ishikawa Japan

Light extraction efficiency of organic light-emitting devices has improved by using a nano-sized multi-cathode structure consisting of semi-transparent metal and an optical compensation layer. From the detail optical calculation based on the multi-scale analysis including near-field optics, it was found that surface plasmon loss in the metal cathode is suppressed to less than 10% due to long range and short range surface plasmon coupling between both sides of metal cathode. Not less than 90% of optical power in the dipole emission can be successfully utilized as propagation light. Light extraction efficiency in a phosphorescent device has improved about twice by using the multi-cathode structure.

关键词： Light-Emitting Device Organic Material Surface Plasmon optical simulation

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Near infrared spectrum simulation applied to human skin for diagnosis

Near infrared spectrum simulation applied to human skin for ...

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2007亚洲光电子会议保健与生物医学光学分会场

作者： Chen-Mu Tsai Yi-Chin Fang Chih-Yu Wang Pin-Chun Chiu Shih-Hao Chemg Department of Computer and Communication Kun Shan University Taiwan R.O.C. Graduate Institute of Electro-optical Engineering National Kaohsiung First University of Science and TechnologyTaiwan R.O.C. Department of Biomedical Engineering I-Shou UniversityTaiwan R.O.C.

This research proposes a new method for skin diagnose using near infrared as the light source (750nm300nm). Compared to UV and visible light, near infrared might penetrate relatively deep into biological soft tissue in some cases although NIR absorption property of tissue is not a constant for water, fat, and collagen etc. In the research, NIR absorption and scattering properties for skin are discussed firstly using the theory of molecule vibration from Quantum physics and Solid State Physics;secondly the practical model for various NIR absorption spectrum to skin tissue are done by optical simulation for human skin. Finally, experiments are done for further identification of proposed model for human skin and its reaction to near infrared. Results show success with identification from both theory and experiments.

关键词： Near Infrared Human Skin optical simulation optical Scattering

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