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Numerical Analysis of Efficiency Enhancement in Plasmonic Thin-Film Solar Cells by Using the SILVACO TCAD Simulator

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Chinese Physics Letters 2012年第6期29卷 246-248页

作者： KIM un-Chol JIANG Xiao-Qing Department of Materials Science Kim Il Song UniversityPyongyangD.P.R.Korea Department of Information Science&Electronic Engineering Zhejiang UniversityHangzhou 310027

A physical model for simulating plasmonic solar cells (SCs) using the SILVACO TCAD simulator is establisled and the effects of some factors on the efficiency enhancement of the amorphous silicon thin film SCs are *** this simulation,it is demonstrated that our method can successfully simulate the optical and electrical properties of plasmonic solar cells without the overestimation of the characteristics and without the neglect of parameter change in the device operation *** is shown that not only the size and kind of metal nanoparticles but also other factors,such as the surrounding medium,the distance from the bottom of particles to the device surface,and the light incident angle,play important roles in the optical and electrical properties of plasmonic SCs.

关键词： SILVACO Efficiency Solar

Between Darwin and Hegel： On Dewey＇s Concept of Experience

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Frontiers of Philosophy in China 2017年第1期12卷 104-119页

作者： CHEN Yaj un School of Philosophy Fudan University Shanghai 200433 China

＂Experience＂ is so central to Dewey＇s philosophy that one mu^t, first of all, understand what he means by the term. Diverging from the traditional conception of experience, Dewey＇s understanding involves two dimensions, namely, naturalism and historicism; in this, it can be seen as the unification of Darwinism and Hegelianism. Without attending to its dimension of naturalism, one would ignore experience＇s basic character, namely that of receptivity, while without attending to the aspect of historicism, one would ignore experience＇s dimension of meaning, its character of spontaneity. Dewey＇s notion of experience is unique. Its true value can be seen more clearly in comparison with the conceptions of experience advanced by Quine and McDowell.

关键词： experience interaction meaning naturalism historicism

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兒童近視防控效果的臨床比較分析

镜湖医学 2024年第1期24卷 42-44页

作者：袁淑敏賴一凡澳門鏡湖醫院眼科中心中国

目的分别評估低濃度阿托品、光學離焦眼鏡及兩者聯合使用對兒童近視控制的效果。方法選取2019年4月~2022年4月在鏡湖醫院眼科中心就診的近視兒童,共166眼。低濃度阿托品54眼,光學離焦眼鏡56眼,兩者聯合使用56眼,隨訪1年,比較分析等效球... 详细信息

目的分别評估低濃度阿托品、光學離焦眼鏡及兩者聯合使用對兒童近視控制的效果。方法選取2019年4月~2022年4月在鏡湖醫院眼科中心就診的近視兒童,共166眼。低濃度阿托品54眼,光學離焦眼鏡56眼,兩者聯合使用56眼,隨訪1年,比較分析等效球鏡和眼軸。結果治療前,三組性别、年齡、眼軸差異均無統計學意義,等效球鏡度差異有統計學意義(F=7.268,P0.05)。每組近視干預後的眼軸均有增長,低濃度阿托品、光學離焦眼鏡、聯合組分别增加了(0.24±0.19)mm、(0.21±0.29)mm、(0.17±0.16)mm,差異無統計學意義(P>0.05)。結論低濃度阿托品、光學離焦眼鏡、兩者聯合使用三種方法對兒童近視控制效果差異無統計學意義;與其他近視眼流行病調查和臨床研究比較,配戴傳統的近視眼鏡,每年等效球鏡度增加值和眼軸增長值比較,本研究三種方法均有延緩近視加深的效果。

关键词：近視阿托品眼軸多區正向離焦等效球鏡度

Numerical modeling of sedimentation control scenarios in the approach channel of the Nakdong River Estuary Barrage,South Korea

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International Journal of Sediment Research 2016年第3期31卷 257-263页

作者： un Ji Eun-Kyung Jang Gwonhan Kim Hydro Science and Engineering Research Institute Korea Institute of Civil Engineering and Building Technology

The effects of sedimentation reduction at the Nakdong River Estuary Barrage(NREB) in Korea were quantitatively analyzed with respect to different sediment control methods using the calibrated and validated two-dimensional *** countermeasures of sediment dredging,sediment flushing,channel geometry change,and a combination of flushing and channel geometry change were examined for the approach channel of the *** flood event and channel geometries of the 3.8 km section upstream of the NREB surveyed before and after dredging in 2007 were used for modeling *** a result,the half of sediments dredged in 2007 could be eliminated naturally by floods without *** numerical simulation of sediment flushing indicated that the deposition height decreased in the entire simulation section with the minimum and maximum reductions from 0.3 in to1.3 m in deposition *** channel contraction method produced quantitatively the largest amount of sedimentation reduction and sediment flushing and dredging *** reduction by a combination of flushing and channel contraction was up 10%compared to the individual method of channel contraction.

关键词： Channel contraction Nakdong River Estuary Barrage Sediment dredging Sediment flushing Sedimentation reduction

Nitro-tetrazole based high performing explosives:Recent overview of synthesis and energetic properties

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Defence Technology（防务技术） 2021年第6期17卷 1995-2010页

作者： Saira Manzoor Qamar-un-nisa Tariq Xin Yin Jian-Guo Zhang State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing100081China

Heterocyclic skeleton(Azoles)and different energetic groups containing high performing explosives are highly emerged in recent years to meet the challenging requirements of energetic materials in both military and civilian applications with improved *** this purpose tetrazole(Azole)is identified as an attractive heterocyclic backbone with energetic functional groups nitro(-NO_(2)),nitrato(-ONO_(2)),nitrimino(-NNO_(2)),and nitramino(eNHeNO_(2))to replace the traditionally used high performing *** tetrazole based compounds having these energetic functional groups demonstrated advanced energetic performance(detonation velocity and pressure),densities,and heat of formation(HOF)and became a potential replacement of traditional energetic compounds such as *** review presents a summary of the recently reported nitro-tetrazole energetic compounds containing poly-nitro,di/mono-nitro,nitrato/nitramino/nitrimino,bridged/bis/di tetrazole and nitro functional groups,describing their preparation methods,advance energetic properties,and further applications as highperforming explosives,especially those reported in the last *** review aims to provide a fresh concept for designing nitro-tetrazole based high performing explosives together with major challenges and perspectives.

关键词： Tetrazole Energetic materials Functional groups Heterocyclic High-performing explosives

Microstructural evolution of pre-twinned Mg alloy with annealing temperature and underlying boundary migration mechanism

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Journal of Magnesium and Alloys 2023年第8期11卷 2953-2966页

作者： Ye Jin Kim Jong un Lee Gyo Myeong Lee Sung Hyuk Park School of Materials Science and Engineering Kyungpook National UniversityDaegu 41566Republic of Korea

This study investigates the variations in the microstructural characteristics of a pre-twinned Mg alloy with the temperature of the subsequent annealing *** this end,a rolled AZ31 alloy is compressed to 3%plastic strain along the rolling direction(RD)to activate{10-12}twinning and is subsequently annealed at 200,250,300,350,and 400℃.Numerous{10-12}twins are formed throughout the compressed material,leading to the formation of a RD-oriented *** an annealing temperature of 200℃,no microstructural variations occur during *** the annealing temperature increases from 250 to 400℃,the residual strain energy and remaining twin boundaries of the annealed material decrease owing to the promoted static recovery and the increased area fraction of twin-free grown ***,an increase in the annealing temperature results in a gradual microstructural transition from a fully twinned grain structure to a completely twin-free grain *** microstructural evolution during annealing is predominantly governed by the movement of high-angle grain boundaries via a strain-induced boundary migration mechanism,and a few twin boundaries migrate above 350℃because of their lower boundary *** boundary migration behavior and resultant microstructural evolution are discussed in detail based on the variations in boundary mobility and driving force for boundary migration with annealing temperature.

关键词： Rolled Mg alloy {10-12}twin Grain growth Boundary migration Annealing

Microstructural evolution and grain growth mechanism of pre-twinned magnesium alloy during annealing

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Journal of Magnesium and Alloys 2021年第4期9卷 1238-1251页

作者： Ye Jin Kim Jong un Lee Young Min Kim Sung Hyuk Par School of Materials Science and Engineering Kyungpook National JJniversityDaegu 41566Republic of Korea Implementation Research Division Korea Institute of Materials ScienceChanson 51508Republic of Korea

The microstructural evolution and underlying grain growth mechanism of a{1012}-twin-containing Mg alloy during annealing are investigated through quasi in situ electron backscatter diffraction measurements of a rolled AZ31 alloy subjected to precompression along the rolling direction(RD).The precompressed material shows a partially twinned structure consisting of a twinned region and a residual matrix region,and this structure changes to an almost twin-free structure consisting of grown grains with serrated grain boundaries in twinand matrix-originated regions after annealing at 250℃ for 1 *** addition,the average grain size almost doubles and the internal strain energy decreases significantly after *** microstructural variations are induced mainly by grain growth through the strain-induced migration of high-angle grain boundaries without the movement of twin *** twinned region of the precompressed material has higher stored strain energy than the residual matrix region because the crystallographic orientation of the former region is favorable for basal slip and because of the occurrence of the dislocation transmutation reaction in the *** reducing the total strain energy accumulated in the precompressed material,the residual matrix region—having lower stored strain energy—preferentially grows while consuming the twinned regions formed in the surrounding grains during *** a result,the area fraction of grains with a matrix texture increases whereas that of grains with a twin texture decreases after *** twin texture intensity increases significantly and this texture becomes more concentrated along the RD because the highly RD oriented twins tend to grow during annealing on account of their fairly low stored strain energy.

关键词： Magnesium Twin Annealing Grain growth Strain energy

Artificial synaptic and self-rectifying properties of crystalline(Na_(1-x)K_(x))NbO_(3)thin films grown on Sr_(2)Nb_(3)O_(10)nanosheet seed layers

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Journal of Materials Science & Technology 2022年第28期123卷 136-143页

作者： In-Su Kim Jong-un Woo Hyun-Gyu Hwang Bumjoo Kim Sahn Nahm Department of Materials Science and Engineering Korea UniversitySeoul 02841Republic of Korea KU-KIST Graduate School of Converging Science and Technology Korea UniversitySeoul 02841Republic of Korea

Crystalline(Na_(1-x)K_(x))NbO_(3)(NKN)thin films were deposited on Sr_(2)Nb_(3)O_(10)/TiN/Si(S-TS)substrates at 370°***_(2)Nb_(3)O_(10)(SNO)nanosheets served as a template for the formation of crystalline NKN films at low *** the NKN film was deposited on one SNO monolayer,the NKN memristor exhibited normal bipolar switching characteristics,which could be attributed to the formation and destruction of oxygen vacancy ***,the NKN memristor with one SNO monolayer exhibited artificial synaptic ***,the NKN memristor deposited on two SNO monolayers exhibited self-rectifying bipolar switching properties,with the two SNO monolayers acting as tunneling barriers in the *** conduction mechanism of the NKN memristor with two SNO monolayers in the highresistance state is attributed to Schottky emission,direct tunneling,and Fowler–Nordheim(FN)*** current conduction in this memristor in the low-resistance state was governed by direct tunneling and FN ***,the NKN memristor with two SNO monolayers exhibited large ON/OFF and rectification ratios and artificial synaptic ***,an NKN memristor with two SNO monolayers can be used for fabricating artificial synaptic devices with a cross-point array structure.

关键词： Bipolar switching properties Self-rectifying bipolar switching properties Artificial synaptic properties Crystalline NKN thin film Sr_(2)Nb_(3)O_(10)nanosheet seed layer

Radiative capture of proton by ^(9)Be(p,γ)^(10)B at low energy

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Communications in Theoretical Physics 2022年第2期74卷 78-82页

作者： Abdul Kabir Jameel-un Nabi Sumair Sagheer Laiba Rashid Department of Space Science Institute of Space TechnologyIslamabadPakistan university of Wah Quaid AvenueWah Cantt 47040PunjabPakistan Faculty of Engineering Sciences GIK Institute of Engineering Sciences and TechnologyTopi 23640SwabiKhyber PakhtunkhwaPakistan

Radiative capture p+^(9)Be→^(10)B+γ at energies bearing astrophysical importance is a key process for the spectroscopic study of ^(10)*** this work,we consider the radiative capture cross-section for the ^(9)Be(p,γ)^(10)B within the framework of the potential model and the R-matrix method for the multi-entrance channel *** certain cases,when the potential fails,therefore,the R-matrix approach is better to use for the description of partial components of the cross-section that have sharp or broad *** all possible electric and magnetic dipole transitions,partial components of the astrophysical S-factor are *** computed value of the total S-factor at zero energy is consistent with the reported results.

关键词： potential model R-matrix approach E1 transitions M1 transitions cross-section astrophysical S-factor