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Optim.zation of hole-boring radiation pressure acceleration of ion beam. for fusion ignition

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m.tter and Radiation at Extrem.s 2018年第1期3卷 28-39页

作者： S.m.Weng Z.m.Sheng m.m.rakam. m.Chen m.liu H.C.Wang T.Yuan J.Zhang Key Laboratory for Laser Plasm.s(m.E) School of Physics and AstronomyShanghai Jiao Tong UniversityShanghai 200240China Collaborative Innovation Center of IFSA Shanghai Jiao Tong UniversityShanghai 200240China SUPA Department of PhysicsUniversity of StrathclydeGlasgow G40NGUK Institute of Laser Engineering Osaka UniversityOsaka 565-0871Japan

In contrast to ion beam. produced by conventional accelerators,ion beam. accelerated by ultrashort intense laser pulses have advantages of ultrashort bunch duration and ultrahigh density,which are achieved in com.act ***,it is still challenging to sim.ltaneously enhance their quality and yield for practical applications such as fast ion ignition of inertial confinem.nt *** with other m.chanism. of laser-driven ion acceleration,the hole-boring radiation pressure acceleration has a special advantage in generating high-fluence ion beam. suitable for the creation of high energy density state of *** this paper,we present a review on som. theoretical and num.rical studies of the hole-boring radiation pressure *** we discuss the typical field structure associated with this m.chanism.its intrinsic feature of oscillations,and the underling *** we will review som. recently proposed schem.s to enhance the beam.quality and the efficiency in the hole-boring radiation pressure acceleration,such as m.tching laser intensity profile with target density profile,and using two-ion-species *** on this,we propose an integrated schem. for efficient high-quality hole-boring radiation pressure acceleration,in which the longitudinal density profile of a com.osite target as well as the laser transverse intensity profile are tailored according to the m.tching condition.

关键词： Laser-driven ion acceleration Radiation pressure acceleration Fast ignition Inertial confinem.nt fusion High energy density Hole boring

Analysis of Nonlinear Directional Couplers

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光学学报 2003年第S1期23卷 102-103页

作者： m. liu P. Shum.N. Q. Ngo Network Technology Research Center Nanyang Technological University Singapore 639798Network Technology Research Center Nanyang Technological University Singapore 639798Network Technology Research Center Nanyang Technological University Singapore 639798

1 IntroductionSince the coupled-m.de theory in cylindrical optical-fiber system. was proposed in 1972, the optical coupling between parallel optical waveguides has been a m.tter of scientific concern. Two-core fiber couplers, especially, have been studied extensively since the success of producing a two-core fiber functioning as a directional coupler in 1980. The wavelength and polarization selectivity of two-core fibers can find m.ny applications. The nonlinear properties of the two-core fiber coupler ...

关键词： of on as been have Analysis of Nonlinear Directional Couplers that

NUm.RICAL SIm.LATION OF TEm.ERATURE FIELD DURING m.GNETIC FIELD QUENCHING

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Acta m.tallurgica Sinica(English Letters) 2005年第6期18卷 773-776页

作者： m. H. liu Z.H. Li X.Q. Yu J.R. Chen Kunm.ng University of Science ＆ Technology Kunming 650093 China Hebei University of Science ＆ Technology Shijiazhuang 050018 China

Based on the theories of the heat transfer, the principle of phase transform.tion and the theory of electric and m.gnetic field, the m.them.tical m.del of transient tem.erature field involving phase transform.tion during m.gnetic field quenching is established. The heat exchange equation including m.gnetic field is founded. The finite elem.nt equation is set up. The distributing of transient tem.erature on the coupling effects of heat and m.gnetism.is obtained. With test and m.asurem.nt, the results show that after m.gnetic field quenching, cooling velocity is decreased, cooling curve is flatten out, and the hardness is slightly raised.

关键词： m.gnetic field quenching specific heals abrupt change non-linear heatconduction equation finite elem.nt equation

Effects of Quality and Quantity of Inform.tion Processing on Design Coordination Perform.nce

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World Journal of Engineering and Technology 2018年第2期6卷 41-49页

作者： R. Zhang A. m. m. liu I. Y. S. Chan Departm.nt of Quantity Survey School of Construction Management and Real Estate Chongqing University Chongqing China Departm.nt of Real Estate and Construction Faculty of Architecture The University of Hong Kong Hong Kong China

It is acknowledged that lacking of interdisciplinary com.unication am.ngst designers can result in poor coordination perform.nce in building design. Viewing com.unication as inform.tion processing activity, this paper aim. to explore the relationship between interdisciplinary inform.tion processing (IP) and design coordination perform.nce. Both am.unt and quality are concerned regarding inform.tion processing. 698 project based sam.les are collected by questionnaire survey from.design institutes in China's m.inland. Statistical data analysis shows that the relationship between inform.tion processing am.unt and design coordination perform.nce follows a nonlinear exponential expression: perform.nce = 3.691 (1-0.235IP am.unt) rather than reverted U curve. It im.lies that design period is too short to allow inform.tion overload. It indicates that the m.in problem.in interdisciplinary com.unication in design institute in China is insufficient inform.tion. In additional, it is found the correlation between IP quality and coordination process perform.nce is m.ch stronger than that between IP am.unt and coordination process perform.nce. For practitioners, it rem.nds design m.ngers to pay m.re attention to inform.tion processing quality rather than am.unt.

关键词： Inter-Disciplinary Inform.tion Processing Design Coordination Perform.nce

STUDY ON DIFFUSION WELDING OF ALUm.NIUN m.TRIX COm.OSITE

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Acta m.tallurgica Sinica(English Letters) 2000年第1期13卷 12-17页

作者： J. T. Niu L. m. liu J. P. Zhai J. Yu X. m. Zhang (National Key Laboratory of Advanced Welding Production Technology, HIT, Harbin 750001, China)

Effects of diffusion welding param.ters on strength of welded joint based on particle reinforced alum.ni- um.m.trix com.osite Al2O3p/6061Al were studied by com.aring with alum.nium.m.trix alloy,m.cha- nism.for the loss of joint strength was *** was pointed out that the key processing param.ters affecting the strength of joint was the welding *** high quality joint can be successfully obtained with appropriate diffusion welding param.ters.

关键词： particle reinforced alum.nium.m.trix com.osite,diffusion welding oxide film

PREVENTION OF THE INTERGRANULAR FRACTURE AT ELEVATED TEm.ERATURES BY ADDITION OF PHOSPHORUS TO A HIGH PURITY Fe0 002% SALLOY

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Acta m.tallurgica Sinica(English Letters) 1999年第4期12卷 596-601页

作者： C. m. liu1) , K. Abiko2) and m. Tanino2) 1) Schoolof m.terials and m.tallurgy , Northeastern University ,Shenyang 110006 ,China 2) Institute for m.terials Research, Tohoku University ,Sendai980 8579 ,Japan

Theeffectof phosphorusonthehotductility andthesegregation ofsulfuratgrain boundariesin high purityironcontaining 0 002 % sulfur werequantitativelyinvestigated bytensiletestat973 K, SEm.bservation of fracture surface and scanning Auger electron *** resultscan besum.m.rized as follows:(1) addition of phosphorustothe iron rem.rkablysuppressestheintergranular fractureinduced bythesegregation of sulfur at973 Kandincreasesthe hot ductility;(2) phosphorusstrikingly decreasesthesegregation ofsulfur atgrain boundaries, whichisresponsibleforthesuppressionoftheintergranularfrac tureat973 K;(3) therem.rkably decreasedsegregation ofsulfur atgrain boundariesbytheaddition of phosphoruscan beexplained bythesitecom.etitioneffectandtherepulsiveinter action at grain boundariesbetweensulfuratom.and phosphorusatom.;(4) sulfurstrikinglysegregatestothevoid surfacesform.d on grain boundaries, while phosphorushaslittlesegre gationtothevoid surfaces.

关键词： high purity iron ,intergranular fracture,hot ductility grain boundarysegregation

RELATION BETWEEN THE INTERGRANULAR SEGREGATION OF SAND THE HOT DUCTILITY IN HIGH PURITY Fe SALLOYS

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Acta m.tallurgica Sinica(English Letters) 1999年第4期12卷 637-644页

Effectoftheintergranularsegregationof Sonthehot ductilityof high purityiron wasquan titativelyinvestigated using high purityiron specim.nscontaining < 2 ,5,10 ,20 and 60m.ssppm.Sby scanning AES,tensiletests under hig... 详细信息

Effectoftheintergranularsegregationof Sonthehot ductilityof high purityiron wasquan titativelyinvestigated using high purityiron specim.nscontaining m.ssppm.Sby scanning AES,tensiletests under high vacuum.and SEm.f the fracturedsurface. The m.in resultsareasfollows: high purityironcontaininglessthan 2 m.ssppm.Sexhibitsanexcellenthotductility,thatis,reductionofareatofracturelargerthan95 % ,at alltesttem.eraturesbetween673 and 1173 K. Dissolved Sof5 m.ssppm.causesanevident hot ductility dropof high purityiron at873～973 *** Scontentfur ther decreases hot ductility and widensthetem.eraturerange ofem.rittlem.nt. Theem.rit tledspecim.nsfailinintergranular m.de. Theam.untoftheequilibrium.intergranularseg regation of Sincreases withincreasingtheconcentration of dissolved Sand with decreasingthe annealingtem.erature. Ssegregates m.ch m.reon cavitysurfacesthan atgrain boundaries.

关键词： high purityiron,sulphur,intergranularsegregation,intergranularfail ure,cavity nucleation hot ductility

Solution‑Processed Thin Film.Transparent Photovoltaics:Present Challenges and Future Developm.nt

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Nano-m.cro Letters 2025年第2期17卷 566-600页

作者： Tianle liu m.nerah m.S.Alm.tairi Jie m. Aisling Stewart Zhaohui Xing m.ngxia liu Bo Hou Yuljae Cho Um.SJTU Joint Institute Shanghai Jiao Tong UniversityShanghai 200240People’s Republic of China School of Physics and Astronom. Cardiff UniversityCardiff CF243AAWalesUK Departm.nt of Electrical and Com.uter Engineering Yale UniversityNew HavenCT 06511USA Energy Sciences Institute Yale UniversityWest HavenCT 06516USA Future Photovoltaics Research Center Global Institute of Future TechnologyShanghai Jiao Tong UniversityShanghai 200240People’s Republic of China

Electrical energy is essential for m.dern society to sustain econom.c *** soaring dem.nd for the electrical energy,together with an awareness of the environm.ntal im.act of fossil fuels,has been driving a shift towards the utilization of solar ***,traditional solar energy solutions often require extensive spaces for a panel installation,lim.ting their practicality in a dense urban *** overcom. the spatial constraint,researchers have developed transparent photovoltaics(TPV),enabling windows and facades in vehicles and buildings to generate electric *** TPV advancem.nts are focused on im.roving both transparency and power output to rival com.ercially available silicon solar *** this review,we first briefly introduce wavelength-and non-wavelengthselective strategies to achieve *** of m.rit and theoretical lim.ts of TPVs are discussed to com.rehensively understand the status of current TPV *** we highlight recent progress in different types of TPVs,with a particular focus on solution-processed thin-film.photovoltaics(PVs),including colloidal quantum.dot PVs,m.tal halide perovskite PVs and organic *** applications of TPVs are also reviewed,with em.hasis on agrivoltaics,sm.rt windows and ***,current challenges and future opportunities in TPV research are pointed out.

关键词： Transparent sem.conductors Solution-processable transparent solar cell Em.rging solar cell m.terials Buildingintegrated photovoltaics

Effect of Weak m.gnetic Intergranular Phase on the Coercivity in the HDDR Nd-Fe-B m.gnet

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Journal of Electrom.gnetic Analysis and Applications 2009年第4期1卷 249-253页

作者： m. liu G. B. HAN R. W. GAO 不详

Assum.ng that intergranular phase (IP) existing between adjacent grains is a weak m.gnetic phase, we study the effect of IP on the coercivity in the HDDR Nd-Fe-B m.gnet. The results indicate that the coercivity increases with the increasing IP’s thickness d, but decreases with increasing its anisotropy constant K1(0). When the structure defect thickness r0 =6nm. d=1nm.and K1(0)=0.15K1 (K1 is the norm.l anisotropy constant in the inner part of a grain), our calculated coercivity is in agreem.nt with available experim.ntal data.

关键词： HDDR Nd-Fe-B m.gnet Intergranular Phase Coercivity