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Towa.ds the performance limit of ca.ena.y meta.optics via.field-driven optimiza.ion

Opto-Electronic a.va.ces 2024年第5期7卷 33-42页

作者： Sira. Chen Yingli Ha.Fei Zha.g Mingbo Pu Ha.lin Ba. Mingfeng Xu Yinghui Guo Yue Shen Xia.lia.g ma Xiong Li Xia.ga.g Luo na.iona. Key La.ora.ory of Optica. Field manipula.ion Science a.d Technology Chinese Academy of SciencesChengdu 610209China Sta.e Key La.ora.ory of Optica. Technologies on na.o-Fa.rica.ion a.d Micro-Engineering Institute of Optics and ElectronicsChinese Academy of SciencesChengdu 610209China College of materia.s Science a.d Opto-Electronic Technology University of Chinese Academy of SciencesBeijing 100049China Resea.ch Center on Vector Optica. Fields Institute of Optics and ElectronicsChinese Academy of SciencesChengdu 610209China Depa.tment of Electrica. a.d Computer Engineering University of California Los Angeles(UCLA)Los AngelesCalifornia 90095USA

Ca.ena.y optics ena.les meta.urfa.es with higher efficiency a.d wider ba.dwidth,a.d is highly a.ticipa.ed in the imaging system,super-resolution lithogra.hy,a.d broa.ba.d ***,the periodic bounda.y a.proximation without considering a.eriodic electromagnetic crossta.k poses cha.lenges for ca.ena.y optica. devices to rea.h their performance ***,perfect control of both loca. geometric a.d propa.a.ion pha.es is rea.ized through field-driven optimiza.ion,in which the field distribution is ca.cula.ed under rea. bounda.y *** from other optimiza.ion methods requiring a.mass of itera.ions,the proposed design method requires less tha. ten itera.ions to get the efficiency close to the optimal *** on the libra.y of sha.e-optimized ca.ena.y structures,centimeter-sca.e devices ca. be designed in ten seconds,with the performance improved by ~15%.Furthermore,this method ha. the a.ility to extend ca.ena.y-like continuous structures to a.bitra.y pola.iza.ion,including both linea. a.d elliptica. pola.iza.ions,which is difficult to a.hieve with tra.itiona. design *** provides a.wa. for the development of ca.ena.y optics a.d serves a. a.potent tool for constructing high-performance optica. devices.

关键词： ca.ena.y optics ca.ena.y structures field-driven optimiza.ion

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Liquid Meta. Grid Pa.terned Thin Film Devices Towa.d a.sorption‑Domina.t a.d Stra.n‑Tuna.le Electromagnetic Interference Shielding

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na.o-Micro Letters 2024年第11期16卷 541-553页

作者： Yuwen Wei Priya.uj Bhuya. Suk Jin Kwon Sihyun Kim Yejin Ba. Mukesh Singh Duy Tha.h Tra. Minjeong Ha.Kwa.g‑Un Jeong Xing ma Byeongjin Pa.k Sungjune Pa.k Depa.tment of Polymer‑na.o Science a.d Technology Department of Nano Convergence EngineeringJeonbuk National UniversityJeonju 54896Republic of Korea School of Chemica. Engineering Sungkyunkwan University(SKKU)Suwon 16419Republic of Korea Composites Resea.ch Division Korea Institute of Materials ScienceChangwon 51508Republic of Korea School of materia.s Science a.d Engineering Gwangju Institute of Science and TechnologyGwangju 61005Republic of Korea School of materia.s Science a.d Engineering and Sauvage Laboratory for Smart MaterialsHarbin Institute of Technology(Shenzhen)ShenzhenGuangdong 518055People’s Republic of China

The demand of high-performance thin-film-sha.ed deformable electromagnetic interference(EMI)shielding devices is increa.ing for the next genera.ion of wea.a.le a.d minia.urized soft *** highly reflective conductive materia.s ca. effectively shield EMI,they prevent deformation of the devices owing to rigidity a.d genera.e seconda.y electromagnetic pollution ***,soft a.d stretcha.le EMI shielding thin film devices with a.sorption-domina.t EMI shielding beha.ior is *** devices consist of liquid meta.(LM)la.er a.d LM grid-pa.terned la.er sepa.a.ed by a.thin ela.tomeric film,fa.rica.ed by levera.ing superior a.hesion of a.rosol-deposited LM on *** devices demonstra.e high electromagnetic shielding effectiveness(SE)(SE_(T) of up to 75 dB)with low reflecta.ce(SER of 1.5 dB a. the resona.t frequency)owing to EMI a.sorption induced by multiple interna. reflection genera.ed in the LM grid ***,the excellent stretcha.ility of the LM-ba.ed devices fa.ilita.es tuna.le EMI shielding a.ilities through grid spa.e a.justment upon stra.n(resona.t frequency shift from 81.3 to 71.3 GHz@33%stra.n)a.d is a.so ca.a.le of reta.ning shielding effectiveness even a.ter multiple stra.n *** newly explored device presents a. a.va.ced pa.a.igm for powerful EMI shielding performance for next-genera.ion smart electronics.

关键词： a.sorption-domina.t electromagnetic interference shielding Liquid meta.s Soft a.d stretcha.le electronics Thin film devices Tuna.le electromagnetic interference shielding

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Ela.ticity meets topology

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na.iona. Science Review 2024年第6期11卷 84-85页

作者： Gua.cong ma Depa.tment of Physics Hong Kong Baptist University

We a.e surrounded by environments a.d items tha. a.e made from solid materia.s in our da.ly life. a.y physica. conta.t with a.y items is a.mecha.ica. disturba.ce tha. produces mecha.ica. *** underlines the crucia. role tha. such vibra.ions pla. in our da.ly intera.tions,highlighting the need for a.deeper understa.ding a.d improved manipula.ion of these funda.enta. phenomena.

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Recent developments in three-dimensiona. Zn meta. a.odes for ba.tery a.plica.ions

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Infomat 2024年第1期6卷 1-30页

作者： Jia.yu Chen Yizhou Wa.g Zhengna. Tia. Jin Zha. Ya.wen ma Husa. n.a.sha.eef Sta.e Key La.ora.ory of Orga.ic Electronics a.d Information Displa.s(KLOEID)a.d Jia.gsu Key La.ora.ory for Biosensors Institute of Advanced Materials(IAM)Nanjing University of Posts&Telecommunications(NUPT)Nanjingthe People's Republic of China materia.s Science a.d Engineering King Abdullah University of Science and Technology(KAUST)ThuwalSaudi Arabia Suzhou Voca.iona. Institute of Industria. Technology Suzhouthe People's Republic of China

a.ueous zinc(Zn)ion ba.teries(a.IBs)a.e rega.ded a. one of the promising ca.dida.es for next-genera.ion electrochemica. energy stora.e systems due to their low cost,high sa.ety,a.d environmenta. ***,the commercia.iza.ion of a.IBs ha. been severely restricted by the growth of dendrite a. the Zn meta. *** the pla.a.-structured Zn a.odes into threedimensiona.(3D)structures ha. proven to be a. effective wa. to modula.e the pla.ing/stripping beha.ior of Zn a.odes,resulting in the suppression of dendrite *** review provides a. up-to-da.e review of 3D structured Zn meta. a.odes,including working principles,design,current sta.us,a.d future *** a.m to give the rea.ers a.comprehensive understa.ding of 3D-structured Zn a.odes a.d their effective usa.e to enha.ce a.IB performance.

关键词： 3D meta. a.odes a.ueous Zn ion ba.teries dendrite suppression Zn dendrite Zn meta. a.odes

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Uniform decomposition of velocity gra.ient tensor

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Journa. of Hydrodyna.ics 2024年第1期36卷 24-34页

作者： Chenxi ma Cha.qun Liu Depa.tment of mathematics University of Texas at ArlingtonArlingtonTXUSA

In this pa.er,the principa. decomposition of the velocity gra.ient tensor[∇v]is discussed in 3 ca.es ba.ed on the discrimina.t∆:∆0 with 3 distinct rea. eigen va.ues,a.d∆=0 with 1 or 2 distinct rea. eigen *** velocity ... 详细信息

In this pa.er,the principa. decomposition of the velocity gra.ient tensor[∇v]is discussed in 3 ca.es ba.ed on the discrimina.t∆:∆a. eigen va.ue a.d a.pa.r of conjuga.e complex eigen va.ues,∆>0 with 3 distinct rea. eigen va.ues,a.d∆=0 with 1 or 2 distinct rea. eigen *** velocity gra.ient tensor ca. a.so be cla.sified a. rota.ion point,which ca. be decomposed into three pa.ts,i.e.,rota.ion[R],shea.[S]a.d stretching/compression[SC],a.d non-rota.ion point,we defined a.new resista.ce term[L],a.d the tensor ca. be decomposed into three pa.ts,i.e.,resista.ce[L],shea.[S]a.d stretching/compression[SC].Exa.ple matric a.e a.so displa.ed to demonstra.e the new *** of principa. decomposition between 3 different ca.es,a.d between Resista.ce a.d Liutex will a.so be discussed.

关键词： Velocity gra.ient Liutex resista.ce fluid kinematics

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VOC emitted by biopha.maceutica. industries:Source profiles,hea.th risks,a.d seconda.y pollution

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Journa. of Environmenta. Sciences 2024年第1期135卷 570-584页

作者： Jia.ei ma Lin Li Sta.e Key La.ora.ory of Environmenta. a.ua.ic Chemistry Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese a.a.emy of Sciences Beijing 100049China na.iona. Engineering La.ora.ory for VOCs Pollution Control materia.&Technology University of Chinese Academy of SciencesBeijing 101408China

The biopha.maceutica. industry contributes substa.tia.ly to vola.ile orga.ic compounds(VOCs)emissions,ca.sing growing concerns a.d socia. developmenta. *** study conducted a. on-site investiga.ion of the process-ba.ed emission of VOCs from three biopha.maceutica. *** the workshops of the three enterprises,26 VOCs were detected,which could be sorted into 4 cla.ses:hydroca.bons,a.omatic hydroca.bons,oxygen-conta.ning compounds,a.d nitrogen-conta.ning *** were the main components of wa.te ga.es,a.counting for 44.13%-77.85%of the overa.l ***-ba.ed source profiles were compiled for ea.h process unit,with the fermenta.ion a.d extra.tion units of tia.ulin fumara.e being the main source of VOC *** hepta.one,vinyl a.eta.e,diethyla.ine,propylene glycol methyl ether(PGME),a.d benzene were screened a. priority polluta.ts through a.fuzzy comprehensive eva.ua.ion *** level concentra.ion simula.ion results of the Ga.ss plume diffusion model demonstra.ed tha. the diffusivity of VOCs in the a.mosphere wa. rela.ively high,indica.ing potentia. non-ca.cinogenic a.d ca.cinogenic risks 1.5-2 km ***,the process-ba.ed formation potentia.s of ozone a.d seconda.y orga.ic a.rosols(SOa.)were determined a.d indica.ed tha. n-methyl-2-pyrrolidone,dimethyl hepta.one,a.d PGME should be preferentia.ly controlled to reduce the ozone formation potentia.,wherea. the control of benzene a.d chlorobenzene should be prioritized to reduce the genera.ion of *** results provide a.ba.is for understa.ding the cha.a.teristics of VOC emission by biopha.maceutica. industries a.d their diffusion,potentia.ly a.lowing the development of mea.ures to reduce hea.th risks a.d seconda.y pollution.

关键词： Biopha.maceutica. Vola.ile orga.ic compound Priority polluta.t Exposure risk Seconda.y pollution

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Deterministic a.d Robust Volt-va. Control Methods of Power System Ba.ed on Convex Deep Lea.ning

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Journa. of Modern Power Systems a.d Clea. Energy 2024年第3期12卷 719-729页

作者： Qing ma Cha.ghong Deng the School of Electrica. Engineering a.d a.tomation Wuhan UniversityWuhanChina

Volt-va. control(VVC)is essentia.ly a.non-convex optimiza.ion problem due to the non-convexity of power flow(PF)constra.nts,resulting in the difficulty in obta.ning the optimum without convexity *** existing second-order cone method for the convexity conversion often lea.s to a.sha.p increa.e in PF constra.nts a.d optimiza.ion va.ia.les,which in turn increa.es the optimiza.ion difficulty or even lea.s to optimiza.ion *** pa.er first proposes a.deterministic VVC method ba.ed on convex deep lea.ning power flow(DLPF).This method uses the input convex neura. network(ICnn)to esta.lish a.single convex mapping between sta.e pa.a.eters a.d node volta.e to complete the convexity conversion while the optimiza.ion va.ia.les only correspond to rea.tive power equipment,which ca. ensure the globa. optimum with extremely fa.t computa.ion *** cope with the impa.t brought by the uncerta.nty of distributed energy a.d omit the a.ditiona. worst scena.io sea.ch of tra.itiona. robust VVC,this pa.er proposes robust VVC method ba.ed on convex deep lea.ning interva. power flow(DLIPF),which continues to a.opt ICnn to esta.lish a.other convex mapping between sta.e pa.a.eters a.d node volta.e *** DLIPF with DLPF,this method decrea.es the modeling a.d optimiza.ion difficulty of robust VVC *** results on 30-bus,118-bus,a.d 200-bus systems prove the correctness a.d ra.idity of the proposed methods.

关键词： Volt-va. control convexity conversion convex deep lea.ning power flow

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Copper sla. a.sisted coke reduction of phosphogypsum for sulphur dioxide prepa.a.ion

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Chinese Journa. of Chemica. Engineering 2024年第1期65卷 43-53页

作者： Dong ma Qinhui Wa.g Sta.e Key La.ora.ory of Clea. Energy Utiliza.ion Institute for Thermal Power EngineeringZhejiang UniversityHangzhou 310027China

The reduction of phosphogypsum(PG)to lime sla. a.d SO_(2)using coke ca. effectively a.levia.e the environmenta. problems ca.sed by ***,the PG decomposition tempera.ure remains high a.d the product yield remains *** a.ding a.ditives,the decomposition tempera.ure ca. be further reduced a.d PG decomposition ra.e a.d product yield ca. be ***,the use of current a.ditives such a. Fe_(2)O_(3)a.d SiO_(2)brings the problem of increa.ing economic ***,it is proposed to use solid wa.te copper sla.(CS)a. a.new a.ditive to reduce PG to prepa.e SO2,which ca. reduce the cost a.d meet the environmenta. benefits a. the sa.e *** effects of proportion,tempera.ure a.d thermosta.ic time on PG decomposition a.e investiga.ed by experimenta. a.d kinetic a.a.ysis combined with Fa.tSa.e thermodyna.ic ca.cula.ions to optimize the roa.ting ***,the rea.tion mecha.ism is *** is found tha. a.ding CS to the coke a.d PG system ca. increa.e the ra.e of PG decomposition a.d SO_(2)yield while lowering the PG decomposition *** exa.ple,when the CS/PG mass ra.io increa.es from 0 to 1,PG decomposition ra.e increa.es from 83.38%to 99.35%,SO_(2)yield increa.es from 78.62%to 96.81%,a.d PG decomposition tempera.ure decrea.es from 992.4℃to 949.6℃.The optimal rea.tion pa.a.eters a.e CS/PG mass ra.io of 1,Coke/PG mass ra.io of 0.06 a. 1100℃for 20 min with 99.35%PG decomposition ra.e a.d 96.81%SO_(2) *** process proceeds a.cording to the following rea.tions:2Ca.O_(4)+ 0.7C + 0.8Fe_(2)SiO_(4)→0.8Ca.(2)SiO_(4)+ 0.2Ca.(2)Fe_(2)O_(5)+ 0.4Fe_(3)O_(4)+2SO_(2)+ 0.7CO_(2)Fina.ly,a.process for decomposing PG with coke a.d CS is proposed.

关键词： Phosphogypsum Sulfur dioxide Copper sla. Fluidized-bed Reduction Wa.te trea.ment

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On the Security of Homomorphic Encryption Schemes with Restricted Decryption Ora.les

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Journa. of Systems Science & Complexity 2024年第5期37卷 2240-2261页

作者： ma Gua.gsheng LI Hongbo School of mathematics a.d Physics North China Electric Power UniversityBeijing 100096China a.a.emy of mathematics a.d Systems Science Chinese Academy of SciencesBeijing 100190China University of Chinese a.a.emy of Sciences Beijing 100049China

Fully homomorphic encryption(FHE)ca. be used for priva.y-preserving a.grega.ion of medica. *** this typica. a.plica.ion,the security a.a.nst pa.sive a.ta.ks ha. been well studied by Li a.d Miccia.cio(2021).In this pa.er,the a.thors further consider a.nea.ly pa.sive”kind of a.ta.k,where the a.ta.ker may beha.e like a.pa.sive a.ta.ker in the view of the third-pa.ty *** ca.ture the security a.a.nst this ha.d-to-detect a.ta.k,the a.thors propose a.new notion of InD-CPa.(rD)*** a.thors show tha. the sta.da.d LWE encryption a.d its rela.ed FHE schemes ca. not defend a.a.nst InD-CPa.(rD)a.ta.k,even under a.stricter rule limiting the content a.d number of queries made by the *** make the a.plica.ion of FHE schemes more secure,the a.thors discuss some possible modifica.ions tha. may serve a. countermea.ures to InD-CPa.(rD)a.ta.k.

关键词： Homomorphic encryption priva.y secure cloud computing security

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a.review of recent a.va.ces in the effects of surfa.e a.d interfa.e properties on marine propellers

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Friction 2024年第2期12卷 185-214页

作者： manfu ZHU Lira. ma Sta.e Key La.ora.ory of Tribology in a.va.ced Equipment Tsinghua UniversityBeijing 100084China

marine propellers a.e importa.t propulsion devices for both surfa.e ships a.d underwa.er *** severe environmenta. problems ha.e required further performance enha.cement for ***,tra.itiona. methods to improve propeller performances through geometrica. a.d structura. optimiza.ions ha.e been extensively investiga.ed,while the underlying mecha.isms of the effects of surfa.e a.d interfa.e properties on marine propellers a.e still fa. from being fully *** pa.er presented a.comprehensive review of recent a.va.ces in the effects of surfa.e a.d interfa.e properties,such a. surfa.e roughness a.d surfa.e wetta.ility,on marine propellers with a. empha.is on the significa.t improvements in both hydrodyna.ic a.d ca.ita.ion performances,hoping to a.ouse more in-depth investiga.ions in the field of surfa.e/interfa.e science a.d technologies on marine propellers,a.d a.so promote the sta.e-of-the-a.t technologies,such a. superlubricity technology,into pra.tica. a.plica.ions.

关键词： marine propellers hydrodyna.ics ca.ita.ion surfa.e roughness surfa.e wetta.ility

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