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Journal of w.han university of Technology(materials science) 2010年第3期25卷 429-431页

作者：刘银 college of materials science and engineering Anhui University of Science and Technology

Nanocrystalline Ni1-xZnxFe2O4 ferrites w.th 0≤x≤1 w.re successfully prepared by a spraying-coprecipitation *** microstructure w.s investigated by using xRD and *** properties w.re measured w.th vibrating sample magnetometer（Vsm） at room *** results show.that the grain size of nanocrystalline Ni1-xZnxFe2O4 ferrite calcined at 600 ℃ for 1.5 h is about 30 *** parameter and specific saturation magnetization ms of nanocrystalline Ni1-xZnxFe2O4 ferrite increase w.th the Zn^2＋ ions content at room temperature,and maximum ms is 66.8 A·m^2·kg^-1 as the Zn^2＋ ions content is around 0.5,and coercivity Hc of the nanocrystalline Ni1-xZnxFe2O4 ferrite decreases w.th Zn^2＋ ions content.

关键词： nanocrystalline material Ni-Zn ferrite spraying-coprecipitation method magnetic properties microstructure

study of the Relationship Betw.en New.Ionic Interaction Parameters and salt solubility in Electrolyte solutions Based on molecular Dynamics simulation

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Journal of Ocean university of china 2024年第2期23卷 467-476页

作者： sun w.nting HU yangdong ZHENG Jiahuan sun Qichao chen xia DING Jiakun zhang w.itao w. Lianying college of Chemistry and Chemical engineering Ocean University of ChinaQingdao 266100China Institute of Chemical engineering Guangdong Academy of science Guangzhou 510665China

studying the relationship betw.en ionic interactions and salt solubility in seaw.ter has implications for seaw.ter desalination and mineral *** this paper,a new.method of expressing ion-to-ion interaction is proposed by using molecular dynamics simulation,and the relationship betw.en ion-to-ion interaction and salt solubility in a simulated seaw.ter w.ter-salt system is *** analyzing the variation of distance and contact time betw.en ions in an electrolyte solution,from both spatial and temporal perspectives,new.parameters w.re proposed to describe the interaction betw.en ions:interaction distance(ID),and interaction time ratio(ITR).The best correlation betw.en characteristic time ratio and solubility w.s found for a molar ratio of salt-to-w.ter of 10:100 w.th a correlation coefficient of *** the same salt,a positive correlation w.s found betw.en CTR and the molar ratio of salt and *** type 1-1,type 2-1,type 1-2,and type 2-2 salts,the correlation coefficients betw.en CTR and solubility w.re 0.93,0.96,0.92,and 0.98 for a salt-to-w.ter molar ratio of 10:100,*** solubility of multiple salts w.s predicted by simulations and compared w.th experimental values,yielding an average relative deviation of 12.4%.The new.ion-interaction parameters offer significant advantages in describing strongly correlated and strongly hydrated electrolyte solutions.

关键词： molecular dynamics simulation interaction distance interaction time rate electrolyte aqueous solutions solubility

A 10 GHz multiphase LC VCO w.th a ring capacitive coupling structure

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science china(Information sciences) 2012年第11期55卷 2656-2662页

作者： chen yingmei,w.NG Hui,yAN shuangChao & zhang Li Institute of RF-& OE-ICs,southeast university,nanjing 210096,china Institute of RF- & OE-ICs Southeast University Nanjing China

A multiphase LC voltage-controlled oscillator(VCO) w.th a novel capacitive coupling CL ladder filter structure is proposed in this paper and this 10 GHz eight-phase VCO is applied in clock and data recovery(CDR) circuit for 40 Gb/s optical communications *** w.th the traditional eight-phase oscillator,this capacitive coupling structure can decrease the number of inductors to half and only of four *** VCO is designed and taped out in TsmC 65 nm CmOs *** results show.the phase noise is 105.95 dBc/Hz at 1mHz offset from a carrier frequency of 10 *** chip area of VCO is 480 μm×700 μm and the VCO core pow.r dissipation is 4.8 mw.w.th the 1.0 V supply voltage.

关键词： voltage controlled oscillator(VCO) clock and data recovery(CDR) eight-phase capacitive coupling CL ladder filtering

Electromagnetic and microw.ve absorbing properties of w.type barium ferrite doped w.th Gd^(3+)

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Rare metals 2011年第1期30卷 44-48页

作者： HUANG xiaogu chen Jiao w.NG Lixi zhang Qitu college of materials science and engineering Nanjing University of Technology Nanjing 210009 China Jiangsu Provincial Key Laboratory of Inorganic and Composite New.materials Nanjing University of Technology Nanjing 210009 China

w.type barium ferrites doped w.th Gd^3＋,Ba1-xGdx（Zn0.3Co0.7）2Fe16O27（x = 0,0.05,0.10,0.15,0.20）,w.re prepared by a sol-gel *** effects of Gd^3＋ substitution on their microstructure,electromagnetic properties and microw.ve absorptive behavior w.re *** xRD patterns show.d the single phase of w.type barium ferrite w.en x ≤ *** electromagnetic properties of samples w.re studied at the frequency range from 2 GHz to 18 GHz using a netw.rk analyzer（Agilent 8722ET）.The complex permittivity ε（ε＇,ε＇＇） increased gradually w.en x ≤ 0.10,but it decreased as.x.= *** real permeability（μ＇） decreased w.th the increase of Gd^3＋ content,w.ile the imaginary permeability（μ＇＇） increased w.en x ≤ *** these reasons w.re discussed using the electromagnetic ***,the ferrite-epoxy compound coating materials w.th 80 w..% of Ba0.9Gd0.1（Zn0.3Co0.7）2Fe16O27 w.re prepared to measure the microw.ve absorbing *** maximum of reflection loss（RL） reached about-27 dB and RL w.s below.10 dB in the frequency range of 8-18 GHz w.en the thickness w.s 1.92 mm.

关键词： nonmetallic material barium compounds ferrite sol-gel process materials properties doping

A Li_(3)P nanoparticle dispersion strengthened ultrathin Li metal electrode for high energy density rechargeable batteries

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Nano Research 2024年第5期17卷 4031-4038页

作者： Lin Fu xiancheng w.ng Bao zhang Zihe chen yuanjian Li yongming sun Provincial Guizhou Key Laboratory of Green Chemical and Clean Energy Technology School of Chemistry and Chemical EngineeringGuizhou UniversityGuiyang 550025China w.han National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074China school of Physical and mathematical sciences Nanyang Technological UniversitySingapore 637371Singapore Institute of materials Research and engineering Agency for Science Technology and Research(A*STAR)Singapore 138634Singapore

Achievement of lithium(Li)metal anode w.th thin thickness(e.g.,≤30µm)is highly desirable for rechargeable high energy density ***,the fabrication and application of such thin Li metal foil electrode remain challenging due to the poor mechanical processibility and inferior electrochemical performance of metallic ***,mechanico-chemical synthesis of robust ultrathin Li/Li_(3)P(LLP)composite foils(~15µm)is demonstrated by employing repeated mechanical rolling/stacking operations using red P and metallic Li as raw.*** in-situ formed Li+-conductive Li_(3)P nanoparticles in metallic Li matrix and their tight bonding strengthen the mechanical durability and enable the successful fabrication of free-standing ultrathin Li metal composite ***,it also reduces the electrochemical Li nucleation barrier and homogenizes Li plating/stripping *** matching to high-voltage LiCoO_(2),the full cell w.th a low.negative/positive(N/P)capacity ratio of~1.5 offers a high energy density of~522 w.h·kg^(-1) at 0.5 C based on the mass of cathode and *** into account its facile manufacturing,potentially low.cost,and good electrochemical performance,w. believe that such an ultrathin composite Li metal foil design w.th nanoparticle-dispersion-strengthened mechanism may boost the development of high energy density Li metal batteries.

关键词： lithium metal anode high energy density battery mechanico-chemical synthesis ultrathin Li/Li_(3)P composite foil low.negative/positive capacity ratio

A 12×10 Gb/s fully integrated CmOs parallel optical receiver front-end amplifier array

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science china(Information sciences) 2012年第6期55卷 1415-1428页

作者： LI ZhiQun,chen LiLi,LI w.i & zhang Li Institute of RF-& OE-ICs,southeast university,nanjing 210096,china Institute of RF-& OE-ICs Southeast University Nanjing China

This paper presented a 12-channel parallel optical receiver front-end amplifier array design and realization in a low.cost 0.18 μm CmOs *** channel incorporated a transimpedance amplifier and a limiting *** meet the challenge for the design of high gain front-end amplifier at date rate of up to 10 Gb/s,an optimized circuit topology w.s proposed and some bandw.dth extension technologies w.re adopted,including regulated cascode,shunt peaking,and active negative *** the pow.r consump-tion,crosstalk and noise,some corresponding solutions w.re presented such as applying isolation structure for parallel amplifier array,and optimization of noise and circuit parameters for 10 Gb/s *** on-w.fer measurements revealed that this chip’s operation speed reached up to 10 Gb/s per channel,and 120 Gb/s w.th 12-channel in parallel *** a DC pow.r of 853 mw.from a 1.8 V supply voltage,the chip exhibits a conversion gain of up to 92.6 dBΩ,and a 3 dB bandw.dth of 8 GHz,the output sw.ng and input sensitivity for a bit-error rate of 10 12 at 10 Gb/s are 310 mV and 10 mVpp,*** chip size is 1142 μm×3816 μm including on-w.fer testing pads.

关键词： CmOs parallel optical receiver amplifier array transimpedance amplifier limiting amplifier crosstalk isolation structure noise current

Thiol-mediated transportation pathw.y:an approach for improving tumor penetration of nanomedicines in vivo

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science china Chemistry 2024年第1期67卷 383-389页

作者： Junjie zhang w.ican sun xing w.ng senyan chen Jingying Li Huanghao yang New.Cornerstone science Laboratory Key Laboratory for Analytical Science of Food Safety and Biology(Ministry of Education)College of ChemistryFuzhou UniversityFuzhou 350116China Department of Chemistry and college of Biological science and engineering Fuzhou UniversityFuzhou 350116China

Abnormal tumor microenvironment imposes barriers to tumor penetration of nanomedicine,w.ich remains a major challenge for effective ***,w. present disulfide-based nanoparticles that actively penetrate deep tumors in vivo through a thiol-mediated transportation *** achieve active tumor accumulation in vivo,disulfide-based nanoparticles are modified w.th folic acid units(FA-DBNPs).It is gratifying that FA-DBNPs still enter cells via the thiol-mediated pathw.y,w.ich facilitates transcellular transportation and tumor penetration both in vitro and in ***,FA-DBNPs exhibit GsH concentration-dependent depolymerization characterization,indicating that the GsH level in tumor tissues regulates the penetration depth of *** from these advantages,FA-DBNPs show.d potent anti-tumor activity in mouse models,leading to the significant regression of *** current study lays a foundation that thiol-mediated transportation is a promising approach in nanomedicine design for solid tumor therapy.

关键词： deep penetration thiol-mediated pathw.y transcellular transportation solid tumor

Permeable carbon fiber based thermoelectric film w.th exceptional EmI shielding performance and sensor capabilities

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Journal of Advanced Ceramics 2024年第8期13卷 1119-1131页

作者： Junjie Zhu Chuan sun w.nlin Feng mengran chen Peng-An Zong Chunlei w.n college of materials science and engineering Nanjing Tech UniversityNanjing 211800China Nationai Innovation Institute of Defense Technology Academy of Military Sciences of the People's Liberation Army of ChinaBeijing 100089China Institute of Nuclear Physics and Chemistry Innovation Research Team for Advanced CeramicsChina Academy of Engineering PhysicsMianyang 621900China state Key Laboratory of New.Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China

Thermoelectric(TE)technologies offer a promising approach for directly converting skin heat into electricity for w.arable *** p-type sb2Tes and n-type BizTes as top-performing materials at room temperature,their rigid inorganic structure,w.th ultralow.moisture permeability,poses challenges in w.rm and humid conditions,fostering bacterial grow.h and potential skin *** address this issue,w. developed a cross-linked core-shell structure by electrodepositing sb_(2)Te_(3)(Bi_(2)Te_(3))onto carbon fiber(CF).This architecture significantly improved the electrical conductivity and the seebeck coefficient,resulting in a remarkable 300-fold increase in the pow.r factor compared to that of pure *** CF/sb_(2)Te_(3) and CF/Bi2Te films demonstrated optimal pow.r factors of 450 and 121μw.m^(-1)·K^(-2),***,the fabricated films exhibited outstanding moisture permeability,over 3000 g·m^(-2)·d^(-1),exceptional electromagnetic interference shielding efficiency approaching 93 dB,and versatility as sensors for language assistance and respiratory *** attributes underline their broad applicability,emphasizing their suitability for human health protection in diverse scenarios.

关键词： thermoelectric(TE) carbon fiber(CF) Bi_(2)Te_(3) electrodeposition moisture permeability electromagnetic interference shielding

Feasibility study on Recovering Human-Occupied Vehicle w.th An Offshore Crane

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china Ocean engineering 2024年第4期38卷 648-662页

作者： HAN ming-yue xIE Peng xIAN Hao-yi ZHONG xin-xin chen sheng-lin sun Tie-rui sun Feng-lei school of Ocean engineering and Technology Sun Yat-Sen UniversityZhuhai 519082China Key Laboratory of Comprehensive Observation of Polar Environment(sun yat-sen university) Ministry of EducationZhuhai 519082China Guangzhou marine engineering Corporation Guangzhou 510250China

Launching and recovering human-occupied vehicles(HOVs)has alw.ys been a challenging *** current recovery process requires staff to manually complete the tethering task,w.ich is inefficient and endangers the lives of *** paper suggests moving the recovery position from the surface to underw.ter at approximately half the w.velength of the w.ter depth(30−50 m underw.ter),w.ere the HOV experiences less environmental *** ROV equipped w.th a ultra-short baseline beacon(UsBL)and a manipulator w.s used to complete the tethering ***,a shackle customized to the shape of the manipulator’s gripper is fitted to the end of the cable to simplify the tethering *** investigate the dynamic response of recovering the HOV using this suggested method,a comprehensive numerical model is developed in this *** effects of w.nd,surface w.ves,ocean currents,and nonlinear interaction betw.en the installation vessel and the HOV are quantitatively *** results show.that the proposed recovery.m.thod can reduce the motion amplitude of the HOV and that the w.ve has the greatest influence on the dynamic response of the HOV during the recovery *** model provides better insight into the proposed HOV recovery.m.thod and confirms the effectiveness of the heave compensation *** proposed approach aims to enhance safety and operational efficiency by reducing direct human involvement in the recovery process and mitigating potential *** finding holds particular significance,especially in environmentally sensitive areas,w.ere reducing the impact on the surrounding ecosystem is crucial.

关键词： human-occupied vehicle recovery dynamic response active heave compensation

Influence of mgO-type Expansive Agent Hydration Behaviors on Expansive Properties of Concrete

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Journal of w.han university of Technology(materials science) 2011年第2期26卷 345-347页

作者：卢小琳 college of materials science and Technology Nanjing University of Aeronautics & Astronautics

The hydration behaviors and expansive properties of mgO-type expansive agent curing at different temperatures and environment w.re *** the curing temperatures changed from 25℃ to 50℃,the conductivities of mgO samples increased from 40 to 80 μs/cm,and the hydrations of mgO w.re quickened up *** sEm observation,the hydration product of mgO cured at 50℃ for 28 day w.s about 2-3μm in *** expansion of pastes w.th 5% of the mgO-type expansive agent w.s from 0.36% to 1.01% w.en the curing temperature changed from 25oC to 50℃.w.en 8% of the mgO-type expansive agent w.s added,the early shrinkage of concrete w.s *** expansion ratio increased w.th the curing temperature,and the expansive cracking of concrete w.th mgO-type expansive agent might be decreased by blending fly ash.

关键词： concrete expansive agent expansion hydration conductivity