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Co-enhancement of thermal conduction and radiation through morphologies controlling of graphene functional layer for chip thermal management

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Nano research 2024年第10期17卷 8885-8892页

作者： Shuting Cheng Kun Wang Shichen xu yi Cheng Ruojuan liu Kewen huang hao Yuan Wenjuan li Yuyao yang Fushun liang Fan yang Kangyi Zheng zhiwei liang Ce Tu Mengxiong liu Xiaomin yang Jingnan Wang xuzhao Gai Yuejie Zhao Xiaobai Wang Yue Qi Zhongfan liu State key laboratory of Heavy Oil Processing College of ScienceChina University of PetroleumBeijing 102249China Centre for Nanochemistry Beijing Science and Engineering Centre for NanocarbonsBeijing National Laboratory for Molecular SciencesCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China beijing Graphene institute(BGI) Beijing 100095China College of Energy Soochow Institute for Energy and Materials Innovations(SIEMIS)Jiangsu Provincial Key Laboratory for Advanced Carbon Materials and Wearable Energy TechnologiesSoochow UniversitySuzhou 215006China Department of Chemistry College of Chemistry and Materials EngineeringBeijing Technology and Business UniversityBeijing 100048China

With the continuous advancements in electronics towards downsizing and integration,efficient thermal dissipation from chips has emerged as a critical factor affecting their lifespan and operational *** fan-less chip cooling system has two critical interfaces for thermal transport,which are the contact interface between the base and the chip dominated by thermal conduction,and the surface of the fins dominated by thermal *** different thermal transfer modes of these two critical interfaces pose different requirements for thermal management *** the study,a novel approach was proposed by developing graphene thermal transport functional material whose morphology could be intentionally designed via reformed plasmaenhanced chemical vapor deposition(PECVD)methods to meet the diverse requirements of heat transfer ***,graphene with multilevel branching structure of vertical graphene(BVG)was fabricated through the hydrogenassisted PECVD(H_(2)-PECVD)strategy,which contributed a high emissivity of~*** was deposited on the fins’surface and functioned as the radiation enhanced layer to facilitate the rapid radiation of heat from the heat sinks into the surrounding ***,the well-oriented vertical graphene(OVG)was successfully prepared through the vertical electric field-assisted PECVD process(EF-PECVD),which showed a high directional thermal conductivity of~53.5 W·m^(-1)·K^(-1).OVG was deposited on the contact interface and functioned as the thermal conduction enhanced layer,allowing for the quick transmission of heat from the chip to the heat *** this design concept,the two critical interfaces in the chip cooling system can be jointly enhanced,resulting in a remarkable cooling efficiency enhancement of~30.7%,demonstrating that this novel material possessed enormous potential for enhancing the performance of cooling ***,this research not only provided new design concepts for the cooling system

关键词： chip thermal management thermal conduction thermal radiation graphene morphology control

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Crustal P-wave velocity structure of the Longmenshan region and its tectonic implications for the 2008 Wenchuan earthquake

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Science china Earth sciences 2011年第9期54卷 1386-1393页

作者： li ZhaWei xu yi huang runqiu hao tianyao xu ya liu jingsong liu jianhua key laboratory of petroleum resources research Institute of Geology and Geophysics Chinese Academy of Sciences Beijing 100029 China State key laboratory of Geohazard Prevention and Geoenvironment Protection Chengdu University of Technology Chengdu 610059 China

The P-wave velocity structure of the crust in the Longmenshan region has been imaged by seismic travel time tomography us ing local and regional first P-wave arrivals recorded from 2000 to 2008. The tomographic model provides a way to analyze the deep tectonics of the Longmenshan fault belt and the tectonic implications for the 2008 Ms8.0 Wenchuan earthquake. The P-wave velocity images indicate that the initial rupture site and focal depth of the Wenchuan earthquake, together with the di rection of rupture propagation, closely relate to the crustal structure of the Longmenshan region. The Pengguan massif to the west of the Longmenshan fault belt is characterized by high velocity anomalies, suggesting that the crust has a strong strain strength that can accumulate large stresses over a long period. The Ms8.0 Wenchuan earthquake is located at the southwestern end of the Pengguan massif and the western edge of the Sichuan Basin. The collision between the Pengguan massif and the Sichuan Basin becomes the primary reason for the occurrence of the Ms8.0 Wenchuan earthquake. To the north of Wenchuan, the occurrence and propagation of rupture benefit from low velocity anomalies along the Longmenshan fault belt; whereas to the south of Wenchuan, the brittle rupture can occur with more difficulty in relatively weak crust with low velocities. This may be one of the reasons for the absence of aftershocks to the south of Wenchuan, and the rupture induced by the Ms8.0 Wenchuan earthquake propagating from the north to the south along the Longmenshan fault belt. The deep geodynamics of the Ms8.0 Wenchuan earthquake may occur due to the discrepancy of crustal structures on the two sides of the Longmenshan fault belt. Ductile deformation and crustal flow can easily occur in the weak middle-lower crust beneath the Songpan-Garze orogenic belt. The eastward movement of the Tibetan Plateau is obstructed by the rigid lithosphere of the Sichuan Basin, and then the thick ening of the middle-

关键词： Longmenshan orogenic belt Wenchuan earthquake P-wave velocity crustal structure travel time tomography

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Crustal P-wave velocity structure of the Longmenshan region and its tectonic implications for the 2008 Wenchuan earthquake

Crustal P-wave velocity structure of the Longmenshan region ...

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中国科学院地质与地球物理研究所第11届（2011年度）学术年会

作者： li zhiwei~(1*),xu yi~1,huang runqiu~2.hao tianyao~1,xu ya~1,liu jingsong~1 & liu jianhua~1 key laboratory of petroleum resources research,institute of Geology and Geophysics,chinese academy of sciences, beijing 10002.,china State key laboratory of Geohazard Prevention and Geoenvironment Protection,Chengdu University of Technology,Chengdu 610059,china

The P-wave velocity structure of the crust in the Longmenshan region has been imaged by seismic travel time tomography using local and regional first P-wave arrivals recorded from 2000 to *** tomographic model provides a way to analyze the deep tectonics of the Longmenshan fault belt and the tectonic implications for the 2008 M8.0 Wenchuan *** P-wave velocity images indicate that the initial rupture site and focal depth of the Wenchuan earthquake,together with the direction of rupture propagation,closely relate to the crustal structure of the Longmenshan *** Pengguan massif to the west of the Longmenshan fault belt is characterized by high velocity anomalies,suggesting that the crust has a strong strain strength that can accumulate large stresses over a long *** M8.0 Wenchuan earthquake is located at the southwestern end of the Pengguan massif and the western edge of the Sichuan *** collision between the Pengguan massif and the Sichuan Basin becomes the primary reason for the occurrence of the M8.0 Wenchuan *** the north of Wenchuan, the occurrence and propagation of rupture benefit from low velocity anomalies along the Longmenshan fault belt;whereas to the south of Wenchuan,the brittle rupture can occur with more difficulty in relatively weak crust with low *** may be one of the reasons for the absence of aftershocks to the south of Wenchuan,and the rupture induced by the M8.0 Wenchuan earthquake propagating from the north to the south along the Longmenshan fault *** deep geodynamics of the M8.0 Wenchuan earthquake may occur due to the discrepancy of crustal structures on the two sides of the Longmenshan fault belt. Ductile deformation and crustal flow can easily occur in the weak middle-lower crust beneath the Songpan-Garze orogenic belt. The eastward movement of the Tibetan Plateau is obstructed by the rigid lithosphere of the Sichuan Basin,and then the thickening of the middle-lower crust and vertica

关键词： Longmenshan orogenic belt Wenchuan earthquake P-wave velocity Crustal structure travel time tomography

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Vertical graphene-coated Cu wire for enhanced tolerance to high current density in power transmission

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Nano research 2022年第11期15卷 9727-9733页

作者： Kun Wang Shuting Cheng Qingmei Hu Feng Yu yi Cheng Kewen huang hao Yuan Jun Jiang Wenjuan li Junliang li Shichen xu Jianbo yin Yue Qi Zhongfan liu Center for Nanochemistry(CNC) Beijing Science and Engineering Center for NanocarbonsBeijing National Laboratory for Molecular SciencesCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China beijing Graphene institute(BGI) Beijing 100095China State key laboratory of Heavy Oil Processing College of ScienceChina University of PetroleumBeijing 102249China

Cu wires(CuWs)are widely used as electric transmission ***,their limited thermal and chemical stabilities become challenges under the high-power and harsh *** is regarded as an ideal protective barrier for CuW benefiting from its impermeability to all atoms and ***,the excellent hydrophobicity of vertical graphene(VG)will strengthen its protective capability as a corrosion and oxidation ***,VG is directly synthesized on CuW by plasmaenhanced chemical vapor deposition *** hydrophobic VG coating with a high water contact angle can effectively exclude the corrosive liquid and moisture from CuW surface and prevent their further ***,the electrochemical corrosion rate of VG-CuW is reduced by~13,8,and 2 times,compared with bare CuW,VG-CuW with hydrophilic treatment,and CuW coated with thick horizontal graphene layers,*** oxidation occurs on VGCuW after the long-time exposure to humid air at~200℃ along with the largely enhanced tolerance under high-current operating *** study reveals the impressive potentials of hydrophobic VG as a robust corrosion and oxidation barrier for metal wires used in high-power cables and electronic devices in harsh environment.

关键词： vertical graphene Cu wire oxidation and corrosion plasma-enhanced chemical vapor deposition

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Numerical analysis on the influence of vortex motion in a reverse Stairmand cyclone separator by using LES model

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petroleum Science 2022年第2期19卷 848-860页

作者： Zhu-Wei Gao Zhong-Xin liu yao-Dong Wei Cheng-Xin li Shi-hao Wang Xin-Yu Qi Wei huang School of Chemical Engineering and Technology Hainan UniversityHaikou570228PR China State key laboratory of Heavy Oil Processing China University of PetroleumBeijing102249PR China beijing key laboratory of Process Fluid Filtration and Separation Beijing102249PR China State key laboratory of Marine Resource Utilization in South china Sea College of Materials and Chemical EngineeringHainan UniversityHaikou570228PR China

This study aims to analyze the influence of vortex motion in a reverse Stairmand cyclone separator by using LES *** mathematical analysis indicated that the energy dissipation and the flow characteristics of incompressible fluid are directly related to on the vortex *** results of the Q criterion-based iso-vortex surface could well reflect the tendency of the vortex structure,in which the iso-vortex surface exhibited a distorted distribution rather than around the center *** the turning point of velocity vector,vortices were formed and developed,and the point was the center of the local vortex *** addition,the vortex formed an irregular annular region around the wall at the bottom of vortex *** vortex structure near the dust hopper presented a strong ***,there were two rotating flow in the opposite direction within the dust *** phenomena would affect the separation performance,which was significance to cyclone separator.

关键词： Numerical simulation Cyclone separator Mathematical analysis Vortex motion Local analysis

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La_(0.67)Sr_(0.33)MnO_(3)薄膜相图的轨道弹性调控

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Science china Materials 2024年第2期67卷 619-628页

作者：高昂张庆华刘倬卉孟繁琦尚彤彤尼浩黄河意杜剑宇李欣岩于搏涛苏东金奎娟葛琛吉彦舟王博余倩张泽陈龙庆谷林南策文 beijing National Center for Electron Microscopy and laboratory of Advanced Materials School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China beijing National laboratory for Condensed Matter physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China State key of laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China College of Science China University of Petroleum(East China)Qingdao 266580China Materials research institute and Department of Materials Science and Engineering The Pennsylvania State UniversityUniversity ParkPA16802 USA School of Materials Science and Engineering Zhejiang UniversityHangzhou 312227China

过渡金属氧化物具有丰富的功能性,但其错综复杂的内部自由度对相图绘制和结构设计提出了挑战.本文中,我们引入了描述相图物理起源的轨道能级序(ELO),并通过对La_(0.67)Sr_(0.33)MnO_(3)(LSMO)氧化物的研究证明了其在相图预测中的有效性... 详细信息

过渡金属氧化物具有丰富的功能性,但其错综复杂的内部自由度对相图绘制和结构设计提出了挑战.本文中,我们引入了描述相图物理起源的轨道能级序(ELO),并通过对La_(0.67)Sr_(0.33)MnO_(3)(LSMO)氧化物的研究证明了其在相图预测中的有效性.结合DFT计算和实验,我们构建了氧含量和应变关联的LSMO相图,结果表明LSMO结构稳定性与ELO密切相关.据此发现了一种由ELO演化而产生的四倍氧有序相.最后,我们提出了描述轨道分裂程度的轨道弹性定律,阐明了ELO演化的起源,助力功能氧化物的设计.这项研究拓宽了材料科学领域的性能调控手段,并为从轨道角度预测相图提供了思路.

关键词： phase diagram orbital energy level orbital elasticity law structural design La_(0.67)Sr_(0.33)MnO_(3)films

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Genomic and transcriptomic analysis unveils population evolution and development of pesticide resistance in fall armyworm Spodoptera frugiperda

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Protein & Cell 2022年第7期13卷 513-531页

作者： Furong Gui Tianming Lan Yue Zhao Wei Guo yang Dong Dongming Fang Huan liu Haimeng li Hongli Wang Ruoshi hao Xiaofang Cheng yahong li Pengcheng yang Sunil Kumar Sahu yaping Chen Le Cheng Shuqi He Ping liu Guangyi Fan haorong Lu Guohai Hu Wei Dong Bin Chen Yuan Jiang Yongwei Zhang Hanhong xu Fei lin Bernard Slippers Alisa Postma Matthew Jackson Birhan Addisie Abate Kassahun Tesfaye Aschalew Lemma Demie Meseret Destaw Bayeleygne Dawit Tesfaye Degefu Feng Chen Paul K.Kuria Zachary M.Kinyua Tong-Xian liu Huanming yang Fangneng huang Xin liu Jun Sheng Le Kang State key laboratory for Conservation and Utilization of Bioresources in Yunnan Yunnan Agricultural UniversityKunming 650201China State key laboratory of Agricultural Genomics BGI-ShenzhenShenzhen 518083China State key laboratory of Integrated Management of Pest Insects and Rodents Institute of ZoologyChinese Academy of SciencesBeijing 100101China beijing institutes of life Science Chinese Academy of SciencesBeijing 100101China MGI BGI-ShenzhenShenzhen 518083China BGI-Qingdao BGI-ShenzhenQingdao 266555China BGI-Yunnan No.389 Haiyuan RoadHigh-tech Development ZoneKunming 650106China china National GeneBank Jinsha RoadDapeng New DistrictShenzhen 518120China Department of Biology University of Copenhagen2100 CopenhagenDenmark Guangdong Provincial key laboratory of Genome Read and Write BGI-ShenzhenShenzhen 518120China Guangdong Provincial Academician Workstation of BGI Synthetic Genomics BGI-ShenzhenShenzhen 518120China Yunnan Plateau Characteristic Agriculture Industry research institute Kunming 650201China College of Plant Health and Medicine Qingdao Agricultural UniversityQingdao 266109China Department of Entomology Louisiana State University Agricultural CenterBaton RougeLA 70803USA CAS Center for Excellence in Biotic Interactions University of Chinese Academy of SciencesBeijing 100101China Yunnan Plant Protection and Quarantine Station Kunming 650034China State key laboratory for Conservation and Utilization of Subtropical Agro-Bioresources South China Agricultural UniversityGuangzhou 510642China BGI-Americas One Broadway14th FloorCambridgeMA 02142USA Departme nt of Biochemistry Gen etics and MicrobiologyForestry and Agricultural Biotech no logy InstituteUn iversity of PretoriaPretoriaSouth Africa Ethiopian Biotechnology institute Addis AbabaEthiopia College of Natural Science Addis Ababa UniversityAddis AbabaEthiopia Melkassa Agricultural research Center Ethiopian Institute of Agricultural ResearchMelkassaAddis AbabaEthiopia Kenya Agricultural and livestock Res

The fall armyworm(FAW),Spodoptera frugiperda,is a destructive pest native to America and has recently become an invasive insect pest in *** of its rapid spread and great risks in china,understanding of FAW genetic background and pesticide resistance is urgent and essential to develop effective management ***,we assembled a chromosome-level genome of a male FAW(SFynMstLFR)and compared re-sequencing results of the populations from America,Africa,and *** identification of 163 individuals collected from America,Africa and china showed that both C and R strains were found in the American pop-ulations,while only C strain was found in the chinese and African ***,population geno-mics analysis showed that populations from Africa and china have close relationship with significantly genetic differentiation from American *** toge-ther,FAWs invaded into china were most likely origi-nated from *** genomics analysis displayed that the cytochrome p450 gene family is extremely expanded to 425 members in FAW,of which 283 genes are specific to *** of chinese populations with twenty-three pesticides showed the variant patterns of transcriptome profiles,and several detoxification genes such as AOX,UGT and GST spe-cially responded to the *** findings will be useful in developing effective strategies for manage-ment of FAW in china and other invaded areas.

关键词： Spodoptera frugiperda chromosome-level genome population differentiation cytochrome p450 pesticides

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线缆式海底地震观测技术——以浯屿岛海底地震观测台为例

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地球物理学报 2019年第11期62卷 4323-4338页

作者：郝天珧郭永刚张艺峰游庆瑜谢志招刘善虎杨杰徐锡强周蓝捷郑韶鹏张妍王肃静黄松李红旮中国科学院地质与地球物理研究所中国科学院油气资源研究重点实验室北京100029 中国科学院地球科学研究院北京100029 海底科学重点实验室自然资源部第二海洋研究所杭州310012 中国科学院大学北京100049 中国科学院声学研究所声场声信息国家重点实验室北京100190 福建省地震局福州350003 中国地震局厦门海洋地震研究所福建厦门361021 中国科学院遥感与数字地球研究所北京100094

地球科学研究的新型观测平台——线缆式海底地震观测台(网),是一种基于海底光电复合缆的光电传输技术,将传统的陆地地震观测台站向海区延伸、弥补海区地震观测台站的不足,实现实时、长期连续观测地球内部过程的新技术,目前已成为海洋科... 详细信息

地球科学研究的新型观测平台——线缆式海底地震观测台(网),是一种基于海底光电复合缆的光电传输技术,将传统的陆地地震观测台站向海区延伸、弥补海区地震观测台站的不足,实现实时、长期连续观测地球内部过程的新技术,目前已成为海洋科学的创新性研究平台,相关的技术方法也有了突飞猛进的进步.2018年,我国研发建设的“福建近海海底地震观测台”,在前人探索研究的基础上,突破了线缆式海底地震观测台(网)关键技术,实现数据实时传输功能,具备进入地震行业网的能力.经过超过三个月的试运行检验,证实了系统的稳定性和可靠性.本文详细介绍了福建浯屿岛海底地震台(网)研发的关键技术与建设流程、关键技术环节相关规范和检测结果.地震采集数据结果表明,浯屿岛海底地震观测台实现了数据实时流服务,并可接入中国地震局JOPENS系统,数据实时传输正常,并自动存储实时波形数据;试运行期间以实际99%以上的高运行率,达到了国家测震台网管理规定的优秀标准.研发结果可为我国今后的海底地震观测台(网)建设提供重要参考指标与经验借鉴.

关键词：线缆式海底地震观测台浯屿岛海床基水下接驳装置实时传输

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辽东湾盆地L油田东营组储层地震反演预测

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高校地质学报 2021年第5期27卷 593-603页

作者：夏同星卢新瑞李宾黄捍东刘传奇严浩王宏宁中海石油(中国)有限公司天津分公司渤海石油研究院天津300452 中国石油大学(北京)地球物理学院北京102249 油气资源与探测国家重点实验室中国石油大学(北京)北京102249

辽东湾盆地南部东营组油气资源丰富,发现了受构造和岩性双重控制的复杂油气藏,但其储层厚度薄、岩性横向变化大、分布复杂且非均匀性强,给油气勘探带来巨大困难。利用高精度的地震反演方法是解决复杂油气藏、预测薄层储层的有效途径。... 详细信息

辽东湾盆地南部东营组油气资源丰富,发现了受构造和岩性双重控制的复杂油气藏,但其储层厚度薄、岩性横向变化大、分布复杂且非均匀性强,给油气勘探带来巨大困难。利用高精度的地震反演方法是解决复杂油气藏、预测薄层储层的有效途径。文章应用地震相控非线性随机反演方法对东营组目的层段进行叠后地震反演薄砂岩储层预测。通过对测井曲线重构和去压实校正,使声波测井曲线满足高精度反演的要求。首先在地震相界面约束下建立低频速度模型,再基于非线性随机算法提高反演结果的分辨率,结合随机模拟理论使得地震反演结果忠实于地震数据体。该储层地震反演能够有效提高地震资料的分辨率,反演结果能够表征地震波形变化及突出地质沉积特征,反演结果与实际钻井资料进行对比发现吻合率高且能够有效识别薄砂岩储层,精细刻画辽东湾盆地东营组储层分布,为下一步油气勘探开发提供了可靠的依据。

关键词：相控随机反演测井曲线重构去压实校正储层刻画东营组辽东湾盆地

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石油焦灰钒镍浸出特性和赋存形态研究

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化学工程 2021年第12期49卷 7-11页

作者：和丽园刘哲语黄戒介李翔宇苗恒洋胡东海孙浩晨王志青房倚天中国科学院山西煤炭化学研究所煤转化国家重点实验室山西太原030001 中国科学院大学北京100049

以一种玻璃工业炉窑副产的高硫石油焦灰为原料,采用单因素实验探究了其赋存形态及浸出条件对钒镍浸出率的影响。结果表明:在浸出温度为95℃,浸出时间为40 min,液固比为9 L/kg,硫酸用量为15 mol/kg的条件下,当水为浸出剂时,浸出液显酸性... 详细信息

以一种玻璃工业炉窑副产的高硫石油焦灰为原料,采用单因素实验探究了其赋存形态及浸出条件对钒镍浸出率的影响。结果表明:在浸出温度为95℃,浸出时间为40 min,液固比为9 L/kg,硫酸用量为15 mol/kg的条件下,当水为浸出剂时,浸出液显酸性,钒和镍的浸出率分别为60.47%和71.67%,高于其他种类石油焦灰,这是由于石油焦灰在燃烧过程中有硫酸生成及钠盐的活化作用。当硫酸为浸出剂时,钒的浸出率提高到94.68%,而镍的浸出率增加较小,为74.70%。石油焦灰中钒主要为水溶态和酸溶态,而镍基本为水溶态和酸不溶态。由XRD、FT-IR、SEM-EDS分析结果可知,石油焦灰中的水不溶态钒主要以多种钒酸盐的形式存在,而酸不溶态镍为钒酸镍。

关键词：石油焦灰浸出特性赋存形态钒镍

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