Renewal-Experimental Studies of Elasticity, Rheology, and Phonon Dynamics of Materials at Pressure-Temperature Conditions of Earth's Mantle and Core

地幔和地核压力-温度条件下材料弹性、流变学和声子动力学的更新实验研究

基本信息

  • 批准号:
    0409321
  • 负责人:
  • 金额:
    --
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Continuing Grant
  • 财政年份:
    2004
  • 资助国家:
    美国
  • 起止时间:
    2004-07-15 至 2010-06-30
  • 项目状态:
    已结题

项目摘要

Plate tectonics, one of the most important scientific discoveries in the last century, is the surface manifestation of the dynamic processes of its much deeper roots. Recent tomographic and geodynamic studies provided detailed three-dimensional descriptions of the solid Earth. Interpretations of these results require additional knowledge on the real materials that constitute the deep Earth and whose properties are drastically altered by its extreme P-T conditions. Key properties include: Density, r (or molar volume, V) Crystal unit-cell parameters (a, b, c, a, b, g) Bulk modulus (K), shear modulus (G), and single-crystal elasticity (cij or sij) Compressional (VP) and shear wave velocity (VS) as a function of crystallographic orientation Phonon density of state (DOS) and phonon dispersion Preferred orientation under stress Shear Strength, creep law, and deformation mechanismComprehensive understanding of the static and dynamic Earth depends upon our knowledge of these parameters as functions of pressure and temperature. For a long time, only r and K measurements were possible beyond transition-zone pressures (25 GPa) and most measurements were regarded as reconnaissance in nature. Consequently, Earth models are often tenuous and controversial. Resulted from the previous grant support, a series of breakthroughs in high-pressure technology has finally made it possible to propose a study of all these properties. Using the new technology, the present grant supports a comprehensive and integrated series of experimental studies of the elastic, rheological, and phonon properties of deep mantle and core materials at high pressures and temperatures. The results will be used to resolve major problems associated with the composition, structure, dynamics, and evolution of the Earth's deep interior.
板块构造是上个世纪最重要的科学发现之一,它是其深层根源的动态过程的表面表现。最近的层析成像和地球动力学研究提供了固体地球的详细三维描述。对这些结果的解释需要对构成地球深处的真实物质有更多的了解,这些物质的性质因其极端的P-T条件而发生了巨大的变化。主要属性包括:密度,r(或摩尔体积,V)晶体单元参数(a, b, c, a, b, g)体积模量(K),剪切模量(g),单晶弹性(cij或sij)压缩(VP)和横波速度(VS)作为晶体取向的函数声子态密度(DOS)和声子色散应力下的首选取向剪切强度,蠕变规律对地球静态和动态的全面理解取决于我们对这些参数作为压力和温度的函数的了解。长期以来,在过渡带压力(25gpa)之外,只有r和K测量是可能的,大多数测量在本质上被视为侦察。因此,地球模型往往是脆弱和有争议的。由于之前的拨款支持,高压技术的一系列突破最终使提出所有这些性质的研究成为可能。利用这项新技术,目前的拨款支持在高压和高温下对深部地幔和地核材料的弹性、流变和声子特性进行全面和综合的一系列实验研究。这些结果将用于解决与地球深处的组成、结构、动力学和进化有关的重大问题。

项目成果

期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
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Ho-kwang Mao其他文献

From Biomass to Functional Crystalline Diamond Nanothread: Pressure-Induced Polymerization of 2,5-Furandicarboxylic Acid
从生物质到功能性结晶金刚石纳米线:2,5-呋喃二甲酸的压力诱导聚合
  • DOI:
    10.1021/jacs.2c08914
  • 发表时间:
    2022
  • 期刊:
  • 影响因子:
    15
  • 作者:
    Xuan Wang;Xin Yang;Yida Wang;Xingyu Tang;Haiyan Zheng;Peijie Zhang;Dexiang Gao;Guangwei Che;Zijia Wang;Aijiao Guan;Jun-Feng Xiang;Mingxue Tang;Xiao Dong;Kuo Li;Ho-kwang Mao
  • 通讯作者:
    Ho-kwang Mao
Retention of high-pressure solution-processable metastable phase to ambience via differential sublattice rigidity for broadband photodetectors
通过差分亚晶格刚性将高压可溶液加工亚稳相保留至环境中用于宽带光电探测器
  • DOI:
    10.1038/s41467-025-57523-0
  • 发表时间:
    2025-03-06
  • 期刊:
  • 影响因子:
    15.700
  • 作者:
    Zhongyang Li;Jue Gong;Zhikai Zhu;Donghao Liu;Qingyang Hu;Yiming Wang;Xuqiang Liu;Shuo Zhou;Hui Luo;Dong Wang;Xingyi Liu;Zengxi Yang;Min Tang;Qingyu Kong;N-Diaye Adama;Kai Zhang;Shuai Yan;Lili Zhang;Xiaohui Zeng;Zhenhai Yu;Wei Xia;Jian Yuan;Mingtao Li;Nana Li;Hongliang Dong;Ziyou Zhang;Haiyun Shu;Yang Ding;Dongbo Wang;Yanfeng Guo;Tao Xu;Lingping Kong;Wenge Yang;Ho-kwang Mao;Gang Liu
  • 通讯作者:
    Gang Liu
LiBH_4の圧力誘起構造変化
LiBH_4 压力引起的结构变化
  • DOI:
  • 发表时间:
    2006
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Mnhtar Ahart;Jeffery L. Yarger;Kristina M. Lantzky;Satoshi Nakano;Ho-kwang Mao;Russell J. Hemley;M.Ahart;中野智志
  • 通讯作者:
    中野智志
RGB photoluminescence from single-component hydrocarbon single-crystals: Revealing excited-state dynamics in organic semiconductors
  • DOI:
    10.1016/j.carbon.2024.119873
  • 发表时间:
    2025-02-01
  • 期刊:
  • 影响因子:
  • 作者:
    Takeshi Nakagawa;Shaohua Fu;Kejun Bu;Dong Wang;Martina Vrankić;Philip Dalladay-Simpson;Xia Yin;Jianbo Zhang;Yonggang Wang;Xujie Lü;Jimin Zhao;Ho-kwang Mao;Yang Ding
  • 通讯作者:
    Yang Ding
Preserving high-pressure solids via freestanding thin-film engineering
通过独立式薄膜工程技术来保存高压固体
  • DOI:
    10.1038/s41467-025-61260-9
  • 发表时间:
    2025-07-01
  • 期刊:
  • 影响因子:
    15.700
  • 作者:
    Tao Liang;Zhidan Zeng;Ziyin Yang;Fujun Lan;Hongbo Lou;Chendi Yang;Di Peng;Yuxin Liu;Tao Luo;Zhenfang Xing;Qing Wang;Haibo Ke;Yong Yang;Renchao Che;Hongwei Sheng;Ho-kwang Mao;Qiaoshi Zeng
  • 通讯作者:
    Qiaoshi Zeng

Ho-kwang Mao的其他文献

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{{ truncateString('Ho-kwang Mao', 18)}}的其他基金

Renewal: Petrology and Geochemistry of the Deep Lower Mantle
更新:下地幔深处的岩石学和地球化学
  • 批准号:
    1447438
  • 财政年份:
    2015
  • 资助金额:
    --
  • 项目类别:
    Continuing Grant
Mineral Physics Studies of Elasticity, Phonon, and Rheology at Pressure-Temperature Conditions of the Earth's Deep Interior
地球深处压力-温度条件下的弹性、声子和流变学的矿物物理研究
  • 批准号:
    1345112
  • 财政年份:
    2014
  • 资助金额:
    --
  • 项目类别:
    Continuing Grant
Renewal: Chemistry of the Earth's Deep Interior
更新:地球深处的化学
  • 批准号:
    1119504
  • 财政年份:
    2011
  • 资助金额:
    --
  • 项目类别:
    Continuing Grant
MRI Consortium: Development of a Monochromator System for Enabling New Imaging and Submicron Probes for High Pressure Research
MRI 联盟:开发单色仪系统,为高压研究提供新的成像和亚微米探头
  • 批准号:
    1126249
  • 财政年份:
    2011
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
Renewal-Experimental Studies of Elasticity, Rheology, Volume, and Texture of Materials at Pressure-Temperature Conditions of the Earth's Mantle and Core
地幔和地核压力-温度条件下材料的弹性、流变性、体积和织构的更新实验研究
  • 批准号:
    0911492
  • 财政年份:
    2009
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
MRI: Acquisition of Portable Extreme Temperature-Pressure System
MRI:获取便携式极端温度压力系统
  • 批准号:
    0821584
  • 财政年份:
    2008
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
Renewal: Chemistry of the Earth's Deep Interior
更新:地球深处的化学
  • 批准号:
    0810255
  • 财政年份:
    2008
  • 资助金额:
    --
  • 项目类别:
    Continuing Grant
Development of New Diamond Cell Technology for Ultrahigh-Pressure Single-Crystal Structure Analysis Using X-ray Diffraction
开发利用 X 射线衍射进行超高压单晶结构分析的新型金刚石单元技术
  • 批准号:
    0217389
  • 财政年份:
    2002
  • 资助金额:
    --
  • 项目类别:
    Continuing Grant
High Pressure X-Ray Facility at National Synchrotron Light Source
国家同步加速器光源高压 X 射线设备
  • 批准号:
    0004084
  • 财政年份:
    2001
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
Equations of State, Elasticity, and Rheology of Earth Materials at High Pressures and Temperatures
高压和高温下地球材料的状态、弹性和流变方程
  • 批准号:
    0001173
  • 财政年份:
    2000
  • 资助金额:
    --
  • 项目类别:
    Continuing Grant

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颗粒土内部侵蚀的实验与数值研究
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