CHARACTERIZATION OF LIQUID AMORPHOUS CALCIUM CARBONATE PHASES BY IN SITU XAS

通过原位 XAS 表征液态无定形碳酸钙相

• 批准号: 8361276
• 负责人: STEVEN ERIC WOLF
• 金额: $ 0.59万
• 依托单位: ILLINOIS INSTITUTE OF TECHNOLOGY
• 依托单位国家: 美国
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-01-01 至 2011-12-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/8361276
• 关键词: Animals; Biomimetics; Biophysics; Bone Development; Calcium; Calcium Carbonate; Chalk; Crystallization; Funding; Goals; Grant; Implant; In Situ; Life; Liquid substance; Minerals; Monitor; National Center for Research Resources; Phase; Precipitation; Principal Investigator; Process; Research; Research Infrastructure; Resources; Seawater; Solutions; Source; Techniques; Tooth structure; United States National Institutes of Health; Water; bone; calcium bicarbonate; cost; nanosized

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. Primary support for the subproject and the subproject's principal investigator may have been provided by other sources, including other NIH sources. The Total Cost listed for the subproject likely represents the estimated amount of Center infrastructure utilized by the subproject, not direct funding provided by the NCRR grant to the subproject or subproject staff. The formation of calcium carbonate (chalk) from a saturated calcium bicarbonate solution (i.e. hard water) proceeds at neutral pH (which is typical for the formation of minerals in living animals or sea water) via a very uncommon liquid intermediate, which is remarkable stable and nanosized. The goal of this project is to characterize in situ the mechanism and the intermediate calcium compounds which occur during this precipitation. The employed levitated droplet technique allows an in situ monitoring of the homogenous crystallization of calcium carbonate while avoiding any foreign phase boundaries that may influence the precipitation process by heterogeneous nucleation. Understanding the basics of classical biomineral formation is essential for biomimetic or bio-inspired new materials and for the development of bone implants and bone/teeth substitute materials.

该副本是利用资源的众多研究子项目之一 由NIH/NCRR资助的中心赠款提供。对该子弹的主要支持 而且，副投影的主要研究员可能是其他来源提供的 包括其他NIH来源。 列出的总费用可能 代表subproject使用的中心基础架构的估计量， NCRR赠款不直接向子弹或副本人员提供的直接资金。 碳酸氢钙溶液（即硬水）从中性pH下进行碳酸钙（粉笔）的形成（即硬水）通过非常罕见的液体中间体进行中性pH（这是典型的矿物质或海水中矿物质形成），这是显着稳定和纳米含量的。该项目的目的是原位表征在此降水过程中发生的机理和中间钙化合物。使用的悬浮液滴技术允许原位监测碳酸钙的均匀结晶，同时避免了可能通过异质成核影响降水过程的任何外国相边界。 了解经典生物矿物形成的基础知识对于仿生或生物启发的新材料以及骨植入物和骨/牙齿替代材料的发展至关重要。