期刊
SCIENCE
卷 344, 期 6184, 页码 623-626出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1251594
关键词
-
资金
- Engineering and Physical Sciences Research Council (EPSRC), UK [EP/G036780/1]
- Bristol Centre for Functional Nanomaterials
- EPSRC under their Building Global Engagements in Research scheme [EP/K004581/1]
- Electron and Scanning Probe Microscopy Facility and Electron Microscopy Group in the Schools of Chemistry and Physics, University of Bristol
- National Institute for Materials Science (NIMS) in Japan
- Ministry of Education, Culture, Sports, Science and Technology, Japan
- Engineering and Physical Sciences Research Council [EP/K004581/1] Funding Source: researchfish
- EPSRC [EP/K004581/1] Funding Source: UKRI
The growth of metal oxide nanowires can proceed via a number of mechanisms such as screw dislocation, vapor-liquid-solid process, or seeded growth. Transmission electron microscopy (TEM) can resolve nanowires but invariably lacks the facility for direct observation of how nanowires form. We used a transmission electron microscope equipped with an in situ heating stage to follow the growth of quaternary metal oxide nanowires. Video-rate imaging revealed barium carbonate nanoparticles diffusing through a porous matrix containing copper and yttrium oxides to subsequently act as catalytic sites for the outgrowth of Y2BaCuO5 nanowires on reaching the surface. The results suggest that sites on the rough surface of the porous matrix act as microcrucibles and thus provide insights into the mechanisms that drive metal oxide nanowire growth at high temperatures.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据