منابع مشابه
Pristine presolar silicon carbide
We report the results of a study of 81 micrometer-sized presolar SiC grains in the size range 0.5–2.6 m from the Murchison (CM2) carbonaceous chondrite. We describe a simple, nondestructive physical disaggregation technique used to isolate the grains while preserving them in their pristine state, as well as the scanning electron microscopy energy-dispersive X-ray mapping procedure used to locat...
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We map and analyse the Human Footprint Index at 1 km scale for 1834 terrestrial Nature Reserves of mainland China. There are fewer, larger, more pristine reserves in the colder, drier, less densely-populated pastoral areas of the north and west; and more numerous, smaller, more heavily modified reserves in the warmer, wetter, more densely populated arable agricultural areas of the south and eas...
متن کاملPristine-to-pristine regime of plastic deformation in submicron-sized single crystal gold particles
Pristine single crystalline gold particles with sizes ranging from 300 to 700 nm have been fabricated through high-temperature (1150 C) liquid de-wetting of gold thin films atop a specially designed SiO2/Si substrate for in situ transmission electron microscopy testing. Quantitative compression tests showed that these particles display cataclysmic structural collapse immediately following elast...
متن کاملNanofabrication: pristine quantum devices on demand.
C arbon nanomaterials such as carbon nanotubes 1 and graphene 2 are low-dimensional materials that can have defect-free lattices over microscopic length scales, which is a feature that only a few other nanomaterials can offer. Despite the excitement that these materials have generated in the condensed-matter physics community due to their potential as playgrounds for quantum transport study, th...
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ژورنال
عنوان ژورنال: Nature Materials
سال: 2013
ISSN: 1476-1122,1476-4660
DOI: 10.1038/nmat3616