نتایج جستجو برای: nano crystalline materials
تعداد نتایج: 510559 فیلتر نتایج به سال:
Nano-silicon is a nanostructured material in which quantum or spatial confinement is the origin of the material's luminescence. When nano-silicon is broken into colloidal crystalline nanoparticles, its luminescence can be tuned across the visible spectrum only when the sizes of the nanoparticles, which are obtained via painstaking filtration methods that are difficult to scale up because of low...
Calcified coccolithophores generate calcium carbonate scales around their cell surface. In light of predicted climate change and the global carbon cycle, the biomineralization ability of coccoliths has received growing interest. However, the underlying biomineralization mechanism is not yet well understood; the lack of non-invasive characterizing tools to obtain molecular level information invo...
The structural and magnetic properties of Co68Fe24Zr8/Al2O3 multilayers grown by using magnetron sputtering were investigated with x-ray reflectivity, transmission electron microscopy and magneto-optical Kerr effect. The Co68Fe24Zr8 form amorphous islands when the nominal thickness of the Co68Fe24Zr8 layers is 10 Å, exhibiting an isotropic superparamagnetic behavior. Continuous layers with most...
Summary The potential environmental and health impacts of nano-technologies triggered a recent surge of life cycle assessment (LCA) studies on nano-technologies. Focusing on the energy use and greenhouse gas emissions impacts, we reviewed 22 LCA-based studies on nano-materials, coatings, photovoltaic devices, and fabrication technologies that were published until 2011. The rev...
The topic of this project belongs to focus area #3 of the NSF solicitation: " Micro/Nanoscale Phenom-enology and Metrology. " Nano-structured materials are extremely attractive for applications requiring high strength and ductility. Two such areas are: (1) nano-layered composites for future aerospace applications demanding high strength-to-weight ratios; and (2) next-generation interconnect and...
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