Cellular uptake of folate-conjugated lipophilic superparamagnetic iron oxide nanoparticles

Title
Cellular uptake of folate-conjugated lipophilic superparamagnetic iron oxide nanoparticles
Authors
우경자문지형최규실성태연윤권하
Keywords
SPION; surface modification; lipophilic; folate-conjugated; MRI; cellular uptake
Issue Date
2009-04
Publisher
Journal of magnetism and magnetic materials
Citation
VOL 321, 1610-1612
Abstract
Molecular dynamics simulations of the interaction between an edge dislocation and nanosized Cr precipitates in bcc Fe have been performed to investigate the hardening effect of a0 phases in high Cr ferritic/ martensitic steels. The critical resolved shear stress needed for an edge dislocation to overcome Cr precipitates of diameter between 3 and 6 nm is larger than for dislocation glide in the bcc Fe lattice containing 10% Cr solute atoms. This indicates that the precipitation of a0 phases leads to hardening in high Cr ferritic/martensitic steels. The MD simulations reveal that the interspacing of Cr precipitates plays a more crucial role in the hardening of Fe–Cr alloys than the precipitate size. An attractive interaction exists between an edge dislocation and nanosized Cr precipitates, which is evident as a decrease in total energy when an edge dislocation is placed within in a Cr precipitate.
URI
http://pubs.kist.re.kr/handle/201004/45511
ISSN
0304-8853
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KIST Publication > Article
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