An AFM investigation of the mesostructure of Fe-based nanocrystalline ribbon

Abstract

The mesostructure at the cross section of the Fe-based nanocrystalline (Fe73.sCujNb3Si13.sB9) ribbon was observed with atomic force microscopy (AFM). An apparent mesostructural difference was found between the sticking roller face area (SRFA) and the free face area (FFA) of the ribbon crystallized after annealing. In SRFA there is a preponderance of rough grain gathering in longitudinal arrangement, while in FFA a fine grain gathering arranged transversely dominates. This phenomenon could be due to the different residual stress remained in the different areas of the amorphous ribbon resulting from the single-roller quenching technique.

Temperature sensitive hybrid microgels loaded with ZnO nanoparticles

“…These drawbacks limit potential applications of hybrid microgels, especially when NPs show sizedependent properties, such as absorption and luminescence 26 or magnetic properties. 27 A number of studies have been reported in the literature on the synthesis of hybrid microgels containing a variety of metal NPs (Au, 28 Ag, 29 Pd, 30 and Pt 31 ) or metal oxides (Fe 3 O 4 , 21 Fe 2 O 3 , 25 ), sulfides and other inorganic materials (CdS, 32 CuS, 33 ZnS, 23 CdTe, 34 SiO 2 , 35 and CaCO 3 36 ). To the best of our knowledge, investigations on the preparation and characterization of hybrid microgels containing ZnO NPs have never been explored.…”

Microhydrogel surface-supported quaternary ammonium peroxotungstophosphate as reusable catalytic materials for oxidation of DBT

“…Employing poly(N-isopropylacrylamide-co-acrylic acid), poly(N-isopropylacrylamide-comethacrylic acid), polyacrylamide, and poly(N-isopropylacrylamide) 1381-5148/$ -see front matter Ó 2011 Elsevier Ltd. All rights reserved. doi:10.1016/j.reactfunctpolym.2011.01.003 microgels as templates, several interesting polymeric composite microspheres have been successfully synthesized [16][17][18][19][20][21]. After combing our previous research and the protocol for the construction of the integration microsphere with the water pool and surfactant shell used in biphasic catalytic reactions, composite microspheres with PAM microgel cores and shells of polymerizable surfactant/polyoxometalate complexes were synthesized.…”

Controllable synthesis of CuS–P(AM-co-MAA) composite microspheres with patterned surface structures

“…In the past few years, our research group has proposed a novel polymeric microgel template method and we have successfully prepared various inorganic-polymer composite microspheres with peculiar surface structures, such as metal sulfide-polymer, metalpolymer, insoluble salt-polymer, and oxide-polymer composites [41][42][43][44][45][46][47][48][49][50]. It has been found that the surface structures of the composite microspheres may be tailored to some extent by varying the chemical composition of the polymer microgels and by modulating the amount and type of inorganic compound deposited.…”