Magnetic force driven orientation of Co23B10 arrays inspired by magnetotactic bacteria

Cao, Xuebo; Yu, Fei; Yao, Zhengyu; Li, Lingying

doi:10.1039/b210881j

Cited by 12 publications

(3 citation statements)

References 21 publications

(22 reference statements)

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“…For example, neodium ferrite can be obtained in fields with magnetic induction of 3 × 10 −4 to 3 × 10 −3 and forms the final ferroplastics after the following mechanochemical treatment, such as thermal pressing [44,[49][50][51], Brigman anvil treatment [52], or a combination of different actions [53]. Ordered submicron ferromagnetic Co-B arrays (about 30 nm, aggregated up to 450-600 nm in size) were obtained [54] by NaBH 4 reduction, using the orientation in the magnetic field of the soluble macrocomplexes (Co 2+ with starch). The driving of the magnetic field (1 T) and the mediation of soluble starch play a critical role in the formation of well-defined patterns.…”

Section: Preparation Of Magnetic Polymer Nanocomposites In Magnetic Fmentioning

confidence: 99%

Magnetic Metallopolymer Nanocomposites: Preparation and Properties

Джардималиева

Pomogailo

Rozenberg

et al. 2009

Magnetic Nanoparticles

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IntroductionThe various physical and mechanical parameters of metallopolymeric nanocomposites can be considerably improved with retention or sometimes even with the increase in the conventional magnetic characteristics (saturation magnetization, coercive force, etc.) that show considerable promise for various applications. Such substances are very perspective as high-density information media, materials for permanent magnets, magnetic cooling systems, or fabrication of magnetic sensors. They can also be used for medical and biological applications, e.g., for magnetic resonance tomography, magnetic targeted drug delivery systems, magnetic resonance imaging (MRI) contrast enhancement, color imaging, and cell sorting [1,2].Ferromagnetic metal particles can be formed in a polymer matrix (ferroplastics or ferroelastics) by practically all methods for synthesis of metal nanoparticles in polymers. The manufacturing method can be subdivided into three large groups: physical, chemical, and physicochemical. The division is very conventional and is based mostly on the method of nanoparticle formation and the character of their interactions with the matrix. The first group of methods includes the procedures seemingly devoid of any chemical interactions between the dispersed phase and the dispersion medium. Composites of this type are rare. More popular chemical methods of manufacturing nanocomposites are based on interactions between components anticipated or detected. The reduction reactions and precursors are well known. Nevertheless, the new approaches have been elaborated from practical demands and many details of the chemical reduction are still unclear. The third group of methods are those when metal or their oxide nanoparticles are formed using high-energy processes of atomic metal evaporation, including low-temperature discharge plasma, radiolysis, and photolysis in the presence of monomer and polymer. Recently, such methods have become widely used in vacuum metallization Magnetic Nanoparticles. Sergey P. Gubin

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Section: Preparation Of Magnetic Polymer Nanocomposites In Magnetic Fmentioning

confidence: 99%

Magnetic Metallopolymer Nanocomposites: Preparation and Properties

Джардималиева

Pomogailo

Rozenberg

et al. 2009

Magnetic Nanoparticles

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“…Inspired by magnetotactic bacteria, studies have been made of the reorientation of submicron ferromagnetic Co 23 B 10 arrays by applied magnetic fields. 15 The formation route to these particles was also biologically inspired and involved reduction of Co 21 ions by potassium borohydride in a magnetic field. The magnetic force on the nanoparticles of Co-B alloys caused them to form ordered chains (Fig.…”

Section: Small Particles As Magnetic Sensorsmentioning

confidence: 99%

25 Magnetism

Wills

2004

Annu. Rep. Prog. Chem., Sect. A: Inorg. Chem.

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“…[1,2,[4][5][6][7][8][9][10][11][12] Various efforts to fabricate one-dimensional, two-dimensional (2-D), and three-dimensional (3-D) nanostructures have been made using conventional lithography, [12] nanosphere lithography, [10,11] di-block copolymers template, [13] and anodic aluminum oxide (AAO) templates. [1] Magnetic-field-assisted assembly [14,15] has also been used to form magnetic nanowires, but arranging them in long-range periodic order is still a challenge. In previous reports, magnetic nanowires have been fabricated by electrodeposition [1,2,[4][5][6][7][8] of the material in an AAO template.…”

Section: Introductionmentioning

confidence: 99%

Templated Assembly of Magnetic Cobalt Nanowire Arrays

Srivastava

Singh

Sampson

et al. 2007

Metall Mater Trans A

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A template-assisted assembly technique combined with a chemical synthesis approach has been used to produce high density magnetic cobalt nanowire arrays. Cobalt nanowires were formed using chemical synthesis techniques, by borohydride reduction of cobalt salt in the pores of anodic aluminum oxide (AAO) templates; the samples were annealed in order to achieve nanowires with hcp crystal structure. The morphology and the crystal structure were controlled by the template geometry and annealing conditions, respectively. Magnetic property measurements showed the influence of morphology and crystal structure on the magnetic properties of the arrays.

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Magnetic force driven orientation of Co23B10 arrays inspired by magnetotactic bacteria

Cited by 12 publications

References 21 publications

Magnetic Metallopolymer Nanocomposites: Preparation and Properties

Magnetic Metallopolymer Nanocomposites: Preparation and Properties

25 Magnetism

Templated Assembly of Magnetic Cobalt Nanowire Arrays

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