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Search for "monodisperse" in Full Text gives 134 result(s) in Beilstein Journal of Nanotechnology.
Platinum nanoparticles from size adjusted functional colloidal particles generated by a seeded emulsion polymerization process
Beilstein J. Nanotechnol. 2011, 2, 459–472, doi:10.3762/bjnano.2.50
- initiator to monomer and the choice of surfactant and composition of the continuous phase. Critical parameters affecting the control of the reaction are determined. If carefully controlled, the seeded emulsion polymerization with functional seed particles yields monodisperse particles with adjustable size
- ]. Results and Discussion 1 Adjustment of colloidal size by a seeded emulsion polymerization process In order to combine the advantages of both miniemulsion- and emulsion polymerization to create monodisperse functional colloidal particles with precisely adjustable sizes, a seeded emulsion polymerization
Kinetic lattice Monte-Carlo simulations on the ordering kinetics of free and supported FePt L10-nanoparticles
Beilstein J. Nanotechnol. 2011, 2, 40–46, doi:10.3762/bjnano.2.5
- experimentally that ordered arrays of particles with monodisperse size distribution can be prepared by various synthesis routes ([3] and references therein). The as-prepared particles, however, are in most cases partially disordered and can also contain twin planes [4]. In the past, major attention has been paid
Magnetic interactions between nanoparticles
Beilstein J. Nanotechnol. 2010, 1, 182–190, doi:10.3762/bjnano.1.22
- ]. Moreover, below T0 the memory and rejuvenation phenomena that are characteristic for spin-glass behavior have been observed [20]. The studies of ‘super spin-glass’ behavior have recently been reviewed [21][22]. As an example, Figure 1 shows the relaxation time of suspensions of nearly monodisperse 4.7 nm
- nearly monodisperse particles suspended in decalin as a function of temperature. The data were obtained from AC susceptibility measurements. The open circles are data from a dilute sample, whereas the full circles are data for a concentrated sample. The insets show a transmission electron microscopy (TEM
Magnetic nanoparticles for biomedical NMR-based diagnostics
Beilstein J. Nanotechnol. 2010, 1, 142–154, doi:10.3762/bjnano.1.17
- found to be highly monodisperse and superparamagnetic at 300 K (Figure 2a). The MNPs were subsequently rendered water-soluble using the small molecule, meso-2,3-dimercaptosuccinic acid (DMSA). DMSA has a terminal carboxylic acid group at one end which interacts directly with the magnetic core, and a
Ultrafine metallic Fe nanoparticles: synthesis, structure and magnetism
Beilstein J. Nanotechnol. 2010, 1, 108–118, doi:10.3762/bjnano.1.13
- , monodisperse, with a diameter below 2 nm, which corresponds to a number of around 200 atoms. The X-ray absorption near-edge structure and Mössbauer spectrum are characteristic of metallic Fe. The structural studies by wide angle X-ray scattering indicate an original polytetrahedral atomic arrangement similar
Magnetic coupling mechanisms in particle/thin film composite systems
Beilstein J. Nanotechnol. 2010, 1, 101–107, doi:10.3762/bjnano.1.12
- (AFM) images in Figure 1a and scanning electron microscopy (SEM) images in Figure 1b. The monodisperse nature of the particles and their ordering can be observed in these images. Furthermore, in both images common faults can be seen which are encountered in NP monolayer samples prepared by spin-coating
Review and outlook: from single nanoparticles to self-assembled monolayers and granular GMR sensors
Beilstein J. Nanotechnol. 2010, 1, 75–93, doi:10.3762/bjnano.1.10
- This paper highlights recent advances in synthesis, self-assembly and sensing applications of monodisperse magnetic Co and Co-alloyed nanoparticles. A brief introduction to solution phase synthesis techniques as well as the magnetic properties and aspects of the self-assembly process of nanoparticles
Flash laser annealing for controlling size and shape of magnetic alloy nanoparticles
Beilstein J. Nanotechnol. 2010, 1, 55–59, doi:10.3762/bjnano.1.7
- applications depend on the ability to synthesize NPs with a very good control over the size distribution and the chemical composition. Up to now, only chemical synthesis is able to produce monodisperse CoPt [6] and FePt [7][8] NPs with a polydispersity (that is, standard deviation divided by the mean size) as
- small as 10%. However, chemically prepared monodisperse bimetallic NPs are limited to sub-10 nm diameter, and postsynthesis thermal treatments used to increase NPs size, inevitably widen size dispersion. Vapour phase homogenous nucleation allows the fabrication of sub-10 nm and sup-10 nm particles, but
- effects are obtained with CoPt thin films near the percolation threshold, indicating that the morphological transformations does not depend on the as-grown film morphology. If flash laser annealing experiments always result in spherical and monodisperse NPs, the nominal thickness of the as-grown film can
Preparation and characterization of supported magnetic nanoparticles prepared by reverse micelles
Beilstein J. Nanotechnol. 2010, 1, 24–47, doi:10.3762/bjnano.1.5
- atoms from a specific target which then agglomerate into clusters in a continuous gas flow before landing on a support [16][17]. This method has the advantage of full processing under vacuum conditions and, moreover, monodisperse NPs can be prepared by size selection during flight [18][19]. One general
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