Synthesis of nanoparticles in the gas phase for electronic, optical and magnetic applications—a review

Kruis, Frank Einar; Fißan, H.; Peled, A.

doi:10.1016/s0021-8502(97)10032-5

Cited by 707 publications

(362 citation statements)

References 151 publications

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“…Even though ion-specific effects have been discussed for a very long time, a detailed examination and transfer of these effects to the nanoenvironment of NPs has long been neglected owing to the unavailability of appropriate test systems. NPs obtained from gas-phase synthesis are barely available in colloidal state owing to their strong agglomeration tendencies and hence undefined surface areas [93,94]. On the other hand, ion-induced interactions with metal surfaces are screened in the presence of surface ligands such as citrate [95] negating a study of these effects with chemically synthesized NPs.…”

Section: Specific Effects Of Ion-inducedmentioning

confidence: 99%

Interaction of colloidal nanoparticles with their local environment: the (ionic) nanoenvironment around nanoparticles is different from bulk and determines the physico-chemical properties of the nanoparticles

Pfeiffer

Rehbock

Hühn

et al. 2014

J. R. Soc. Interface.

321

300

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The physico-chemical properties of colloidal nanoparticles (NPs) are influenced by their local environment, as, in turn, the local environment influences the physico-chemical properties of the NPs. In other words, the local environment around NPs has a profound impact on the NPs, and it is different from bulk due to interaction with the NP surface. So far, this important effect has not been addressed in a comprehensive way in the literature. The vicinity of NPs can be sensitively influenced by local ions and ligands, with effects already occurring at extremely low concentrations. NPs in the Hü ckel regime are more sensitive to fluctuations in the ionic environment, because of a larger Debye length. The local ion concentration hereby affects the colloidal stability of the NPs, as it is different from bulk owing to Debye Hü ckel screening caused by the charge of the NPs. This can have subtle effects, now caused by the environment to the performance of the NP, such as for example a buffering effect caused by surface reaction on ultrapure ligandfree nanogold, a size quenching effect in the presence of specific ions and a significant impact on fluorophore-labelled NPs acting as ion sensors. Thus, the aim of this review is to clarify and give an unifying view of the complex interplay between the NP's surface with their nanoenvironment.

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Section: Specific Effects Of Ion-inducedmentioning

confidence: 99%

Interaction of colloidal nanoparticles with their local environment: the (ionic) nanoenvironment around nanoparticles is different from bulk and determines the physico-chemical properties of the nanoparticles

Pfeiffer

Rehbock

Hühn

et al. 2014

J. R. Soc. Interface.

321

300

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show abstract

“…Such small particles can be advantageously used as a ''mobile substrate'' for bio-assays, or even for in vivo applications; they can be easily recovered from a dispersion, reversibly re-dispersed, etc. Several reviews on the preparation and use of polymer particles and polymer colloids for medical, biological, and optical applications exist (Kruis et al 1998;Kawaguchi 2000). Verpoorte (2003) recently reviewed newly developed technologies for the realization of nanoparticle and microparticle suspension handling systems in general, with a focus on the integration of these applications within microfluidic systems.…”

Section: Introductionmentioning

confidence: 99%

Magnetic bead handling on-chip: new opportunities for analytical applications

Gijs

2004

Microfluid Nanofluid

491

554

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This review describes recent advances in the handling and manipulation of magnetic particles in microfluidic systems. Starting from the properties of magnetic nanoparticles and microparticles, their use in magnetic separation, immuno-assays, magnetic resonance imaging, drug delivery, and hyperthermia is discussed. We then focus on new developments in magnetic manipulation, separation, transport, and detection of magnetic microparticles and nanoparticles in microfluidic systems, pointing out the advantages and prospects of these concepts for future analysis applications.

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“…1 Silver nanoparticles in particular have applications in plasmonics, 2 drug delivery/biological labeling, 3 and chemical catalysis (e.g. for ethene oxidation).…”

mentioning

confidence: 99%

Understanding the Role of Solvation Forces on the Preferential Attachment of Nanoparticles in Liquid

Welch¹,

Woehl²,

Park

et al. 2015

ACS Nano

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Optimization of colloidal nanoparticle synthesis techniques requires an understanding of underlying particle growth mechanisms. Non-classical growth mechanisms are particularly important as they affect nanoparticle size and shape distributions which in turn influence functional properties. For example, preferential attachment of nanoparticles is known to lead to the formation of mesocrystals, although the formation mechanism is currently not well understood. Here we employ in situ liquid cell scanning transmission electron microscopy (STEM) and steered molecular dynamics (SMD) simulations to demonstrate that the experimentally observed preference for end-to-end attachment of silver nanorods is a result of weaker solvation forces occurring at rod ends. SMD reveals that when the side of a nanorod approaches another rod, perturbation in the surface bound water at the nanorod surface creates significant energy barriers to attachment. Additionally, rod morphology (i.e. facet shape) effects can explain the majority of the side attachment effects that are observed experimentally.

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Synthesis of nanoparticles in the gas phase for electronic, optical and magnetic applications—a review

Cited by 707 publications

References 151 publications

Interaction of colloidal nanoparticles with their local environment: the (ionic) nanoenvironment around nanoparticles is different from bulk and determines the physico-chemical properties of the nanoparticles

Interaction of colloidal nanoparticles with their local environment: the (ionic) nanoenvironment around nanoparticles is different from bulk and determines the physico-chemical properties of the nanoparticles

Magnetic bead handling on-chip: new opportunities for analytical applications

Understanding the Role of Solvation Forces on the Preferential Attachment of Nanoparticles in Liquid

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