2015
DOI: 10.3390/ma8031027
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Precursor-Less Coating of Nanoparticles in the Gas Phase

Abstract: This article introduces a continuous, gas-phase method for depositing thin metallic coatings onto (nano)particles using a type of physical vapor deposition (PVD) at ambient pressure and temperature. An aerosol of core particles is mixed with a metal vapor cloud formed by spark ablation by passing the aerosol through the spark zone using a hollow electrode configuration. The mixing process rapidly quenches the vapor, which condenses onto the core particles at a timescale of several tens of milliseconds in a man… Show more

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Cited by 14 publications
(14 citation statements)
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References 32 publications
(48 reference statements)
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“…Avoiding coalescence of the colliding particles on the substrate is a prerequisite to retain these properties. An elegant way to hinder coalescence is by coating the particles (e.g., with an oxidized layer) while they are still suspended in the gas (i.e., before deposition) 59 60 . For deposited uncoated particles, coalescence on the substrate can be avoided by keeping the surface coverage low enough (cf.…”
Section: Discussionmentioning
confidence: 99%
“…Avoiding coalescence of the colliding particles on the substrate is a prerequisite to retain these properties. An elegant way to hinder coalescence is by coating the particles (e.g., with an oxidized layer) while they are still suspended in the gas (i.e., before deposition) 59 60 . For deposited uncoated particles, coalescence on the substrate can be avoided by keeping the surface coverage low enough (cf.…”
Section: Discussionmentioning
confidence: 99%
“…25,28,29 This technique have focused on fabricating NPs using spark ablation (at low frequencies) for a number of new applications (Table S1). 3,6,7,19,25,29,[33][34][35][36][37][38]31,[39][40][41][42][43][44] Note that carrier gases and electrodes determine the particle composition. 25 Although manufacturing electrodes may not be particularly green, the use of recycled metals allows the green manufacturing of NPs.…”
Section: High-yield and Continuous Synthesis Of Ultrapure Inorganic Nmentioning
confidence: 99%
“…In the BUONAPART-E project, 21 partners from both industry and academia worked on this upscaling approach and realized a production rate of 100 kg day −1 (BUONAPART-E). Although the SDG has been around us since the invention of the gasoline engine, its first use as an intentional nanoparticle generator dates to 1988 (Schwyn et al 1988), which is now commercially available (Helsper et al 1993), and used by several groups (Messing et al 2010a, Messing et al 2010b, Kala et al 2016, Pfeiffer et al 2015, Bae et al 2017, Muntean et al 2016, Byeon et al 2009, the very fundamentals of the processes leading to particle formation is not yet fully understood. One reason for this knowledge gap lies in the difficulty of investigating the different stages of nanoparticle formation, especially the initial, early phase of the process.…”
Section: Introductionmentioning
confidence: 99%