دورية أكاديمية
Precursor-Less Coating of Nanoparticles in the Gas Phase
| العنوان: | Precursor-Less Coating of Nanoparticles in the Gas Phase |
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| المؤلفون: | Tobias V. Pfeiffer, Puneet Kedia, Maria E. Messing, Mario Valvo, Andreas Schmidt-Ott |
| المصدر: | Materials, Vol 8, Iss 3, Pp 1027-1042 (2015) |
| بيانات النشر: | MDPI AG, 2015. |
| سنة النشر: | 2015 |
| المجموعة: | LCC:Technology LCC:Electrical engineering. Electronics. Nuclear engineering LCC:Engineering (General). Civil engineering (General) LCC:Microscopy LCC:Descriptive and experimental mechanics |
| مصطلحات موضوعية: | spark ablation, nanoparticles, coating, gas phase, continuous process, Technology, Electrical engineering. Electronics. Nuclear engineering, TK1-9971, Engineering (General). Civil engineering (General), TA1-2040, Microscopy, QH201-278.5, Descriptive and experimental mechanics, QC120-168.85 |
| الوصف: | 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 manner that can be modeled as bimodal coagulation. Gold was deposited onto core nanoparticles consisting of silver or polystyrene latex, and silver was deposited onto gold nanoparticles. The coating morphology depends on the relative surface energies of the core and coating materials, similar to the growth mechanisms known for thin films: a coating made of a substance having a high surface energy typically results in a patchy coverage, while a coating material with a low surface energy will normally “wet” the surface of a core particle. The coated particles remain gas-borne, allowing further processing. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1996-1944 |
| Relation: | http://www.mdpi.com/1996-1944/8/3/1027; https://doaj.org/toc/1996-1944 |
| DOI: | 10.3390/ma8031027 |
| URL الوصول: | https://doaj.org/article/4f139aac14724925a3262eb7b1ed6852 |
| رقم الأكسشن: | edsdoj.4f139aac14724925a3262eb7b1ed6852 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 19961944 |
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| DOI: | 10.3390/ma8031027 |