Nanoparticle plasma ejected directly from solid copper by localized microwaves

IF 3.8 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2009-11-09 DOI:10.1063/1.3259781

E. Jerby, A. Golts, Y. Shamir, S. Wonde, J. Mitchell, J. LeGarrec, T. Narayanan, M. Sztucki, D. Ashkenazi, Z. Barkay, N. Eliaz

引用次数: 42

Abstract

A plasma column ejected directly from solid copper by localized microwaves is studied. The effect stems from an induced hotspot that melts and emits ionized copper vapors as a confined fire column. Nanoparticles of ∼20–120 nm size were revealed in the ejected column by in situ small-angle x-ray scattering. Optical spectroscopy confirmed the dominance of copper particles in the plasma column originating directly from the copper substrate. Nano- and macroparticles of copper were verified also by ex situ scanning electron microscopy. The direct conversion of solid metals to nanoparticles is demonstrated and various applications are proposed.

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用局部微波直接从固体铜中射出纳米粒子等离子体

研究了局部微波直接从固体铜中射出的等离子体柱。这种效应源于一个诱导热点，它熔化并释放出电离的铜蒸汽作为一个受限的火柱。通过原位小角x射线散射，在喷射柱中发现了尺寸为~ 20 ~ 120nm的纳米颗粒。光谱学证实了等离子体柱中铜颗粒的优势，这些铜颗粒直接来自铜衬底。用非原位扫描电镜对铜的纳米颗粒和宏观颗粒进行了验证。证明了固体金属直接转化为纳米颗粒，并提出了各种应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.