Radiofrequency heating pathways for gold nanoparticles.
Radiofrequency heating pathways for gold nanoparticles.
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DOI：
10.1039/c4nr00464g
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发表时间：
2014-08-07
期刊：
影响因子：
6.7
通讯作者：
Ackerson CJ
中科院分区：
文献类型：
--
作者：
Collins CB;McCoy RS;Ackerson BJ;Collins GJ;Ackerson CJ
这篇专题文章综述了射频（RF）照射下纳米级金的热耗散。它还提供了以前未发表的数据，解决这一现象的模糊方面。虽然在生物学中的应用动机的RF加热的金纳米粒子的初步调查，最近的争议是否热效应可以归因于纳米级的黄金突出需要了解所涉及的机制或机制的加热。颗粒的性质和RF场的性质都会影响加热。纳米粒子化学和物理学的方面，包括粒子的流体动力学直径、核的氧化态和相关磁性以及配体壳的化学性质，都可能强烈影响纳米粒子在RF场中加热的程度。RF的方面包括：功率、频率和天线设计强调磁场或电场的相对强度，也影响金纳米颗粒在RF中加热的程度。这些纳米粒子和RF属性进行了分析的背景下提出的三个加热机制来解释金纳米粒子加热的RF场。本文还对现有文献中的纳米颗粒制备、RF结构和先前报道的实验中提出的机制进行了批判性分析。
This feature article reviews the thermal dissipation of nanoscopic gold under radiofrequency (RF) irradiation. It also presents previously unpublished data addressing obscure aspects of this phenomenon. While applications in biology motivated initial investigation of RF heating of gold nanoparticles, recent controversy concerning whether thermal effects can be attributed to nanoscopic gold highlight the need to understand the involved mechanism or mechanisms of heating. Both the nature of the particle and the nature of the RF field influence heating. Aspects of nanoparticle chemistry and physics, including the hydrodynamic diameter of the particle, the oxidation state and related magnetism of the core, and the chemical nature of the ligand shell may all strongly influence to what extent a nanoparticle heats in an RF field. Aspects of RF include: power, frequency and antenna designs that emphasize relative strength of magnetic or electric fields, and also influence the extent to which a gold nanoparticle heats in RF. These nanoparticle and RF properties are analysed in the context of three heating mechanisms proposed to explain gold nanoparticle heating in an RF field. This article also makes a critical analysis of the existing literature in the context of the nanoparticle preparations, RF structure, and suggested mechanisms in previously reported experiments.