Measuring the Optical Absorption Cross Sections of Au-Ag Nanocages and Au Nanorods by Photoacoustic Imaging
文献类型：期刊论文
| 作者 | Cho, EC ; Kim, C ; Zhou, F ; Cobley, CM ; Song, KH ; Chen, JY ; Li, ZY ; Wang, LHV ; Xia, YN |
| 刊名 | JOURNAL OF PHYSICAL CHEMISTRY C
 |
| 出版日期 | 2009 |
| 卷号 | 113期号:21页码:9023 |
| 关键词 | SHAPE-CONTROLLED SYNTHESIS IMMUNO GOLD NANOCAGES BIOMEDICAL APPLICATIONS COHERENCE TOMOGRAPHY IN-VIVO PLASMONIC PROPERTIES METAL NANOPARTICLES CONTRAST AGENTS CANCER-CELLS SCATTERING |
| ISSN号 | 1932-7447 |
| 通讯作者 | Wang, LHV: Washington Univ, Dept Biomed Engn, St Louis, MO 63130 USA. |
| 中文摘要 | This paper presents a method for measuring the optical absorption cross sections (sigma(a)) of Au-Ag nanocages and An nanorods. The method is based on photoacoustic (PA) imaging, where the detected signal is directly proportional to the absorption coefficient (mu(a)) of the nanostructure. For each type of nanostructure, we first obtained mu(a) from the PA signal by benchmarking against a linear calibration curve (PA signal versus mu(a)) derived from a set of methylene blue solutions with different concentrations. We then calculated or sigma(a) by dividing the mu(a) by the cot-responding concentration of the Au nanostructure. Additionally, we obtained the extinction cross section (sigma(e), sum of absorption and scattering) from the extinction spectrum recorded using a conventional UV-vis-NIR spectrometer. From the measurements of sigma(a) and sigma(c), we were able to easily derive both the absorption and scattering cross sections for each type of gold nanostructure. The ratios of absorption to extinction obtained from experimental and theoretical approaches agreed well, demonstrating the potential use of this method in determining the optical absorption and scattering properties of gold nanostructures and other types of nanomaterials. |
| 收录类别 | SCI |
| 资助信息 | National Institutes of Health [R01 EB000712, R01 EB008085, R01 NS46214, U54 CA136398, DP1 OD000798-04]; National Natural Science Foundation of China [60736041, 10874238]; Korean Government [KRF-2007-357-D00070] |
| 语种 | 英语 |
| 公开日期 | 2013-09-18 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/41847]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Cho, EC,Kim, C,Zhou, F,et al. Measuring the Optical Absorption Cross Sections of Au-Ag Nanocages and Au Nanorods by Photoacoustic Imaging[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2009,113(21):9023. |
| APA | Cho, EC.,Kim, C.,Zhou, F.,Cobley, CM.,Song, KH.,...&Xia, YN.(2009).Measuring the Optical Absorption Cross Sections of Au-Ag Nanocages and Au Nanorods by Photoacoustic Imaging.JOURNAL OF PHYSICAL CHEMISTRY C,113(21),9023. |
| MLA | Cho, EC,et al."Measuring the Optical Absorption Cross Sections of Au-Ag Nanocages and Au Nanorods by Photoacoustic Imaging".JOURNAL OF PHYSICAL CHEMISTRY C 113.21(2009):9023. |
入库方式： OAI收割
来源：物理研究所
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