Nondestructive Analysis of Nanomaterials using Optofluidic Assisted Raman Spectroscopy (Invited)

机译：使用光流辅助拉曼光谱对纳米材料进行无损分析（邀请）

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This talk will review and compare the different optofluidic techniques for enhancing the retrieved Raman signal of nanomaterials in liquids and aerosols. Recent progress on this front utilizing optofluidics such as photonic crystal waveguides will be discussed. Techniques and applications to combine surface enhanced with optofluidic-assisted Raman spectroscopy will be also reviewed. Challenges and future opportunities to advance optofluidics-assisted Raman spectroscopy that are carried out using portable Raman spectrometers and controlled using handheld controllers such as mobile phones will be presented. As an example, a detailed, non-destructive characterization of CdTe nanoparticles using Raman spectroscopy using concentrations of 2 mg/mL, will be highlighted. Our platform allows clear vibrational modes corresponding to the structure and interactions of the QDs to be observed. These vibrational modes include those of the CdTe core, Te defects, CdSTe interface, thiol agent and carboxylate-metal complexes. These modes are correlated with the crystallinity of the QD core, interfacial structure formed upon stabilization, QD-thiol interaction mechanisms, water solubility of the QDs and their potential bio-conjugation abilities.

机译：本讲座将回顾和比较不同的光流体技术，以增强液体和气溶胶中纳米材料的拉曼信号。将讨论利用光流体如光子晶体波导的这一方面的最新进展。还将综述结合表面增强技术和光流辅助拉曼光谱的技术和应用。将介绍使用便携式拉曼光谱仪进行并通过手持控制器（例如手机）进行控制的光流体辅助拉曼光谱技术发展所面临的挑战和未来机遇。作为示例，将突出显示使用浓度为2 mg / mL的拉曼光谱对CdTe纳米颗粒进行详细的非破坏性表征。我们的平台允许观察与QD的结构和相互作用相对应的清晰振动模式。这些振动模式包括CdTe核，Te缺陷，CdSTe界面，硫醇剂和羧酸盐金属络合物的振动模式。这些模式与QD核的结晶度，稳定化后形成的界面结构，QD-硫醇相互作用机理，QD的水溶性及其潜在的生物结合能力有关。

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来源
《Synthesis and photonics of nanoscale materials XII》|2015年|935206.1-935206.5|共5页
会议地点 San Francisco CA(US)
作者
Amr S. Helmy; Jacky S. W. Mak; S. A. Rutledge; J. Ramanan;
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作者单位

Department of electrical and Computer Engineering, University of Toronto, Toronto M5S 3G4, Canada;

Department of electrical and Computer Engineering, University of Toronto, Toronto M5S 3G4, Canada;

Department of electrical and Computer Engineering, University of Toronto, Toronto M5S 3G4, Canada;

Department of electrical and Computer Engineering, University of Toronto, Toronto M5S 3G4, Canada;

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原文格式 PDF
正文语种 eng
中图分类
关键词
Raman Spectroscopy; Nanomaterials; Optical Sensing; Opto-fluidics;

机译：拉曼光谱纳米材料光学传感光流体;

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1. A nondestructive tool for nanomaterials: Raman and photoluminescence spectroscopy [J] . Singha A, Dhar P, Roy A American journal of physics . 2005,第3期

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2. Recent developments in optofluidic-assisted Raman spectroscopy [J] . Jacky S.W. Mak, Steve A. Rutledge, Rashid M. Abu-Ghazalah, Progress in Quantum Electronics . 2013,第1期

机译：光流体辅助拉曼光谱学的最新进展
3. Nondestructive analysis of jade artifacts from the Cemetery of the Ying State in Henan Province, China using confocal Raman microspectroscopy and portable X-ray fluorescence spectroscopy [J] . H. X. Zhao, Q. H. Li, S. Liu, Journal of Raman Spectroscopy: An International Journal for Original Work in All Aspects of Raman Spectroscopy, Including Higher Order Processes, and Also Brillouin- and Rayleigh Scattering . 2014,第2期

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4. Nondestructive Analysis of Nanomaterials using Optofluidic Assisted Raman Spectroscopy (Invited) [C] . Amr S. Helmy, Jacky S. W. Mak, S. A. Rutledge, Conference on synthesis and photonics of nanoscale materials XII . 2015

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5. An optofluidic surface enhanced Raman spectroscopy microsystem for sensitive detection of chemical and biological molecules. [D] . Hossein Yazdi, Soroush. 2013

机译：光学流体表面增强拉曼光谱微系统，用于化学和生物分子的灵敏检测。
6. A nanoporous optofluidic microsystem for highly sensitive and repeatable surface enhanced Raman spectroscopy detection [O] . Soroush H. Yazdi, Ian M. White 2012

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7. Continuous Gradient Temperature Raman Spectroscopy of Fish Oils Provides Detailed Vibrational Analysis and Rapid, Nondestructive Graphical Product Authentication [O] . C. Broadhurst, Walter Schmidt, Jianwei Qin, 2018

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Nondestructive Analysis of Nanomaterials using Optofluidic Assisted Raman Spectroscopy (Invited)

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