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Nonlinear photoluminescence imaging of isotropic and liquid crystalline dispersions of graphene oxide.各向同性和液晶氧化石墨烯分散体的非线性光致发光成像。
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Pump-probe imaging of historical pigments used in paintings.绘画中使用的历史颜料的泵浦探测成像。
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Laser scribing of high-performance and flexible graphene-based electrochemical capacitors.激光刻蚀高性能、柔性的基于石墨烯的电化学超级电容器。
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Quasi-molecular fluorescence from graphene oxide.氧化石墨烯的准分子荧光。
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High-throughput graphene imaging on arbitrary substrates with widefield Raman spectroscopy.利用宽场拉曼光谱对任意衬底上的高通量石墨烯进行成像。
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Graphene-based nanoplatelets: a new risk to the respiratory system as a consequence of their unusual aerodynamic properties.基于石墨烯的纳米片：由于其异常的空气动力学特性，对呼吸系统的新风险。
ACS Nano. 2012 Jan 24;6(1):736-46. doi: 10.1021/nn204229f. Epub 2012 Jan 6.
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Nat Nanotechnol. 2011 Dec 4;7(1):56-61. doi: 10.1038/nnano.2011.210.
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Minimizing oxidation and stable nanoscale dispersion improves the biocompatibility of graphene in the lung.最小化氧化和稳定的纳米分散度可提高石墨烯在肺部的生物相容性。
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Pump-probe imaging differentiates melanoma from melanocytic nevi.泵浦探测成像可区分黑素瘤与黑素细胞痣。
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利用飞秒激光光谱整形技术对体外石墨烯进行直接光学成像。

Direct optical imaging of graphene in vitro by nonlinear femtosecond laser spectral reshaping.

机构信息

Department of Physics, Duke University, Durham, North Carolina 27708, USA.

出版信息

Nano Lett. 2012 Nov 14;12(11):5936-40. doi: 10.1021/nl303358p. Epub 2012 Oct 30.

DOI:10.1021/nl303358p
PMID:23101475
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3672226/
Abstract

Nonlinear optical microscopy, based on femtosecond laser spectral reshaping, characterized and imaged graphene samples made from different methods, both on slides and in a biological environment. This technique clearly discriminates between graphene flakes with different numbers of layers and reveals the distinct nonlinear optical properties of reduced graphene oxide as compared to mechanically exfoliated or chemical vapor deposition grown graphene. The nonlinearity makes it applicable to scattering samples (such as tissue) as opposed to previous methods, such as transmission. This was demonstrated by high-resolution imaging of breast cancer cells incubated with graphene flakes.

摘要

基于飞秒激光光谱整形的非线性光学显微镜，对不同方法制备的石墨烯样品进行了特征成像和分析，包括在玻片上和生物环境中。该技术可明确区分具有不同层数的石墨烯薄片，并显示还原氧化石墨烯与机械剥离或化学气相沉积生长的石墨烯相比具有独特的非线性光学性质。与以往的透射方法相比，该非线性光学性质使得该技术适用于散射样品（如组织）。这一点通过用石墨烯薄片孵育的乳腺癌细胞的高分辨率成像得到了证明。