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Literature DB >> 23101475

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

Baolei Li¹, Yingwen Cheng, Jie Liu, Congwen Yi, April S Brown, Hsiangkuo Yuan, Tuan Vo-Dinh, Martin C Fischer, Warren S Warren.

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.

Entities: CellLine Chemical Disease Species

Mesh：

Substances：
Oxides
Graphite

Year: 2012 PMID： 23101475 PMCID： PMC3672226 DOI： 10.1021/nl303358p

Source DB: PubMed Journal: Nano Lett ISSN： 1530-6984 Impact factor: 11.189

32 in total

1. Label-free imaging of semiconducting and metallic carbon nanotubes in cells and mice using transient absorption microscopy.

Authors: Ling Tong; Yuxiang Liu; Bridget D Dolash; Yookyung Jung; Mikhail N Slipchenko; Donald E Bergstrom; Ji-Xin Cheng
Journal: Nat Nanotechnol Date: 2011-12-04 Impact factor: 39.213

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

1. Label-free imaging of semiconducting and metallic carbon nanotubes in cells and mice using transient absorption microscopy.

2. Laser scribing of high-performance and flexible graphene-based electrochemical capacitors.

3. Coherent nonlinear optical response of graphene.

4. Electric field effect in atomically thin carbon films.

5. Graphene in mice: ultrahigh in vivo tumor uptake and efficient photothermal therapy.

6. Visualizing graphene based sheets by fluorescence quenching microscopy.

7. Atomic structure of graphene on SiO2.

8. Noninvasive Raman spectroscopy in living mice for evaluation of tumor targeting with carbon nanotubes.

9. Probing skin pigmentation changes with transient absorption imaging of eumelanin and pheomelanin.

10. Quasi-molecular fluorescence from graphene oxide.

1. Transient absorption microscopy: Technological innovations and applications in materials science and life science.

2. Fluorinated graphene nanomaterial causes potential mechanical perturbations to a biomembrane.

3. Surface Curvature Relation to Protein Adsorption for Carbon-based Nanomaterials.

4. Highly sensitive transient absorption imaging of graphene and graphene oxide in living cells and circulating blood.

5. Restricted binding of a model protein on C₃N₄ nanosheets suggests an adequate biocompatibility of the nanomaterial.