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

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

doi:10.1021/nl303358p

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

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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

31 Scopus citations

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.

Original language	English
Pages (from-to)	5936-5940
Number of pages	5
Journal	Nano Letters
Volume	12
Issue number	11
DOIs	https://doi.org/10.1021/nl303358p
State	Published - 14 Nov 2012
Externally published	Yes

Keywords

Graphene
graphene layer counting
nonlinear microscopy
optical pulse shaping

ASJC Scopus subject areas

Bioengineering
General Chemistry
General Materials Science
Condensed Matter Physics
Mechanical Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1021/nl303358p

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title = "Direct optical imaging of graphene in vitro by nonlinear femtosecond laser spectral reshaping",

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.",

keywords = "Graphene, graphene layer counting, nonlinear microscopy, optical pulse shaping",

author = "Baolei Li and Yingwen Cheng and Jie Liu and Congwen Yi and Brown, \{April S.\} and Hsiangkuo Yuan and Tuan Vo-Dinh and Fischer, \{Martin C.\} and Warren, \{Warren S.\}",

year = "2012",

month = nov,

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doi = "10.1021/nl303358p",

language = "English",

volume = "12",

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journal = "Nano Letters",

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T1 - Direct optical imaging of graphene in vitro by nonlinear femtosecond laser spectral reshaping

AU - Li, Baolei

AU - Cheng, Yingwen

AU - Liu, Jie

AU - Yi, Congwen

AU - Brown, April S.

AU - Yuan, Hsiangkuo

AU - Vo-Dinh, Tuan

AU - Fischer, Martin C.

AU - Warren, Warren S.

PY - 2012/11/14

Y1 - 2012/11/14

N2 - 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.

AB - 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.

KW - Graphene

KW - graphene layer counting

KW - nonlinear microscopy

KW - optical pulse shaping

UR - https://www.scopus.com/pages/publications/84869171030

U2 - 10.1021/nl303358p

DO - 10.1021/nl303358p

M3 - Article

C2 - 23101475

AN - SCOPUS:84869171030

SN - 1530-6984

VL - 12

SP - 5936

EP - 5940

JO - Nano Letters

JF - Nano Letters

IS - 11

ER -

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

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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