Optical contrast and refractive index of natural van der Waals heterostructure nanosheets of franckeite

Patricia Gant; Foad Ghasemi; David Maeso; Carmen Munuera; Elena López-Elvira; Riccardo Frisenda; David Pérez De Lara; Gabino Rubio-Bollinger; Mar Garcia-Hernandez; Andres Castellanos-Gomez

doi:10.3762/bjnano.8.235

Optical contrast and refractive index of natural van der Waals heterostructure nanosheets of franckeite

Patricia Gant, Foad Ghasemi, David Maeso, Carmen Munuera, Elena López-Elvira, Riccardo Frisenda, David Pérez De Lara, Gabino Rubio-Bollinger, Mar Garcia-Hernandez, Andres Castellanos-Gomez^*

^*Corresponding author for this work

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

19 Scopus citations

Abstract

We study mechanically exfoliated nanosheets of franckeite by quantitative optical microscopy. The analysis of transmission-mode and epi-illumination-mode optical microscopy images provides a rapid method to estimate the thickness of the exfoliated flakes at first glance. A quantitative analysis of the optical contrast spectra by means of micro-reflectance allows one to determine the refractive index of franckeite over a broad range of the visible spectrum through a fit of the acquired spectra to a model based on the Fresnel law.

Original language	English
Pages (from-to)	2357-2362
Number of pages	6
Journal	Beilstein Journal of Nanotechnology
Volume	8
Issue number	1
DOIs	https://doi.org/10.3762/bjnano.8.235
State	Published - 2017
Externally published	Yes

Keywords

Complex refractive index
Franckeite
Optical contrast
Optical identification
Van der Waals heterostructure

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10.3762/bjnano.8.235

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Gant, Patricia ; Ghasemi, Foad ; Maeso, David ; Munuera, Carmen ; López-Elvira, Elena ; Frisenda, Riccardo ; De Lara, David Pérez ; Rubio-Bollinger, Gabino ; Garcia-Hernandez, Mar ; Castellanos-Gomez, Andres. / Optical contrast and refractive index of natural van der Waals heterostructure nanosheets of franckeite. In: Beilstein Journal of Nanotechnology. 2017 ; Vol. 8, No. 1. pp. 2357-2362.

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title = "Optical contrast and refractive index of natural van der Waals heterostructure nanosheets of franckeite",

abstract = "We study mechanically exfoliated nanosheets of franckeite by quantitative optical microscopy. The analysis of transmission-mode and epi-illumination-mode optical microscopy images provides a rapid method to estimate the thickness of the exfoliated flakes at first glance. A quantitative analysis of the optical contrast spectra by means of micro-reflectance allows one to determine the refractive index of franckeite over a broad range of the visible spectrum through a fit of the acquired spectra to a model based on the Fresnel law.",

keywords = "Complex refractive index, Franckeite, Optical contrast, Optical identification, Van der Waals heterostructure",

author = "Patricia Gant and Foad Ghasemi and David Maeso and Carmen Munuera and Elena L{\'o}pez-Elvira and Riccardo Frisenda and {De Lara}, {David P{\'e}rez} and Gabino Rubio-Bollinger and Mar Garcia-Hernandez and Andres Castellanos-Gomez",

note = "Publisher Copyright: {\textcopyright} 2017 Gant et al.",

year = "2017",

doi = "10.3762/bjnano.8.235",

language = "英语",

volume = "8",

pages = "2357--2362",

journal = "Beilstein Journal of Nanotechnology",

issn = "2190-4286",

publisher = "Beilstein-Institut Zur Forderung der Chemischen Wissenschaften",

number = "1",

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Optical contrast and refractive index of natural van der Waals heterostructure nanosheets of franckeite. / Gant, Patricia; Ghasemi, Foad; Maeso, David; Munuera, Carmen; López-Elvira, Elena; Frisenda, Riccardo; De Lara, David Pérez; Rubio-Bollinger, Gabino; Garcia-Hernandez, Mar; Castellanos-Gomez, Andres.

In: Beilstein Journal of Nanotechnology, Vol. 8, No. 1, 2017, p. 2357-2362.

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

TY - JOUR

T1 - Optical contrast and refractive index of natural van der Waals heterostructure nanosheets of franckeite

AU - Gant, Patricia

AU - Ghasemi, Foad

AU - Maeso, David

AU - Munuera, Carmen

AU - López-Elvira, Elena

AU - Frisenda, Riccardo

AU - De Lara, David Pérez

AU - Rubio-Bollinger, Gabino

AU - Garcia-Hernandez, Mar

AU - Castellanos-Gomez, Andres

PY - 2017

Y1 - 2017

N2 - We study mechanically exfoliated nanosheets of franckeite by quantitative optical microscopy. The analysis of transmission-mode and epi-illumination-mode optical microscopy images provides a rapid method to estimate the thickness of the exfoliated flakes at first glance. A quantitative analysis of the optical contrast spectra by means of micro-reflectance allows one to determine the refractive index of franckeite over a broad range of the visible spectrum through a fit of the acquired spectra to a model based on the Fresnel law.

AB - We study mechanically exfoliated nanosheets of franckeite by quantitative optical microscopy. The analysis of transmission-mode and epi-illumination-mode optical microscopy images provides a rapid method to estimate the thickness of the exfoliated flakes at first glance. A quantitative analysis of the optical contrast spectra by means of micro-reflectance allows one to determine the refractive index of franckeite over a broad range of the visible spectrum through a fit of the acquired spectra to a model based on the Fresnel law.

KW - Complex refractive index

KW - Franckeite

KW - Optical contrast

KW - Optical identification

KW - Van der Waals heterostructure

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U2 - 10.3762/bjnano.8.235

DO - 10.3762/bjnano.8.235

M3 - 文章

AN - SCOPUS:85034261670

VL - 8

SP - 2357

EP - 2362

JO - Beilstein Journal of Nanotechnology

JF - Beilstein Journal of Nanotechnology

SN - 2190-4286

IS - 1

ER -

Optical contrast and refractive index of natural van der Waals heterostructure nanosheets of franckeite

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Keywords

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