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Grant support

This project has received funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (grant agreement no 755655, ERC-StG 2017 project 2D-TOPSENSE), the European Commission, under the Graphene Flagship (Core 3, grant number 881603), the Spanish Ministry of Economy, Industry and Competitiveness through the grant MAT2017-87134-C2-2-R and partially funded by the Spanish Ministerio de Ciencia e Innovacion through grant RTI2018-096498-B-I00 (MCIU/AEI/FEDER, UE). SP acknowledges the fellowship PRE2018-084818.

Analysis of institutional authors

Mariscal-Jimenez, AntonioAuthorCastellanos-Gomez, AndresCorresponding Author

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October 20, 2020
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Optical-Based Thickness Measurement of MoO(3)Nanosheets

Publicated to:Nanomaterials. 10 (7): E1272- - 2020-07-01 10(7), DOI: 10.3390/nano10071272

Authors: Puebla, Sergio; Mariscal-Jimenez, Antonio; Serna Galan, Rosalia; Munuera, Carmen; Castellanos-Gomez, Andres;

Affiliations

Inst Ciencia Mat Madrid ICMM CSIC, E-28049 Madrid, Spain - Author
Inst Opt, CSIC, Laser Proc Grp, IO, Serrano 121, Madrid 28006, Spain - Author

Abstract

Considering that two-dimensional (2D) molybdenum trioxide has acquired more attention in the last few years, it is relevant to speed up thickness identification of this material. We provide two fast and non-destructive methods to evaluate the thickness of MoO(3)flakes on SiO2/Si substrates. First, by means of quantitative analysis of the apparent color of the flakes in optical microscopy images, one can make a first approximation of the thickness with an uncertainty of +/- 3 nm. The second method is based on the fit of optical contrast spectra, acquired with micro-reflectance measurements, to a Fresnel law-based model that provides an accurate measurement of the flake thickness with +/- 2 nm of uncertainty.

Keywords

2d materialscomplex oxidesmoo3optical microscopy2d materialsBlack-phosphorusComplex oxidesHigh-qualityIdentificationLayerMolybdenum trioxideMoo3Optical microscopyOxidationOxideRefractive-indexThickness determinationThin-film

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Nanomaterials due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2020, it was in position 35/160, thus managing to position itself as a Q1 (Primer Cuartil), in the category Physics, Applied.

From a relative perspective, and based on the normalized impact indicator calculated from the Field Citation Ratio (FCR) of the Dimensions source, it yields a value of: 2.17, which indicates that, compared to works in the same discipline and in the same year of publication, it ranks as a work cited above average. (source consulted: Dimensions Jul 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2025-07-20, the following number of citations:

  • WoS: 10

Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-07-20:

  • The use, from an academic perspective evidenced by the Altmetric agency indicator referring to aggregations made by the personal bibliographic manager Mendeley, gives us a total of: 46.
  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 46 (PlumX).

With a more dissemination-oriented intent and targeting more general audiences, we can observe other more global scores such as:

  • The Total Score from Altmetric: 0.25.
  • The number of mentions on the social network X (formerly Twitter): 1 (Altmetric).

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • The work has been submitted to a journal whose editorial policy allows open Open Access publication.

Leadership analysis of institutional authors

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: Last Author (CASTELLANOS GOMEZ, ANDRES).

the author responsible for correspondence tasks has been CASTELLANOS GOMEZ, ANDRES.