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Grant support

This work was funded by the Spanish Ministry Ministerio de Economia y Competitividad under the project PLATON (Ref.: TEC2012-31145). The authors acknowledge Dr. M. Holgado for providing the FT-VIS-IR Bruker spectrometer used in this work to measure the spectral reflectance.

Analysis of institutional authors

Angulo Barrios, CarlosAuthorCanalejas-Tejero, VictorAuthor

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A top-down approach for fabricating three-dimensional closed hollow nanostructures with permeable thin metal walls

Publicated to:Beilstein Journal Of Nanotechnology. 8 (1): 1231-1237 - 2017-06-08 8(1), DOI: 10.3762/bjnano.8.124

Authors: Barrios, CA; Canalejas-Tejero, V

Affiliations

Grupo de Dispositivos Semiconductores del ISOM. Universidad Politécnica de Madrid - Author
Univ Politecn Madrid, Dept Photon & Bioengn TFB, ETSI Telecomunicac, Ciudad Univ S-N, E-28040 Madrid, Spain - Author
Univ Politecn Madrid, ISOM, ETSI Telecomunicac, Ciudad Univ S-N, E-28040 Madrid, Spain - Author

Abstract

We report on a top-down method for the controlled fabrication of three-dimensional (3D), closed, thin-shelled, hollow nanostructures (nanocages) on planar supports. The presented approach is based on conventional microelectronic fabrication processes and exploits the permeability of thin metal films to hollow-out polymer-filled metal nanocages through an oxygen-plasma process. The technique is used for fabricating arrays of cylindrical nanocages made of thin Al shells on silicon substrates. This hollow metal configuration features optical resonance as revealed by spectral reflectance measurements and numerical simulations. The fabricated nanocages were demonstrated as a refractometric sensor with a measured bulk sensitivity of 327 nm/refractive index unit (RIU). The pattern design flexibility and controllability offered by top-down nanofabrication techniques opens the door to the possibility of massive integration of these hollow 3D nano-objects on a chip for applications such as nanocontainers, nanoreactors, nanofluidics, nano-biosensors and photonic devices.

Keywords

nanocagesnanocontainersnanofabricationnanophotonicsnanoreactorsoptical devicesplasmonicsLithographyNanocagesNanocontainersNanofabricationNanophotonicsNanoreactorsOptical devicesPlasmonicsTop-down techniques

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Beilstein Journal Of Nanotechnology 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, 2017, it was in position 36/146, thus managing to position itself as a Q1 (Primer Cuartil), in the category Physics, Applied.

Independientemente del impacto esperado determinado por el canal de difusión, es importante destacar el impacto real observado de la propia aportación.

Según las diferentes agencias de indexación, el número de citas acumuladas por esta publicación hasta la fecha 2025-06-09:

  • WoS: 1
  • Scopus: 2
  • Europe PMC: 1
  • OpenCitations: 2

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 2025-06-09:

  • 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: 9.
  • 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: 9 (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: 0.5.
  • 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.
  • Additionally, the work has been submitted to a journal classified as Diamond in relation to this type of editorial policy.

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: First Author (ANGULO BARRIOS, CARLOS) and Last Author (CANALEJAS TEJERO, VICTOR).