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Tip Charge Dependence of Three-Dimensional AFM Mapping of Concentrated Ionic Solutions

Publicated to:PHYSICAL REVIEW LETTERS. 127 (19): - 2021-11-05 127(19), DOI: 10.1103/PhysRevLett.127.196101

Authors: Benaglia S; Uhlig MR; Hernández-Muñoz J; Chacón E; Tarazona P; Garcia R

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Abstract

A molecular scale understanding of the organization and structure of a liquid near a solid surface is currently a major challenge in surface science. It has implications across different fields from electrochemistry and energy storage to molecular biology. Three-dimensional AFM generates atomically resolved maps of solid-liquid interfaces. The imaging mechanism behind those maps is under debate, in particular, for concentrated ionic solutions. Theory predicts that the observed contrast should depend on the tip's charged state. Here, by using neutrally, negatively, and positively charged tips, we demonstrate that the 3D maps depend on the tip's polarization. A neutral tip will explore the total particle density distribution (water and ions) while a charged tip will reveal the charge density distribution. The experimental data reproduce the key findings of the theory.

Keywords

Astronomia / físicaBiotecnologíaCiência da computaçãoCiências agrárias iCiências biológicas iiEconomiaEngenharias iiEngenharias iiiEngenharias ivEnsinoFarmaciaFilosofíaGeneral medicineGeneral physics and astronomyGeociênciasInterdisciplinarMatemática / probabilidade e estatísticaMateriaisMedicina iiPhysicsPhysics and astronomy (all)Physics and astronomy (miscellaneous)Physics, multidisciplinaryQuímica

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal PHYSICAL REVIEW LETTERS 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, 2021, it was in position , thus managing to position itself as a Q1 (Primer Cuartil), in the category . Notably, the journal is positioned above the 90th percentile.

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 2025-06-08:

  • Scopus: 30
  • OpenCitations: 23

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 2025-06-08:

  • 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: 48.
  • 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: 48 (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: 21.4.
  • The number of mentions on the social network X (formerly Twitter): 16 (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.
Continuing with the social impact of the work, it is important to emphasize that, due to its content, it can be assigned to the area of interest of ODS 7 - Ensure access to affordable, reliable, sustainable and modern energy for all, with a probability of 76% according to the mBERT algorithm developed by Aurora University.