The impact of Jürgen Habermas's scientific production: a scientometric review.

The use of bibliometrics, based on statistical and mathematical tools, makes it possible to measure the contributions of researchers to science. This is a widely used tool to assess scientific production in several areas of knowledge. Such methodology analyzes publication trends, author networks, structures of co-citation, journals and even the scientific contribution of renowned scholars in science. The precursor of bibliometrics, Eugene Garfield, who proposes the retrieval of information from the indexing of citations, was the object of a scientometric review aimed at assessing his impact on science. Given such relevance, this article presents the academic contribution of Jürgen Habermas based on a preliminary scientometric review of his studies. Jürgen Habermas is regarded not only as an active scholar in the social and political process, but also as a productive, controversial and influential contemporary author. The correct understanding of his works is a great challenge, as the bases of his thinking are so broad that they allow an interface between different approaches. We elaborated a design of his scientific work with the advancement to a connection between his main ideas through the use of bibliometric software. Bibliometrics, of the scientometric type, allows the understanding of how recognized patterns in citations can develop information relevant to the scientific field. The results confirm the multidisciplinary contribution of Habermas's studies and highlight his main fields of research and works, which serve as a foundation for clearly understanding and applying his concepts.

Low-energy-loss EFTEM imaging of thick particles and aggregates.

Electron spectroscopy imaging is a powerful tool for the elucidation of colloidal particle morphology and microchemistry, but it normally requires the use of very thin samples, typically less than 50 nm, to avoid the effects of multiple scattering. This work shows that many aspects of the internal morphology of thick particles and aggregates and the chemical component distribution are revealed using low-energy-loss electron imaging in the transmission electron microscope, benefiting from multiple scattering as well as small but significant differences in the low-energy-loss spectra of aggregate constituents. Low-loss images reveal morphological details of thick aggregates made out of colloidal polymers (natural rubber and styrene-acrylic latex) and inorganic particles (silica, montmorillonite, and aluminum phosphate) at a spatial resolution close to that achieved in the bright-field images and much better than in the elemental maps, showing the advantages of the simultaneous use of low-loss images and standard thin-cut elemental maps.