Roland Hellmann

3.3k total citations
45 papers, 2.7k citations indexed

About

Roland Hellmann is a scholar working on Environmental Engineering, Geophysics and Biomaterials. According to data from OpenAlex, Roland Hellmann has authored 45 papers receiving a total of 2.7k indexed citations (citations by other indexed papers that have themselves been cited), including 22 papers in Environmental Engineering, 15 papers in Geophysics and 14 papers in Biomaterials. Recurrent topics in Roland Hellmann's work include CO2 Sequestration and Geologic Interactions (20 papers), Geological and Geochemical Analysis (12 papers) and Clay minerals and soil interactions (11 papers). Roland Hellmann is often cited by papers focused on CO2 Sequestration and Geologic Interactions (20 papers), Geological and Geochemical Analysis (12 papers) and Clay minerals and soil interactions (11 papers). Roland Hellmann collaborates with scholars based in France, United States and Germany. Roland Hellmann's co-authors include Delphine Tisserand, Damien Daval, David A. Crerar, François Guyot, J. M. Pénisson, R. L. Hervig, Isabelle Martínez, Giuseppe D. Saldi, Kevin G. Knauss and Robert F. Stallard and has published in prestigious journals such as The Journal of Chemical Physics, Nature Materials and Journal of Geophysical Research Atmospheres.

In The Last Decade

Roland Hellmann

45 papers receiving 2.6k citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Roland Hellmann France 22 1.5k 713 574 511 394 45 2.7k
Damien Daval France 30 1.7k 1.2× 668 0.9× 395 0.7× 482 0.9× 394 1.0× 74 2.7k
Rolf S. Arvidson United States 27 1.2k 0.8× 488 0.7× 997 1.7× 823 1.6× 563 1.4× 49 4.0k
Jiwchar Ganor Israel 32 1.3k 0.9× 471 0.7× 761 1.3× 735 1.4× 347 0.9× 65 3.1k
Bertrand Fritz France 34 922 0.6× 566 0.8× 596 1.0× 398 0.8× 335 0.9× 120 3.1k
Giuseppe D. Saldi France 23 1.2k 0.8× 547 0.8× 382 0.7× 469 0.9× 310 0.8× 48 2.1k
Pascale Bénézeth France 35 1.2k 0.8× 462 0.6× 763 1.3× 704 1.4× 333 0.8× 93 3.5k
Gilles Berger France 32 681 0.5× 924 1.3× 827 1.4× 522 1.0× 647 1.6× 77 4.1k
John V. Walther United States 31 1.2k 0.9× 1.7k 2.4× 967 1.7× 628 1.2× 471 1.2× 55 4.2k
Mohamed Azaroual France 26 1.6k 1.1× 355 0.5× 256 0.4× 531 1.0× 504 1.3× 69 3.0k
Éric C. Gaucher France 39 1.6k 1.1× 617 0.9× 662 1.2× 652 1.3× 845 2.1× 127 4.5k

Countries citing papers authored by Roland Hellmann

Since Specialization
Citations

This map shows the geographic impact of Roland Hellmann's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Roland Hellmann with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Roland Hellmann more than expected).

Fields of papers citing papers by Roland Hellmann

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Roland Hellmann. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Roland Hellmann. The network helps show where Roland Hellmann may publish in the future.

Co-authorship network of co-authors of Roland Hellmann

This figure shows the co-authorship network connecting the top 25 collaborators of Roland Hellmann. A scholar is included among the top collaborators of Roland Hellmann based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Roland Hellmann. Roland Hellmann is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Hellmann, Roland, G. Montes‐Hernandez, Nathaniel Findling, et al.. (2023). Deciphering strontium sulfate precipitation via Ostwald’s rule of stages: From prenucleation clusters to solution-mediated phase tranformation. The Journal of Chemical Physics. 158(5). 54501–54501. 12 indexed citations
2.
Hellmann, Roland, Yuanyuan Zhai, Éric Robin, et al.. (2021). The hydrothermal alkaline alteration of potassium feldspar: A nanometer-scale investigation of the orthoclase interface. Chemical Geology. 569. 120133–120133. 16 indexed citations
3.
Zhai, Yuanyuan, Roland Hellmann, Andréa Campos, et al.. (2020). Fertilizer derived from alkaline hydrothermal alteration of K-feldspar: A micrometer to nanometer-scale investigation of K in secondary reaction products and the feldspar interface. Applied Geochemistry. 126. 104828–104828. 10 indexed citations
4.
Leonard, Donovan N. & Roland Hellmann. (2016). Exploring dynamic surface processes during silicate mineral (wollastonite) dissolution with liquid cell TEM. Journal of Microscopy. 265(3). 358–371. 4 indexed citations
5.
Hellmann, Roland, Stéphane Cotte, E. Cadel, et al.. (2015). Nanometre-scale evidence for interfacial dissolution–reprecipitation control of silicate glass corrosion. Nature Materials. 14(3). 307–311. 232 indexed citations
6.
Hellmann, Roland, Damien Daval, & Richard Wirth. (2013). Formation of Amorphous Silica Surface Layers by Dissolution-Reprecipitaton During Chemical Weathering: Implications for CO2 Uptake. Procedia Earth and Planetary Science. 7. 346–349. 14 indexed citations
7.
Tisserand, Delphine, Éric Pili, Roland Hellmann, Anne‐Marie Boullier, & Laurent Charlet. (2013). Geogenic arsenic in groundwaters in the western Alps. Journal of Hydrology. 518. 317–325. 20 indexed citations
8.
Hellmann, Roland, Damien Daval, Jean‐Paul Barnes, et al.. (2011). Unifying natural and laboratory chemical weathering with interfacial dissolution–reprecipitation: A study based on the nanometer-scale chemistry of fluid–silicate interfaces. Chemical Geology. 294-295. 203–216. 264 indexed citations
9.
Hellmann, Roland, et al.. (2009). Dissolution kinetics of diopside as a function of the Gibbs free energy of reaction. HAL (Le Centre pour la Communication Scientifique Directe). 73. 1 indexed citations
10.
Hellmann, Roland, Damien Daval, & Delphine Tisserand. (2009). The dependence of albite feldspar dissolution kinetics on fluid saturation state at acid and basic pH: Progress towards a universal relation. Comptes Rendus Géoscience. 342(7-8). 676–684. 44 indexed citations
11.
Hellmann, Roland, Damien Daval, Delphine Tisserand, I. Martinez, & François Guyot. (2008). Investigating the dissolution behavior of serpentine. HAL (Le Centre pour la Communication Scientifique Directe). 72(12). 2 indexed citations
12.
Renard, François, et al.. (2005). Numerical modeling of carbon dioxide sequestration on the rate of pressure solution creep in limestone: Preliminary results. Oil & Gas Science and Technology – Revue d’IFP Energies nouvelles. 60. 381–399. 8 indexed citations
13.
Hellmann, Roland & Delphine Tisserand. (2005). Feldspar dissolution rates and the Gibbs free energy of reaction. Geochimica et Cosmochimica Acta Supplement. 69(10). 2 indexed citations
14.
Hellmann, Roland, J.-C. Dran, & G. Della Mea. (1997). The albite-water system: Part III. Characterization of leached and hydrogen-enriched layers formed at 300°C using MeV ion beam techniques. Geochimica et Cosmochimica Acta. 61(8). 1575–1594. 54 indexed citations
15.
Hellmann, Roland. (1995). The albite-water system: Part II. The time-evolution of the stoichiometry of dissolution as a function of pH at 100, 200, and 300°C. Geochimica et Cosmochimica Acta. 59(9). 1669–1697. 96 indexed citations
16.
Drake, B., Roland Hellmann, C. Steven Sikes, & Mario L. Occelli. (1992). <title>Atomic-scale imaging of albite feldspar, calcium carbonate, rectorite, and bentonite using atomic-force microscopy</title>. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 1639. 151–159. 4 indexed citations
17.
Drake, B. & Roland Hellmann. (1991). Atomic force microscopy imaging of the albite (010) surface. American Mineralogist. 76. 1773–1776. 18 indexed citations
18.
Zhang, Ronghua, et al.. (1990). KINETICS STUDIES OF MINERAL-WATER REACTIONS IN HYDROTHERMAL FLOW SYSTEMS AT ELEVATED TEMPERATURES AND PRESSURES. Science China Chemistry. 33(9). 1136–1152. 10 indexed citations
19.
Hellmann, Roland, et al.. (1989). Albite feldspar hydrolysis to 300°C. Solid State Ionics. 32-33. 314–329. 25 indexed citations
20.
Crerar, David A., et al.. (1986). Kinetics of mineral-water reactions; theory, design and application of circulating hydrothermal equipment. American Mineralogist. 71. 85–94. 20 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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