Sivakumar R. Challa

4.8k total citations · 2 hit papers
19 papers, 4.2k citations indexed

About

Sivakumar R. Challa is a scholar working on Materials Chemistry, Catalysis and Atmospheric Science. According to data from OpenAlex, Sivakumar R. Challa has authored 19 papers receiving a total of 4.2k indexed citations (citations by other indexed papers that have themselves been cited), including 12 papers in Materials Chemistry, 6 papers in Catalysis and 5 papers in Atmospheric Science. Recurrent topics in Sivakumar R. Challa's work include Catalytic Processes in Materials Science (7 papers), Electrocatalysts for Energy Conversion (5 papers) and nanoparticles nucleation surface interactions (5 papers). Sivakumar R. Challa is often cited by papers focused on Catalytic Processes in Materials Science (7 papers), Electrocatalysts for Energy Conversion (5 papers) and nanoparticles nucleation surface interactions (5 papers). Sivakumar R. Challa collaborates with scholars based in United States and Denmark. Sivakumar R. Challa's co-authors include Abhaya K. Datye, Andrew DeLaRiva, Thomas W. Hansen, Haifeng Xiong, Michelle H. Wiebenga, Gongshin Qi, Se H. Oh, Eric J. Peterson, Hien N. Pham and Xavier Isidro Pereira Hernández and has published in prestigious journals such as Science, Journal of the American Chemical Society and Physical Review Letters.

In The Last Decade

Sivakumar R. Challa

19 papers receiving 4.2k citations

Hit Papers

align trajectories sort by overperformance

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Thermally stable single-atom platinum-on-ceria catalysts via atom trapping

2016 1.7k citations Haifeng Xiong, Andrew DeLaRiva et al. Science profile →
Sintering of Catalytic Nanoparticles: Particle Migration or Ostwald Ripening?

2013 1.1k citations Thomas W. Hansen, Andrew DeLaRiva et al. Accounts of Chemical Research profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Sivakumar R. Challa United States	14	3.2k	1.6k	1.3k	784	600	19	4.2k
Mónica Calatayud France	41	3.4k 1.1×	1.1k 0.7×	1.6k 1.2×	413 0.5×	528 0.9×	127	4.4k
David Thompsett United Kingdom	38	2.9k 0.9×	1.7k 1.0×	1.3k 1.0×	593 0.8×	594 1.0×	122	4.2k
L. Piccolo France	36	2.7k 0.8×	1.2k 0.7×	1.4k 1.1×	542 0.7×	614 1.0×	99	3.4k
Pratibha L. Gai United Kingdom	38	2.9k 0.9×	938 0.6×	771 0.6×	616 0.8×	427 0.7×	156	4.9k
Xiaohu Yu China	35	2.1k 0.7×	1.5k 0.9×	757 0.6×	538 0.7×	382 0.6×	121	3.2k
Jesús Graciani Spain	31	4.0k 1.2×	1.9k 1.2×	2.2k 1.7×	564 0.7×	471 0.8×	42	4.7k
Sergey M. Kozlov Spain	38	3.4k 1.1×	1.6k 1.0×	1.5k 1.1×	464 0.6×	362 0.6×	78	4.4k
Nataliya Tsud Czechia	34	3.8k 1.2×	1.8k 1.1×	1.8k 1.3×	482 0.6×	475 0.8×	173	5.0k
Laurent Delannoy France	32	2.9k 0.9×	855 0.5×	1.4k 1.1×	1.0k 1.3×	921 1.5×	67	3.4k
Tomáš Škála Czechia	36	4.7k 1.5×	2.5k 1.5×	2.3k 1.8×	602 0.8×	590 1.0×	166	5.9k

Countries citing papers authored by Sivakumar R. Challa

Since Specialization

Citations

This map shows the geographic impact of Sivakumar R. Challa'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 Sivakumar R. Challa with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Sivakumar R. Challa more than expected).

Fields of papers citing papers by Sivakumar R. Challa

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Sivakumar R. Challa. 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 Sivakumar R. Challa. The network helps show where Sivakumar R. Challa may publish in the future.

Co-authorship network of co-authors of Sivakumar R. Challa

This figure shows the co-authorship network connecting the top 25 collaborators of Sivakumar R. Challa. A scholar is included among the top collaborators of Sivakumar R. Challa 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 Sivakumar R. Challa. Sivakumar R. Challa is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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19 of 19 papers shown

Xiong, Haifeng, Andrew DeLaRiva, Deepak Kunwar, et al.. (2017). Designing Catalysts for Meeting the DOE 150 °C Challenge for Exhaust Emissions. Microscopy and Microanalysis. 23(S1). 2028–2029. 4 indexed citations

DeLaRiva, Andrew, Haifeng Xiong, Eric J. Peterson, et al.. (2017). Regenerative trapping: How Pd improves the durability of Pt diesel oxidation catalysts. Applied Catalysis B: Environmental. 218. 581–590. 51 indexed citations

Xiong, Haifeng, Andrew DeLaRiva, Eric J. Peterson, et al.. (2016). Thermally stable single-atom platinum-on-ceria catalysts via atom trapping. Science. 353(6295). 150–154. 1737 indexed citations breakdown →

Swol, Frank van, Xiaowang Zhou, Sivakumar R. Challa, & James E. Martin. (2015). Thermodynamic properties of model CdTe/CdSe mixtures. Molecular Simulation. 42(1). 14–24. 3 indexed citations

Xiong, Haifeng, Andrew DeLaRiva, Sivakumar R. Challa, et al.. (2014). Trapping of Mobile Pt Species by PdO Nanoparticles under Oxidizing Conditions. The Journal of Physical Chemistry Letters. 5(12). 2089–2093. 83 indexed citations

Hansen, Thomas W., Andrew DeLaRiva, Sivakumar R. Challa, & Abhaya K. Datye. (2013). Sintering of Catalytic Nanoparticles: Particle Migration or Ostwald Ripening?. Accounts of Chemical Research. 46(8). 1720–1730. 1138 indexed citations breakdown →

DeLaRiva, Andrew, Thomas W. Hansen, Sivakumar R. Challa, & Abhaya K. Datye. (2013). In situ Transmission Electron Microscopy of catalyst sintering. Journal of Catalysis. 308. 291–305. 118 indexed citations

Swol, Frank van, Sivakumar R. Challa, & John A. Shelnutt. (2012). A thermodynamic perspective of the metastability of holey sheets: the role of curvature. Physical Chemistry Chemical Physics. 14(38). 13309–13309. 1 indexed citations

Challa, Sivakumar R., Andrew DeLaRiva, Thomas W. Hansen, et al.. (2011). Relating Rates of Catalyst Sintering to the Disappearance of Individual Nanoparticles during Ostwald Ripening. Journal of the American Chemical Society. 133(51). 20672–20675. 263 indexed citations

10.

Challa, Sivakumar R., Yujiang Song, John A. Shelnutt, James E. Miller, & Frank van Swol. (2011). Evolution of dendritic nanosheets into durable holey sheets: a lattice gas simulation study. Journal of Porphyrins and Phthalocyanines. 15(05n06). 449–458. 4 indexed citations

11.

Houk, Levi R., et al.. (2009). The Definition of “Critical Radius” for a Collection of Nanoparticles Undergoing Ostwald Ripening. Langmuir. 25(19). 11225–11227. 76 indexed citations

12.

Song, Yujiang, Michael A. Hickner, Sivakumar R. Challa, et al.. (2009). Evolution of Dendritic Platinum Nanosheets into Ripening-Resistant Holey Sheets. Nano Letters. 9(4). 1534–1539. 31 indexed citations

13.

Challa, Sivakumar R. & Frank van Swol. (2006). Molecular simulations of lubrication and solvation forces. Physical Review E. 73(1). 16306–16306. 13 indexed citations

14.

Song, Yujiang, Sivakumar R. Challa, Craig J. Medforth, et al.. (2004). Synthesis of peptide-nanotube platinum-nanoparticle composites. Chemical Communications. 1044–1045. 202 indexed citations

15.

Challa, Sivakumar R., David S. Sholl, & J. Karl Johnson. (2002). Adsorption and separation of hydrogen isotopes in carbon nanotubes: Multicomponent grand canonical Monte Carlo simulations. The Journal of Chemical Physics. 116(2). 814–824. 166 indexed citations

16.

Challa, Sivakumar R., David S. Sholl, & J. Karl Johnson. (2001). Light isotope separation in carbon nanotubes through quantum molecular sieving. Physical review. B, Condensed matter. 63(24). 92 indexed citations

17.

Challa, Sivakumar R. & J. Karl Johnson. (1999). Molar excess volumes of liquid hydrogen and neon mixtures from path integral simulation. The Journal of Chemical Physics. 111(2). 724–729. 8 indexed citations

18.

Wang, Qinyu, Sivakumar R. Challa, David S. Sholl, & J. Karl Johnson. (1999). Quantum Sieving in Carbon Nanotubes and Zeolites. Physical Review Letters. 82(5). 956–959. 215 indexed citations

19.

Challa, Sivakumar R., et al.. (1994). Measurement of the Dielectric Properties of Char at 2.45 GHZ. Journal of Microwave Power and Electromagnetic Energy. 29(3). 131–137. 17 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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