Oomman K. Varghese

29.1k total citations · 14 hit papers
119 papers, 24.1k citations indexed

About

Oomman K. Varghese is a scholar working on Materials Chemistry, Renewable Energy, Sustainability and the Environment and Electrical and Electronic Engineering. According to data from OpenAlex, Oomman K. Varghese has authored 119 papers receiving a total of 24.1k indexed citations (citations by other indexed papers that have themselves been cited), including 67 papers in Materials Chemistry, 54 papers in Renewable Energy, Sustainability and the Environment and 40 papers in Electrical and Electronic Engineering. Recurrent topics in Oomman K. Varghese's work include TiO2 Photocatalysis and Solar Cells (45 papers), Advanced Photocatalysis Techniques (40 papers) and Gas Sensing Nanomaterials and Sensors (25 papers). Oomman K. Varghese is often cited by papers focused on TiO2 Photocatalysis and Solar Cells (45 papers), Advanced Photocatalysis Techniques (40 papers) and Gas Sensing Nanomaterials and Sensors (25 papers). Oomman K. Varghese collaborates with scholars based in United States, China and Australia. Oomman K. Varghese's co-authors include Craig A. Grimes, Maggie Paulose, Gopal K. Mor, Karthik Shankar, Elizabeth C. Dickey, Dawei Gong, Thomas J. LaTempa, Keat Ghee Ong, Haripriya E. Prakasam and Somnath C. Roy and has published in prestigious journals such as Advanced Materials, Nano Letters and ACS Nano.

In The Last Decade

Oomman K. Varghese

118 papers receiving 23.5k citations

Hit Papers

Use of Highly-Ordered TiO... 2001 2026 2009 2017 2005 2001 2006 2010 2008 500 1000 1.5k
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.

  1. Use of Highly-Ordered TiO2 Nanotube Arrays in Dye-Sensitized Solar Cells
    2005 2.0k citations Gopal K. Mor, Karthik Shankar et al. Nano Letters profile →
  2. Titanium oxide nanotube arrays prepared by anodic oxidation
    2001 1.7k citations Dawei Gong, Craig A. Grimes et al. Journal of materials research/Pratt's guide to venture capital sources profile →
  3. A review on highly ordered, vertically oriented TiO2 nanotube arrays: Fabrication, material properties, and solar energy applications
    2006 1.7k citations Gopal K. Mor, Oomman K. Varghese et al. Solar Energy Materials and Solar Cells profile →
  4. Toward Solar Fuels: Photocatalytic Conversion of Carbon Dioxide to Hydrocarbons
    2010 1.3k citations Somnath C. Roy, Oomman K. Varghese et al. profile →
  5. Vertically Aligned Single Crystal TiO2 Nanowire Arrays Grown Directly on Transparent Conducting Oxide Coated Glass: Synthesis Details and Applications
    2008 1.0k citations Xinjian Feng, Karthik Shankar et al. Nano Letters profile →
  6. Enhanced Photocleavage of Water Using Titania Nanotube Arrays
    2004 995 citations Gopal K. Mor, Karthik Shankar et al. Nano Letters profile →
  7. High-Rate Solar Photocatalytic Conversion of CO2 and Water Vapor to Hydrocarbon Fuels
    2009 886 citations Oomman K. Varghese, Maggie Paulose et al. Nano Letters profile →
  8. Recent Advances in the Use of TiO2 Nanotube and Nanowire Arrays for Oxidative Photoelectrochemistry
    2009 722 citations Karthik Shankar, Oomman K. Varghese et al. profile →
  9. Long vertically aligned titania nanotubes on transparent conducting oxide for highly efficient solar cells
    2009 668 citations Oomman K. Varghese, Maggie Paulose et al. profile →
  10. Hydrogen sensing using titania nanotubes
    2003 655 citations Oomman K. Varghese, Dawei Gong et al. profile →
  11. Highly-ordered TiO2nanotube arrays up to 220 µm in length: use in water photoelectrolysis and dye-sensitized solar cells
    2007 624 citations Karthik Shankar, Gopal K. Mor et al. profile →
  12. Extreme Changes in the Electrical Resistance of Titania Nanotubes with Hydrogen Exposure
    2003 604 citations Oomman K. Varghese, Maggie Paulose et al. profile →
  13. Crystallization and high-temperature structural stability of titanium oxide nanotube arrays
    2003 598 citations Oomman K. Varghese, Dawei Gong et al. Journal of materials research/Pratt's guide to venture capital sources profile →
  14. A New Benchmark for TiO2 Nanotube Array Growth by Anodization
    2007 512 citations Karthik Shankar, Maggie Paulose et al. profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Oomman K. Varghese United States 65 16.2k 14.9k 7.1k 3.6k 3.5k 119 24.1k
Maggie Paulose United States 57 14.3k 0.9× 12.8k 0.9× 5.8k 0.8× 3.0k 0.8× 2.7k 0.8× 106 20.9k
Jan M. Macák Czechia 65 11.2k 0.7× 11.5k 0.8× 4.8k 0.7× 2.5k 0.7× 3.5k 1.0× 240 18.3k
Gopal K. Mor United States 47 10.0k 0.6× 8.5k 0.6× 3.8k 0.5× 2.3k 0.7× 1.7k 0.5× 70 14.1k
Xiaowei Li China 59 5.4k 0.3× 6.6k 0.4× 8.1k 1.1× 1.5k 0.4× 2.6k 0.8× 318 13.5k
Lian Gao China 81 5.0k 0.3× 12.5k 0.8× 8.3k 1.2× 3.5k 1.0× 4.2k 1.2× 382 20.8k
Jin Hyeok Kim South Korea 71 4.3k 0.3× 11.9k 0.8× 14.6k 2.1× 2.5k 0.7× 1.9k 0.6× 552 19.0k
Yujin Chen China 94 5.6k 0.3× 9.8k 0.7× 12.6k 1.8× 2.7k 0.8× 3.9k 1.1× 357 24.7k
Torben Daeneke Australia 62 3.9k 0.2× 8.5k 0.6× 6.3k 0.9× 2.0k 0.5× 3.9k 1.1× 168 14.3k
Huiqing Fan China 80 5.2k 0.3× 17.0k 1.1× 14.8k 2.1× 2.2k 0.6× 7.6k 2.2× 702 25.2k
Hua Gui Yang China 89 20.9k 1.3× 19.1k 1.3× 13.9k 2.0× 3.2k 0.9× 1.4k 0.4× 422 31.1k

Countries citing papers authored by Oomman K. Varghese

Since Specialization
Citations

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

Fields of papers citing papers by Oomman K. Varghese

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Oomman K. Varghese. 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 Oomman K. Varghese. The network helps show where Oomman K. Varghese may publish in the future.

Co-authorship network of co-authors of Oomman K. Varghese

This figure shows the co-authorship network connecting the top 25 collaborators of Oomman K. Varghese. A scholar is included among the top collaborators of Oomman K. Varghese 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 Oomman K. Varghese. Oomman K. Varghese 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.
Qiu, Chenyue, Mengsha Li, Maggie Paulose, et al.. (2025). Revealing the high-temperature stability and phase transformation in isolated TiO2 nanotubes using in situ heating TEM. Materials Today Nano. 31. 100654–100654.
2.
Varghese, Oomman K., et al.. (2024). (Invited) Development of Transparent Nanostructured Oxide Semiconductors for Electronic and Optoelectronic Devices. ECS Meeting Abstracts. MA2024-02(35). 2432–2432. 1 indexed citations
3.
Zafar, Muhammad Adeel, Yang Liu, Francisco C. Robles Hernández, Oomman K. Varghese, & Mohan V. Jacob. (2023). Plasma‐Based Synthesis of Freestanding Graphene from a Natural Resource for Sensing Application. Advanced Materials Interfaces. 10(11). 11 indexed citations
4.
Ivaturi, Aruna & Oomman K. Varghese. (2023). Introduction to “Shaping the future using thin films and nanotechnology”. Materials Advances. 4(12). 2522–2523. 3 indexed citations
5.
Alancherry, Surjith, Mohan V. Jacob, Karthika Prasad, et al.. (2019). Tuning and fine morphology control of natural resource-derived vertical graphene. Carbon. 159. 668–685. 24 indexed citations
6.
Radhakrishnan, Sruthi, Jun Hyoung Park, Ram P. Neupane, et al.. (2018). Fluorinated Boron Nitride Quantum Dots: A New 0D Material for Energy Conversion and Detection of Cellular Metabolism. Particle & Particle Systems Characterization. 36(2). 17 indexed citations
7.
Paulose, Maggie, et al.. (2016). Rapid Growth of Zinc Oxide Nanotube–Nanowire Hybrid Architectures and Their Use in Breast Cancer-Related Volatile Organics Detection. Nano Letters. 16(5). 3014–3021. 90 indexed citations
8.
Rao, B. Manmadha, et al.. (2016). Anodically grown functional oxide nanotubes and applications. MRS Communications. 6(4). 375–396. 34 indexed citations
9.
Qin, Dongdong, et al.. (2011). Dense layers of vertically oriented WO3crystals as anodes for photoelectrochemical water oxidation. Chemical Communications. 48(5). 729–731. 104 indexed citations
10.
Rani, Sanju, Somnath C. Roy, Maggie Paulose, et al.. (2010). Synthesis and applications of electrochemically self-assembled titania nanotube arrays. Physical Chemistry Chemical Physics. 12(12). 2780–2780. 229 indexed citations
11.
Mor, Gopal K., et al.. (2009). Broad Spectrum Light Harvesting in TiO$_2$ Nanotube Array – Hemicyanine Dye – P3HT Hybrid Solid-State Solar Cells. IEEE Journal of Selected Topics in Quantum Electronics. 16(6). 1573–1580. 14 indexed citations
12.
Feng, Xinjian, Karthik Shankar, Oomman K. Varghese, et al.. (2008). Vertically Aligned Single Crystal TiO2 Nanowire Arrays Grown Directly on Transparent Conducting Oxide Coated Glass: Synthesis Details and Applications. Nano Letters. 8(11). 3781–3786. 1044 indexed citations breakdown →
13.
Seabold, Jason A., Karthik Shankar, Rudeger H. T. Wilke, et al.. (2008). Photoelectrochemical Properties of Heterojunction CdTe/TiO2 Electrodes Constructed Using Highly Ordered TiO2 Nanotube Arrays. Chemistry of Materials. 20(16). 5266–5273. 199 indexed citations
14.
Shankar, Karthik, Jayasundera Bandara, Maggie Paulose, et al.. (2008). Highly Efficient Solar Cells using TiO2 Nanotube Arrays Sensitized with a Donor-Antenna Dye. Nano Letters. 8(6). 1654–1659. 241 indexed citations
15.
Mor, Gopal K., Oomman K. Varghese, Maggie Paulose, Karthik Shankar, & Craig A. Grimes. (2006). A review on highly ordered, vertically oriented TiO2 nanotube arrays: Fabrication, material properties, and solar energy applications. Solar Energy Materials and Solar Cells. 90(14). 2011–2075. 1711 indexed citations breakdown →
16.
Ruan, Chuanmin, Kaiyang Zeng, Oomman K. Varghese, & Craig A. Grimes. (2004). A staphylococcal enterotoxin B magnetoelastic immunosensor. Biosensors and Bioelectronics. 20(3). 585–591. 73 indexed citations
17.
Paulose, Maggie, Oomman K. Varghese, & Craig A. Grimes. (2003). Synthesis of Gold-Silica Composite Nanowires through Solid-Liquid-Solid Phase Growth. Journal of Nanoscience and Nanotechnology. 3(4). 341–346. 76 indexed citations
18.
Mor, Gopal K., Oomman K. Varghese, Maggie Paulose, & Craig A. Grimes. (2003). A Self-Cleaning, Room-Temperature Titania-Nanotube Hydrogen Gas Sensor. Sensor Letters. 1(1). 42–46. 128 indexed citations
19.
Paulose, Maggie, Craig A. Grimes, Oomman K. Varghese, & Elizabeth C. Dickey. (2002). Self-assembled fabrication of aluminum–silicon nanowire networks. Applied Physics Letters. 81(1). 153–155. 36 indexed citations
20.
Gong, Dawei, Craig A. Grimes, Oomman K. Varghese, et al.. (2001). Titanium oxide nanotube arrays prepared by anodic oxidation. Journal of materials research/Pratt's guide to venture capital sources. 16(12). 3331–3334. 1717 indexed citations breakdown →

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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