Ahmad Umar
Ahmad Umar publishes mostly in Materials Chemistry, Electrical and Electronic Engineering and Renewable Energy, Sustainability and the Environment, on topics such as Gas Sensing Nanomaterials and Sensors, ZnO doping and properties and Advanced Photocatalysis Techniques.
- World rank
- #138,548 of 7,710,434 ranked researchers
- Rank in Saudi Arabia
- #504 of 25,688
- Works
- 957
- Citations
- 38k
- Citations per work
- 39.5
What does Ahmad Umar research?
Ahmad Umar's work is mostly in Materials Science (28%), Engineering (26%), Energy (8%).
Their six largest subfields, inside their fields and domains; the grey slice is everything else they publish. The interactive view splits every one of their works down to single topics.
The fields and subfields, with their numbers
- Physical Sciences62465.2%
- Materials Science26327.5%
- Engineering24725.8%
- Energy747.7%
- Chemical Engineering404.2%
- Everything else33334.8%
- 1Materials Chemistry22% of their works
- 2Electrical and Electronic Engineering20% of their works
- 3Renewable Energy, Sustainability and the Environment8% of their works
- 4Biomedical Engineering6% of their works
- 5Electronic, Optical and Magnetic Materials5% of their works
- 6Bioengineering4% of their works
Research topics
Which keywords describe Ahmad Umar's research?
The keywords of their largest research topics: Nanomaterials, Nanostructures, Semiconductors, Graphene, Photodetectors, Gas Sensors, Metal Oxide and Semiconductor.
- Gallium Oxide
- Carbon-Based Materials
- Detection
- Ion-Selective Electrodes
- Photocatalyst
- Electrochemical Biosensors
- Field-Effect Transistors
- Semiconductor
- Gas Sensors
- Graphene
- Nanostructures
- Nanomaterials
- Semiconductors
- Photodetectors
- Metal Oxide
- Ferromagnetism
- Zinc Oxide
- Glucose Sensors
- Visible Light
- Optical Sensors
- Electrochemical
- Electrochemical Capacitors
- Ultrawide Bandgap
Size is their works in the topics tagged with each word, from their 8 largest topics. Each links to the topic it comes from most.
All 23 words, with their numbers
- Nanomaterials5044 topics
- Nanostructures3862 topics
- Semiconductors3862 topics
- Graphene2863 topics
- Photodetectors2242 topics
- Gas Sensors2181 topic
- Metal Oxide2181 topic
- Semiconductor1712 topics
- Ferromagnetism1681 topic
- Field-Effect Transistors1682 topics
- Zinc Oxide1681 topic
- Electrochemical Biosensors1151 topic
- Glucose Sensors1151 topic
- Photocatalyst1151 topic
- Visible Light1151 topic
- Ion-Selective Electrodes1121 topic
- Optical Sensors1121 topic
- Detection581 topic
- Electrochemical581 topic
- Carbon-Based Materials561 topic
- Electrochemical Capacitors561 topic
- Gallium Oxide561 topic
- Ultrawide Bandgap561 topic
Where does Ahmad Umar work?
Ahmad Umar's main affiliation in the publication record is Najran University, Saudi Arabia.
How many publications and citations does Ahmad Umar have?
OpenAlex counts 957 works and 37,849 citations for Ahmad Umar, an h-index of 98, ranking #138,548 of 7,710,434 researchers worldwide on the quality score.
Ranked on field-normalised excellence (50%), output (30%) and citations (20%). Counts come from OpenAlex author records, which occasionally merge different people who share a name or split one person into several.
Papers, co-authors, who cited this work and researchers on the nearest topics have tabs of their own, above. Is this your page? Claim it with your ORCID iD, or request a correction or removal.
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