Johnston, Roy L.
University of Birmingham,
United Kingdom
2025 Rank: 85590
Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:
Physics & Astronomy
SubField 1:
Chemical Physics
SubField 2:
Nanoscience & Nanotechnology
Rank in SubField 1: 1026 out of 115551 Researchers
Data For The Year: 2025
| Metrics | Self-Citations Excluded | All |
|---|---|---|
| Rank Based on Composite Score | 85590 | 92582 |
| Total Cites | 496 | 528 |
| H-index | 9 | 9 |
| Hm-index | 4 | 5 |
| Number of Single Authored Papers | 4 | 4 |
| Total Cites to Single Authored Papers | 30 | 30 |
| Number of Single+First Authored Papers | 20 | 20 |
| Total Cites to Single+First Authored Papers | 48 | 48 |
| Number of Single+First+Last Authored Papers | 152 | 152 |
| Total Cites to Single+First+Last Authored Papers | 387 | 395 |
| Composite Score | 2 | 2 |
| Number of Distinct Citing Papers | 410 | 426 |
| Ratio of Total Citations to Distinct Citing Papers | 1.21 | 1.24 |
| Self-Citation Percentage |
6.06%
|
|
Johnston, Roy L.
University of Birmingham,
United Kingdom
2024 Rank: 59436
Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:
Physics & Astronomy
SubField 1:
Chemical Physics
SubField 2:
Nanoscience & Nanotechnology
Rank in SubField 1: 795 out of 106831 Researchers
Data For The Year: 2024
| Metrics | Self-Citations Excluded | All |
|---|---|---|
| Rank Based on Composite Score | 59436 | 66880 |
| Total Cites | 613 | 651 |
| H-index | 9 | 9 |
| Hm-index | 5 | 6 |
| Number of Single Authored Papers | 4 | 4 |
| Total Cites to Single Authored Papers | 28 | 28 |
| Number of Single+First Authored Papers | 20 | 20 |
| Total Cites to Single+First Authored Papers | 56 | 56 |
| Number of Single+First+Last Authored Papers | 152 | 152 |
| Total Cites to Single+First+Last Authored Papers | 502 | 524 |
| Composite Score | 2 | 2 |
| Number of Distinct Citing Papers | 458 | 476 |
| Ratio of Total Citations to Distinct Citing Papers | 1.34 | 1.37 |
| Self-Citation Percentage |
5.84%
|
|
Johnston, Roy L.
University of Birmingham,
United Kingdom
2023 Rank: 36378
Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:
Physics & Astronomy
SubField 1:
Chemical Physics
SubField 2:
Nanoscience & Nanotechnology
Rank in SubField 1: 525 out of 100804 Researchers
Data For The Year: 2023
| Metrics | Self-Citations Excluded | All |
|---|---|---|
| Rank Based on Composite Score | 36378 | 39757 |
| Total Cites | 777 | 850 |
| H-index | 10 | 10 |
| Hm-index | 6 | 6 |
| Number of Single Authored Papers | 4 | 4 |
| Total Cites to Single Authored Papers | 44 | 44 |
| Number of Single+First Authored Papers | 20 | 20 |
| Total Cites to Single+First Authored Papers | 75 | 83 |
| Number of Single+First+Last Authored Papers | 152 | 152 |
| Total Cites to Single+First+Last Authored Papers | 615 | 652 |
| Composite Score | 3 | 3 |
| Number of Distinct Citing Papers | 530 | 551 |
| Ratio of Total Citations to Distinct Citing Papers | 1.47 | 1.54 |
| Self-Citation Percentage |
8.59%
|
|
Johnston, Roy L.
University of Birmingham,
United Kingdom
2022 Rank: 37884
Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:
Physics & Astronomy
SubField 1:
Chemical Physics
SubField 2:
Nanoscience & Nanotechnology
Rank in SubField 1: 587 out of 95895 Researchers
Data For The Year: 2022
| Metrics | Self-Citations Excluded | All |
|---|---|---|
| Rank Based on Composite Score | 37884 | 37086 |
| Total Cites | 750 | 831 |
| H-index | 11 | 12 |
| Hm-index | 6 | 7 |
| Number of Single Authored Papers | 4 | 4 |
| Total Cites to Single Authored Papers | 37 | 39 |
| Number of Single+First Authored Papers | 20 | 20 |
| Total Cites to Single+First Authored Papers | 52 | 54 |
| Number of Single+First+Last Authored Papers | 149 | 149 |
| Total Cites to Single+First+Last Authored Papers | 581 | 623 |
| Composite Score | 3 | 3 |
| Number of Distinct Citing Papers | 511 | 533 |
| Ratio of Total Citations to Distinct Citing Papers | 1.47 | 1.56 |
| Self-Citation Percentage |
9.75%
|
|
Johnston, Roy L.
University of Birmingham,
United Kingdom
2021 Rank: 33127
Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:
Physics & Astronomy
SubField 1:
Chemical Physics
SubField 2:
Nanoscience & Nanotechnology
Rank in SubField 1: 566 out of 92738 Researchers
Data For The Year: 2021
| Metrics | Self-Citations Excluded | All |
|---|---|---|
| Rank Based on Composite Score | 33127 | 33429 |
| Total Cites | 1205 | 1319 |
| H-index | 13 | 14 |
| Hm-index | 8 | 9 |
| Number of Single Authored Papers | 4 | 4 |
| Total Cites to Single Authored Papers | 56 | 58 |
| Number of Single+First Authored Papers | 20 | 20 |
| Total Cites to Single+First Authored Papers | 92 | 94 |
| Number of Single+First+Last Authored Papers | 151 | 151 |
| Total Cites to Single+First+Last Authored Papers | 963 | 1036 |
| Composite Score | 3 | 3 |
| Number of Distinct Citing Papers | 835 | 867 |
| Ratio of Total Citations to Distinct Citing Papers | 1.44 | 1.52 |
| Self-Citation Percentage |
8.64%
|
|
Johnston, Roy L.
University of Birmingham,
United Kingdom
2020 Rank: 26636
Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:
Physics & Astronomy
SubField 1:
Chemical Physics
SubField 2:
Nanoscience & Nanotechnology
Rank in SubField 1: 501 out of 73903 Researchers
Data For The Year: 2020
| Metrics | Self-Citations Excluded | All |
|---|---|---|
| Rank Based on Composite Score | 26636 | 25023 |
| Total Cites | 1066 | 1232 |
| H-index | 11 | 14 |
| Hm-index | 7 | 7 |
| Number of Single Authored Papers | 5 | 5 |
| Total Cites to Single Authored Papers | 53 | 55 |
| Number of Single+First Authored Papers | 21 | 21 |
| Total Cites to Single+First Authored Papers | 89 | 92 |
| Number of Single+First+Last Authored Papers | 150 | 150 |
| Total Cites to Single+First+Last Authored Papers | 852 | 960 |
| Composite Score | 3 | 3 |
| Number of Distinct Citing Papers | 718 | 762 |
| Ratio of Total Citations to Distinct Citing Papers | 1.48 | 1.62 |
| Self-Citation Percentage |
13.47%
|
|
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