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Topic · Biomedical Engineering

Photocathodes and Microchannel Plates

Photocathodes and Microchannel Plates is a research topic within Biomedical Engineering. Science Explorer counts 8.6k research works in it since 1950. 13.5% of them reached the world's top 10% most cited for their field and year.

This cluster of papers focuses on the development and optimization of high-efficiency photocathodes for electron sources, with a particular emphasis on materials such as GaN and GaAs. The research covers topics such as quantum efficiency, negative electron affinity, surface photovoltage, microchannel plates, spin polarization, and the application of these photocathodes in ultraviolet detectors.

  • Photocathodes
  • Electron Sources
  • Quantum Efficiency
  • Negative Electron Affinity
  • GaN
  • GaAs
  • Surface Photovoltage
  • Microchannel Plates
  • Spin Polarization
  • Ultraviolet Detectors
Research works
8.6k
fractional, since 1950
In the world top 10%
1.2k
per year above
Top-10% rate
13.5%
share of its works in the world top 10%
Growth, 2013–17 → 2018–22
-4%
the tick is no change

Which countries lead Photocathodes and Microchannel Plates research?

By volume, China and the United States publish the most (288 and 200 works in 2022–2025).

By volume, 2022–2025

  1. 1 China 288 works
  2. 2 United States 200 works
  3. 3 Japan 54 works
  4. 4 Russia 48 works
  5. 5 Germany 47 works
  6. 6 France 29 works
  7. 7 Italy 26 works
  8. 8 India 22 works
  9. 9 United Kingdom 20 works
  10. 10 South Korea 16 works

How concentrated that is

The same countries as shares of everything the list above accounts for. A node where two countries do two thirds of the work and one spread evenly across twelve read alike as a ranking and not at all alike here.

China: 38.4%United States: 26.7%Japan: 7.2%Russia: 6.4%6 others listed: 21.3%38%largest
China288 · 38.4%United States200 · 26.7%Japan54 · 7.2%Russia48 · 6.4%6 others listed160 · 21.3%

Shares of the rows listed above, not of the whole node.

Which institutions lead Photocathodes and Microchannel Plates research?

By volume in 2022–2025, Nanjing University of Science and Technology publishes the most Photocathodes and Microchannel Plates research, followed by Chinese Academy of Sciences and University of Chinese Academy of Sciences.

By volume, 2022–2025

  1. 1 Nanjing University of Science and TechnologyChina 29 works
  2. 2 Chinese Academy of SciencesChina 17 works
  3. 3 University of Chinese Academy of SciencesChina 13 works
  4. 4 Center for Astrophysics Harvard & SmithsonianUnited States 12 works
  5. 5 University of Science and Technology of ChinaChina 9 works
  6. 6 Nagoya UniversityJapan 8 works
  7. 7 China Building Materials AcademyChina 7 works
  8. 8 Zhengzhou UniversityChina 7 works
  9. 9 Deutsches Elektronen-Synchrotron DESYGermany 7 works
  10. 10 Thomas Jefferson National Accelerator FacilityUnited States 6 works

Who are the leading researchers in Photocathodes and Microchannel Plates?

The most-cited researchers publishing on Photocathodes and Microchannel Plates include J. Chudoba.

  1. 1 J. Chudoba France 7.4k citations

Ranked by citations received across their whole record, among researchers with at least three works on this topic.

Where is Photocathodes and Microchannel Plates research done?

The largest centres of Photocathodes and Microchannel Plates research in 2022–2025 are Beijing (China), Nanjing (China), Xi'an (China) and Moscow (Russia).

Largest cities, 2022–2025

  1. 1 Beijing China 81 works
  2. 2 Nanjing China 46 works
  3. 3 Xi'an China 20 works
  4. 4 Moscow Russia 17 works
  5. 5 Cambridge United States 15 works
  6. 6 Hefei China 14 works
  7. 7 Tokyo Japan 13 works
  8. 8 Zhengzhou China 13 works
  9. 9 Shanghai China 11 works
  10. 10 Nagoya Japan 11 works
See Photocathodes and Microchannel Plates on the map

Where is the best place to study Photocathodes and Microchannel Plates?

Among universities, judged by research, University of Chinese Academy of Sciences, University of Science and Technology of China and Nanjing University of Science and Technology score highest, combining excellence, specialisation, size, growth and international reach. Research strength is one signal when choosing where to study; it does not measure teaching.

0%5%10%mean 5.425%fractional works in this node (log) →share in the world top 10% →University of Chinese Academy of Sciences: 13, 8.9%University of Science and Technology of China: 9, 11.6%Nanjing University of Science and Technology: 29, 1.2%Center for Astrophysics Harvard & Smithsonian: 12, 0.0%University of Scienc…University of Chines…Nanjing University o…Center for Astrophys…
above the meannear itbelow it

One dot per university in the table below. The upper left is the interesting corner: small places doing unusually strong work.

#UniversityScoreTop 10%SpecialisationWorksGrowth
1 University of Chinese Academy of SciencesChina 64.98.9%9.1×13 +13.4%
2 University of Science and Technology of ChinaChina 59.111.6%9.0×9 -11.0%
3 Nanjing University of Science and TechnologyChina 51.01.2%41.2×29 -35.4%
4 Center for Astrophysics Harvard & SmithsonianUnited States 39.70.0%188.4×12 -47.8%

Universities only. Score blends excellence (30%), specialisation (25%), size (20%), growth (15%) and international reach (10%), 2015–2022; growth compares 2010–14 with 2015–19.

Is Photocathodes and Microchannel Plates research growing?

Output in 2018–2022 was 4% lower than in 2013–2017, peaking in 2025. The fastest-growing topics are Photocathodes and Microchannel Plates.

19801990200020102020
grewheldshrank

The same series as a ribbon — one cell per year, darker for more. The line above answers how much; this answers when.

Which topics inside it are moving

Growth and decline on one axis around a shared zero. Two lists side by side hide the thing that matters: whether the growth dwarfs the decline, or the other way round.