Optical properties and cooling technologies in crystalline materials
Optical properties and cooling technologies in crystalline materials is a research topic within Atomic and Molecular Physics, and Optics. Science Explorer counts 8.3k research works in it since 1950. 10.0% of them reached the world's top 10% most cited for their field and year.
This cluster of papers focuses on the use of laser cooling and optical refrigeration techniques to achieve cryogenic temperatures in solids, particularly semiconductors and rare-earth-doped materials. The research covers topics such as solid-state optical refrigeration, crystal growth, electronic structure analysis, and minimizing thermal loading in the context of radiation-balanced lasers.
- Laser Cooling
- Optical Refrigeration
- Semiconductor
- Solid-State
- Cryogenic Temperatures
- Rare-Earth-Doped Materials
- Crystal Growth
- Electronic Structure
- Thermal Loading
- Radiation-Balanced Lasers
- Research works
- 8.3k fractional, since 1950
- In the world top 10%
- 826 per year above
- Top-10% rate
- 10.0% share of its works in the world top 10%
- Growth, 2018-21 → 2022-25
- +43% the tick is no change
- Largest producer
China
53% of the 10 largest, 2022-now
Which countries lead Optical properties and cooling technologies in crystalline materials research?
By volume, China and the United States publish the most (850 and 192 works in 2022-now).
By volume, 2022-now
- 1
China
850 works
- 2
United States
192 works
- 3
India
134 works
- 4
Russia
112 works
- 5
Japan
66 works
- 6
Germany
60 works
- 7
South Korea
57 works
- 8
France
54 works
- 9
Italy
41 works
- 10
Spain
35 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.
Shares of the rows listed above, not of the whole node.
Which institutions lead Optical properties and cooling technologies in crystalline materials research?
By volume in 2022-now, Chinese Academy of Sciences publishes the most Optical properties and cooling technologies in crystalline materials research, followed by Russian Academy of Sciences and Centre National de la Recherche Scientifique.
By volume, 2022-now
- 1
Chinese Academy of SciencesChina
77 works
- 2
Russian Academy of SciencesRussia
40 works
- 3
Centre National de la Recherche ScientifiqueFrance
28 works
- 4
Polish Academy of Sciences
Poland
16 works
- 5
Shandong UniversityChina
15 works
- 6
Jilin UniversityChina
14 works
- 7
University of Chinese Academy of SciencesChina
14 works
- 8
Guangxi UniversityChina
13 works
- 9
Zhejiang UniversityChina
13 works
- 10
Huazhong University of Science and TechnologyChina
12 works
Who are the leading researchers in Optical properties and cooling technologies in crystalline materials?
The most-cited researchers publishing on Optical properties and cooling technologies in crystalline materials include Zhong Lin Wang, Michaël Grätzel and Wei Huang.
- 1
Zhong Lin Wang
United States
491k citations
- 2
Michaël Grätzel
Switzerland
458k citations
- 3
Wei Huang
China
267k citations
- 4
Kenji Watanabe
Japan
237k citations
- 5
Takashi Taniguchi
Japan
227k citations
- 6
Kai You Wang
China
224k citations
- 7
Lei Jiang
China
214k citations
- 8
Mercouri G. Kanatzidis
United States
196k citations
- 9
Edward Hartley Sargent
Canada
185k citations
- 10
Richard Henry Friend
United Kingdom
185k citations
Ranked by citations received across their whole record, among researchers with at least three works on this topic.
Where is Optical properties and cooling technologies in crystalline materials research done?
The largest centres of Optical properties and cooling technologies in crystalline materials research in 2022-now are Beijing (China), Shanghai (China), Nanjing (China) and Wuhan (China). Among places with at least 20 works in it, it is an unusually large share of all research in Changchun and Saint Petersburg.
Largest cities, 2022-now
Where it is the local speciality
- ChangchunCN · 26.6 works5.1×
- Saint PetersburgRU · 26.0 works4.9×
Location quotient: how much more of its research is in Optical properties and cooling technologies in crystalline materials than the world average.
Where is the best place to study Optical properties and cooling technologies in crystalline materials?
Among universities, judged by research, Huazhong University of Science and Technology, Jilin University and University of Chinese Academy of Sciences score highest, combining citation excellence, specialisation, size, growth and international reach. Research strength is one signal when choosing where to study; it does not measure teaching.
One dot per university in the first ten of the table below, at the default weights. The upper left is the interesting corner: small places doing unusually strong work.
| # | University | Score | Top 10% | Specialisation | Works | Growth |
|---|---|---|---|---|---|---|
| 1 | Huazhong University of Science and TechnologyChina |
69.9 | 22.7% | 3.7× | 12 | +21.0% |
| 2 | Jilin UniversityChina |
69.8 | 15.1% | 7.1× | 14 | +73.3% |
| 3 | University of Chinese Academy of SciencesChina |
66.6 | 14.3% | 4.8× | 14 | +106.7% |
| 4 | Guangxi UniversityChina |
65.9 | 15.2% | 12.0× | 13 | +322.7% |
| 5 | Zhengzhou UniversityChina |
65.8 | 26.0% | 4.4× | 10 | +434.4% |
| 6 | Shandong UniversityChina |
65.1 | 11.2% | 6.5× | 15 | +96.7% |
| 7 | Zhejiang UniversityChina |
62.0 | 14.5% | 2.7× | 13 | +109.1% |
| 8 | University of Science and Technology of ChinaChina |
60.4 | 19.6% | 4.4× | 9 | +92.5% |
| 9 | Wuhan University of TechnologyChina |
41.8 | 10.4% | 6.8× | 10 | +152.7% |
| 10 | Peking UniversityChina |
40.2 | 11.5% | 2.3× | 8 | +60.3% |
| 11 | Harbin Institute of TechnologyChina |
39.3 | 14.8% | 3.6× | 10 | -17.0% |
| 12 | Shanghai Jiao Tong UniversityChina |
36.6 | 12.5% | 1.6× | 8 | +41.0% |
| 13 | Sichuan UniversityChina |
31.8 | 11.3% | 2.3× | 9 | +320.4% |
| 14 | China Jiliang UniversityChina |
28.9 | 3.1% | 30.2× | 11 | -9.5% |
Universities only. The score blends citation excellence (40%), size (30%), specialisation (10%), growth (10%), international reach (10%), 2022-now; growth compares 2018-21 with 2022-25 and counts up to +20%, since a jump from a small base is mostly noise.
Every institution in Optical properties and cooling technologies in crystalline materials, country by countryIs Optical properties and cooling technologies in crystalline materials research growing?
Output in 2022-2025 was 43% higher than in 2018-2021, peaking in 2025. The fastest-growing topics are Optical properties and cooling technologies in crystalline materials.
The same series as a ribbon: one cell per year, darker for more. The line above answers how much; this answers when.
Its share of all research
Growing output can still be a shrinking share: all of science grows. This is Optical properties and cooling technologies in crystalline materials as a percentage of every work published that year, 0.0096% in 2024.
Fractional works of Optical properties and cooling technologies in crystalline materials over all fractional works that year. How the balance of science has shifted.
How much of it reaches the world top 10%
Year by year.
Of each year's works in it, the share that reached the world's 10% most cited for their field and year. A field is the world for its own topics, so there is no other line to hold it against.
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.
Discussion
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