Internal Temperature Measurement of Optically Levitated Particles in Vacuum by Raman Thermometry.

Kou Li, Jiaming Liu, Xincai Xu, Zhuangzhuang Wang, Nan Li, Han Cai, Wenqiang Li, Huizhu Hu

Abstract read

In one paragraph

Article in Micromachines, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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4 · The record

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5 · Who and what money

Authors and funding

8 authors.

Kou LiState Key Laboratory of Extreme Photonics and Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, China.

Jiaming LiuState Key Laboratory of Extreme Photonics and Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, China.ORCID 0009-0008-3932-6469

Xincai XuState Key Laboratory of Extreme Photonics and Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, China.

Zhuangzhuang WangState Key Laboratory of Extreme Photonics and Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, China.

Nan LiState Key Laboratory of Extreme Photonics and Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, China.ORCID 0000-0003-3585-2273

Han CaiState Key Laboratory of Extreme Photonics and Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, China.

Wenqiang LiState Key Laboratory of Extreme Photonics and Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, China.ORCID 0000-0001-7001-5310

Huizhu HuState Key Laboratory of Extreme Photonics and Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, China.ORCID 0000-0003-1690-9414

Funding

Fundamental Research Funds for the Central Universities 226-2024-00018, 226-2025-00079National Natural Science Foundation of China 62205290, 62505276Natural Science Foundation of Zhejiang Province LD22F050002, LQN25F050006Young Elite Scientist Sponsorship Program by CAST YESS20240342

6 · The paper itself

Abstract

An optical levitation system in a vacuum is an efficient system to investigate the dynamics of isolated micro- and nanoparticles. However, the motion and stability of the trapped particles in this system can be affected by the internal temperature, which remains a challenge to measure. Conventional methods are constrained by material specificity or lack the capability for direct temperature measurement. Here, we demonstrate the application of Raman thermometry for non-contact temperature detection of an optically levitated fused silica sphere in vacuum. In addition, the experimental results reveal a linear increase in particle temperature with laser power, consistent with photothermal theory. The integration of Raman thermometry with the optical levitation system enables high-precision thermal sensing at the microscale, offering significant potential for applications in precision metrology and fundamental physics.

Indexed as

fused silicaoptical levitationphotothermal effectRaman thermometry

Identifiers

PMID41470553

DOI10.3390/mi16121388

PMCPMC12734972

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.