Size- and time-resolved pyrometry of single burning micron-sized metal particle : high accuracy and wide temperature range using a single consumer camera
(2026) In Proceedings of the Combustion Institute 42.- Abstract
Accurate temperature measurement is essential for understanding the combustion behavior of single micron-sized metal particles. Conventional two-color pyrometry typically relies on high-speed cameras to provide temporal resolution, but their high noise and limited dynamic range restrict both accuracy and measurable temperature range. A two-color pyrometry method based on a high-resolution consumer-grade color camera is presented. A vibrating mirror in the optical path encodes temporal information into the particle emission streak, enabling temporal resolution comparable to that of high-speed imaging. Meanwhile, the high spatial resolution and large sensor area allow both the initial particle diameter and the complete combustion... (More)
Accurate temperature measurement is essential for understanding the combustion behavior of single micron-sized metal particles. Conventional two-color pyrometry typically relies on high-speed cameras to provide temporal resolution, but their high noise and limited dynamic range restrict both accuracy and measurable temperature range. A two-color pyrometry method based on a high-resolution consumer-grade color camera is presented. A vibrating mirror in the optical path encodes temporal information into the particle emission streak, enabling temporal resolution comparable to that of high-speed imaging. Meanwhile, the high spatial resolution and large sensor area allow both the initial particle diameter and the complete combustion trajectory to be recorded in a single image. Owing to the lower noise and wider dynamic range of the camera sensor, the measurable temperature range is significantly extended and the measurement accuracy is improved. In addition, the system cost is at least one order of magnitude lower than that of conventional high-speed camera setups, substantially lowering the barrier to single-particle combustion diagnostics. Novelty and significance statement A low-cost optical diagnostic is developed to measure the combustion temperature evolution and initial size of single micron-sized metal particles. Novelty arises from a purpose-built optical configuration that encodes temporal information into spatial features within a single image, enabling time-resolved pyrometry with a consumer-grade camera. The approach further leverages intrinsic consumer-camera sensor advantages to extend the usable temperature range and improve temperature accuracy relative to conventional high-speed imaging pyrometry. With instrumentation cost reduced significantly without sacrificing fidelity, the method broadens access to high-quality single-particle pyrometry and combustion-related applications.
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- author
- Cen, Liulin ; Qian, Yong LU ; Mi, Xiao Cheng ; Li, Zhongshan LU and Lu, Xingcai
- organization
- publishing date
- 2026
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- High temperature measurement, Metal fuel, Particle combustion, Size- and time-resolved, Two-color pyrometry
- in
- Proceedings of the Combustion Institute
- volume
- 42
- article number
- 106277
- publisher
- Elsevier
- external identifiers
-
- scopus:105045191562
- ISSN
- 1540-7489
- DOI
- 10.1016/j.proci.2026.106277
- language
- English
- LU publication?
- yes
- additional info
- Publisher Copyright: © 2026 The Combustion Institute.
- id
- 1f5c68c7-a239-4642-b7d0-50dcbd6a8bd0
- date added to LUP
- 2026-09-08 09:45:26
- date last changed
- 2026-09-08 13:03:56
@article{1f5c68c7-a239-4642-b7d0-50dcbd6a8bd0,
abstract = {{<p>Accurate temperature measurement is essential for understanding the combustion behavior of single micron-sized metal particles. Conventional two-color pyrometry typically relies on high-speed cameras to provide temporal resolution, but their high noise and limited dynamic range restrict both accuracy and measurable temperature range. A two-color pyrometry method based on a high-resolution consumer-grade color camera is presented. A vibrating mirror in the optical path encodes temporal information into the particle emission streak, enabling temporal resolution comparable to that of high-speed imaging. Meanwhile, the high spatial resolution and large sensor area allow both the initial particle diameter and the complete combustion trajectory to be recorded in a single image. Owing to the lower noise and wider dynamic range of the camera sensor, the measurable temperature range is significantly extended and the measurement accuracy is improved. In addition, the system cost is at least one order of magnitude lower than that of conventional high-speed camera setups, substantially lowering the barrier to single-particle combustion diagnostics. Novelty and significance statement A low-cost optical diagnostic is developed to measure the combustion temperature evolution and initial size of single micron-sized metal particles. Novelty arises from a purpose-built optical configuration that encodes temporal information into spatial features within a single image, enabling time-resolved pyrometry with a consumer-grade camera. The approach further leverages intrinsic consumer-camera sensor advantages to extend the usable temperature range and improve temperature accuracy relative to conventional high-speed imaging pyrometry. With instrumentation cost reduced significantly without sacrificing fidelity, the method broadens access to high-quality single-particle pyrometry and combustion-related applications.</p>}},
author = {{Cen, Liulin and Qian, Yong and Mi, Xiao Cheng and Li, Zhongshan and Lu, Xingcai}},
issn = {{1540-7489}},
keywords = {{High temperature measurement; Metal fuel; Particle combustion; Size- and time-resolved; Two-color pyrometry}},
language = {{eng}},
publisher = {{Elsevier}},
series = {{Proceedings of the Combustion Institute}},
title = {{Size- and time-resolved pyrometry of single burning micron-sized metal particle : high accuracy and wide temperature range using a single consumer camera}},
url = {{http://dx.doi.org/10.1016/j.proci.2026.106277}},
doi = {{10.1016/j.proci.2026.106277}},
volume = {{42}},
year = {{2026}},
}