Acta Metrologica Sinica  2022, Vol. 43 Issue (9): 1142-1146    DOI: 10.3969/j.issn.1000-1158.2022.09.06
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Position Drift Compensation Method for Thermoreflectance Microscopy
LIU Yan,ZHAI Yu-wei,DING Chen,QIAO Yu-e,JING Xiao-dong,WU Ai-hua
The 13th Research Institute of China Electronics Technology Group Corporation, Shijiazhuang, Hebei 050051, China
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Abstract  Multiple images are acquired during the procedure of thermoreflectance microscopy, each pixel of the image should be bound to a fixed position of the object's surface throughout the procedure.Nevertheless, drifting of the object is inevitable, thus jeopardizing accuracy of the measurement.A sub-pixel image registration algorithm is put forward to estimate the drift, and the result is feed into a PID algorithm controlling a piezo nanopositioner to compensate for the position drift, so the real-time position drift correction is carried out.Experiments verify the performance of the algorithm and the effect of drift correction, the residual error of displacement correction is within 5nm, and errors introduced by position drift are well suppressed compared to uncompensated measurement, the test accuracy of thermoreflectance microscopy is improved.
Key wordsmetrology      sub-pixel image registration      thermoreflectance microscopy      position drift      PID     
Received: 09 February 2022      Published: 19 September 2022
PACS:  TB96  
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LIU Yan
ZHAI Yu-wei
DING Chen
QIAO Yu-e
JING Xiao-dong
WU Ai-hua
Cite this article:   
LIU Yan,ZHAI Yu-wei,DING Chen, et al. Position Drift Compensation Method for Thermoreflectance Microscopy[J]. Acta Metrologica Sinica, 2022, 43(9): 1142-1146.
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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2022.09.06     OR     http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2022/V43/I9/1142
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