TY - JOUR
T1 - Microsecond Dynamic Response Calibration of ITO Thin-Film Thermocouples under Laser and Detonation Conditions
AU - Xinhang, Jin
AU - Binghe, Ma
AU - Jinjun, Deng
AU - Xingxu, Zhang
N1 - Publisher Copyright:
© 2001-2012 IEEE.
PY - 2025
Y1 - 2025
N2 - In this work, we designed and built two types of calibration devices to study the dynamic characteristics of the indium tin oxide (ITO) thin-film thermocouples (TFTCs) under different conditions. The first device, based on a nanosecond laser, generates a 150 mW heat pulse within 25 ns, and the experimental analysis of the cooling process reveals the dynamic characteristics of the ITO TFTCs under natural convection conditions. The second device uses a detonation wave that generates a 270 °C airflow environment in 400 ns at 4.86 Mach, representing forced convection conditions. Experimental results show that in the nanosecond laser experiment, the time constant of the ITO TFTC is 122.08 μs, corresponding to a frequency response of 1.30 kHz. In contrast, in the detonation wave experiment, the time constant of the ITO TFTCs decreases to 15.65 μs and the frequency response increase to 10.17 kHz. These results demonstrate that the dynamic characteristics of the ITO TFTCs are not constant and can be significantly influenced by the measurement environment.
AB - In this work, we designed and built two types of calibration devices to study the dynamic characteristics of the indium tin oxide (ITO) thin-film thermocouples (TFTCs) under different conditions. The first device, based on a nanosecond laser, generates a 150 mW heat pulse within 25 ns, and the experimental analysis of the cooling process reveals the dynamic characteristics of the ITO TFTCs under natural convection conditions. The second device uses a detonation wave that generates a 270 °C airflow environment in 400 ns at 4.86 Mach, representing forced convection conditions. Experimental results show that in the nanosecond laser experiment, the time constant of the ITO TFTC is 122.08 μs, corresponding to a frequency response of 1.30 kHz. In contrast, in the detonation wave experiment, the time constant of the ITO TFTCs decreases to 15.65 μs and the frequency response increase to 10.17 kHz. These results demonstrate that the dynamic characteristics of the ITO TFTCs are not constant and can be significantly influenced by the measurement environment.
KW - detonation wave
KW - Dynamic characteristics
KW - frequency response
KW - thin film thermocouples
KW - time constant
UR - http://www.scopus.com/inward/record.url?scp=105001865764&partnerID=8YFLogxK
U2 - 10.1109/JSEN.2025.3555430
DO - 10.1109/JSEN.2025.3555430
M3 - 文章
AN - SCOPUS:105001865764
SN - 1530-437X
JO - IEEE Sensors Journal
JF - IEEE Sensors Journal
ER -