Application of Photonic Crystalline Infrared Stealth Films on Surface of Vehicle Engine Compartments

Biao LIU; Jiaming SHI; Xiangyin LÜ; Zongsheng CHEN; Zhigang LI

doi:10.3788/gzxb20215001.0150003

Acta Photonica Sinica, Volume. 50, Issue 1, 59(2021)

Application of Photonic Crystalline Infrared Stealth Films on Surface of Vehicle Engine Compartments

Biao LIU1...2,3, Jiaming SHI1,2,3, Xiangyin LÜ1,2,3, Zongsheng CHEN1,2,3,*, and Zhigang LI1,23 |Show fewer author(s)

¹State Key Laboratory of Pulsed Power Laser Technology， College of Electronic Engineering， National University of Defense Technology， Hefei230037， China

²Anhui Provincial Laboratory of Advanced Laser Technology， Hefei30037， China

³Key Laboratory of Infrared and Low Temperature Plasma of Anhui Province， Hefei2007， China

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Figures & Tables(8)

Fig. 1. Structure of the designed photonic crystal

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Fig. 2. Theoretical reflectance curves of photonic crystal

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Fig. 3. Practical reflectance curves of photonic crystal

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Fig. 4. Practical reflectance curves of low emissivity film

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Fig. 5. Mid-infrared thermal image of engine compartment

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Fig. 6. Mid-infrared thermal image of engine compartment

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Table 1. Mid-infrared experimental data

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Table 1. Mid-infrared experimental data

Time	The surface of engine compartment T₁/℃	Background T₂/℃	After attaching the photonic crystal film T₃/℃	After attaching the low emissivity film T₄/℃	T₁-T₃/℃	T₁-T₄/℃
14:00	51.35	38.81	41.31	46.75	10.04	4.60
21:00	21.20	17.95	17.14	17.55	4.06	3.65

Table 2. Far-infrared experimental data

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Table 2. Far-infrared experimental data

Time	The surface of engine compartment T₁'/℃	Background T₂'/℃	After attaching the photonic crystal film T₃'/℃	After attaching the low emissivity film T₄'/℃	T₁'-T₃'/℃	T₁'-T₄'/℃
14:00	49.82	37.71	33.98	23.47	15.84	26.35
21:00	28.99	19.87	16.40	7.04	12.59	21.95

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Biao LIU, Jiaming SHI, Xiangyin LÜ, Zongsheng CHEN, Zhigang LI. Application of Photonic Crystalline Infrared Stealth Films on Surface of Vehicle Engine Compartments[J]. Acta Photonica Sinica, 2021, 50(1): 59

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