Authors

Abstract

This article, introduces a new pixel which can emit infrared wavelengths from its surface and can be used for the purpose of cloaking objects from thermal cameras. This pixel can simulate the temperatures between 0 and 100ºC emited from an infrared radiation in LWIR (8-12 micrometres) region. Nanocomposite material is used in the pixel structure and this has increased its capacities like ZT factor %40-50 better than the commercial material like Bi2Te3. Technical aspects of the pixel such as the emission wavelengths, rate of temperature changing, thermal contrast, ZT factor and so on are discussed in this paper and were determined by using thermography, non-contact thermometry, radiometry, four probe ac method and temperature differential

Keywords

1. E L Dereniak and G D Boreman, “Inferared Detectors and Systems”, John Wiley & sons, Inc. (1996).
2. P W Kruse, Semiconduct. Semimet. 47 (1997) 17.
3. A Rogalski, Prog. Quantum Electron. 27 (2003) 59.
4. J D Vincent, “Fundamental of Inferared Detector Operation and Testings”, Wiley (1990).
5. R G Driggers, P Cox, and T Edwards, “Introduction to Inferared and Electro-Optical Systems”, Artech House, INC, Boston (1998).
6. J W Bos, “Thermoelectric materials: efficiencies found in nanocomposites, education in chemistry”, Royal Society of Chemistry (2012).
7. J Jiang, L Chen, Q Yao, S Bai, and Q Wang, Materials Chemistry and Physics, 92, 1 (2005) 39.
8. B Poudel, Q Hao, and Y Ma et al., Science, 320, 5876 (2008) 634.
9. Y Q Cao, X B Zhao, T J Zhu, X B Zhang, and J P Tu, Applied Physics Letters, 92 (2008) 14.
10. M Salavati-Niasari, M Bazarganipour, and F Davar, Journal of Alloys and Compounds, 489, 2 (2010) 530.
11. X Tang, W Xie, H Li, W Zhao, Q Zhang, and M Niino, Applied Physics Letters, 90, 1(2007) 5.
12. W Xie, X Tang, Y Yan, Q Zhang, and T M. Tritt, Applied Physics Letters, 94, 10 (2009) 4.
13. L D Zhao, B P Zhang, J F Li, M Zhou, W S Liu, and J Liu, Journal of Alloys and Compounds, 455, 1-2 (2008) 259.
14. G S Nolas, J Sharp, and H J Goldsmid, "Thermoelectrics: Basic Principles and New Materials Developments," Springer, New York, USA (2001).

ارتقاء امنیت وب با وف ایرانی