Open AccessTunable Thermal Pattern for Thermal Illusion and Encrypted Messaging
Author(s) -
Rihong Qiu
Publication year - 2022
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2174/1/012089
Subject(s) - bilayer , metamaterial , thermal , computer science , encryption , cloak , materials science , illusion , optoelectronics , physics , computer network , chemistry , membrane , biochemistry , neuroscience , meteorology , biology
Recently, metamaterials which can actively tuning heat flux has attracted a lot of researchers and these thermal functional materials can be used in many thermal application scenarios such as encrypted messaging and thermal illusion. In this paper, the bilayer structure array with a chessboard-like structure has been proposed and we have numerically acquired a tunable thermal pattern based on effective medium theory. Through this strategy, a thermal pattern which is almost the same with the patterns of ‘ECE’ can be obtained. After quickly tuning this 3*12 array of the 4*4 chessboard-like bilayer structure, another thermal pattern which looks like the patterns of ‘SOS’ is observed in the infrared camera instead, demonstrating the feasibility of thermal illusion. Furthermore, the functionality of encrypted thermal messaging is also numerically demonstrated by resorting to storing the analog patterns of the binary numbers. Besides, this kind of tunable bilayer array is quite simple and flexible, and it can also serve as thermal metamaterial when the corresponding matching function is satisfied. In all, this present bilayer structure array with a chessboard-like structure can obtain tunable thermal patterns without disassembly of any components and it might open more strategies for creating novel thermal functionalities.