熱超材料是一種人造材料，通過精心設計以展現所需的物理特性，大部份的熱超材料都需要兩種以上的材料組成，也就是複合材料，隨著複合材料的廣泛應用，如何界定不同材料之間的界面問題變得至關重要，近年來有許多學者投入相關研究，而過去的研究大多假設兩種不同材料的接觸界面是完美結合的，但是從理論上來看，界面總是存在著不完美性，而這種不完美性源於多種因素，包括材料結構的差異、化學成分的變化以及表面的粗糙度等，即使在外觀上兩種材料的接觸界面看起來非常緊密，從微觀角度來看，仍然存在著各種不規則性、裂縫、間隙等微小特徵，特別是在微小尺度下，由於接觸面積增加，不完界面的效應變得更加顯著，並對整體材料的性能產生重要影響。本研究延續張晉銓(2014)使用座標轉換法設計之旋轉斗篷與紀佩瑩(2016)之熱集中或熱屏蔽斗篷，結合中性內含物的概念，計算出了二維與三維空間中，異向性材料的等效熱傳導係數，對於完全異向性材料，我們提出了雙層環狀斗篷模型，其中每一層斗篷材料都使用座標轉換法進行設計，使熱流進入斗篷後有著旋轉的效果，這使我們對具有不完美界面的熱旋轉斗篷有所發想，延伸雙層斗篷的概念，將第二層斗篷厚度逼近極小，使用旋轉斗篷中的旋轉角來模擬出具有不完美界面的熱旋轉斗篷，旋轉角越大，代表著界面的不完美性越大，結果顯示，即使有著不完美界面，熱旋轉斗篷都能成功的保護內層區域不被外部觀察者發現，達到良好的隱形效果。

Thermal metamaterials are man-made materials that are carefully designed to exhibit the required physical properties. Most thermal metamaterials require more than two materials, that is, composite materials. In recent years, many scholars have invested in related research, and most of the previous research assumed that the contact interface of two different materials is perfectly combined, but in fact there is always an imperfection along the interface. This thesis examined the thermal rotation device first designed by Chang (2014) based on the coordinate transformation method. The difference is that we consider that the interface between the materials is an imperfect interface. Firstly, we explored the influence of imperfect interface on the thermal rotation device. Then, we proposed a double-layer thermal rotation cloak model, combined with the concept of neutral inclusions, and used a layer of anisotropic material to simulate the imperfect interface. We successfully simulated a thermal rotating cloak with an imperfect interface, and the results show that even considering the imperfect interface, the thermal rotating cloak can rotate the heat flow in the inner region at a specific angle and make it invisible to the outside field.

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