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http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/4688
Title: | 微波加熱過程中的極化電荷屏蔽效應探討 Effects of Polarization-Charge Shielding in Microwave Heating |
Authors: | Ming-Syun Lin 林明勳 |
Advisor: | 朱國瑞 |
Keyword: | 微波加熱,極化電荷屏蔽效應,微波暗室, microwave heating,polarization charge shielding,anechoic chamber, |
Publication Year : | 2015 |
Degree: | 碩士 |
Abstract: | 為了探討正處於興新領域的微波加熱介電材質,其基本物理問題,我們提出極化電荷造成的屏蔽效應理論,以及此效應在微波加熱的實驗觀察。把非球型的樣品放入微波暗室,並用均勻的行進波照射。由於極化電荷造成的屏蔽效應,樣品的加熱速率,取決於樣品的形狀與其相對外加電場的方向,而這可能就是造成溫差的主要成因。這是此意義重大的效應,首次被完整研究。 To address a basic physics issue in the growing field of dielectric heating by microwaves,we present the theory and experimental observation on the effect of polarization-charge shielding. Non-spherical samples are irradiated by a uniform traveling wave in an anechoic chamber. The polarization-charge shielded heating rate is shown to be highly dependent on the sample’s shape and orientation relative to the wave electric field,which may become a major cause for an excessive temperature spread. This is a significant effect studied comprehensively for the first time,along with a demonstrated remedy. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/4688 |
Fulltext Rights: | 同意授權(全球公開) |
Appears in Collections: | 物理學系 |
Files in This Item:
File | Size | Format | |
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ntu-104-1.pdf | 545.73 kB | Adobe PDF | View/Open |
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