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科技與工程學院
光電工程研究所
學位論文
學位論文
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http://rportal.lib.ntnu.edu.tw/handle/20.500.12235/73896
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search.filters.author.Chou, Yi-Cheng
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search.filters.author.周奕成
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search.filters.subject.SQUID
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search.filters.subject.雙通道 SQUID
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search.filters.subject.雙頻雙通道
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2015
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高靈敏度雙頻磁訊號感測系統之研製
(
2015
)
周奕成
;
Chou, Yi-Cheng
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超導量子干涉元件(Superconducting Quantum Interference Device,SQUID)在生物醫學方面為何能使用的如此頻繁,因為SQUID最低能感測到的磁場大小為5×10−18 T,對磁訊號的感測非常靈敏,故運用在量測微量磁訊號的系統也能夠有效地提升其靈敏度。 但因為SQUID在製成上需要較高的技術層面,成本與售價自然需要較高的金額。本研究針對SQUID對磁訊號的靈敏度開發雙通道量測系統,運用鐵芯能夠傳導磁通的原理,讓磁訊號能經鐵芯傳導不同頻率的磁訊號給SQUID,達成雙頻率通道的感測系統,且不失SQUID對微量磁訊號的高靈敏度。 本研究的雙頻通道系統也能應用在不同的感磁架構,本論文以振動樣品磁力儀的應用為例,已經能成功量出不同頻率下磁流體在飽和磁場下的飽和磁化量,達到提升效率的目的。
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