本論文主要研究的方向包括：（一）奈米尺寸的聚焦離子束(FIB)蝕刻加工、（二）高溫超導約瑟芬界面的奈米約瑟芬元件研製探索、(三)奈米約瑟芬元件延伸作為奈米量子干涉元件與微米以上直流量子干涉元件製作。我們成功的研製了在高溫超導釔鋇銅氧的奈米量子干涉元件，它是藉由奈米尺度約瑟芬元件所構成的。在奈米約瑟芬元件的製程上我們研究了因似量子相滑現象而製作的奈米約瑟芬元件 與破壞材料方式營造弱連結的奈米約瑟芬元件，他們都能在超導臨界溫度( Tc )後產生我們期望的弱連結，有適當的弱連結則可能形成量子穿隧的約瑟芬界面，進而行成奈米約瑟芬元件。所以只要我們利用奈米蝕刻技術將超導橋的弱連結區域縮減到50 nm左右窄的寬度，在臨界溫度時將可能產生相當的弱連結。只要在超導橋上把做保護作用的金層做適當的材料破壞後讓離子束直接曝射於高溫超導材料上也可能會形成較差的超導結構進而形成SS’S結構。而且這奈米約瑟芬元件我們可以組合成奈米量子干涉元件，更可串聯多個奈米約瑟芬元件及串聯多個奈米量子干涉元件，以加成其臨界電流與靈敏度。 Abstract.High-Tc YBCO NanoSQUID was prepared successfully using Focused Ion Beam (FIB) method, assembling with multi-nano-junction components. Reducing the weak link superconducting bridge to the width of < 50 nm and an expected resistance formed a Josephine interference barrier of quantum tunnelling at temperature T<TC. When a critical current is passed through it (the lower the temperature, the larger the current) its resistance starts to oscillator with applied magnetic field while the more multi-nano-junction as more nano-SQUID, it was interest to investigate the improvement of sensitivity of critical current This was the aim of the reported study.
