本研究主要是利用磁場與注射方式將磁性複合材料成型，利用此材料導引磁性粒子定位。將Mn - Zn鐵氧體粉末以固定體積濃度均勻分散在 PDMS 中形成磁性複合材料，在注射過程中利用控制磁場大小來影響表面能與磁能交互作用，產生均勻且細長的磁柱，控制磁場方向來導引此磁柱，形成包覆固定於管狀物上之環形結構，此結構可利用交流磁場加熱提高固化速度，並在適當磁場方向施加下，在此環形結構上下緣的局部區域，感應出較高磁場梯度，利用此磁場梯度可提高受磁化之磁性粒子在特定區域定位的效果，並在磁性粒子導引定位後，適時的移除或繼續施加外加磁場，可控制磁性粒子的釋放或再次聚集，此特性將有助於將具有包覆藥物的磁性粒子導引至欲治療的部位，提升藥物治療的效果。

This work presents a structure forming scheme that is capable of remotely shaping magnetic composites into desired geometries. The magnetic composites, which are made up of fine ferrite particles in PDMS pre-polymer matrices, are injected into controlled magnetic fields and deformed by the induced magnetic and interfacial forces. Directed by the magnetic fields, the injected composites can be longitudinally extruded, wound around targeted structures and attached firmly to them. Once magnetically heated and solidified, the composite structures can potentially serve as implants to assist the targeting of magnetic particles. When energized by external magnetic fields, the implanted structures in turn produce short-ranged forces that can guide the targeting of nearby magnetic particles. As such, the desired internal attraction for magnetic carrier targeting can be achieved and switched on/off remotely, which localizes the retention of carriers, accelerates the release of drugs, and improves the therapeutic efficiency.

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