隨著人工智慧與物聯網技術的迅速發展，高效能且低功耗的記憶體元件需求日益增加。可變電阻式記憶體（RRAM）因具備高速運作、非揮發性及高儲存密度等特性，成為新一代記憶體技術的重要候選。本研究以可生物降解的柑橘果膠為基材，製備柔性RRAM元件，並結合原子層沉積（ALD）技術沉積氧化鋁（Al₂O₃）薄膜，以提升元件的電性穩定性與降低漏電流。實驗結果顯示，經Al₂O₃修飾後的元件展現超過10⁴的高開關比，具備100次以上的重複切換穩定性，以及長達10⁴秒的資料保持特性。此外，該裝置可成功模擬生物突觸行為，呈現明顯的短期與長期突觸可塑性。此研究證明柑橘果膠/氧化鋁複合結構不僅能作為高性能、環保記憶體材料，亦具潛力應用於神經形態運算與類腦計算領域，為永續電子元件發展提供新契機。

With the rapid advancement of artificial intelligence and the Internet of Things, there is a growing demand for high-performance and low-power memory devices. Resistive random-access memory (RRAM) has emerged as a promising candidate due to its high-speed operation, nonvolatility, and high storage density. In this study, biodegradable citrus pectin was utilized to fabricate flexible RRAM devices, and aluminum oxide (Al₂O₃) films were deposited by atomic layer deposition (ALD) to enhance device stability and suppress leakage current. The resulting devices exhibited an ON/OFF ratio exceeding 10⁴, stable switching endurance over 100 cycles, and data retention up to 10⁴ seconds. Moreover, the devices successfully mimicked biological synaptic behaviors, showing distinct short-term and long-term synaptic plasticity. These findings demonstrate that the citrus pectin/Al₂O₃ hybrid structure not only serves as an eco-friendly, high-performance memory material but also holds great potential for applications in neuromorphic and brain-inspired computing, offering new opportunities for sustainable electronics.

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