Si CMOSの非理想性を,ストキャスティックおよびアナログ画像処理に再利用する
Been Kwak1, Ryun-Han Koo2, Changhyeon Han1
1Department of Electrical Engineering, Hanyang University, Seoul 04763, Republic of Korea.
Science advances
|February 20, 2026
まとめ
研究者は,生成再結合ノイズや負微分抵抗のような半導体デバイスの非理想性を,高度なストキャスティックアナログコンピューティングのための機能的リソースに再利用しました. このシングルデバイスアプローチは,既存のCMOS技術を使用して多機能コンピューティングを可能にします.
科学分野:
- 半導体デバイスの物理 半導体デバイスの物理
- アナログコンピューティングアーキテクチャのアナログコンピューティングアーキテクチャ
- マテリアルサイエンス 材料科学
背景:
- 固有のデバイスの非理想性は,通常,従来の半導体工学で最小限に抑えられます.
- 1/fノイズと比較して,生成再結合 (G-R) ノイズと衝撃イオン化誘発負微分抵抗 (NDR) に限られた注意が払われてきました.
研究 の 目的:
- 先進的なストキャスティックアナログコンピューティングのためのデバイスの非理想性の戦略的再利用を実証する.
- G-RノイズとNDRを活用して,単一のデバイスレベルでの多機能アナログコンピューティングを行う.
主な方法:
- 深層チャネルトラップによるG-Rノイズとインパクトイオン化によるNDRを身体の電流で利用した.
- 産業用シリコンコンプリメンタリー金属酸化物半導体 (CMOS) 工法で製造された完全に枯渇したシリコン・オン・インソレーター・トランジスタを使用した.
- 適用されたバイアスの条件を再構成することによって,多機能コンピューティングを達成しました.
主要な成果:
- 制御可能な時間相関を持つ実証されたG-Rノイズ.
- 前例のないピークとバレーの比率 (2.78 × 10 ^ 4) でNDRを達成しました.
- シングルトランジスタはストキャスティック暗号化,ディテリミニスト信号読み出し,アナログ反転を行いました.
結論:
- 成熟したCMOS技術の未知のコンピューティングの可能性を明らかにした.
- エキゾチックな素材に基づいた建築に対するスケーラブルでエネルギー効率の良い代替案を提示した.
- 次世代のアナログコンピューティングシステムの基礎を築きました.
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