Thermally activated tunneling in carbon nanotube carbon black hybrid nanofiller polymer nanocomposites: Influence of electronic subbands on thermoresistivity
カーボンナノチューブとカーボンブラックのハイブリッドナノフィラーを用いたポリマーナノ複合材料における熱活性化トンネリング：電子サブバンドが熱抵抗率に及ぼす影響 (AI 翻訳)
Mojtaba Haghgoo, R. Ansari
🤖 gxceed AI 要約
日本語
本研究は、カーボンブラックとカーボンナノチューブのハイブリッドナノフィラーを含むポリマーナノ複合材料の熱抵抗挙動をシミュレーションするパーコレーションモデルを開発した。温度依存の電子トンネリングと電子サブバンドの影響を組み込み、実験データと良好な一致を示した。このモデルにより、温度安定性または高感度の熱抵抗材料の設計が可能になる。
English
This study develops a simulation-based percolation model to investigate thermoresistivity in polymer nanocomposites with carbon black and carbon nanotube hybrid nanofillers. It incorporates temperature-dependent electron tunneling and electronic subbands, showing good agreement with experimental data. The model enables design of temperature-stable or highly sensitive thermoresistive materials.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
この研究は材料科学の基礎研究であり、日本のGX文脈での直接的な関連性は低いが、エネルギー効率の高いセンサーや自己制御ヒーターの開発に寄与する可能性がある。
In the global GX context
This materials science research has limited direct relevance to global GX disclosure frameworks, but could contribute to energy-efficient sensor and heater technologies, indirectly supporting decarbonization.
👥 読者別の含意
🔬研究者:Materials scientists studying conductive polymer composites may find the modeling approach useful for designing thermoresistive materials.
📄 Abstract（原文）
The thermoresistive behavior of conductive polymer nanocomposites is critical for applications such as temperature sensors, thermistors, and self-regulating heaters. However, understanding how temperature influences charge transport in hybrid nanofiller systems remains challenging due to the complex interplay between matrix thermal expansion, filler geometry, and quantum tunneling. This study develops a simulation-based percolation model to investigate thermoresistivity in polymer nanocomposites containing carbon black (CB) and carbon nanotube (CNT) hybrid nanofiller. The aim is to quantitatively elucidate how temperature affects electrical resistivity by incorporating the key physical mechanisms governing thermally activated charge transport, including the temperature coefficient of resistance of conductive fillers, the thermal expansion coefficient of the polymer matrix, and temperature-dependent electron tunneling through electronic subbands. A major challenge addressed is the accurate representation of tunneling resistance as a function of temperature-dependent inter-filler distances, while accounting for confinement-induced electronic subbands in CB nanoparticles and CNTs. The model predicts that thermoresistivity increases with random nanofiller orientation and low CNT aspect ratios. Validation against experimental data reported in the literature demonstrates good agreement across a range of filler concentrations, and temperatures. The results further show that thermoresistivity can be systematically tailored by adjusting the CNT and CB properties, enabling the design of either temperature-stable conductive composites or highly sensitive thermoresistive materials.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1177/08927057261475908first seen 2026-08-09 05:14:00
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