今後の課題

本研究において，線形性を保つ領域の大きさは一定ではなく材料固有であること，そし て材料の線形領域における正確な情報から長MFP領域の普遍化が可能であることを確認し た．しかしながら，LD計算による情報のみでは一部の材料に於いて現時点のモデル化だけ では不十分であり，ALD等の計算コストがかかる手法の必要性が確認できた．

今後はフォノンの部分的な熱伝導をより精度よくモデル化すること及び今回仮に用いた指 標をより厳密に意味解釈することを目標とする．

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謝辞

担当教員の塩見先生には大変お世話になりました．来年も引き続き的確な指導をお願い します．丸山先生には直接お話を伺う機会は少なかったのですが，それでもCNT的な意味 で印象的でした．千足先生からは社会の厳しさをその忙しそうな姿から学ぶことが出来ま した．渡辺さんには研究室のあれこれを教わりました．ポットのお湯の交換タイミングに は気をつけようと思います．石田さんには事務手続きを色々と行っていただきました．

志賀さんには研究のけの字からうの字まで教わりました．おそらく来年も無知ゆえの愚 かな言葉をエンチャントし続けると思いますが，勘弁してください．Jamesさん，おめでと うございます．堀さんには研究会で色々指摘を受けました．まともに受け答えできるよう にがんばります．村上さん，卒論には反映できませんでしたが IFC を無駄にはしません．

前野さんには忙しい中，卒論の校正を手伝っていただきました．ちゃんと参考にしました．

厳君は席が隣ということもあり多種多様の迷惑をかけました．この場を借りてお詫びし ます．その他名前を挙げなかった皆さんも一年間ありがとうございました＆色々ごめんな さいでした．