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KAKEN_21224010seika.pdf
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Download
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:1.3 MB
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:Apr 8, 2016 |
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Total downloads since Apr 8, 2016 : 567
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ナノスケール・ヘリウム物理学の構築とその応用
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ナノスケール・ヘリウム ブツリガク ノ コウチク ト ソノ オウヨウ
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Nanosukeru heriumu butsurigaku no kochiku to sono oyo
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Nanoscale helium physics and its applications
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白濱, 圭也
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シラハマ, ケイヤ
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Shirahama, Keiya
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| Affiliation |
慶應義塾大学・理工学部・教授
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Research team head
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科研費研究者番号 : 70251486
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本多, 謙介
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ホンダ, ケンスケ
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Honda, Kensuke
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山口大学・大学院理工学研究科・教授
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Research team member
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科研費研究者番号 : 60334314
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柴山, 義行
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シバヤマ, ヨシユキ
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Shibayama, Yoshiyuki
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慶應義塾大学・理工学部・講師
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Research team member
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科研費研究者番号 : 20327688
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村川, 智
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ムラカワ, サトシ
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Murakawa, Satoshi
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| Affiliation |
慶應義塾大学・理工学部・講師
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Research team member
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科研費研究者番号 : 90432004
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Koga, Aaron
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コガ, アーロン
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慶應義塾大学・理工学研究科・大学院生
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Research team member
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科研費研究者番号 :
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立木, 智也
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ツイキ, トモヤ
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| Romanization |
Tsuiki, Tomoya
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| Affiliation |
慶應義塾大学・理工学研究科・大学院生
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Research team member
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科研費研究者番号 :
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2015
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科学研究費補助金研究成果報告書
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2014
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| Abstract |
本研究は, ヘリウム4をナノ空間に閉じこめて実現される「ナノスケール・ヘリウム」における新しい量子現象を系統的に探索解明すると共に, その超流動性を自在に制御する方法を確立して, 様々な科学技術への応用研究を展開する。基礎的側面では, ナノ多孔体中4Heに見られる2つの量子相転移の発現メカニズムを完全に解明した。また, ナノポアアレイ中4Heの超流動性が, 量子渦の発生に起因する特異な減衰を示すこと, グラフェン表面上4Heが多数の2次元固体相を有することを明らかにした。応用的側面では, 超流動ジョセフソン素子の開発を目指し, ジョセフソン効果観測用デバイスと, 第二音波を用いた超流動流速測定装置の開発を行った。
In this project, we search for novel quantum phenomena in "Nanoscale Helium", which is realized by confining 4He in nano-spaces. We also pursuit possible applications of Nanoscale Helium by controlling superfluidity in nano-spaces. We have elucidated perfectly the mechanisms of two quantum phase transitions in 4He-nanoporous systems by dynamical measurements. We have discovered anomalous dissipation in superfluid 4He confined in regular nanopore array, and various two-dimensional solid phases in 4He immersed in graphene sheets. In application studies, we have developed superfluid Josephson junctions with flow measurement devices, and superfluid velocimeter utilizing the Doppler shift of second sound.
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研究種目 : 基盤研究(S)
研究期間 : 2009～2014
課題番号 : 21224010
研究分野 : 低温物理学
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