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Ferroelectric 2D ice under graphene confinement.
Chin, Hao-Ting; Klimes, Jiri; Hu, I-Fan; Chen, Ding-Rui; Nguyen, Hai-Thai; Chen, Ting-Wei; Ma, Shao-Wei; Hofmann, Mario; Liang, Chi-Te; Hsieh, Ya-Ping.
Afiliación
  • Chin HT; Institute for Atomic and Molecular Science, Academia Sinica, Taipei, 10617, Taiwan.
  • Klimes J; International Graduate Program of Molecular Science and Technology, National Taiwan University, Taipei, 10617, Taiwan.
  • Hu IF; Molecular Science and Technology Program, Taiwan International Graduate Program, Academia Sinica, Taipei, 10617, Taiwan.
  • Chen DR; Department of Chemical Physics and Optics, Faculty of Mathematics and Physics, Charles University, Prague, 121 16, Czech Republic.
  • Nguyen HT; Institute for Atomic and Molecular Science, Academia Sinica, Taipei, 10617, Taiwan.
  • Chen TW; Department of Physics, National Taiwan University, Taipei, 10617, Taiwan.
  • Ma SW; Institute for Atomic and Molecular Science, Academia Sinica, Taipei, 10617, Taiwan.
  • Hofmann M; International Graduate Program of Molecular Science and Technology, National Taiwan University, Taipei, 10617, Taiwan.
  • Liang CT; Molecular Science and Technology Program, Taiwan International Graduate Program, Academia Sinica, Taipei, 10617, Taiwan.
  • Hsieh YP; Department of Physics, National Taiwan University, Taipei, 10617, Taiwan.
Nat Commun ; 12(1): 6291, 2021 Nov 01.
Article en En | MEDLINE | ID: mdl-34725367
We here report on the direct observation of ferroelectric properties of water ice in its 2D phase. Upon nanoelectromechanical confinement between two graphene layers, water forms a 2D ice phase at room temperature that exhibits a strong and permanent dipole which depends on the previously applied field, representing clear evidence for ferroelectric ordering. Characterization of this permanent polarization with respect to varying water partial pressure and temperature reveals the importance of forming a monolayer of 2D ice for ferroelectric ordering which agrees with ab-initio and molecular dynamics simulations conducted. The observed robust ferroelectric properties of 2D ice enable novel nanoelectromechanical devices that exhibit memristive properties. A unique bipolar mechanical switching behavior is observed where previous charging history controls the transition voltage between low-resistance and high-resistance state. This advance enables the realization of rugged, non-volatile, mechanical memory exhibiting switching ratios of 106, 4 bit storage capabilities and no degradation after 10,000 switching cycles.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nat Commun Asunto de la revista: BIOLOGIA / CIENCIA Año: 2021 Tipo del documento: Article País de afiliación: Taiwán Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nat Commun Asunto de la revista: BIOLOGIA / CIENCIA Año: 2021 Tipo del documento: Article País de afiliación: Taiwán Pais de publicación: Reino Unido