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4 papers · 2 filters
Observation of tightly bound trions in monolayer MoS2
Kin Fai Mak, Keliang He, Changgu Lee +4
Two-dimensional (2D) atomic crystals, such as graphene and transition-metal dichalcogenides, have emerged as a new class of materials with remarkable physical properties. In contra…
Ferroelectricity Driven by Twisting of Silicate Tetrahedral Chains
Hiroki Taniguchi, Akihide Kuwabara, Jungeun Kim +10
Conventional perovskite-type ferroelectrics are based on octahedral units of oxygen, and often comprise toxic Pb to achieve robust ferroelectricity. Here, we report the ferroelectr…
Graphene induced tunability of the surface plasmon resonance
Jing Niu, Young Jun Shin, Youngbin Lee +2
Tunability of the surface plasmon resonance wavelength is demonstrated by varying the thickness of Al2O3 spacer layer inserted between the graphene and nanoparticles. By varying th…
Ultrafast carrier phonon dynamics in NaOH-reacted graphite oxide film
Dongwook Lee, Xingquan Zou, Xi Zhu +6
NaOH-reacted graphite oxide film was prepared by decomposing epoxy groups in graphite oxide into hydroxyl and -ONa groups with NaOH solution. Ultrafast carrier dynamics of the samp…