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Direct observation of single-atom defects in monolayer two-dimensional materials by using electron ptychography at 200 kV acceleration voltage.
Chen, Ying; Chou, Tzu-Chieh; Fang, Ching-Hsing; Lu, Cheng-Yi; Hsiao, Chien-Nan; Hsu, Wei-Ting; Chen, Chien-Chun.
Afiliação
  • Chen Y; Department of Engineering and System Science, National Tsing Hua University, Hsinchu, 300044, Taiwan.
  • Chou TC; Department of Physics, National Tsing Hua University, Hsinchu, 300044, Taiwan.
  • Fang CH; Department of Engineering and System Science, National Tsing Hua University, Hsinchu, 300044, Taiwan.
  • Lu CY; Department of Physics, National Tsing Hua University, Hsinchu, 300044, Taiwan.
  • Hsiao CN; Taiwan Instrument Research Institute, National Applied Research Laboratories, Hsinchu, 300092, Taiwan.
  • Hsu WT; Department of Physics, National Tsing Hua University, Hsinchu, 300044, Taiwan.
  • Chen CC; Department of Engineering and System Science, National Tsing Hua University, Hsinchu, 300044, Taiwan. ccchen0627@gmail.com.
Sci Rep ; 14(1): 277, 2024 Jan 02.
Article em En | MEDLINE | ID: mdl-38167628
ABSTRACT
Electron ptychography has emerged as a popular technology for high-resolution imaging by combining the high coherence of electron sources with the ultra-fast scanning electron coil. However, the limitations of conventional pixelated detectors, including poor dynamic range and slow data readout speeds, have posed restrictions in the past on conducting electron ptychography experiments. We used the Gatan STELA pixelated detector to capture sequential diffraction data of monolayer two-dimensional (2D) materials for ptychographic reconstruction. By using the pixelated detector and electron ptychography, we demonstrate the observation of the radiation damage at atomic resolution in Transition Metal Dichalcogenides (TMDs).

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Sci Rep Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Taiwan

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Sci Rep Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Taiwan