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Volumn 300, Issue 5624, 2003, Pages 1419-1421

Atomic resolution imaging of a carbon nanotube from diffraction intensities

Author keywords

[No Author keywords available]

Indexed keywords

ABERRATIONS; CRYSTALS; DIFFRACTION; ELECTRONS; IMAGING TECHNIQUES; NANOSTRUCTURED MATERIALS;

EID: 0038780636     PISSN: 00368075     EISSN: None     Source Type: Journal    
DOI: 10.1126/science.1083887     Document Type: Article
Times cited : (468)

References (25)
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    • note
    • DWNT synthesis and observation are described on Science Online.
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    • R. Bates, Optik 61, 247 (1982).
    • (1982) Optik , vol.61 , pp. 247
    • Bates, R.1
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    • S. Iijima, Nature 354, 56 (1991).
    • (1991) Nature , vol.354 , pp. 56
    • Iijima, S.1
  • 16
    • 0037037902 scopus 로고    scopus 로고
    • J. Miao et al., Phys. Rev. Lett. 89, 155502 (2002). A focused electron beam was proposed for oversampling the electron diffraction pattern in the reported computational experiment. The beam convergence then limits the smallest sampling frequency.
    • (2002) Phys. Rev. Lett. , vol.89 , pp. 155502
    • Miao, J.1
  • 17
    • 0038520945 scopus 로고    scopus 로고
    • note
    • The original pattern has a strong central peak and background from aperture scattering. We removed them by subtracting a diffraction pattern recorded without the tube. This results in an area of 60 pixels by 60 pixels with missing intensity. To fill this gap, we use the amplitude of Fourier transform of a low-resolution electron image.
  • 18
    • 0038182208 scopus 로고    scopus 로고
    • note
    • ∥) has two components, a sharp peak on a broad background. Both can be modeled as a Gaussian function. The Gaussian half width of the sharp peak is ∼ 0.05 mrad, which can be approximated as a plane wave illumination.
  • 21
    • 0038520946 scopus 로고    scopus 로고
    • note
    • exp| to monitor the convergence of phase retrieval iterations. The best fit was selected from images with the lowest R.
  • 22
    • 0037506952 scopus 로고    scopus 로고
    • note
    • In the image, one side of the DWNT is much sharper than the other. This effect comes partly from the variations in the projected potential along the wall and partly from an effect we attribute to a nonuniform illumination in the TEM.
  • 24
    • 0038520939 scopus 로고    scopus 로고
    • note
    • s = 1 mm and wavelength of 0.025 Å for the JEOL2010F microscope operated at 200 kV.
  • 25
    • 0038520947 scopus 로고    scopus 로고
    • note
    • Work on electron microscopy characterization was supported by DOE DEFG02-01ER45923 and DEFG02-91ER45439 and the TEM facility of Center for Micro-analysis of Materials at the Frederick Seitz Materials Research Laboratory. We thank J. H. Weaver, I. Robinson, S. Granick, R. Twesten, I. Petrov, R. Tsui, and H. Goronkin for discussion and encouragement.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.