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Nanosecond-exposure electron microscopy of laser-induced phase transformations

Publication ,  Journal Article
Bostanjoglo, O; Tornow, RP; Tornow, W
Published in: Ultramicroscopy
January 1, 1987

Flash electron microscopy with exposure times of 10-20 ns was realized by installing a beam-blanking unit and a gated image intensifier in a commercial TEM. This technique was applied to laser-induced phase transitions in amorphous Ge films. Intermediate stages of explosive crystallization were visualized for the first time, such as radial growth of crystal by propagation of a mostly flat phase boundary 100-600 ns after the laser pulse, succeeded by a helical growth after a delay of 1.5 μs. Three mechanisms responsible for the removal of material during perforation of the film, i.e. film flow, evaporation and explosive fragmentation, were also visualized. © 1987.

Duke Scholars

Published In

Ultramicroscopy

DOI

ISSN

0304-3991

Publication Date

January 1, 1987

Volume

21

Issue

4

Start / End Page

367 / 372

Related Subject Headings

  • Microscopy
  • 5104 Condensed matter physics
  • 3406 Physical chemistry
  • 3101 Biochemistry and cell biology
  • 0299 Other Physical Sciences
  • 0205 Optical Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
 

Citation

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Bostanjoglo, O., Tornow, R. P., & Tornow, W. (1987). Nanosecond-exposure electron microscopy of laser-induced phase transformations. Ultramicroscopy, 21(4), 367–372. https://doi.org/10.1016/0304-3991(87)90034-9
Bostanjoglo, O., R. P. Tornow, and W. Tornow. “Nanosecond-exposure electron microscopy of laser-induced phase transformations.” Ultramicroscopy 21, no. 4 (January 1, 1987): 367–72. https://doi.org/10.1016/0304-3991(87)90034-9.
Bostanjoglo O, Tornow RP, Tornow W. Nanosecond-exposure electron microscopy of laser-induced phase transformations. Ultramicroscopy. 1987 Jan 1;21(4):367–72.
Bostanjoglo, O., et al. “Nanosecond-exposure electron microscopy of laser-induced phase transformations.” Ultramicroscopy, vol. 21, no. 4, Jan. 1987, pp. 367–72. Scopus, doi:10.1016/0304-3991(87)90034-9.
Bostanjoglo O, Tornow RP, Tornow W. Nanosecond-exposure electron microscopy of laser-induced phase transformations. Ultramicroscopy. 1987 Jan 1;21(4):367–372.
Journal cover image

Published In

Ultramicroscopy

DOI

ISSN

0304-3991

Publication Date

January 1, 1987

Volume

21

Issue

4

Start / End Page

367 / 372

Related Subject Headings

  • Microscopy
  • 5104 Condensed matter physics
  • 3406 Physical chemistry
  • 3101 Biochemistry and cell biology
  • 0299 Other Physical Sciences
  • 0205 Optical Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics