Imaging nanostructures with coherent phonon pulses

Daly, B. C., Holme, N. C. R., Buma, T., Branciard, C., Norris, T. B., Tennant, D. M., Taylor, J. A., Bower, J. E. and Pau, S. (2004) Imaging nanostructures with coherent phonon pulses. Applied Physics Letters, 84 25: 5180-5182. doi:10.1063/1.1764599

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Author Daly, B. C.
Holme, N. C. R.
Buma, T.
Branciard, C.
Norris, T. B.
Tennant, D. M.
Taylor, J. A.
Bower, J. E.
Pau, S.
Title Imaging nanostructures with coherent phonon pulses
Journal name Applied Physics Letters   Check publisher's open access policy
ISSN 0003-6951
1520-8842
1077-3118
Publication date 2004-06-21
Sub-type Article (original research)
DOI 10.1063/1.1764599
Open Access Status File (Publisher version)
Volume 84
Issue 25
Start page 5180
End page 5182
Total pages 3
Place of publication College Park, United States
Publisher American Institute of Physics
Language eng
Abstract We demonstrate submicron resolution imaging using picosecond acoustic phonon pulses. High-frequency acoustic pulses are generated by impulsive thermoelastic excitation of a patterned 15-nm-thick metal film on a crystalline substrate using ultrafast optical pulses. The spatiotemporal diffracted acoustic strain field is measured on the opposite side of the substrate, and this field is used in a time-reversal algorithm to reconstruct the object. The image resolution is characterized using lithographically defined 1-micron-period Al structures on Si. Straightforward technical improvements should lead to resolution approaching 45 nm, extending the resolution of acoustic microscopy into the nanoscale regime.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Mathematics and Physics
 
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Created: Thu, 24 Mar 2011, 08:47:48 EST by Mr Cyril Branciard on behalf of Physics