Curtis Taylor et al 2008 Nanotechnology 19 015301 doi:10.1088/0957-4484/19/01/015301
Curtis Taylor1, Euclydes Marega2, Eric A Stach3, Gregory Salamo4, Lindsay Hussey5, Martin Muñoz5 and Ajay Malshe6
Show affiliationsWe demonstrate that nanomechanically stamped substrates can be used as templates to pattern and direct the self-assembly of epitaxial quantum structures such as quantum dots. Diamond probe tips are used to indent or stamp the surface of GaAs(100) to create nanoscale volumes of dislocation-mediated deformation, which alter the growth surface strain. These strained sites act to bias nucleation, hence allowing for selective growth of InAs quantum dots. Patterns of quantum dots are observed to form above the underlying nanostamped template. The strain state of the patterned structures is characterized by micro-Raman spectroscopy. The potential of using nanoprobe tips as a quantum dot nanofabrication technology are discussed.
Surfaces, interfaces and thin films
Issue 1 (9 January 2008)
Received 2 July 2007, in final form 12 September 2007
Published 29 November 2007
Curtis Taylor et al 2008 Nanotechnology 19 015301
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