title: Directed self-assembly of quantum structures by nanomechanical stamping using probe tips.
abstract: We 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.
authors: Department of Mechanical Engineering, Virginia Commonwealth University, Richmond, VA 23284, USA.
authors: Curtis
authors: C
authors: Taylor
authors: Euclydes
authors: E
authors: Marega
authors: Eric A
authors: EA
authors: Stach
authors: Gregory
authors: G
authors: Salamo
authors: Lindsay
authors: L
authors: Hussey
authors: Martin
authors: M
authors: Muñoz
authors: Ajay
authors: A
authors: Malshe