IUVSTA 15th International Vacuum Congress (IVC-15), AVS 48th International Symposium (AVS-48), 11th International Conference on Solid Surfaces (ICSS-11)
    Semiconductors Tuesday Sessions
       Session SC+SS-TuA

Paper SC+SS-TuA1
Nanoparticles for Fabrication of Zero- and One-dimensional Quantum Objects

Tuesday, October 30, 2001, 2:00 pm, Room 122

Session: Semiconductor Nanostructures and Processing
Presenter: L. Samuelson, Lund University, Sweden
Authors: L. Samuelson, Lund University, Sweden
M. Bjork, Lund University, Sweden
K. Deppert, Lund University, Sweden
J. Ohlsson, Lund University, Sweden
M.H. Magnusson, Lund University, Sweden
A. Persson, Lund University, Sweden
C. Thelander, Lund University, Sweden
R. Wallenberg, Lund University, Sweden
Correspondent: Click to Email
Quantum dots and quantum wires are of great interest for their possible use in quantum devices, such as single-electron transistors. In many cases these quantum objects are fabricated using different forms of self-organized epitaxial growth. We will report the use of aerosol techniques for fabrication of nanoparticles which are used as building blocks for quantum devices and which also allow us to controllably grow semiconducting, III-V, nanowhiskers. We will first describe our method for controlled fabrication of crystalline nanoparticles of metalli c and semiconducting nanoparticles. Then we will turn to description of the way we grow nanowhiskers or nanoneedles using size-controlled nanoparticles as catalytic seeds which control the dimension and the location of the nanowhiskers. Transmission electron microscope characterization of chemical and structural properties of nanoparticles and nanowhiskers will be presented. Finally we will discuss electrical data from quantum devices obtained via nanomanipulation of nanoparticles and nanowhiskers, a technique that has allowed ohmic electrical contacts as well as tunnel-injecting contacts to be formed to these quantum objects.