Analysis of single quantum-dot mobility inside 1D nanochannel devices

H.T.H. Hoang Thi Hanh, Gezina M.J. Segers-Nolten, Niels Roelof Tas, J.W. van Honschoten, Vinod Subramaniam, Michael Curt Elwenspoek

Research output: Contribution to journalArticleAcademicpeer-review

6 Citations (Scopus)

Abstract

We visualized individual quantum dots using a combination of a confining nanochannel and an ultra-sensitive microscope system, equipped with a high numerical aperture lens and a highly sensitive camera. The diffusion coefficients of the confined quantum dots were determined from the experimentally recorded trajectories according to the classical diffusion theory for Brownian motion in two dimensions. The calculated diffusion coefficients were three times smaller than those in bulk solution. These observations confirm and extend the results of Eichmann et al (2008 Langmuir 24 714–21) to smaller particle diameters and more narrow confinement. A detailed analysis shows that the observed reduction in mobility cannot be explained by conventional hydrodynamic theory.
Original languageUndefined
Pages (from-to)275201
Number of pages9
JournalNanotechnology
Volume22
Issue number27
DOIs
Publication statusPublished - 20 May 2011

Keywords

  • EWI-20216
  • IR-77497
  • METIS-277658

Cite this

Hoang Thi Hanh, H. T. H., Segers-Nolten, G. M. J., Tas, N. R., van Honschoten, J. W., Subramaniam, V., & Elwenspoek, M. C. (2011). Analysis of single quantum-dot mobility inside 1D nanochannel devices. Nanotechnology, 22(27), 275201. https://doi.org/10.1088/0957-4484/22/27/275201