The Krauss Group:
The Krauss Group:
Nanoscale Materials and Devices
Nanoscale Materials and Devices
"Where Size Matters"

Research
Research Topics:

  • Semiconductor Nanocrystals
  • Pathogen Detection
  • Label-free DNA Microarray
  • Carbon Nanotubes
  • Ultrafast Electronics
  • Single Nanotube Spectroscopy
  • Single Protein Folding
  • Single Nanoparticle Spectroscopy
  • Force Microscopy of CdSe Nanorods
  • PbSe Nanocrystal Spectroscopy
  • Semiconductor Nanocrystal Photonics
  • Electrostatic Force Microscopy of Individual CdSe Nanorods

    My research in the Krauss group investigates the charge properties of two-dimensionally quantum confined semiconductor systems. We synthesize cadmium selenide quantum rods using an arrested precipitation organometallic process. We then characterize the particles using a variety of techniques including optical absorbance and fluorescence, transmission electron microscopy and atomic force microscopy. We study the photoionization and dipolar properties of the cadmium selenide using a modified atomic force microscopy technique called electrostatic force microscopy, which measures coulombic and capacative forces between nanomaterials and a specially prepared AFM tip. The eventual goal is the correlation of the optical properties to these charge effects.

    TEM image of CdSe Quantum Rods