Transport and assembly of nano particles inside a t-SPL patterned nanofluidic slit
Speaker: Dr Francesca Ruggeri, IBM Zurich
- Nanopatterning creates a 2D landscape for nanoparticle trapping in solution
- Transport and manipulation of nanoparticles and biomolecules in a nanofluidic slit
- Assembly of nanoparticles with high accuracy
- Control on the orientation of asymmetric nano-objects
- Sorting of nanoparticles with nm-precision
Presentation: 30 min
Q&A: 15 min
We present a method for nanoparticle assembly based on geometry-induced electrostatic trapping inside a nanofluidic slit. One side of the slit is made of glass, whilst the other is a polymer surface patterned with t-SPL. The electrical double layer translates the topography into an effective electrostatic potential, used to trap and manipulate nano-objects within the slit such as nanospheres and biological membranes. The interaction potential increases upon reduction of the slit height until the nano-objects jump into contact with the polymer surface with an accuracy of < 10 nm to the target sites and control over their orientation.
Francesca Ruggeri is a PostDoc at IBM Research, Zurich, in the Department of Science and Technology. She holds a M.Sc. in Nanotechnology Engineering from La Sapienza, University of Rome, and completed a PhD in Physical Chemistry at the University of Zurich. Her research interests include nanofabrication, optics and biochemical interactions at the nanoscale.
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