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Faculty Profiles

Orlin Velev

Nano Research Area

  • Health & Bio-Nanotechnology
  • Nano-Electronics

Research Summary

My research group is focused on fundamental and exploratory projects in colloids, microfluidics, and nanoscience.  The major thrust is the controlled on-chip assembly of colloidal particles into advanced materials and microscopic functional structures.  Our research could underlie future technologies for fabrication of chemical and biological sensors, photonic devices, microscale materials synthesis, bioelectronic interfacing, and rapid fabrication of nanostructured coatings and materials.

The group’s primary research areas are:

  • Electrically functional microdevices by interfacing colloidal assemblies with electronic chips.  One effective tool for nanoparticle assembly is the AC field-induced mobility and interactions of particles, dielectrophoresis (DEP). Our group pioneered areas of DEP on-chip assembly and its use in microfluidics and biosensing.
  • Microstructured and photonic materials based on colloidal crystals and/or biocolloids.  We are the first to use colloidal crystals as templates for preparation of "inverse opals," one of the most studied photonic materials. We used this method to obtain a new material - nanostructured porous gold. These metallic nanostructures have unique optical and photonic properties and hold promise for advanced applications in electro-optics, microelectronics, or catalysis.
  • Environmentally-friendly nanomaterials and nanostructures.  We are studying the potential of liquid CO2 as a medium for assembly of colloidal crystals and related nanostructured and photonic materials. Applications include processes for fabrication of nanofunctional materials that are oriented to high technologies and environmentally benign.

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