Why Nanotechnology Limitation of Shrinking Silicon

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Why Nanotechnology ?Limitation of Shrinking
Silicon

• Bottom up Approach

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RESEARCH TOPICAssembled nanostructures from
templates
Templates A pattern or gauge, such as a thin
metal plate with a cut pattern, used as a guide
in making something accurately
Ferromagnetic nanostructures
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Ferromagnetic nanorings
References
Ultra-High Density Array of Ferromagnetic
Nanorings on Macroscopic Area - Advanced
material 2004, Pg 2155. - Dr. Chien group, John
Hopkins University.
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Steps for Microfabrication
Ring like structures
Side View
Top View
Polystyrene Balls on substrate
Sputtering of Cobalt
Ar Ion Etching
Layer of Au and Cu to prevent oxidation
Advanced material 2004
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Hypothetical Approach

• Ferrromagnetic NanoRods, NanoRings and Quantum
  magnetic dots had been synthesized.

• Ferromagnetic nanodisc can be synthesized using
  simple Microfabrication Technique.
• Limitation of ferromagnetic Nanodisc (Instability
  of Vortex State)
• And Array of these magnetic rods, rings and disc
  can be used to develop a magnetic field.
• Has wide field of application.

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Application

• Actuators
• Microfluidic Mixer
• Microfluidic Separator
• Sensors (Magnetic Tag)