Circuit Elements at optical Frequencies: Nanoinductors, Nanocapacitors and
Nanoresistors
Presented By: Maryam Liaqat
Coupled Nanocircuits for Multilayer Spheres
Within the quasi-static Limits there are two case for coupled nano-circuits. Depending on the external excitation.
Case I : Series Resonant L-C Circuit
Case II : Parallel Resonant L-C Circuit
In fused circuit Fringes always remain parallel to the parallel/series naocircuits.
Series Resonant L-C Circuit Electric field is perpendicular
to sphere interface , the lumped elements are in series
Same current flowing through the both/all components
Potential Difference at the surface is zero
Displacement current flows within the circuit
Equivalent local impedance of cylinder seems to be zero from outside
Effective impedance is infinite Impressed current depend on
permitivity of free space Displacement current depend
on negative permittivity Energy is Stored inside the
resonant pair No current passes through the
fringe capacitance
Parallel Resonant L-C Circuit Electric field is parallel to sphere,
the lumped elements are in parallel A Potential Difference is Induced in
the sphere Total Electric Field is zero at the
surface At resonate point impedance is
infinite Net displacement current is zero As the case is considered lossless
then Imaginary part of permittivity is negligible
Voltage across all elements are same
Electric field lines are tangential to the surface of sphere
Impressed D. current flow through fringes which depends on specific value of permittivity (of outer material /background)
Optical Nanotransmission Lines
Right-Handed (RH) Transmission Lines (optical frequency )
Left-Handed (LH) Transmission Lines (IR and visible regime)
Shunt lampued element
RH-Transmission
LH-Transmission Lines
Thanks for
attention
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