What are surface plasmon polaritons (SPP)? State any two technological applications of SPP.
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Explain with examples, what are Janus particles. Which synthesis methods can be used to form such particles?
Explain the difference between ballistic transport and normal (diffusive) transport in a material. Using the Landauer formula, calculate the conductance of a quantum device in which the conduction take place through three channels, each of which has a transmission coefficient .
What are triboelectric nanogenerators? Explain the different modes of their operation.
Derive the expression for the conductivity matrix in integer quantum Hall effect.
Describe the property of band inversion in a topological insulator. Hence explain why a topological insulator cannot be transformed into a normal insulator.
For an icosahedral cluster calculate the number of atoms present in its 7th shell. Find the total number of atoms in this cluster and its surface to bulk atom ratio.
Describe the detection mechanism of a virus with the use of Up-Conversion Nanoparticles (UCNPs).