The working principle of Single Electron Transistor (SET) is based on Coulomb blockade. For SET to work properly, the energy required to charge a spherical nanoparticle of diameter d with a single electron should be much larger than thermal energy kBT, i.e., U=e?/(4reod)>>kBT. If d=5X nm (where "X" is the last digit of your student ID. For example, if your student ID is 1234567, then use d-57nm), what is the maximum temperature T at which it can work as a SET? (Hint: dielectric constant of vacuum o=8.85x10-1F/m, Boltzmann constant kB=1.38103m-kg/(s-K)) 2). For the QCA circuit shown in Figure 2, what is the function implemented at Z? (i.e. Z=?) How many clock zones of delay are there from inputs (A and B) to output Z? (Note: The color is inverted from original QCA layout design so that the background color is white to save ink in printing.) 1.00 B 1.00 1.00 Figure 2. QCA circuit design