Beware with the breakdown current. At some point, there will be a lightning putting the metal structures under equilibrium again. You have to somehow insulate the elements until a given moment when you, then, will remove the insulation. Or you can put them separated and then slowly move them together, although I'd consider this a rather unstable proces.
2013/8/21 Axil Axil <[email protected]> > The Ni/H reactor design allows for a huge amplification factor produced by > many nanoparticles in chains. > > > > > > An important problem in ’plasmonics’ is the question of how micro/nano > particles should be designed and arranged with respect to each other to > produce the strongest possible field enhancement. > > > > One possible solution to this problem is the configuration of a > self-similar chain of particles with decreasing diameters > > > > [K. Li, M. I. Stockman, and D. J. Bergman.Self-similar chain of metal > nanospheres as an efficient nanolens.Phys. Rev. Lett. 91, 227402 (2003). > > > > > http://www.phy-astr.gsu.edu/stockman/data/PRL_91_27402_2003_Stockman_Nanolens.pdf] > > > > > Self-similarity requires that radii Ri and the distances di,i+1 of the > spheres i and i+1 are connected by the simple relations Ri+1 = ·Ri and > di+1,i+2 = ·kdi,i+1 where · k<< 1. The last condition ensures that the > field of a given nanoparticle is only a weak perturbation of the previous, > bigger particle. The self-similarity is not a necessary condition but it > allows for an elegant notation. All particles are considered in the > electrostatic limit. > > > > Now, if each of the particles enhances its driving field by a certain > factor (a), then the cumulative effect of the chain of particles is a field > enhancement on the order of (a)n where n is the number of particles. In > other words, the enhanced field of the largest particle acts as an > excitation field for the next smaller particle. The resulting enhanced > field of this second particle then acts as the excitation field for the > next smaller particle, and so on. For the system depicted in Fig. 12.23 of > > > > Chapter 12 > > Surface plasmons > > > > > http://www.optics.rochester.edu/workgroups/novotny/courses/OPT463/plasmonss.pdf > > > > > > assuming a moderate a » 10, leads to a total field enhancement of »1000 > (every factor of 10 particles produces an enhancement of 1000 or 10 to the > power of 3). As we will see in the following section, field enhancements of > at least 1000 are necessary to observe the Raman scattering of single > molecules adsorbed onto rough metal structures. > > > > Assume the largest particle is 7*10^^-6 (7 microns) and the smallest is a > nanometer or 10^^-9 , then the size difference is 1.4 * 10^^4 > > > > There is a particle size amplification of about 10000. If there are > 10,000 nanoparticles in the chain, there will be 1000 to the power of 3 > particle enhancement factor or 1,000,000,000. > > > > That is a total enhancement factor of 10,000,000,000,000. Add the > million volt nanowire enhancement in with the particle number/size > enhancement and you get a big number. > > > > > > > -- Daniel Rocha - RJ [email protected]
