Discussion of recent experiments on 1/ƒ noise

Atomic Layer Deposition to Fine-Tune the Surface Properties and Diameters of Fabricated Nanopores

“…The spectral density of the 1/f noise was proportional to the square of the applied voltage bias across the nanopore ( Figure 2b), as expected from Hooge's model. 16 Although there was no apparent correlation between the 1/f noise level and the cation selectivity of the nanopore, the fact that 1/f noise has been attributed to charge fluctuations in other systems [17][18][19] reinforced our misgivings about the unknown and possibly variable state of our nanopore surface. Our nanopores had been fabricated by the interactions of a Si 3 N 4 membrane with an unknown number of Ga + ions during FIB drilling, an unknown number of Ar + ions during ion beam sculpting, and, for pores verified by TEM imaging, an uncertain exposure to an electron beam.…”

“…Such noise is observed in many biological and physical systems and is commonly referred to as 1/f noise. 15,16 This noise, of unidentified origin, made it difficult or impossible to detect the current blockages due to true DNA translocation. The spectral density of the 1/f noise was proportional to the square of the applied voltage bias across the nanopore ( Figure 2b), as expected from Hooge's model.…”

Flicker noise of hot electrons in silicon at T = 78 K

“…Based on Hooge's view Kicinpenning gave a descripExperimental evidence in favour of Hooge's interpretion of 1/f noise of thermal carriers in such a device tation is considerable and is still growing, leading to taking space charge into account, which was subsean interpretation in terms of mobility fluctuations quently vindicated by experiments on silicon diodes [3,4]. The present paper gives the first experimental [5].…”

Transport in disordered graphene nanoribbons

“…11. Due to the presence of an exponentially broad distribution of the tunneling rates in the hopping transport, the experimentally observed Hooge relation 21 between the low-frequency current noise and the dc current, I…”