Noise in Ultrashort Elastic Membrane Nanotube

Fluctuations of the ion current in elastic nanopores are studied in a wide frequency range and a complete description of their noise characteristics is presented. The lumen of ultrashort ( 1 kHz), white noise becomes dominant, the power density of which depends linearly on the signal bandwidth and, as the length of the usNT decreases and the ionic strength increases, it is in good agreement with its representation as the sum of the Johnson–Nyquist thermal noise and the Schottky shot noise.