Abstract
We report on realization of enhanced proton (H+) conductivity in extended-nanochannels (ENCs) with the diameter of 250 nm in a micro-fluidic device, which was fabricated in combination with fused silica and LiNbO3 (LN) ferroelectric materials with a thin SiO2 film sputtered on them in advance. We detected the optimal thickness of a SiO2 film where the deposited material would not affect spontaneous polarization in a LiNbO3 material, which enables us to control the surface potential for efficient H+ transport in ENCs. Here we describe the device concept, the outer electric field effect on ENCs and demonstrate the device working principle.