Photothermoelectric Response of Ti₃C₂T_x MXene Confined Ion Channels.

ABSTRACT: With recent growing interest in biomimetic smart nanochannels, a biological sensory transduction in response to external stimuli has been of particular interest in the development of biomimetic nanofluidic systems. Here we demonstrate the MXene-based subnanometer ion channels that convert external temperature changes to electric signals via preferential diffusion of cations under a thermal gradient. In particular, coupled with a photothermal conversion feature of MXenes, an array of the nanoconfined Ti₃C₂T_x ion channels can capture trans-nanochannel diffusion potentials under a light-driven axial temperature gradient. The nonisothermal open-circuit potential across channels is enhanced with increasing cationic permselectivity of confined chann

SUBMITTER: Hong S 

PROVIDER: S-EPMC7467806 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature