Green Alga-Inspired Underwater Vision Based on Light-Driven Active Ion Transport across Janus Dual-Field Heterostructures

Natural organisms have evolved various biological ion channels to make timely responses toward different physical and/or chemical stimuli, giving guidance to construct artificial counterparts and expand the corresponding applications. They have also shown promising potential to overcome disadvantages of traditional electronic devices (e.g., energy-consuming operation and adverse humidity interference). Herein, we constructed a green alga-inspired nanofluidic system based on a Janus dual-field heterogeneous membrane (i.e., J-HM), which can function underwater as an artificial visual platform for light perception through enhanced active ion transport. The J-HM was obtained through sequentially assembled MXene and Cu-HHTP (i.e., a metal-organic framework based on the reaction between 2,3,6,7,10,11-hexahydroxytriphenylene hydrate (HHTP) and Cu2+) building units. Due to the formed temperature gradient and intramembrane electric field caused by the localized thermal excitation and efficient charge separation of J-HM under illumination, thermo-osmotic and photo-driven forces are generated for preferential cation transport from Cu-HHTP to MXene. Furthermore, unidirectional active transport can be enhanced by self-diffusion under a concentration gradient. Then, the corresponding underwater light perceptions at various light illumination conditions are explored, showing nearly a linear correlation with the light intensity. Finally, it is demonstrated that the visual platform can achieve object shape, definition, and distance recognition using a defined pixelated matrix, giving impetus to develop ionic signal transmission based sensing systems.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:18

Enthalten in:

ACS nano - 18(2024), 12 vom: 26. März, Seite 9043-9052

Sprache:

Englisch

Beteiligte Personen:

Wang, Lili [VerfasserIn]
Zhang, Yuhui [VerfasserIn]
Chen, Yupeng [VerfasserIn]
Jiang, Lei [VerfasserIn]

Links:

Volltext

Themen:

Active ion transport
Artificial visual systems
Bioinspired 2D materials
Journal Article
Light driving
Nanofluidics

Anmerkungen:

Date Revised 26.03.2024

published: Print-Electronic

Citation Status PubMed-not-MEDLINE

doi:

10.1021/acsnano.3c12874

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM369735358