Micro/nano‑reconfigurable robots for intelligent carbon management in confined‑space life‑support systems
As CO2 accumulates in crewed spacecraft, submarines and disaster shelters, life-support systems demand sorbents that combine high capacity, ultralow regeneration energy and compact form factors. Now, researchers from Guangxi University, led by Prof. Hui He, unveil micro/nano-reconfigurable robots (MNRM) that harvest sunlight to capture 6.19 mmol g-1 CO2 and release it at only 55 °C—while actively swimming to prevent overheating. In a sealed-mouse model the robots prolonged survival by 54.61 %, offering a self-powered route to carbon-metabolism control in extreme environments.
Why MNRM Matters
Lowest-Ever Regeneration: 55 °C beats all amino-based sorbents by ≥25 °C, cutting thermal energy 33 %.
Solar-Only Operation: 0.7 sun (700 W m-2) suffices; magnetic micro-reconfiguration averts hot-spots.
Life-Support Verified: CO2 inside chamber kept below 2 %; mouse lungs remain grade-1 intact.
Innovative Design & Features
School-of-Fish Motion: Super-paramagnetic Fe3O4 NPs enable remote magnetic steering for uniform light harvesting.
Thermo-Molecular Switch: Pluronic F127 cross-linked to cellulose nano-fibers curls at 45–55 °C, raising amino surface potential and blunting urea-forming side reactions.
GO Heat Bridge: Graphene-oxide layer spreads photothermal heat (78 °C under 1 sun) across 3-D robot framework.
Applications & Outlook
10-Cycle Durability: 94 % capacity retained under 55 °C hydrothermal or 91.6 % under 0.7-sun light.
Antimicrobial Bonus: >98 % inhibition of E. coli, S. aureus and A. flavus—vital for long-term storage.
Scale-up Path: Team is integrating robots into modular cartridges for next-generation extravehicular-activity backpacks and mini-sub life-support loops.
This work translates nano-reconfiguration into a ready-to-deploy robotic carbon metabolism, promising energy-frugal CO2 control for both space exploration and terrestrial emergency shelters. Stay tuned for more advances from Prof. Hui He’s group!
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