Amazing stuff!
"Atom-thick layers of molybdenum disulfide are ideally suited for radiation-resistant spacecraft electronics ...
One particularly promising route forward involves highly conductive, ultra-thin materials such as molybdenum disulfide (MoS₂). Just a single layer of atoms thick—around 0.7 nanometers—the material has already proven remarkably robust against radiation-induced defects in previous laboratory studies.
In their latest work, Zhou's team subjected the material to its most rigorous test yet. They began by growing monolayer MoS₂ using it to fabricate a transistor-based, radio-frequency communications system. The circuits were then exposed to powerful bursts of gamma rays, delivering doses comparable to those experienced by electronics operating in space. ..."
From the abstract:
"Integrated circuits for communications play an enabling role when it comes to outer-space exploration thanks to their small footprint and low weight. However, owing to the severe irradiation effects of space energetic particles, the implementation of radiation-tolerant electronic circuits remains a challenge.
Here we report the observation of the space radiation effect on a satellite-based device and find that atomically thin materials are expected to accumulate minimal radiation-induced damage in principle. Accordingly, on the basis of a 4-inch wafer-scale monolayer 2D MoS2 process, we implement an atomic-layer transistor-based radiation-tolerant radio frequency (RF, 12–18 GHz) system with both transmitters and receivers for spaceborne communication.
For on-orbit experiments, the 2D communication system was successfully launched to the approximately 517 km low Earth orbit.
Notably, the system maintains a bit error rate (BER) of less than 10−8 in the transmitted data after 9 months of on-orbit operation, indicating substantial radiation tolerance and long stability.
The lifespan of the 2D communication system is predicted to be about 271 years even on the geosynchronous orbit with a much harsher radiation environment. This work showcases the unique prospects of 2D electronics for spaceborne applications."
Radiation-tolerant atomic-layer-scale RF system for spaceborne communication (no public access)
Atom-thick circuit made from radiation-resistant molybdenum disulfide
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