High-Temp Electronics For Venus Exploration, recent advances |
High-Temp Electronics For Venus Exploration, recent advances |
Mar 13 2013, 03:36 PM
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Member Group: Members Posts: 127 Joined: 20-April 05 Member No.: 291 |
(MOD NOTE: Started a new topic for this discussion to continue. Please remember the 'no sci-fi engineering' provision of rule 1.9. Have fun!)
Also, since I'm thinking about surface operations on Venus, the state-of-the-art in high temperature electronics has advanced quite far in the past decade. Its now possible to buy off the shelf chips from vendors designed to operate at the 250-300 C range. Meanwhile basic functionality has been tested at and beyond the temperatures needed for long-term surface operations on Venus: http://www.grc.nasa.gov/WWW/SiC/ http://www.gizmag.com/extreme-silicon-carb...ctronics/16410/ http://www.grc.nasa.gov/WWW/SiC/publicatio...Contact2010.pdf Another decade or so and a long-term Venus lander could be possible with (practically) off the shelf electronics! |
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Jun 16 2016, 09:56 AM
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Newbie Group: Members Posts: 8 Joined: 5-September 08 Member No.: 4329 |
Swedish tech lab KTH is working to develop high-temperature silicon carbide electronics for ambient temperature operation at the surface of Venus. https://www.kth.se/blogs/wov/ https://www.kth.se/blogs/wov/files/2014/10/..._KAW_160304.pdf They're pretty ambitious - aiming to demonstrate digital CPUs, amplifiers, gas sensors, seismometers. From the PDF document linked above: " The project started January 2014 and has eight PhD students in the different work packages. Our present bipolar technology has been scaled to smaller transistors, and self‐aligned nickel contacts have been developed. Four new integrated circuit designs were made for different parts of the lander electronics: CMOS circuit test set, a 4‐bit microprocessor, RF transistors for the radio transceiver and a prototype pixel sensor for the imaging. Most of these have been fabricated by the PhD students in the KTH Myfab clean room, some are still in progress. Preliminary testing and modeling show operation up to 550 °C, sufficient for the Venus target. A first demonstration has been made of capacitive inertial sensing at high temperatures; gas sensors have been annealed at 500 °C for 300 h; photodiodes sensitive in the near UV range (200 to 400 nm) have been tested up to 550 °C. Power sources have been identified, and passive components like inductors have been tested to 500 °C. " |
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