"Undefined material property 'sigma' required by..." "unknown variable nd"

Sandipan Rakshit Masters in Applied Electronics and Instrumentation Engineering

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I am currently trying to use Graphene for designing piezoresistive pressure sensor and as I saw in many of the previous threads the 'sigma0' , 'nd' terms pose a problem again..I could not understand how to properly solve this problem. The piezoresistive matrix segment turns yellow. Do I need to look these values up or do I need to do something else? Help.



0 Replies Last Post Nov 13, 2024, 5:03 a.m. EST
COMSOL Moderator

Hello Sandipan Rakshit

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