NTRAF section 2 and section 3.5 / Proof of conceptWhat TRL 3 meansActive research and development is initiated. Work moves beyond the paper phase to experimental work; laboratory studies validate predictions.Criteria reviewers look forPredictions are validated by experiments or analysis.Performance metrics are defined.Individual components have been tested at lab scale.Evidence examplesPoC experiment reportSimulation resultsLab test dataNext actionAssemble components and validate basic functionality in a lab environment. TRL 2Assess your TRLTRL 4