Technology readiness levels (TRLs) provide a systemic approach to identifying the maturity of various technologies.12 In this framework, the nine levels are defined as: 1.Basic principles observed and reported 2.Technology concept and/or application formulated 3.Analytical and experimental critical function and/or characteristic proof of concept 4.Component and/or breadboard validation in laboratory environment 5.Component and/or breadboard validation in relevant environment 6.System/subsystem model or prototype demonstration in a relevant environment 7.System prototype demonstration in an
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