Yes, presence of Nano Thermite was found at WTC dust samples taken 20 min after WTC1 fell.
https://en.wikipedia.org/wiki/Stratesec
Partly owned by Marvin Bush.
Nano thermite is a US DoD product.
Nanoaluminum, or ultra fine grain (UFG) aluminum, powders are a key component of most nano-thermitic materials. A method for producing this material is the dynamic gas-phase condensation method, pioneered by Wayne Danen and Steve Son at Los Alamos National Laboratory. A variant of the method is being used at the Indian Head Division of the Naval Surface Warfare Center.