 Those setups have been improved against spurious effects by isolating and canceling thermal transfers, vibration and electromagnetic interference, while getting better current feeds and bearings.Null tests were also conducted.In the future, Woodward plans to scale thrust levels, switching from the current piezoelectric dielectric ceramics (PZT stacks) to new high-κ dielectric nanocomposite polymers, like PMN, PMN-PT or CCTO.