https://www.rti.org/publication/applying-microfabrication-helical-vacuum-electron-devices-thz-applications-2
A new class of helical THz vacuum electron devices is under development using unconventional applications of microfabrication technology, modern computer...
electron devicesapplyingmicrofabricationhelicalvacuum
https://www.pearson.com/en-au/subject-catalog/p/electronic-devices-electron-flow-version/P200000001048/9780137556755
electronic devicesflowversion
https://www.wiley-vch.de/en/areas-interest/engineering/electrical-electronics-engineering-10ee/components-devices-10ee6/guide-to-state-of-the-art-electron-devices-978-1-118-34726-3
wiley vchelectron devicesguidestateart