Electric and Magnetic Field Sensing with a Charged Particle Moire Deflectometer*

We report on the realization of a charged particle Moir\'{e} deflectometer and it ability to sense electric and magnetic fields. To the best of our knowledge this is the first realization of such a device. Our Moir\'{e} deflectometer is based on the classical propagation of an electron beam through a set of three identical nanofabricated gratings. This device can be used with or without collimation of the electron beam. Fields between the gratings shift the beam, resulting in a change in the total transmitted intensity. The scalability and sensitivity will be discussed as well as some of the complications.