Essays about: "doughnuts"
Found 1 essay containing the word doughnuts.
University essay from Uppsala universitet/Materialteori
Abstract : Electron vortex beams (EVBs) are electron beams with a doughnut-like intensity profile, carrying orbital angular momentum due to their helical phase shift distribution. When employed in an electron microscope, they are expected to be efficient for the detection of magnetic signals. READ MORE