3D visualization of microwave electric and magnetic fields by using a metasurface-based indicator
SCIENTIFIC REPORTS(2022)
Abstract
Visualizations of the microwave electric and magnetic near-field distributions of radio-frequency (RF) filters were performed using the technique of thermoelastic optical indicator microscopy (TEOIM). New optical indicators based on periodic dielectric-metal structures were designed for electric field visualization. Depending on the structure orientation, such metasurface-based indicators allow separately visualization of the E x and E y components of the in-plane electric field. Numerical simulations were conducted to examine the working principle of the designed indicator structures, and the results were compared to the experimental, showing good agreement. In addition, the 3D visualization of the microwave near-field distribution was built, to show the field intensity and distribution dependencies on the distance from the RF filter.
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Key words
Characterization and analytical techniques,Imaging techniques,Metals and alloys,Microscopy,Nanoscale materials,Surface patterning,Science,Humanities and Social Sciences,multidisciplinary
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