Year: 2019
Type: article
Abstract: We present the design, manufacturing technique, and characterization of a 3D-printed broadband graded index millimeter wave absorber. The absorber is additively manufactured using a fused filament fabrication 3D printer out of a carbon-loaded high impact polystyrene filament and is designed using a space-filling curve to optimize manufacturability using the said process. The absorber's reflectivity is measured from 63 GHz to 115 GHz and from 140 GHz to 215 GHz and is compared to electromagnetic simulations. The intended application is for terminating stray light in cosmic microwave background telescopes, and the absorber has been shown to survive cryogenic thermal cycling.
Source: Review of Scientific Instruments
DOI: 10.1063/1.5050781
Language: English
Field: Materials Science
Domain: Physical Sciences
Open Access status: green
Funder: National Science Foundation
Awards: Large Angular Scale Polarization Survey of the Cosmic Microwave Background, MRI: Development of a Sensitive Broadband Dual-Frequency Millimeter-Wavelength Polarimeter, MRI-R2: Development of a Low-Frequency Microwave Polarimeter for Large Scale Surveys, CAREER: Cosmology with the Cosmology Large Angular Scale Surveyor (CLASS)
OpenAlex ID: W2887124458