Ultra-low radioactivity flexible printed cables Isaac J. Arnquist, Maria Laura di Vacri, Nicole Rocco, Richard Saldanha, Tyler Schlieder, Raj Patel, Jay Patil, Mario Perez and Harshad Uka EPJ Techn Instrum, 10 1 (2023) 17 Published online: 19 September 2023 DOI: 10.1140/epjti/s40485-023-00104-6