VPHGs for WEAVE: design, manufacturing and characterisation by Bianco, A, Pariani, G, Aliverti, M, Zanutta, A, Arns, J, Pragt, J, Stuik, R, Middleton, K, Tosh, I, Dalton, G, Trager, S, Abrams, DC, Aguerri, JAL, Bonifacio, P, Vallenari, A, Carrasco, E