Enhanced energy coupling by using structured nano-wire targetsH. Habara, Y. Mishima, N. Nakanii, S. Honda, M. Katayama, L. Gremillet, L. Willingale, A. Maksimchuk, K. Krushelnick and K.A. TanakaEPJ Web of Conferences, 59 (2013) 17007DOI: https://doi.org/10.1051/epjconf/20135917007