TY - JOUR AU - Ting Xu AU - Amit Agrawal AU - maxim abashin AU - Kenneth Chau AU - Henri Lezec C2 - Nature DA - 2013-05-22 00:05:00 LA - en M1 - 497 PB - Nature PY - 2013 TI - All-angle negative refraction and active flat lensing of ultraviolet light UR - https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=911161 ER -