@article{829456, author = {Yuxiang Liu and Hua Xu and Felix Stief and Nikolai Zhitenev and Miao Yu}, title = {Far-field superfocusing with optical fiber based surface plasmonic lens made of nanoscale concentric annular slits}, year = {2011}, number = {19}, month = {2011-09-30 00:09:00}, publisher = {Optics Express}, url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=906679}, language = {en}, }