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Paul Somers wins 3D printing award

Congratulations Paul Somers, for receiving the Best Paper Award for Applications of 3D Printing, at the recent SPIE Photonics West conference.

Paul's paper, Optical lithography using stimulated emission depletion, was co-authored by Sanjoy Mukherjee, Brandon Franz, Bryan Boudouris, Xiaolong He, Liang Pan, and Xianfan Xu.


Nanoscale three-dimensional lithography has run into a resolution limit governed by the diffraction limit. By looking towards a super-resolution microscopy technique for inspiration, three-dimensional lithography technologies can make use of STimulated Emission Depletion (STED) to break the resolution limit. Using a 532nm continuous wave laser as a depletion laser, STED is shown to provide control over the effective writing volume of the laser. Applications of STED in three-dimensional lithography are discussed.