A. Desai, Y. C. Tai, M. T. Davis, and T. D. Lee, "A MEMS Electrospray Nozzle for Mass Spectroscopy," Technical Digest, 1997 International Conference on Solid-State Sensors and Actuators (Transducers '97), Chicago, IL, Vol. 2, pp. 927-930, Jun. 16-19 (1997).