Jaebin Choi, Adriaan J. Taal, Eric H. Pollmann, Changhyuk Lee, Kukjoo Kim, Laurent C. Moreaux, Michael L. Roukes, Kenneth L. Shepard. A 512-Pixel, 51-kHz-Frame-Rate, Dual-Shank, Lens-Less, Filter-Less Single-Photon Avalanche Diode CMOS Neural Imaging Probe. IEEE Journal of Solid-State Circuits, volume 54, pages 2957-2968, November, 2019 DOI:10.1109/JSSC.2019.2941529