[1] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA
[2] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA
[3] Kavli Fdn, Oxnard, CA 93030 USA
[4] Harvard Univ, Sch Med, Dept Genet, Boston, MA 02115 USA
[5] Wyss Inst Biologically Inspired Engn, Boston, MA 02115 USA
[6] Stanford Univ, Howard Hughes Med Inst, Stanford, CA 94305 USA
[7] Stanford Univ, Dept Bioengn, Stanford, CA 94305 USA
[8] Stanford Univ, Dept Psychiat, Stanford, CA 94305 USA
[9] Vet Affairs Med Ctr, Rehabil Res & Dev Serv, Providence, RI 02908 USA
[10] Brown Univ, Dept Neurosci, Brown Inst Brain Sci, Providence, RI 02912 USA
[11] Brown Univ, Sch Engn, Providence, RI 02912 USA
[12] Univ Calif San Diego, Kavli Inst Brain & Mind, La Jolla, CA 92093 USA
[13] Cornell Univ, Dept Phys, Kavli Inst Cornell Nanoscale Sci, Ithaca, NY 14850 USA
[14] CALTECH, Kavli Nanosci Inst, Pasadena, CA 91125 USA
[15] CALTECH, Dept Phys, Pasadena, CA 91125 USA
[16] CALTECH, Dept Appl Phys, Pasadena, CA 91125 USA
[17] CALTECH, Dept Bioengn, Pasadena, CA 91125 USA
[18] Salk Inst Biol Studies, Computat Neurobiol Lab, HHMI, La Jolla, CA 92037 USA
[19] Univ Calif San Diego, Div Biol Sci, La Jolla, CA 92093 USA
[20] Univ Calif Los Angeles, Dept Chem & Biochem, Calif NanoSyst Inst, Los Angeles, CA 90095 USA
[21] Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA
[22] Columbia Univ, Kavli Inst Brain Sci, Dept Biol Sci & Neurosci, HHMI, New York, NY 10027 USA