Nanotech NYC
http://www.nanotechnyc.com/The small world in the big city
Nanotech NYC is an organization aimed at fostering the growth and advancement of the nanotechnology and nanoscience communities in the greater New York City area. The site is populated with a host of information, including listings of researchers, companies, facilities, resources, programs and events
Angel list: https://angel.co/company/nanotech-nyc-1
Member count: 1-10