According to the National Nanotechnology Initiative, "Nanotechnology is science, engineering, and technology conducted at the nanoscale, which is about 1 to 100 nanometers. Nanoscience and nanotechnology are the study and application of extremely small things and can be used across all the other science fields, such as chemistry, biology, physics, materials science, and engineering." -- What is Nanotechnology?
In June 2005, Bawa, et al. proposed what they felt was a more appropriate and practical definition of nanotechnology:
"The design, characterization, production, and application of structures, devices, and systems by controlled manipulation of size and shape at the nanometer scale (atomic, molecular, and macromolecular scale) that produces structures, devices, and systems with at least one novel/superior characteristic or property." [Bawa, et al., 2005, "Protecting new ideas and inventions in nanomedicine with patents," Nanomedicine: Nanotechnology, Biology and Medicine v.1(2): 150-158]
Free eBooks [PDFs] from the National Academies Press
Nano.gov -- National Nanotechnology Initiative: College, Graduate School, and Postdoctoral Opportunities
This site has a list of degree programs, including Bachelors degrees with majors, minors and concentrations; Masters degrees; and PhD programs. It also has a list of Scholarships, Fellowships, Internships, and Postdoctoral Positions for students at all stages of their educational career. Useful for locating potential research partners or research teams.
Top Ten U.S. Universities for Nanotechnology Study and Research