At least in Brazil, the numbers of scientific production related to nanotechnology have been in decline since 2008-2010. Are we watching the end of this wave? (See the attached links.)
http://vlab4u.info/nanotecnologias/core%20competencias/OC0-0.html
http://vlab4u.info/nanotecnologias/core%20competencias/PB9-0.html