New Type of Smart Windows Use Liquid to Switch from Clear to Reflective | Optica13 December 2017 New Type of Smart Windows Use Liquid to Switch from Clear to Reflective 13 December 2017 New Type of Smart Windows Use Liquid to Switch from Clear to Reflective Easy-to-manufacture switchable windows could improve energy efficiency in buildings and help keep cars cool WASHINGTON — Researchers have demonstrated prototype windows that switch from reflective to clear with the simple
