Questions on "Nanotechnology":
Question 1: Indium (In) is an essential element for making ITO thin films, which are representative of materials for transparent electrodes. However, since it is said to be on the edge of running out, it is being actively recycled from electronic devices. So, what is the recycling rate of indium? Investigate and outline the results. (Main Question)
Question 2: Research organic light-emitting diode (OLED), also known as a "bendable" display, which is a typical example of an electronic product that uses organic thin films, and briefly describe what kind of nanotechnology is used.