Solar Power at Night

Here's a link to a news release about solar nanoantenna arrays that are flexible and can be used to capture infrared rays which the earth continues to generate at night.

https://inlportal.inl.gov/portal/server.pt?open=514&objID=1555&...

The nanoantennas' ability to absorb infrared radiation makes them promising cooling devices. Since objects give off heat as infrared rays, the nanoantennas could collect those rays and re-emit the energy at harmless wavelengths. Such a system could cool down buildings and computers without the external power source required by air-conditioners and fans.