It also emits body heat at a wavelength that passes through what scientists call the atmospheric window, a natural gap where heat escapes to space with no energy required.

Plus the special, uh, wavelength emitted from its body from 8 to 30 micron wavelength, and this wavelength can just pass through our atmosphere so that it can just create a cooling performance without any energy input.

Zhu replicated the heat-emitting process of the ant with engineered nanoparticles embedded in paint and windows.

So we did a case in Hong Kong, uh, in a bus.

That's this, uh, double-deck bus.

Then we applied the material on the, uh, roof of the b- of the bus and also the film to the bus windows.

Then they can save seven liter of the diesel for every round trip between the Hong Kong airport and the city downtown.