A small Utah company, Chamtech Operations, has created a nanoparticle mix that can sprayed on to just about anything vertical, like a tree, creating a high-powered antenna.
This spray on mix can turn a tree into an antenna or be used to extend the range of existing antennas by a factor of 100. A great example is an RFID tag which has a range of about 1.5-meters, when sprayed the range increases to 200-meters. Another example, is the use of these nanoparticles on an iPhone antenna that was put into a Faraday cage. When compared, the dBm increased a full 20 dBm from the standard antenna.
The nanoparticle mix acts like nanocapacitors and help in charging and discharging very quickly without creating any heat.