One thing that might be big (although it would require lots of investment) is longer range wireless power transfer. The articles I’ve seen suggest that you can just leave a mobile phone in a room, it can be located and multiple antenna can set up constructive interference so that power is beamed to it from a long distance without frying everything else.
The big change this might allow is very light electric cars as they could be beamed electricity continuously from antennae set up along the roads and not need such big batteries for the same range.
One thing that might be big (although it would require lots of investment) is longer range wireless power transfer. The articles I’ve seen suggest that you can just leave a mobile phone in a room, it can be located and multiple antenna can set up constructive interference so that power is beamed to it from a long distance without frying everything else.
The big change this might allow is very light electric cars as they could be beamed electricity continuously from antennae set up along the roads and not need such big batteries for the same range.