Electricity from nano particles

scientists have discovered a novel way to generate electricity from heat by trapping organic molecules between metal nano particles,report live science.currently about 90% of the world's electricity is generated by burning fossil fuels,which creates heat, often in the form of steam.the stem spins a turbine that drives a generator to produce electricity.but this method is indirect,and in the process,plenty of heat is wasted and its energy goes uncaptured. generating one watt of power requires about 3 watts of heat input and involves dumping into the environment the equivalent of about 2 watt of power in the form of heat. for the last 50 years ,scientists have been exploring ways to use this wasted heat.it even a fraction of the lost heat can be converted into electricity in a cost effective manner,the lead author said ,Mr. Arun Mujamdar of the university of California.