Particle accelerators are usually massive in size but a new method discovered by researchers from Stanford University has made an accelerator shorter than the human hair. Researchers wanted to develop accelerator technology on a smaller scale to make it a more accessible research tool. They used the inverse design algorithms to produce the energy pattern from the infrared radiation emitters. The newly invented “accelerator on a chip” is smaller than a human hair and can easily fit on the head of a pin. Researchers believe that a chip-sized electron accelerator might be able to transmit radiation into a tumor surgically rather than through the skin.