Thermoelectrics isn't a new field, but it's mostly been hampered by expensive materials that can cost up to $1,000 per kilogram. But Corey Hewitt, a graduate student at Wake Forest and member of the Power Felt team, says the new design could drastically bring down the price. For something small, like a cellphone case, the addition of Power Felt could cost as little as a dollar extra. And there are all kinds of possible applications, from apparel to car seats.