The city's fire department operates out of three (3) different fire stations. Each station is manned by at least two (2) firefighter-EMT's; and there are two (2) firefighter-paramedics assigned to each shift.
One of these materials - silicon - is making it possible for you to read these words right now! That's because silicon is the essential material in an electronic computer chip. Semiconductor means a material can conduct electricity with a bit of help in the form of added impurities..
A commonly used thermoelectric material in such applications is bismuth telluride (Bi 2Te 3). Thermoelectric materials are used in thermoelectric systems for cooling or heating in niche applications, and are being studied as a way to regenerate electricity from waste heat at electric power plants.