Themicrogas pressuresensordesignedin this thesis can be fabricatedusing an ICcompatibleprocess, and it is composed of aheatingresistor, asensitiveelementandatestingresistor.
As it is made entirely out of circuit board, users can solder components directly to it -- such as a light dependent resistor or a microphone to make it respond to sound.
The modified N900 attaches aresistor that responds to a squeeze at four different pressure levels, and doles that out during a traditional or Skype-based call as a vibration on the other end.
Engineers had learned that aresistor, which restricts the flow of electrical current, is best made of certain materials and a capacitor, which stores electrical charge, of others.