Irvine Sensors Corp.: The Costa Mesa company...

Irvine Sensors Corp.: The Costa Mesa company said Tuesday that it had won an 18-month contract for $680,000 to build a three-dimensional chip stack for the Air Force. The company stacks memory chips on top of each other in a device the size of a sugar cube in order to save space in tiny electronics packages. In the contract with the Air Force’s Phillips Laboratory, the Costa Mesa-based company will demonstrate a new way to package a variety of chips in the three-dimensional stack.