IBM announced on Wednesday it will invest $3 billion over the next five years in chip research and development in hopes of finding a game-changing breakthrough that can help revive its slumping hardware unit. IBM announced the plan a week before its widely anticipated second quarter earnings. Last quarter, sales in its hardware sector plunged 23 percent from a year earlier and the company posted its lowest quarterly revenue in five years. IBM hopes to find ways to scale and shrink silicon chips to make them more efficient, and research new materials to use in making chips, such as carbon nanotubes, which are more stable than silicon and are also heat resistant and can provide faster connections. "The message to our investors is that we are committed to this space, we believe there is great innovation possible that will be necessary in world of big data analytics, said Tom Rosamilia, senior vice president of IBM's Systems and Technology Group. "These are essential i