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By Marina Lopes WASHINGTON (Reuters) – 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 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 IBMs Systems and Technology Group. The investment is equal to half of all IBMs research and development last year.