Daresbury Science and Innovation Campus has hired Smith & Smith PR after a four-way pitch.
The campus is home to more than 60 high-tech businesses, plus the Daresbury Laboratory and the National Centre for Accelerator Science.
One of the campus' businesses, Atmos Technologies, has been looking at radiation as a form of terrorist attack.
Manchester-based Smith & Smith will use social media as part of the campaign. The team will report to Mark Blackburn, marketing manager at Daresbury SIC, which is in Cheshire.
