More than 90 Maine high-tech firms and organizations will showcase their innovations at the Maine Technology Institute’s second annual TechWalk event in Bangor on Thursday.

The exhibition, which is free to the public, is expected to draw roughly 800 attendees, said Scott Burnett, MTI director of marketing and analytics. About 600 attended last year’s inaugural event in Portland.

Exhibitors at this year’s TechWalk, to be held at the Cross Insurance Center, will include CashStar, Fluid Imaging Technologies, Bigelow Laboratory for Ocean Sciences and 90 other companies and organizations. There are about 50 percent more exhibitors than at last year’s event, Burnett said.

The University of Maine also will have a strong presence at the event, including its centers for aquaculture research, advanced manufacturing and advanced structures and composites.

The event will kick off at noon with a luncheon and keynote address sponsored by nonprofit economic development organization Blackstone Accelerates Growth. There is a $25 fee to attend the luncheon.

The scheduled keynote speaker is venture capitalist Victor Hwang, founder and president of T2 Venture Creation, based in Portola Valley, California.

Hwang’s talk will focus on ways to improve Maine’s “innovation ecosystem.” He is the author of a recently released book titled “The Rainforest Blueprint: How to Design your own Silicon Valley.”

“I think it’s going to be a very interesting keynote,” Burnett said.

MTI plans to change the location of TechWalk each year, he said, although the only cities with venues large enough to hold the event are Portland and Bangor.

In addition to the expo and keynote speech, TechWalk 2014 will feature a series of workshops about marketing, communications, business model innovation, and commercialization of technology and research.

The expo will be open from 2 to 8 p.m., and a networking reception will be hosted by Gov. Paul LePage at 5 p.m.

Registration is required for events other than the expo. To register, visit mainetechnology.org/techwalk2014 or call 207-582-4790.