TORONTO — Synaptive Medical appointed Mark Hanrahan CFO. Hanrahan joins the surgical robotics and medical imaging company from Just Energy, where he served as chief strategy officer. BEDFORD, N.H. — Raj Chakraborty is the managing director of LASER COMPONENTS Detector Group. Chakraborty, in the role since January, took over from Dragan Grubisic. Chakraborty previously served as the group’s operations manager. He has more than 20 years of experience in the semiconductor industry. Barry Gilbert. Courtesy of Epolin. NEWARK, N.J. — Epolin, a developer and manufacturer of near-infrared absorbing dyes and thermoplastic compounds, named Barry Gilbert sales director. Gilbert has more than 20 years of experience in business development and product management.