James Northup was named executive vice president, corporate business development, at Zygo Corp., a Middlefield, Conn., supplier of optical metrology instruments, precision optics and electro-optics design and manufacturing services for semiconductor equipment and industrial markets, the company announced today. Northup was formerly chief operating officer at Toppan Photomasks Inc. (formerly DuPont Photomasks Inc.), and was previously president of Photronics Inc.