BENSENVILLE, Ill.--(BUSINESS WIRE)--Rubicon Technology, Inc. (NASDAQ:RBCN), a leading provider of sapphire substrates and products to the LED, semiconductor, and optical industries, today announced the appointment of Christine Richardson, Ph.D., as Chief Technology Officer. Dr. Richardson will take responsibility for the ongoing development of Rubicon’s technology platforms and will lead research and development activities. Dr. Richardson has over 15 years of senior technology leadership experi