Nanoventions, a nanotechnology company that designs, develops and manufactures both optical and non-optical microstructured materials, has added James A. Mahaffey and Michael E. Knotts to its Research & Development team. Lytron Inc., a thermal solutions company, introduced its revised 2001 Thermal Management Guide. The 2001 guide provides specifications, performance data, and selection guidelines for Lytron's wide range of thermal management products. Marconi plc., a provider of advanced communications solutions, announced that it will donate $1 million in broadband switching and routing equipment, services and research funding to support Texas A&M University's virtual networking lab.