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Graphene-based Field Effect Transistors for Radiation Detection Objective: To develop new detection architectures for radiation detection utilizing the unique electrical properties of the recently discovered nanomaterial graphene. Field Effect Principle Graphene Chips Experimental Setup A) Sourcemeters B) Test box (lid removed) C) External shutter control D) BNC electrical bus E) Lock-in amplifier A B D E C Graphene Alpha Response Recent Publications: E. Cazalas, I. Childres, A. Majcher, O. Koybasi, Y.P. Chen, I. Jovanovic, “Alpha response of graphene-based radiation detectors”, IEEE Nuclear Science Symposium Conference, Anaheim, Ca. (2012). E. Cazalas, I. Childres, A. Majcher, O. Koybasi, Y.P. Chen, I. Jovanovic, “Direct and indirect alpha irradiation of graphene radiation detectors”, 3rd Annual Academic Research Initiative Grantees Conference, Alexandria, Va. (2012). E. Cazalas, I. Childres, A. Majcher, O. Koybasi, Y.P. Chen, I. Jovanovic, “Alpha irradiation of graphene radiation detectors”, IEEE Symposium on Radiation Measurements and Applications, Oakland, Ca. (2012). M. Foxe, E. Cazalas, H. Lamm, A. Majcher, C. Piotrowski, Isaac Childres, Amol Patil, Yong P. Chen, Igor Jovanovic, “Graphene-based neutron detectors”, 2011 IEEE Nuclear Science Symposium Conference, Valencia, Spain (2011). Edward Cazalas and Amanda Majcher