The propagation of non-equilibrium phonon and quasiparticle signals in bulk single crystal superconducting niobium has been investigated using superconducting tunnel junctions. Excitations generated by pulsed laser light and particle interactions were studied in 2-12 g crystals. At temperatures below 2 K the lifetimes of non-equilibrium phonons were found to be very much shorter that the theoretical bulk anharmonic decay times. Quasiparticle propagation was observed limited by impurity scattering. The proximity effect in Al thin films on Nb single crystal surface was studied. Particle interactions were detected in Nb with both position and energy resolution. The possibilities for using a detector based on superconducting single crystal niobium for a dark matter search are discussed.

In the context of new π-donor molecules, extended tetrathiafulvalenes have been widely studies for their use as components of electronically conductive charge-transfer materials. In contrast with the planar π -systems, we have focused our attention on extended tetrathiafulvalenes containing a conjugated anthracenyl spacer (anthracenediylidene derivatives). These TTF derivatives adopt a saddle-shaped conformation in the neutral state and a drastic change of conformation occurs upon oxidation to the dication species. Our main objective was to investigate the molecular and supramolecular architecture of these compounds. At the molecular scale, we synthesised cyclophanes by bridging the preformed anthracene tetrathiafulvalene system and studied their redox properties and crystal packing. We developed the chemistry of anthracenediylidene derivatives in order to direct the supramolecular architecture by secondary interactions (hydrogen-bonding, π-π stacking). Finally, we also investigated the incorporation of anthracenediylidene units inside dendritic structures in order to study the highly charged species formed upon oxidation.

Thesis (Ph.D.)--McMaster University (Canada), 1990. / Source: Dissertation Abstracts International, Volume: 53-01, Section: B, page: 0374. Supervisor: J. P. Carbotte.

Thesis (Ph.D.) -- McMaster University, 1997. / Includes bibliographical references (leaves l05-110). Also available via World Wide Web.

Thesis (Ph.D.) -- McMaster University, 1997. / Includes bibliographical references [p. 133-146) Also available via World Wide Web.

Thesis (Master)--İzmir Institute of Technology, İzmir, 2006. / Includes bibliographical references (leaves. 89-91).

Thesis (Ph.D.)--Physics, Georgia Institute of Technology, 2008. / Committee Chair: Alexei Marchenkov; Committee Member: Bruno Frazier; Committee Member: Dragomir Davidovic; Committee Member: Markus Kindermann; Committee Member: Phillip First

Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1993. / Vita. Abstract. Includes bibliographical references (leaves 81-83). Also available via the Internet.

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