After completing his Masters in Physics, and a research project on surface plasmon polaritons, John joined the NanoMaterials group at Southampton University. Since joining the group John has been investigating phonon population dynamics in single-walled carbon nanotubes (SWCNTs) using resonance Raman spectroscopy (RRS) and time-resolved incoherent anti-Stokes Raman spectroscopy (TRIARS) techniques, with a view to improve our understanding of reduced carrier mobility in SWCNTs under high-bias. His work has included an interpretation of the TRIARS intensity dynamics of second-order one-phonon and two-phonon (overtone) Raman features by applying the theory of double resonance (DR) Raman scattering.
John specialises in Raman spectroscopy techniques including: RRS, TRIARS, and SERS. His scientific interests include: Raman spectroscopy, single molecule electronics, low-coherence interferometry and the commercialisation of research.
T: +44 (0)23 80 599242
Raman Spectroscopy of Optical Transitions and Vibrational Energies of ~1nm HgTe Extreme Nanowires within Single walled Carbon Nanotubes
Spencer J. H., Nesbitt J. M., Trewhitt H, Kashtiban R. J., Bell G., Ivanov V. G., Faulgues E., Sloan, J.. Smith D. C.
ACS Nano 8(9):9044-52, (2014)
PRB 87, 195446, (2013)
Nano Letters, web, (2013)
Cheng, Fei, George, Kathryn, Hector, Andrew L., Jura, Marek, Kroner, Anna, Levason, William, Nesbitt, John, Reid, Gillian, Smith, David C. and Wilson, James W.
Chemistry of Materials, 23, (23), 5217-5222, (2011)