Boston University

Optical Characterization and Nanophotonics Laboratory








Graphene Spectroscopy

Members: Jason Woodrow Christopher, Yan Li, Zhujie Liu, Anna K. Swan, Mounika Vutukuru, Xuanye Wang


Alumni: Samir Ahmed, Svetlana Anissimova, Chelsea Lynn Bartram, Keith Mathew George, Bennett B. Goldberg, William Hubbard, Eeshan Kabir, Alexander Luke Kitt, Marc Mcguigan, Constanze Metzger, Lina Necib, David Henry Newby, George Woodman Pratt, Tadeusz Janusz Pudlik, Sebastian Christoph Remi, Betsy Riley, Graham Roth, Renfei Sun, Claire Kathryn Thomas, Kimberly Venta, Andrea Welsh, Alexander Noble Wynn, Yan Yin, Andrew Ziegler


Collaborators: Gorkem Soyumer


Graphene is a thin, monoatomic layer of graphite. Despite the fact that it is produced virtually every time a pencil is used, it was first fabricated on silicon oxide substrates in 2004. Graphene shows remarkable electronic properties. Its valence and conduction bands touch, which makes graphene a zero gap metal or semiconductor, depending on its doping level. Around the Dirac point, the point in momentum space where the bands touch, the electronic dispersion relation is linear in momentum, mimicking the behavior of mass-less relativistic particles such as photons. Therefore graphene is an exciting condensed matter model system for relativistic physics. During the last four years, a quickly growing number of physicists has been conducting research on the electronic and optical properties of graphene. In our lab, spatially resolved Raman spectroscopy on mono- and bilayer graphene samples in low temperatures is carried out. Electrical transport measurements on gated samples are also under investigation.

Fig. 1

Fig. 1 shows a confocal reflectivity scan of a graphene sample. In the white regions, the graphene sheet is adhered to the bottom of 20 nm deep etched depressions in the silicon dioxide sample.


Kavli Institute of Theoretical Physics: Workshop about the "Electronic Properties of Graphene" from January 8-19 2007. Podcasts, audio and video files and slides of the speakers.


X. Wang, J. W. Christopher, and A. K. Swan, "2D Raman band splitting in graphene: Charge screening and lifting of the K-point Kohn anomaly," Scientific Reports, Vol. 7, 19 October 2017, pp. 13539

J. W. Christopher, B. B. Goldberg, and A. K. Swan, "Long tailed trions in monolayer MoS2: Temperature dependent asymmetry and resulting red-shift of trion photoluminescence spectra," Scientific Reports, Vol. 7, 25 October 2017, pp. 14062

X. Wang, K. Tantiwanichapan, J. W. Christopher, R. Paiella, and A. K. Swan, "Uniaxial Strain Redistribution in Corrugated Graphene: Clamping, Sliding, Friction, and 2D Band Splitting," Nano Letters, Vol. 15, July 2015, pp. 5969-5975

K. Tantiwanichapan, X. Wang, A. K. Swan, and R. Paiella, "Graphene on nanoscale gratings for the generation of terahertz Smith-Purcell radiation," Applied Physics Letters, Vol. 105, No. 24, 15 December 2014, pp. 241102

J. Yang, E. Ziade, C. Maragliano, R. Crowder, X. Wang, M. Stefancich, M. Chiesa, A. K. Swan, and A. J. Schmidt, "Thermal conductance imaging of graphene contacts," Journal of Applied Physics, Vol. 116, No. 2, 14 July 2014, pp. 023515

A. L. Kitt, "Manipulating graphene's lattice to create pseudovector potentials, discover anomalous friction, and measure strain dependent thermal conductivity," Ph.D. Dissertation, May 2014

A. L. Kitt, Z. Qi, S. C. Remi, H. S. Park, A. K. Swan, and B. B. Goldberg, "How Graphene Slides: Measurement and Theory of Strain-Dependent Frictional Forces between graphene and SiO2," Nano Letters, Vol. 13, 2013, pp. 2605

A. L. Kitt, V. M. Pereira, A. K. Swan, and B. B. Goldberg, "The correct solution for (in plane) strain-induced pseudo vector potentials in graphene," APS March Meeting, March 2012

A. L. Kitt, V. M. Pereira, A. K. Swan, and B. B. Goldberg, "Lattice-corrected strain-induced vector potentials in graphene," Physical Review B, Vol. 85, No. 115432, 1 March 2012

A. L. Kitt, V. M. Pereira, A. K. Swan, and B. B. Goldberg, "Corrections to Pseudo Vector Potentials and their effect on Pseudo Magnetic Fields," Boston Area CarbOn Nanoscience, February 2012

J. Suk, A. L. Kitt, C. Magnuson, Y. Hao, S. Ahmed, J. An, A. K. Swan, B. B. Goldberg, and R. Ruoff, "Transfer of CVD-Grown Monolayer Graphene onto Arbitrary Substrates," Acs Nano, Vol. 5, No. 9, 1 August 2011, pp. 6916-24

C. Metzger, S. C. Remi, M. Liu, S. V. Kusminskiy, A. H. Castro-Neto, A. K. Swan, and B. B. Goldberg, "Biaxial Strain in Graphene Adhered to Shallow Depressions," Nano Letters, Vol. 10, No. 1, 2010, pp. 6-10

S. C. Remi, C. Metzger, M. Liu, W. Hubbard, C. K. Thomas, A. K. Swan, and B. B. Goldberg, "Micro Raman studies of 1st and 2nd order Raman scattering of Graphene ," APS March meeting 2008, March 2008

S. C. Remi, W. Hubbard, M. Liu, A. K. Swan, and B. B. Goldberg, "Voltage Controlled Raman Spectroscopy of Graphene," Boston University Science and Engineering Day, 2008, 2008

S. C. Remi, B. B. Goldberg, and A. K. Swan, "Properties and applications of Graphene based sensors," Gordon CenSSIS Research and Industry Collaboration Conference 2008, 2008

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