Welcome to the homepage of the ISU Nano-Optics Group !


Our group is in the Department of Physics & Astronomy at Iowa State University. We are dedicated to exploring nanoscale light-matter interactions in varieties of novel materials including graphene, two-dimensional layered materials beyond graphene, complex materials and so on. In order to beat the diffraction limit and explore optical physics of materials at the nanometer length scale, we take advantage of the advanced near-field and tip-enhanced techniques.

The main capabilities of our group will include ultra-small & ultra-fast optical imaging and spectroscopy, tip-enhanced Raman and fluorescence imaging and spectroscopy, nanoscale infrared vibrational spectroscopy and so on. We intend to cover a wide spectral range from terahertz to visible in the near future.

We sincerely welcome researchers within the campus, across the country or even around the world to contact us for potential collaborations!


Selected Publications

Z. Fei, J. J. Foley IV, W. Gannett, M. K. Liu, S. Dai, G. X. Ni, A. Zettl, M. M. Fogler, G. P. Wiederrecht, S. K. Gray, D. N. Basov. "Ultra-confined plasmonic hotspots inside graphene nanobubbles". Nano Lett. 16, 7842-7848 (2016) .

Z. Fei, M. Scott, D. J. Gosztola, J. J. Foley, J. Yan, D. G. Mandrus, H. Wen, P. Zhou, D. W. Zhang, Y. Sun, J. R. Guest, S. K. Gray, W. Bao, G. P. Wiederrecht, X. Xu. "Nano-optical imaging of WSe2 waveguide modes revealing light-exciton interactions". Phys. Rev. B (Rapid Communication), 94,081402(R) (2016). Editors' Suggestion.

Z. Fei, M. D. Goldflam, J.-S. Wu, S. Dai, M. Wagner, A. S. McLeod, M. K. Liu, K. W. Post, S. Zhu, G.C.A.M. Janssen, M. M. Fogler, D. N. Basov. "Edge and surface plasmons in graphene nanoribbons". Nano Lett. 15, 8271-8276 (2015).

Z. Fei, E. G. Iwinski, G.-X. Ni, L. M. Zhang, W. Bao, A. S. Rodin, Y. Lee, M. Wagner, M. K. Liu, S. Dai, M. D. Goldflam, M. Thiemens, F. Keilmann, C. N. Lau, A. H. Castro-Neto, M. M. Fogler, D. N. Basov. "Tunneling Plasmonics in Bilayer Graphene". Nano Lett. 15, 4973-4978 (2015).

S. Dai, Z. Fei, A. S. Rodin, W. Gannett, M. Wagner, W. Regan, A. S. McLeod, M. K. Liu, M. Thiemens, G. Dominguez, A. H. Castro-Neto, A. Zettl, F. Keilmann, M. M. Fogler, D. N. Basov. "Tunable Phonon Polaritons in Atomically Thin van der Waals Crystals of Boron Nitride." Science 343,1125-1129 (2014).

Z. Fei, A. S. Rodin, W. Gannett, S. Dai, W. Regan, M. Wagner, M. K. Kiu, A. S. McLeod, G. Dominguez, M.Thiemens, M. M. Fogler, A. H. Castro-Neto, F. Keilmann, A. Zettl, R. Hillenbrand, M. M. Fogler, D. N. Basov. "Electronic and plasmonic phenomena at graphene grain boundaries" Nature Nanotech. 8, 821-825 (2013).

Z. Fei, A. S. Rodin, G. O. Andreev, W. Bao, A. S. McLeod, M. Wagner, L. M. Zhang, Z. Zhao, G. Dominguez, M. Thiemens, M. M. Fogler, A. H. Castro-Neto, C. N. Lau, F. Keilmann, D. N. Basov. "Gate-tuning of graphene plasmons revealed by infrared nano-imaging". Nature 487, 825 (2012).

Z. Fei, G. O. Andreev, W. Bao, L. M. Zhang, A. S. McLeod, C. Wang, M. K. Stewart, Z. Zhao, G. Dominguez, M. Thiemens, M. M. Fogler, M. J. Tauber, A. H. Castro-Neto, C. N. Lau, F. Keilmann, and D. N. Basov. "Infrared Nanoscopy of Dirac Plasmons at the Graphene-SiO2 interface" Nano Lett. 11, 4701-4705 (2011).