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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 also associated with the U.S. Department of Energy's Ames Laboratory.

We are dedicated to exploring nanoscale light-matter interactions in varieties of novel materials including graphene, two-dimensional 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 include nano-optical imaging and spectroscopy from far-infrared to visible, 2D material fabrications and characterizations, and nano-optical modeling and simulations.


We welcome motivated graduate and undergraduate students at Iowa State University to join our group. We also welcome long-term visiting students or scholars to contact us for collaborative research. We currently do not have postdoc position opening available. Please feel free to contact Dr. Zhe Fei for more information.


We acknowledge funding support from U.S. Department of Energy, Ames Laboratory, W. M. Keck foundation, and National Science Foundation.


Selected recent publications

J. Qian et al. "Nonequilibrium phonon tuning and mapping in few-layer graphene with infrared nanoscopy". Phys. Rev. B 103, 201407 (2021)

Y. Luan et al., "Tip- and plasmon-enhanced infrared nanoscopy for ultrasensitive molecular characterizations", Phys. Rev. Applied 13, 034020 (2020).

F. Hu, Z. Fei, "Recent progress on exciton polaritons in layered transition-metal dichalcogenides (invited review)", Adv. Opt. Mater. 1901003 (2019).

F. Hu et al., "Imaging propagative exciton polaritons in atomically-thin WSe2 waveguides", Phys. Rev. B 100, 121301(R) (2019) 

F. Hu et al., "Tailored Plasmons in Pentacene/Graphene Heterostructures with Interlayer Electron Transfer", Nano Lett. 19, 6058-6064 (2019) 

F. Hu et al., "Real-Space Imaging of the Tailored Plasmons in Twisted Bilayer Graphene", Phys. Rev. Lett. 119, 247402 (2017) 

F. Hu et al., "Imaging the localized plasmon resonance modes in graphene nanoribbons", Nano Lett. 17, 5423-5428 (2017) . 

F. Hu et al., "Imaging exciton-polariton transport in MoSe2 waveguides", Nature Photon. 11, 356-360 (2017) .

- Click here for the complete list of publications.