Recent News

10/07/19

Adieu, Matthew!

Matthew has defended hist thesis "Experimental Design under Low Signal Conditions".
He will now leave us to work as a data scientist in the investment firm TrexQuant.
Farewell, Matthew!

8/14/19

Congratulations Wenhao!

Today, Wenhao defended his thesis "Direct Optical Characterization of Carrier Transport and Structural Properties in Halide Perovskite Materials"
He will now go on to a postdoctoral position at Duke University.
Farewell, Wenhao!

6/08/18

Prof. Zia named Dean of the College

Rashid will become the University’s new Dean of the College, effective July 1. The Dean of the College is Brown’s senior undergraduate academic officer, whose responsibilities include overseeing Brown’s student-centered Open Curriculum, academic advising, classroom instruction, and international study programs as well as CareerLAB, the Sheridan Center for Teaching and Learning, and the Swearer Center for Public Service.

5/28/18

Congrats Alex!

Alexander Hirsch graduates with Honors in the Engineering-Physics Sc.B. program, and will soon join machine vision leader Cognex Corporation as a software engineer.

Publications and Preprints

2026

Refining spectroscopic calculations for trivalent lanthanide ions: A revised parametric Hamiltonian and open-source solution

J. - D. Lizarazo-Ferro, Puel, T. O., Flatté, M. E., and Zia, R., “Refining spectroscopic calculations for trivalent lanthanide ions: A revised parametric Hamiltonian and open-source solution”, Physical Review B, vol. 113, no. 7, 2026.

PDF:

Lizarazo-Ferro_PRB_2026.pdf

2025

Super-Resolution with Structured Motion

G. Litterio, Lizarazo-Ferro, J. - D., Felzenszwalb, P., and Zia, R., “Super-Resolution with Structured Motion”, in 2025 IEEE International Conference on Computational Photography (ICCP)2025 IEEE International Conference on Computational Photography (ICCP), Toronto, ON, Canada, 2025.

2019

Direct Characterization of Carrier Diffusion in Halide-Perovskite Thin Films Using Transient Photoluminescence Imaging

W. Li, Huang, M. Shao Ran, Yadavalli, S. K., Ferro, J. David Liza, Zhou, Y., Zaslavsky, A., Padture, N. P., and Zia, R., “Direct Characterization of Carrier Diffusion in Halide-Perovskite Thin Films Using Transient Photoluminescence Imaging”, ACS Photonics, vol. 6, no. 10, pp. 2375 - 2380, 2019.

PDF:

acsphotonics.9b00778.pdf

2018

Probing the Combined Electromagnetic Local Density of Optical States with Quantum Emitters Supporting Strong Electric and Magnetic Transitions

D. Li, Karaveli, S., Cueff, S., Li, W., and Zia, R., “Probing the Combined Electromagnetic Local Density of Optical States with Quantum Emitters Supporting Strong Electric and Magnetic Transitions”, Physical Review Letters, vol. 121, no. 22, 2018.

PDF:

Li_PRL_2018.pdf

Subgrain Special Boundaries in Halide Perovskite Thin Films Restrict Carrier Diffusion

W. Li, Yadavalli, S. K., Lizarazo-Ferro, D., Chen, M., Zhou, Y., Padture, N. P., and Zia, R., “Subgrain Special Boundaries in Halide Perovskite Thin Films Restrict Carrier Diffusion”, ACS Energy Letters, 2018.

2015

Dielectric metasurfaces: Transparent design

R. Zia, “Dielectric metasurfaces: Transparent design”, Nature Nanotechnology, 2015.

Dynamic control of light emission faster than the lifetime limit using VO2 phase-change

S. Cueff, Li, D., Zhou, Y., Wong, F. J., Kurvits, J. A., Ramanathan, S., and Zia, R., “Dynamic control of light emission faster than the lifetime limit using VO2 phase-change”, Nature Communications, vol. 6, p. 8636, 2015.

PDF:

Cueff_NatureCommunications_2015.pdf

Comparative analysis of imaging configurations and objectives for Fourier microscopy

J. A. Kurvits, Jiang, M., and Zia, R., “Comparative analysis of imaging configurations and objectives for Fourier microscopy”, Journal of the Optical Society of America A, vol. 32, no. 11, p. 2082, 2015.

PDF:

Kurvits_JOSSA_2015.pdf

Reusable Inorganic Templates for Electrostatic Self-Assembly of Individual Quantum Dots, Nanodiamonds, and Lanthanide-Doped Nanoparticles

M. Jiang, Kurvits, J. A., Lu, Y., Nurmikko, A. V., and Zia, R., “Reusable Inorganic Templates for Electrostatic Self-Assembly of Individual Quantum Dots, Nanodiamonds, and Lanthanide-Doped Nanoparticles”, Nano Letters, vol. 15, no. 8, pp. 5010 - 5016, 2015.

2014

Magnetic dipole emission of Dy3+:Y2O3 and Tm3+:Y2O3 at near-infrared wavelengths

C. M. Dodson, Kurvits, J. A., Li, D., Jiang, M., and Zia, R., “Magnetic dipole emission of Dy³⁺:Y₂O₃ and Tm³⁺:Y₂O₃ at near-infrared wavelengths”, Optical Materials Express, vol. 4, no. 11, p. 2441, 2014.

PDF:

Dodson_OptMatEx_2015.pdf

Wide-Angle Energy-Momentum Spectroscopy

C. M. Dodson, Kurvits, J. A., Li, D., and Zia, R., “Wide-Angle Energy-Momentum Spectroscopy”, Opt. Lett., vol. 39, pp. 3927–3930, 2014.

PDF:

Dodson_OL_2014.pdf

Quantifying and Controlling the Magnetic Dipole Contribution to 1.5 μm Light Emission in Erbium-Doped Yttrium Oxide

D. Li, Jiang, M., Cueff, S., Dodson, C. M., Karaveli, S., and Zia, R., “Quantifying and Controlling the Magnetic Dipole Contribution to 1.5 μm Light Emission in Erbium-Doped Yttrium Oxide”, Phys. Rev. B, vol. 89, p. 161409, 2014.

PDF:

Li_PRB_2014.pdf

2013

Electroluminescence efficiencies of erbium in silicon-based hosts

S. Cueff, Ramírez, J. Manel, Kurvits, J. A., Berencén, Y., Zia, R., Garrido, B., Rizk, R., and Labbé, C., “Electroluminescence efficiencies of erbium in silicon-based hosts”, Applied Physics Letters, vol. 103, no. 19, p. 191109, 2013.

Probing the Electromagnetic Local Density of States with a Strongly Mixed Electric and Magnetic Dipole Emitter

S. Karaveli, Li, D., and Zia, R., “Probing the Electromagnetic Local Density of States with a Strongly Mixed Electric and Magnetic Dipole Emitter”, arXiv:1311.0516, 2013.

PDF:

SKaraveli_NiMgO_arXiv_1311.0516v1.pdf

Surface phonon-polariton enhanced optical forces in silicon carbide nanostructures

D. Li, Lawandy, N. M., and Zia, R., “Surface phonon-polariton enhanced optical forces in silicon carbide nanostructures”, Optics Express, vol. 21, no. 18, pp. 20900-20910, 2013.

PDF:

DLi_OptExpress_2013.pdf

Time-Resolved Energy-Momentum Spectroscopy of Electric and Magnetic Dipole Transitions in Cr3+:MgO

S. Karaveli, Wang, S., Xiao, G., and Zia, R., “Time-Resolved Energy-Momentum Spectroscopy of Electric and Magnetic Dipole Transitions in Cr³⁺:MgO”, ACS Nano, vol. 7, no. 8, pp. 7165-7172, 2013.

PDF:

SKaraveli_ACSNano_2013.pdf

Direct modulation of lanthanide emission at sub-lifetime scales

S. Karaveli, Weinstein, A. J., and Zia, R., “Direct modulation of lanthanide emission at sub-lifetime scales”, Nano Letters, vol. 13, no. 5, pp. 2264 - 2269, 2013.

PDF:

Karaveli_NanoLetters_2013.pdf

Orientation of luminescent excitons in layered nanomaterials

J. A. Schuller, Karaveli, S., Schiros, T., He, K., Yang, S., Kymissis, I., Shan, J., and Zia, R., “Orientation of luminescent excitons in layered nanomaterials”, Nature Nanotechnology, vol. 8, pp. 271 - 276, 2013.

PDF:

Schuller_NatureNanotech_2013.pdf

2012

Magnetic dipole and electric quadrupole transitions in the trivalent lanthanide series: Calculated emission rates and oscillator strengths

C. M. Dodson and Zia, R., “Magnetic dipole and electric quadrupole transitions in the trivalent lanthanide series: Calculated emission rates and oscillator strengths”, Physical Review B, vol. 86, no. 12, p. 125102, 2012.

PDF:

Dodson_PRB_2012.pdf

Quantifying the magnetic nature of light emission

T. H. Taminiau, Karaveli, S., van Hulst, N. F., and Zia, R., “Quantifying the magnetic nature of light emission”, Nature Communications, vol. 3, p. 979, 2012.

PDF:

Taminiau_NatureComm_2012.pdf

Optical frequency magnetic dipole transitions

S. Karaveli and Zia, R., “Optical frequency magnetic dipole transitions”, in Encyclopedia of Nanotechnology, Dordrecht, Netherlands: Springer , 2012, pp. 1942 - 1950.