Venkatraman Gopalan

Affiliate Researcher
Titles and Affiliations
Professor, Materials Science and Engineering

Vankatraman Gopalan's research focuses on the science and technology of nonlinear optical materials. The work straddles materials science, physics, and optical engineering. There are three current areas of focus: complex oxides, semiconductor fibers and metalattices, and symmetry. Technology impacted by Gopalan's research includes: 

  • Multiferroics enable electrical control of magnetic devices, and vice versa, and dual electrical-magnetic storage media
  • Nonlinear optical devices are targeted for optical communications and infrared applications
  • The vision of hybrid semiconductor-metal-silica structures is all-fiber optoelectronics, where light generation, modulation and detection can be performed within a fiber

In the News

Research Keywords

Recent Publications

Discovery of a layered multiferroic compound Cu1−xMn1+ySiTe3 with strong magnetoelectric coupling

De, C., Liu, Y., Ayyagari, S. V. G., Zheng, B., Kelley, K. P., Hazra, S., He, J., Pawledzio, S., Mali, S., Guchhait, S., Yoshida, S., Guan, Y., Lee, S. H., Sretenovic, M., Ke, X., Wang, L., Engelhard, M. H., Du, Y., Xie, W. & Wang, X. & 5 others, Crespi, V. H., Alem, N., Gopalan, V., Zhang, Q. & Mao, Z., Jan 3 2025, In: Science Advances. 11, 1, eadp9379.

Research output: Contribution to journalArticlepeer-review

Interplay between Two Structure Types in the Incommensurately Modulated A14+2/3Ta8Se46+2/3 Compounds (A = Rb, Cs)

Ie, T. S., Balvanz, A., Malliakas, C. D., Nag, J., Sarker, S., Marmer, A., Gopalan, V. & Kanatzidis, M. G., Feb 10 2025, In: Inorganic chemistry. 64, 5, p. 2403-2414 12 p.

Research output: Contribution to journalArticlepeer-review

Realization of Non-Equilibrium Wurtzite Structure in Heterovalent Ternary MgSiN2 Film Grown by Reactive Sputtering

Kageyama, S., Okamoto, K., Yasuoka, S., Ide, K., Hanzawa, K., Hiranaga, Y., Hsieh, P., Harza, S., Suceava, A., Saha, A., Yokota, H., Shigematsu, K., Azuma, M., Gopalan, V., Uchida, H., Hiramatsu, H. & Funakubo, H., 2025, (Accepted/In press) In: Advanced Electronic Materials.

Research output: Contribution to journalArticlepeer-review

Hidden domain boundary dynamics toward crystalline perfection

Mangu, A., Stoica, V. A., Zheng, H., Yang, T., Zhang, M., Wang, H., Zu, R., Nguyen, Q. L., Song, S., Das, S., Meisenheimer, P., Donoway, E., Chollet, M., Sun, Y., Turner, J. J., Freeland, J. W., Wen, H., Martin, L. W., Chen, L. Q. & Gopalan, V. & 3 others, Zhu, D., Cao, Y. & Lindenberg, A. M., Jan 14 2025, In: Proceedings of the National Academy of Sciences of the United States of America. 122, 2, e2407772122.

Research output: Contribution to journalArticlepeer-review

Peculiar Magnetic and Magneto-Transport Properties in a Noncentrosymmetric Self-Intercalated van der Waals Ferromagnet Cr5Te8

Rai, B., Kuila, S. K., Saha, R., Hazra, S., De, C., Sau, J., Gopalan, V., Jana, P. P., Parkin, S. S. P. & Kumar, N., Jan 28 2025, In: Chemistry of Materials. 37, 2, p. 746-755 10 p.

Research output: Contribution to journalArticlepeer-review

Thermodynamic theory of linear optical and electro-optical properties of ferroelectrics

Ross, A., Ali, M. S. M. M., Saha, A., Zu, R., Gopalan, V., Dabo, I. & Chen, L. Q., Feb 15 2025, In: Physical Review B. 111, 8, 085109.

Research output: Contribution to journalArticlepeer-review

Observations on Macroscopic Surface Modification and Oxidation of Tungsten and Tungsten Carbide in Laser Focus in Air

Seo, M., Yu, S., Gopalan, V. & Winfrey, A. L., 2025, In: Fusion Science and Technology. 81, 2, p. 118-131 14 p.

Research output: Contribution to journalArticlepeer-review

Large enhancement of ferroelectric properties of perovskite oxides via nitrogen incorporation

Wang, T., Gong, F., Ma, X., Pan, S., Wei, X. K., Kuo, C., Yoshida, S., Ku, Y. C., Wang, S., Yang, Z., Hazra, S., Zhang, K. H. L., Liu, X., Tang, Y., Zhu, Y. L., Chang, C. F., Das, S., Ma, X., Chen, L. & Xu, B. & 4 others, Gopalan, V., Bellaiche, L., Martin, L. W. & Chen, Z., Jan 10 2025, In: Science Advances. 11, 2, eads8830.

Research output: Contribution to journalArticlepeer-review

Untangling individual cation roles in rock salt high-entropy oxides

Almishal, S. S. I., Sivak, J. T., Kotsonis, G. N., Tan, Y., Furst, M., Srikanth, D., Crespi, V. H., Gopalan, V., Heron, J. T., Chen, L. Q., Rost, C. M., Sinnott, S. B. & Maria, J. P., Oct 15 2024, In: Acta Materialia. 279, 120289.

Research output: Contribution to journalArticlepeer-review

Perspectives and progress on wurtzite ferroelectrics: Synthesis, characterization, theory, and device applications

Casamento, J., Baksa, S. M., Behrendt, D., Calderon, S., Goodling, D., Hayden, J., He, F., Jacques, L., Lee, S. H., Smith, W., Suceava, A., Tran, Q., Zheng, X., Zu, R., Beechem, T., Dabo, I., Dickey, E. C., Esteves, G., Gopalan, V. & Henry, M. D. & 9 others, Ihlefeld, J. F., Jackson, T. N., Kalinin, S. V., Kelley, K. P., Liu, Y., Rappe, A. M., Redwing, J., Trolier-McKinstry, S. & Maria, J. P., Feb 19 2024, In: Applied Physics Letters. 124, 8, 080501.

Research output: Contribution to journalShort surveypeer-review

Light-induced transitions of polar state and domain morphology of photoferroelectric nanoparticles

Eliseev, E. A., Morozovska, A. N., Vysochanskii, Y. M., Yurchenko, L. P., Gopalan, V. & Chen, L. Q., Jan 15 2024, In: Physical Review B. 109, 4, 045434.

Research output: Contribution to journalArticlepeer-review

Symmetry classification and enumeration of square-tile sikku kolams

Gopalan, V., 2024, In: Journal of Mathematics and the Arts. 18, 3-4, p. 244-257 14 p.

Research output: Contribution to journalArticlepeer-review

Colossal Strain Tuning of Ferroelectric Transitions in KNbO3 Thin Films

Hazra, S., Schwaigert, T., Ross, A., Lu, H., Saha, U., Trinquet, V., Akkopru-Akgun, B., Gregory, B. Z., Mangu, A., Sarker, S., Kuznetsova, T., Sarker, S., Li, X., Barone, M. R., Xu, X., Freeland, J. W., Engel-Herbert, R., Lindenberg, A. M., Singer, A. & Trolier-McKinstry, S. & 8 others, Muller, D. A., Rignanese, G. M., Salmani-Rezaie, S., Stoica, V. A., Gruverman, A., Chen, L. Q., Schlom, D. G. & Gopalan, V., Dec 27 2024, In: Advanced Materials. 36, 52, 2408664.

Research output: Contribution to journalArticlepeer-review

High-entropy engineering of the crystal and electronic structures in a Dirac material

Laha, A., Yoshida, S., Marques dos Santos Vieira, F., Yi, H., Lee, S. H., Ayyagari, S. V. G., Guan, Y., Min, L., Gonzalez Jimenez, J., Miao, L., Graf, D., Sarker, S., Xie, W., Alem, N., Gopalan, V., Chang, C. Z., Dabo, I. & Mao, Z., Dec 2024, In: Nature communications. 15, 1, 3532.

Research output: Contribution to journalArticlepeer-review

Structural frustration effects by mixed alkali ions in ferroelectric Dion–Jacobson layered perovskites (Cs,Rb)NdNb2O7

Lu, Z. T., Asaki, S., Yoshida, S., Moriyoshi, C., Hasegawa, G., Fujita, K., Gopalan, V., Hayashi, K. & Akamatsu, H., Nov 25 2024, In: Journal of Materials Chemistry C. 13, 4, p. 1812-1823 12 p.

Research output: Contribution to journalArticlepeer-review