Dr. Nardeep
Kumar
University of Puerto Rico, USA
Postdoctoral researcher
Email: nardeep.kumar@upr.edu
Qualifications
2014, Ph.D.,
Physics, The
University of Kansas, Lawrence, KS, USA
2006, M.S.,
Physics, Punjabi University, Patiala, Punjab, India
2004, B.S.,
Physics, Chemistry, Mathematics, Panjab University, Chandigarh, Punjab, India
Research Fields
Physics, Optics
Graphene, Transition metal
dichalcogenides, VO2
Ultrafast spectroscopy
Publications
(selected)
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KUMAR, N., RUZICKA, B. A., BUTCH, N. P., SYERS, P.,
KIRSHENBAUM, K., PAGLIONE, J. and ZHAO, H., 2011, Spatially resolved
femtosecond pump-probe study of topological insulator Bi2Se3. Physical Review B - Condensed Matter and Materials Physics. 2011.
Vol. 83, no. 23, p. 1–8. DOI 10.1103/PhysRevB.83.235306.
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KUMAR, N., HE, J., HE, D., WANG, Y. and ZHAO, H., 2013,
Charge carrier dynamics in bulk MoS2 crystal studied by transient
absorption microscopy. Journal of Applied Physics. 2013. Vol. 113,
no. 13. DOI 10.1063/1.4799110.
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KUMAR, N., KUMAR, J., GERSTENKORN, C., WANG, R., CHIU, H. Y.,
SMIRL, A. L. and ZHAO, H., 2013, Third harmonic generation in graphene and
few-layer graphite films. Physical Review B - Condensed Matter and Materials
Physics. 2013. Vol. 87, no. 12, p. 1–5.
DOI 10.1103/PhysRevB.87.121406.
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KUMAR, N., NAJMAEI, S., CUI, Q., CEBALLOS, F., AJAYAN, P. M.,
LOU, J. and ZHAO, H., 2013, Second harmonic microscopy of monolayer MoS2. Physical Review B - Condensed Matter and Materials Physics. 2013.
Vol. 87, no. 16, p. 1–6. DOI 10.1103/PhysRevB.87.161403.
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KUMAR, N., CUI, Q., CEBALLOS, F., HE, D., WANG, Y. and ZHAO,
H., 2014, Exciton diffusion in monolayer and bulk MoSe2. Nanoscale [online]. 2014. Vol. 6, no. 9, p. 4915–9.
DOI 10.1039/c3nr06863c.
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KUMAR, N., CUI, Q., CEBALLOS, F., HE, D., WANG, Y. and ZHAO,
H., 2014, Exciton-exciton annihilation in MoSe2 monolayers. Physical
Review B - Condensed Matter and Materials Physics. 2014. Vol. 89,
no. 12, p. 1–6. DOI 10.1103/PhysRevB.89.125427.
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KUMAR, N., HE, J., HE, D., WANG, Y. and ZHAO, H., 2014,
Valley and spin dynamics in MoSe2 two-dimensional crystals. Nanoscale [online]. 2014. Vol. 6, no. 21, p. 12690–5.
DOI 10.1039/c4nr03607g.
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HE, J., KUMAR, N., BELLUS, M. Z., CHIU, H. Y., HE, D., WANG,
Y. and ZHAO, H., 2014, Electron transfer and coupling in graphene-tungsten
disulfide van der Waals heterostructures. Nature communications [online]. 2014. Vol. 5, p. 5622. DOI 10.1038/ncomms6622.
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HE, K., KUMAR, N., ZHAO, L., WANG, Z., MAK, K. F., ZHAO, H.
and SHAN, J., 2014, Tightly bound excitons in monolayer WSe2. Physical
Review Letters. 2014. Vol. 113, no. 2, p. 1–5.
DOI 10.1103/PhysRevLett.113.026803.
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CUI, Q., CEBALLOS, F., KUMAR, N. and ZHAO, H., 2014,
Transient absorption microscopy of monolayer and bulk WSe2. ACS
Nano. 2014. Vol. 8, no. 3, p. 2970–2976.
DOI 10.1021/nn500277y.
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WANG, R., CHIEN, H. C., KUMAR, J., KUMAR, N., CHIU, H. Y. and
ZHAO, H., 2014, Third-Harmonic Generation in Ultrathin Films of MoS2. ACS Appl. Mater. Interfaces. 2014.
Vol. 6, no.1, p. 314–318. DOI: 10.1021/am4042542.
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ROCHFORD, C., KUMAR, N., LIU, J., ZHAO, H. and WU, J., 2013,
All-optical technique to correlate defect structure and carrier transport in
transferred graphene films. ACS Applied Materials and Interfaces. 2013.
Vol. 5, no. 15, p. 7176–7180. DOI 10.1021/am401518y.
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GONG, M., KIRKEMINDE, A., KUMAR, N., ZHAO, H. and REN, S.,
2013, Ionic-passivated FeS2 photocapacitors for energy conversion
and storage. Chemical communications (Cambridge, England) [online].
2013. Vol. 49, no. 81, p. 9260–2. DOI 10.1039/c3cc45088k.
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WANG, Rui, RUZICKA, B. A., KUMAR, N., BELLUS, M. Z., CHIU, H.
Y. and ZHAO, H., 2012, Ultrafast and spatially resolved studies of charge
carriers in atomically thin molybdenum disulfide. Physical Review B -
Condensed Matter and Materials Physics. 2012. Vol. 86, no. 4,
p. 1–5. DOI 10.1103/PhysRevB.86.045406.
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RUZICKA, B. A., KUMAR, N., WANG, S., PING, L., K. and ZHAO,
H., 2011, Two-probe study of hot carriers in reduced graphene oxide. Journal
of Applied Physics. 2011. Vol. 109, no. 8, p. 1–4.
DOI 10.1063/1.3573674.