Google Scholar Profile
Nagpal Research Group
Ph.D. University of Minnesota (2009)
B.S. Indian Institute of Technology (I.I.T.) Delhi (2004)
- 2015 - Dean's Faculty Fellowship, University of Colorado Boulder
- 2015-17 - W.M. Keck Foundation Research Award
- 2014-19 - NSF CAREER Award
- 2013 - New Inventor of Year, University of Colorado Boulder
- “Photoexcited quantum dots for killing multidrug-resistant bacteria”, Courtney C.M., Goodman S.M., McDaniel J.A., Madinger N.E., Chatterjee A.*, Nagpal P.*, Nature Materials, 15, 529 (2016).
- “Single nucleobase identification using biophysical signatures from nanoelectronic quantum tunneling”, Korhsoj L.E., Afsari S., Khan S., Chatterjee A.*, Nagpal P.*, Small, In Press (2017).
- “Standalone anion- and co-doped titanium dioxide nanotubes for photocatalytic and photoelectrochemical solar-to-fuel conversion”, Ding Y., Nagpal P.*, Nanoscale, 8, 17496 (2016).
- “Long range energy transfer in self-assembled quantum dot-DNA cascades”, Goodman S.M., Siu A., Singh V., Nagpal P.*, Nanoscale, 7, 18435 (2015).
- “Measurements of Single Nucleotide Electronic States as Nanoelectronic Fingerprints for Identification of DNA Nucleobases, Their Protonated and Unprotonated States, Isomers, and Tautomers”, Ribot J.C., Chatterjee A.*, Nagpal P.*, The Journal of Physical Chemistry B, 119, 4968 (2015).
- “Air-pressure tunable depletion width, rectification behavior, and charge conduction in oxide nanotubes”, Alivov Y., Hans H., Singh V., Nagpal P.*, ACS Applied Materials and Interfaces, 7, 2153 (2015).
- “Low exciton-phonon coupling, high charge carrier mobilities, and multiexciton properties in two-dimensional (2D) lead, cadmium, silver, and copper chalcogenide nanostructures”, Ding Y., Singh V., Goodman S.M., Nagpal P.*, The Journal of Physical Chemistry Letters, 5, 4291 (2014).
- “Multiple energy exciton shelves in quantum dot-DNA nano-bioelectronics”, Goodman S., Singh V., Ribot J.C., Chatterjee A., Nagpal P.*, The Journal of Physical Chemistry Letters, 5, 3909 (2014).
- “Copper plasmonics and catalysis: Role of electron-phonon interactions in dephasing localized surface plasmons”, Sun Q., Ding Y., Goodman S., Funke H., Nagpal P.*, Nanoscale, 6, 12450 (2014).
- “Pseudo-direct bandgap transitions in silicon nanocrystals: effect on optoelectronics and thermoelectrics”, Singh V., Yu Y., Sun Q., Korgel B., Nagpal P.*, Nanoscale, 6, 14643 (2014).
- “Doping of Wide-Bandgap Semiconductor Nanotubes: Optical, Electronic and Magnetic Dopants”, Alivov Y., Singh V., Ding Y., Cerkovnik L.J., Nagpal P.*, Nanoscale, 6, 10839 (2014).
- “Transparent conducting oxide nanotubes”, Alivov Y., Singh V., Ding Y., Nagpal P.*, Nanotechnology, 25, 385202 (2014).
- “Photocatalysis deconstructed: design of a new catalysts for artificial photosynthesis”, Singh V., Beltran I.J.C., Ribot, J.C., Nagpal P.*, Nano Letters, 14, 597 (2014).
- “Plasmon-enhanced energy transfer for improved upconversion of infrared radiation in doped lanthanide nanocrystals”, Sun Q., Mundoor, H., Ribot J.C., Singh V., Smalyukh I.I., Nagpal P.*, Nano Letters, 14, 101 (2014)
- “Role of mid-gap states in charge transport and photoconductivity in semiconductor nanocrystal films”, Nagpal P., Klimov V.I., Nature Communications, 2:486, (2011).
- “Ultra-smooth patterned metals for Plasmonics and Metamaterials”, Nagpal P., Lindquist N., Oh S.H., Norris D.J., Science, 325, 594, (2009).
Controlling the structure of matter at the nanoscale opens exciting opportunities for manipulating the properties of materials with great flexibility and precision. While nanoscale structures made from semiconductors show unique and potentially useful size- and shape-dependent properties due to quantum confinement, metal nanostructures can efficiently confine light into nanoscale volumes due to generation of surface plasmon polaritons. Combining the useful properties of these materials can have important implications for absorption and emission of electromagnetic radiation for solar cells, artificial light sources, and other applications. Moreover, careful understanding of electronic structure in these hybrid nanoscale systems can also enable new physical processes for photosensitized catalytic or photovoltaic charge extraction.
My research focuses on development of novel material systems and processes for development of functional nanomaterials. Our studies are focused on advancement of fundamental knowledge of electronic structures, carrier dynamics, and interactions between incident electromagnetic radiation and these nanoscale materials. Based on our understanding, we design and fabricate these nanostructured materials using a variety of top-down and bottom-up scalable nanofabrication techniques. We also employ a variety of spectroscopic methods including optical, electronic, ultrafast and other optoelectronic and surface sensitive spectroscopy techniques to study fundamental interaction between light, charge carriers and phonons in individual nanoparticles and mesoscale nanoparticle assemblies. This leads us to design principles for development of useful devices based on desired engineered nanoparticle properties and cooperative phenomenon in nanostructured assemblies.