KD
Keshav M. Dani
cond-mat.mtrl-scicond-mat.mes-hallphysics.app-phphysics.opticscond-mat.str-elLaserscharge transferlaserliposomephotoluminescence
On Valency
published · living versionsW_7zk6wdu8·v1 · currentpublished
Incoherent dark excitons extend Floquet-like physics across time and momentum
with Xing Zhu, Jacques Hawecker, Enrico Perfetto, Vivek Pareek +14
1 version
Preprints & journals
56 papers in the corpus · 2002–2026Quasiparticle phono-conversion: filming carriers coalescing into excitons2607.28417v1 · Enrico Perfetto, Takumi Fukuda, Xing Zhu et al.2026 · 0 citationsarXiv
Photoemission electron microscopy for connectomics.41284880 · Wildenberg, Gregg, Boergens, Kevin M, Lambert, Lola et al.2025 · 2 citationsProceedings of the National Academy of Sciences of the United States of America. 2025;122(48):e2521349122
Studying the effect of EDAI passivation on surface defects in triple cation mixed halide perovskite with PEEM.41161051 · Kokate, Prajakta, Boeije, Yorrick, Tumen-Ulzii, Ganbaatar et al.2025 · 0 citationsUltramicroscopy. 2026;279:114261
A holistic view of the dynamics of long-lived valley polarized dark excitonic states in monolayer WS2.40640181 · Zhu, Xing, Bacon, David R, Pareek, Vivek et al.2025 · 7 citationsNature communications. 2025;16(1):6385
Revealing Effect of Surface Hydroxyl Variation on Charge Spatiotemporal Dynamics in Photocatalysis.40545640 · Yao, Hanyu, Li, Qian, Gao, Yuying et al.2025 · 30 citationsJournal of the American Chemical Society. 2025;147(26):23308-23317
Frequency down-conversion of terahertz waves at optically induced temporal boundaries in GaAs waveguides.39634945 · Takano, Keisuke, Uchiyama, Satoko, Nagase, Shintaro et al.2026 · 5 citationsNanophotonics (Berlin, Germany). 2024;13(17):3077-3089
Driving non-trivial quantum phases in conventional semiconductors with intense excitonic fields2403.08725v1 · Vivek Pareek, David R. Bacon, Xing Zhu et al.2024 · 0 citationsarXiv
Through the Lens of a Momentum Microscope: Viewing Light-Induced Quantum Phenomena in 2D Materials.35817468 · Karni, Ouri, Esin, Iliya, Dani, Keshav M2023 · 25 citationsAdvanced materials (Deerfield Beach, Fla.). 2023;35(27):e2204120
Optimum excitation wavelength and photon energy threshold for spintronic terahertz emission from Fe/Pt bilayer.35800756 · Mag-Usara, Valynn Katrine, Escaño, Mary Clare, Petoukhoff, Christopher E et al.2022 · 12 citationsiScience. 2022;25(7):104615
Local nanoscale phase impurities are degradation sites in halide perovskites.35609624 · Macpherson, Stuart, Doherty, Tiarnan A S, Winchester, Andrew J et al.2022 · 234 citationsNature. 2022;607(7918):294-300
Dominating Interlayer Resonant Energy Transfer in Type-II 2D Heterostructure.35262327 · Karmakar, Arka, Al-Mahboob, Abdullah, Petoukhoff, Christopher E et al.2022 · 36 citationsACS nano. 2022;16(3):3861-3869
Structure of the moiré exciton captured by imaging its electron and hole.35264760 · Karni, Ouri, Barré, Elyse, Pareek, Vivek et al.2022 · 132 citationsNature. 2022;603(7900):247-252
An On-Demand Drug Delivery System for Control of Epileptiform Seizures.35214199 · Nakano, Takashi, Rizwan, Shakila B, Myint, David M A et al.2022 · 16 citationsPharmaceutics. 2022;14(2)
Nanoscale chemical heterogeneity dominates the optoelectronic response of alloyed perovskite solar cells.34811554 · Frohna, Kyle, Anaya, Miguel, Macpherson, Stuart et al.2026 · 170 citationsNature nanotechnology. 2022;17(2):190-196
Unraveling the varied nature and roles of defects in hybrid halide perovskites with time-resolved photoemission electron microscopy.35003331 · Kosar, Sofiia, Winchester, Andrew J, Doherty, Tiarnan A S et al.2022 · 71 citationsEnergy & environmental science. 2021;14(12):6320-6328
Visualizing superconductivity in an inversion-symmetry-broken doped Weyl semimetal2108.09630v1 · Zhenyu Wang, Jorge Olivares, Hiromasa Namiki et al.2021 · 0 citationsarXiv
Moiré-localized interlayer exciton wavefunctions captured by imaging its electron and hole constituents2108.01933v1 · Ouri Karni, Elyse Barr'e, Vivek Pareek et al.2021 · 3 citationsarXiv
Ultrafast Frequency-Shift Dynamics at Temporal Boundary Induced by Structural-Dispersion Switching of Waveguides.34397257 · Miyamaru, Fumiaki, Mizuo, Chihiro, Nakanishi, Toshihiro et al.2021 · 58 citationsPhysical review letters. 2021;127(5):053902
Local Nanoscale Defective Phase Impurities Are the Sites of Degradation in Halide Perovskite Devices2107.09549v1 · Stuart Macpherson, Tiarnan A. S. Doherty, Andrew J. Winchester et al.2021 · 2 citationsarXiv
The 2021 ultrafast spectroscopic probes of condensed matter roadmap.33951618 · Lloyd-Hughes, J, Oppeneer, P M, Pereira Dos Santos, T et al.2025 · 111 citationsJournal of physics. Condensed matter : an Institute of Physics journal. 2021;33(35)
Experimental measurement of the intrinsic excitonic wave function.33883143 · Man, Michael K L, Madéo, Julien, Sahoo, Chakradhar et al.2021 · 117 citationsScience advances. 2021;7(17)
Directly visualizing the momentum-forbidden dark excitons and their dynamics in atomically thin semiconductors.33273099 · Madéo, Julien, Man, Michael K L, Sahoo, Chakradhar et al.2021 · 298 citationsScience (New York, N.Y.). 2020;370(6521):1199-1204
Strong Plasmon-Exciton Coupling in Ag Nanoparticle-Conjugated Polymer Core-Shell Hybrid Nanostructures.32961735 · Petoukhoff, Christopher E, Dani, Keshav M, O'Carroll, Deirdre M2020 · 12 citationsPolymers. 2020;12(9)
Visualization of two-dimensional transition dipole moment texture in momentum space using high-harmonic generation spectroscopy2006.09376v3 · K. Uchida, V. Pareek, K. Nagai et al.2020 · 46 citationsPhys. Rev. B 103, 161406 (2021)
Performance-limiting nanoscale trap clusters at grain junctions in halide perovskites.32296189 · Doherty, Tiarnan A S, Winchester, Andrew J, Macpherson, Stuart et al.2020 · 370 citationsNature. 2020;580(7803):360-366
Ultrafast Control of the Dimensionality of Exciton-Exciton Annihilation in Atomically Thin Black Phosphorus.32083923 · Pareek, Vivek, Madéo, Julien, Dani, Keshav M2020 · 21 citationsPhysical review letters. 2020;124(5):057403
Examining the surface phase diagram of IrTe with photoemission1912.04516v2 · M. Rumo, C.W. Nicholson, A. Pulkkinen et al.2019 · 16 citationsPhys. Rev. B 101, 235120 (2020)
Improving Signal and Photobleaching Characteristics of Temporal Focusing Microscopy with the Increase in Pulse Repetition Rate.31357714 · Lisicovas, Viktoras, Mariserla, Bala Murali Krishna, Sahoo, Chakradhar et al.2020 · 0 citationsMethods and protocols. 2019;2(3)
Pulling apart photoexcited electrons by photoinducing an in-plane surface electric field.30202786 · Wong, E Laine, Winchester, Andrew J, Pareek, Vivek et al.2019 · 38 citationsScience advances. 2018;4(9):eaat9722
Ultrafast dynamics and sub-wavelength periodic structure formation following irradiation of GaAs with femtosecond laser pulses1807.11422v2 · A. Margiolakis, G. D. Tsibidis, K. M. Dani et al.2018 · 37 citationsPhys. Rev. B 98, 224103 (2018)
High-Temperature Terahertz Optical Diode Effect without Magnetic Order in Polar FeZnMo_3O_8.29400514 · Yu, Shukai, Gao, Bin, Kim, Jae Wook et al.2018 · 78 citationsPhysical review letters. 2018;120(3):037601
Similar ultrafast dynamics of several dissimilar Dirac and Weyl semimetals1712.06754v1 · Chris P. Weber, Bryan S. Berggren, Madison G. Masten et al.2017 · 54 citationsJournal of Applied Physics 122, 223102 (2017)
Terahertz frequency magnetoelectric effect in Ni doped CaBaCoO1708.04345v1 · Shukai Yu, C. Dhanasekhar, Venimadhav Adyam et al.2017 · 13 citationsPhys. Rev. B 96, 094421 (2017)
Obtaining Cross-Sections of Paint Layers in Cultural Artifacts Using Femtosecond Pulsed Lasers.28772468 · Harada, Takaaki, Spence, Stephanie, Margiolakis, Athanasios et al.2020 · 13 citationsMaterials (Basel, Switzerland). 2017;10(2)
Jahn-Teller-induced femtosecond electronic depolarization dynamics of the nitrogen-vacancy defect in diamond.27848938 · Ulbricht, Ronald, Dong, Shuo, Chang, I-Ya et al.2018 · 36 citationsNature communications. 2016;7:13510
Interfacing with Neural Activity via Femtosecond Laser Stimulation of Drug-Encapsulating Liposomal Nanostructures.27896311 · Nakano, Takashi, Mackay, Sean M, Wui Tan, Eng et al.2017 · 11 citationseNeuro. 2016;3(6)
Ultrafast Charge Transfer and Enhanced Absorption in MoS2-Organic van der Waals Heterojunctions Using Plasmonic Metasurfaces.27934091 · Petoukhoff, Christopher E, Krishna, M Bala Murali, Voiry, Damien et al.2018 · 78 citationsACS nano. 2016;10(11):9899-9908
Imaging the motion of electrons across semiconductor heterojunctions.27723731 · Man, Michael K L, Margiolakis, Athanasios, Deckoff-Jones, Skylar et al.2018 · 175 citationsNature nanotechnology. 2017;12(1):36-40
Symmetry and optical selection rules in graphene quantum dots1610.01921v3 · Rico Pohle, Eleftheria G. Kavousanaki, Keshav M. Dani et al.2016 · 18 citationsPhys. Rev. B 97, 115404 (2018)
Observing the interplay between surface and bulk optical nonlinearities in thin van der Waals crystals.26936437 · Deckoff-Jones, Skylar, Zhang, Jingjing, Petoukhoff, Christopher E et al.2016 · 53 citationsScientific reports. 2016;6:22620
Protecting the properties of monolayer MoS₂ on silicon based substrates with an atomically thin buffer.26869269 · Man, Michael K L, Deckoff-Jones, Skylar, Winchester, Andrew et al.2016 · 89 citationsScientific reports. 2016;6:20890
Chemical Vapor Deposition Synthesized Atomically Thin Molybdenum Disulfide with Optoelectronic-Grade Crystalline Quality.26256639 · Bilgin, Ismail, Liu, Fangze, Vargas, Anthony et al.2016 · 162 citationsACS nano. 2015;9(9):8822-32
Ultrafast Intrinsic Photoresponse and Direct Evidence of Sub-gap States in Liquid Phase Exfoliated MoS2Thin Films.26175112 · Ghosh, Sujoy, Winchester, Andrew, Muchharla, Baleeswaraiah et al.2016 · 67 citationsScientific reports. 2015;5:11272
Ultrafast properties of femtosecond-laser-ablated GaAs and its application to terahertz optoelectronics.26176476 · Madéo, Julien, Margiolakis, Athanasios, Zhao, Zhen-Yu et al.2015 · 27 citationsOptics letters. 2015;40(14):3388-91
20 THz broadband generation using semi-insulating GaAs interdigitated photoconductive antennas.25401668 · Hale, P J, Madeo, J, Chin, C et al.2015 · 79 citationsOptics express. 2014;22(21):26358-64
Mimicking subsecond neurotransmitter dynamics with femtosecond laser stimulated nanosystems.24954021 · Nakano, Takashi, Chin, Catherine, Myint, David Mo Aung et al.2016 · 11 citationsScientific reports. 2014;4:5398
Strong electronic correlation effects in coherent multidimensional nonlinear optical spectroscopy.21395320 · Karadimitriou, M E, Kavousanaki, E G, Dani, K M et al.2011 · 8 citationsThe journal of physical chemistry. B. 2011;115(18):5634-47
Ultrafast nonlinear optical spectroscopy of a dual-band negative index metamaterial all-optical switching device.21369223 · Dani, Keshav M, Ku, Zahyun, Upadhya, Prashanth C et al.2011 · 32 citationsOptics express. 2011;19(5):3973-83
Relativistic Drude Response of Photoexcited Dirac Quasiparticles in Graphene1009.1377v2 · K. M. Dani, J. Lee, R. Sharma et al.2010 · 0 citationsPhys. Rev. B 86, 125403 (2012)
Subpicosecond optical switching with a negative index metamaterial.19737005 · Dani, Keshav M, Ku, Zahyun, Upadhya, Prashanth C et al.2009 · 122 citationsNano letters. 2009;9(10):3565-9
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