Femtosecond Spectroscopy Unit (Keshav Dani)

Group Publications

2024

65.	Attenuation management in terahertz frequency conversion with temporal boundary using a metallic structure Phys. Rev. Applied 35 (21), 044044 (2024) F. Miyamaru, M. Amaki, K. Takano, J. Pérez-Urquizo, J. Madéo, K. M. Dani, Y. Nakata and T. Nakanishi

2023

64.

Through the lens of a momentum microscope: viewing light-induced quantum phenomena in two-dimensional materials

Adv. Mater. 35 (27), 2204120 (2023)

O. Karni, I. Esin, K.M. Dani

63.

Transition from diffusive to superdiffusive transport in carbon nanotube networks via nematic order control

Nano Letters (2023)

M. Wais, F.R.G. Bagsican, N. Komatsu, W. Gao, K. Serita, H. Murakami, K. Held, I. Kawayama, J. Kono, M. Battiato and M. Tonouchi.

62.

Phase composition, microstructure, and optical characteristics of spin-coated La-TiO₂ and Fe-TiO₂

physica status solidi (a) (2023)

A. Liboon Jr, S. R. Cabo, R. B. Unabia, F. R. G. Bagsican and R. T. Candidato Jr

2022

61.	Harmonic generation in confinement Nat. Phys. (2022) J. Madéo, and K. M. Dani
60.	Optimum excitation wavelength and photon energy threshold for spintronic terahertz emission from Fe/Pt bilayer iScience 25, 7, 104615 (2022) V. K. Mag-usara, M. C. Escaño, C. E. Petoukhoff, G. Torosyan, L. Scheuer, J. Madéo, J. Afalla, M. L. Talara, J. E. Muldera, H. Kitahara, D. R. Bacon, M. Nakajima, K. M. Dani, E. T. Papaioannou, R. Beigang and M. Tani,
59.	Local nanoscale phase impurities are degradation sites in halide perovskites Nature 607, 294-300 (2022) S. Macpherson, T. A. S. Doherty, A. J. Winchester, S. Kosar, D. N. Johnstone, Y. Chiang, K. Galkowski, M. Anaya, K. Frohna, A. N. Iqbal, S. Nagane, B. Roose, Z. Andaji-Garmaroudi, K. W. P. Orr, J. E. Parker, P. A. Midgley, K. M. Dani and S. D. Stranks
58.	Dominating interlayer resonant energy transfer in type-II 2D heterostructure ACS Nano 16, 3, 3861–3869 (2022) A. Karmakar, A. Al-Mahboob, C. E. Petoukhoff, O. Kravchyna, N. S. Chan, T. Taniguchi, K. Watanabe, and K. M. Dani
57.	Structure of the moiré exciton captured by imaging its electron and hole Nature 603, 247-252 (2022) O. Karni^†, E. Barré^†, V. Pareek^†, J. D. Georgaras^†, M. K. L. Man^†, C. Sahoo^†, D. R. Bacon, X. Zhu, H. B. Ribeiro, A. L. O’Beirne, J. Hu, A. Al-Mahboob, M. M. M. Abdelrasoul, N. S. Chan, A. Karmakar, A. J. Winchester, B. Kim, K. Watanabe, T. Taniguchi, K. Barmak, J. Madéo, F. H. da Jornada, T. F. Heinz and K. M. Dani ^†These authors contributed equally to this work.
56.	An on-demand drug delivery system for control of epileptiform seizures Pharmaceutics 14, 468 (2022) T. Nakano, S. B. Rizwan, D. M. A. Myint, J. Gray, S. M. Mackay, P. Harris, C. G. Perk, B. I. Hyland, R. Empson, E. W. Tan, K. M. Dani, J. N. Reynolds, J. R. Wickens
55.	Nanoscale chemical heterogeneity dominates the optoelectronic response of alloyed perovskite solar cells Nat. Nanotechnol. 17, 190-196 (2022) K. Frohna, M. Anaya, S. Macpherson, J. Sung, T. A. S. Doherty, Y. H. Chiang, A. J. Winchester, K. W. P. Orr, J. E. Parker, P. D. Quinn, K. M. Dani, A. Rao and S. D. Stranks

2021

54.	Unraveling the varied nature and roles of defects in hybrid halide perovskites with time-resolved photoemission electron microscopy Energy Environ. Sci. 14, 6320-6328 (2021) S. Kosar, A. J. Winchester, T. A. S. Doherty, S. Macpherson, C. E. Petoukhoff, K. Frohna, M. Anaya, N. S. Chan, J. Madéo, M. K. L. Man, S. D. Stranks and K. M. Dani
53.	Visualizing superconductivity in a doped Weyl semimetal with broken inversion symmetry Phys. Rev. B 104 (11), 115102 (2021) Z. Wang, J. Olivares, H. Namiki, V. Pareek, K. M. Dani, T. Sasagawa, V. Madhavan and Y. Okada
52.	Ultrafast frequency-shift dynamics at temporal boundary induced by structural-dispersion switching of waveguides Phys. Rev. Lett. 127 (5), 053902 (2021) F. Miyamaru, C. Mizuo, T. Nakanishi, Y. Nakata, K. Hasebe, S. Nagase, Y. Matsubara, Y. Goto, J. Pérez-Urquizo, J. Madéo, and K. M. Dani
51.	The 2021 ultrafast spectroscopic probes of condensed matter roadmap J. Phys.: Condens. Matter 33 353001 (2021) J. Lloyd-Hughes, P. M. Oppeneer, T. Pereira dos Santos, A. Schleife, S. Meng, M. A. Sentef, M. Ruggenthaler, A. Rubio, I. Radu, M. Murnane, X. Shi, H. Kapteyn, B. Stadtmüller, K. M. Dani, F. H. da Jornada, E. Prinz, M. Aeschlimann, R. L. Milot, M. Burdanova, J. Boland, T. Cocker and F. Hegmann
50.	High field single- to few-cycle THz generation with lithium niobate Photonics 8 (6), 183 (2021) X. Zhu, D. R. Bacon, J. Madéo and K. M. Dani
49.	Photoconductive emitters for pulsed terahertz generation Journal of Optics 23 (6), 064001 (2021) D. R. Bacon, J. Madéo and K. M. Dani
48.	Experimental measurement of the intrinsic excitonic wave function Science Advances 7 (17), eabg0192 (2021) M. K. L. Man^†, J. Madéo^†, C. Sahoo, K. Xie, M. Campbell, V. Pareek, A. Karmakar, E L. Wong, A. Al-Mahboob, N. S. Chan, D. R. Bacon, X. Zhu, M. M. M. Abdelrasoul, X. Li, T. F. Heinz, F. H. da Jornada, T. Cao, and K. M. Dani ^†These authors contributed equally to this work. Featured: Scientists capture first ever image of an electron's orbit within an exciton Phys.Org April 21 (2021) OIST
47.	Visualization of two-dimensional transition dipole moment texture in momentum space using high-harmonic generation spectroscopy Physical Review B 103, L161406 (2021) K. Uchida, V. Pareek, K. Nagai, K. M. Dani, and K. Tanaka
46.	Monolithic patch-antenna THz lasers with extremely low beam divergence and polarization control ACS Photonics 8 (2), 412 (2021) J. Pérez-Urquizo, Y. Todorov, L. Li, A. G. Davies, E. H. Linfield, C. Sirtori, J. Madéo, K. M. Dani

2020

45.	Directly visualizing the momentum-forbidden dark excitons and their dynamics in atomically thin semiconductors Science 370 (6521), 1199 (2020) (Reprint) J. Madéo^†, M. K. L. Man^†, C. Sahoo, M. Campbell, V. Pareek, E L. Wong, A. Al-Mahboob, N. S. Chan, A. Karmakar, B. M. K. Mariserla, X. Li, T. F. Heinz, T. Cao, and K. M. Dani ^†These authors contributed equally to this work. Perspective: Probing the dark side of the exciton Science 370 (6521), 1166 (2020) M. X. Na, Z. Ye Featured: Photoelectrons shine a light on dark excitons Phys. Today 74 16–18 (2021) C. Middleton
44.	Strong plasmon-exciton coupling in Ag nanoparticle - conjugated polymer core-shell hybrid nanostructures Polymers 12 (9), 2141 (2020) C. E. Petoukhoff, K. M. Dani, and D. M. O'Carroll
43.	Photoconductive arrays on insulating substrates for high-field terahertz generation Optics Express 28 (12), 17219 (2020) D. R. Bacon, T. B. Gill, M. Rosamond, A. D. Burnett, A. Dunn, L. Li, E. H. Linfield, A. G. Davies, P. Dean, and J. R. Freeman
42.	Examining the surface phase diagram of IrTe₂ with photoemission Phys. Rev. B 101, 235120 (2020) M. Rumo, C. W. Nicholson, A. Pulkkinen, B. Hildebrand, G. Kremer, B. Salzmann, M.-L. Mottas, K. Y. Ma, E L. Wong, M. K. L. Man, K. M. Dani, B. Barbiellini, M. Muntwiler, T. Jaouen, F. O. von Rohr, and C. Monney
41.	Performance-limiting nanoscale trap clusters at grain junctions in halide perovskites Nature 580, 360 (2020) T. A. S. Doherty^†, A. J. Winchester^†, S. Macpherson, D. N. Johnstone, V. Pareek, E. M. Tennyson, S. Kosar, F. U. Kosasih, M. Anaya, M. Abdi-Jalebi, Z. Andaji-Garmaroudi, E L. Wong, J. Madéo, Y.-H. Chiang, J.-S. Park, Y.-K. Jung, C. E. Petoukhoff, G. Divitini, M. K. L. Man, C. Ducati, A. Walsh, P. A. Midgley, K. M. Dani^‡, and S. D. Stranks^‡ ^†These authors contributed equally to this work. ^‡Co-corresponding authors.
40.	"Investigation of nanoscale energy transport with time-resolved photoemission electron microscopy" Nanoscale Energy Transport, edited by B. Liao (IOP Publishing Ltd, 2020), pp.10-1 - 10-33 [Book Chapter] R. Wong, M. K. L. Man, and K. M. Dani
39.	Ultrafast control of the dimensionality of exciton-exciton annihilation in atomically thin black phosphorus Phys. Rev. Lett. 124, 057403 (2020) V. Pareek, J. Madéo, and K. M. Dani

2019

38.

Improving signal and photobleaching characteristics of temporal focusing microscopy with the increase in pulse repetition rate

Methods Protoc. 2, 65 (2019)

V. Lisicovas, B. M. K. Mariserla, C. Sahoo, R. T. Harding, M. K. L. Man, E L. Wong, J. Madéo, and K. M. Dani

37.

Charge transfer dynamics in conjugated polymer/MoS₂ organic/2D heterojunctions

Mol. Syst. Des. Eng. 4, 929 (2019)

C. E. Petoukhoff, S. Kosar, M. Goto, I. Bozkurt, M. Chhowalla, and K. M. Dani

2018

36.	Ultrafast dynamics and subwavelength periodic structure formation following irradiation of GaAs with femtosecond laser pulses Phys. Rev. B 98, 224103 (2018) A. Margiolakis, G. D. Tsibidis, K. M. Dani, and G. P. Tsironis
35.	Directly photoexcited Dirac and Weyl fermions in ZrSiS and NbAs Appl. Phys. Lett. 113, 221906 (2018) C. P. Weber, L. M. Schoop, S. S. P. Parkin, R. C. Newby, A. Nateprov, B. Lotsch, B. M. K. Mariserla, J. M. Kim, K. M. Dani, H. A. Bechtel, E. Arushanov, and M. Ali
34.	Using coherent phonons for ultrafast control of the Dirac node of SrMnSb₂ Phys. Rev. B 98, 155115 (2018) C. P. Weber, M. G. Masten, T. C. Ogloza, B. S. Berggren, M. K. L. Man, K. M. Dani, J. Liu, Z. Mao, D. D. Klug, A. A. Adeleke, and Y. Yao
33.	Pulling apart photoexcited electrons by photoinducing an in-plane surface electric field Science Advances 4, eaat9722 (2018) E L. Wong, A. J. Winchester, V. Pareek, J. Madéo, M. K. L. Man, and K. M. Dani
32.	Terahertz photoconductivity and photocarrier dynamics in few-layer hBN/WS₂ van der Waals heterostructure laminates Semicond. Sci. Tech. 33, 084001 (2018) M. B. M. Krishna, J. Madéo, J. P. Urquizo, X. Zhu, S. Vinod, C. S. Tiwary, P. M. Ajayan, and K. M. Dani
31.	Symmetry and optical selection rules in graphene quantum dots Phys. Rev. B 97, 115404 (2018) R. Pohle, E. G. Kavousanaki, K. M. Dani, and N. Shannon
30.	High-temperature terahertz optical diode effect without magnetic order in polar FeZnMo₃O₈ Phys. Rev. Lett. 120, 037601 (2018) S. Yu, B. Gao, J. W. Kim, S.-W. Cheong, M. K. L. Man, J. Madéo, K. M. Dani, and D. Talbayev

2017

29.	Similar ultrafast dynamics of several dissimilar Dirac and Weyl semimetals J. Appl. Phys. 122, 223102 (2017) C. P. Weber, B. S. Berggren, M. G. Masten, T. C. Ogloza, S. Deckoff-Jones, J. Madéo, M. K. L. Man, K. M. Dani, L. Zhao, G. Chen, J. Liu, Z. Mao, L. M. Schoop, B. V. Lotsch, S. S. P. Parkin, and M. Ali
28.	Terahertz-frequency magnetoelectric effect in Ni-doped CaBaCo₄O₇ Phys. Rev. B 96, 094421 (2017) S. Yu, C. Dhanasekhar, V. Adyam, S. Deckoff-Jones, M. K. L. Man, J. Madéo, E L. Wong, T. Harada, M. B. M. Krishna, K. M. Dani, and D. Talbayev
27.	Engineering the losses and beam divergence in arrays of patch antenna microcavities for terahertz sources J. Infrared Milli. Terahz. Waves 38, 1321 (2017) J. Madéo, J. Pérez-Urquizo, Y. Todorov, C. Sirtori, and K. M. Dani
26.	Commentary: Pursuing science across nationalities and disciplines Physics Today 70, 10 (2017) K. M. Dani
25.	Obtaining cross-sections of paint layers in cultural artifacts using femtosecond pulsed lasers Materials 10, 107 (2017) T. Harada^†, S. Spence^†, A. Margiolakis, S. Deckoff-Jones, R. Ploeger, A. N. Shugar, J. F. Hamm, K. M. Dani and A. R. Dani ^†These authors contributed equally to this work.
24.	Imaging the motion of electrons across semiconductor heterojunctions Nat. Nanotechnol. 12, 36 (2017) M. K. L. Man, A. Margiolakis, S. Deckoff-Jones, T. Harada, E L. Wong, M. B. M. Krishna, J. Madéo, A. Winchester, S. Lei, R. Vajtai, P. M. Ajayan and K. M. Dani News & Views: Photovoltaics in action Nat. Nanotechnol. 12, 3 (2017) Hrvoje Petek

2016

23.	Jahn-Teller-induced femtosecond electronic depolarization dynamics of the nitrogen-vacancy defect in diamond Nat. Commun. 7, 13510 (2016) R. Ulbricht, S. Dong, I. Y. Chang, B. M. K. Mariserla, K. M. Dani, K. Hyeon-Deuk, and Z. H. Loh
22.	Ultrafast charge transfer and enhanced absorption in MoS₂ - organic van der Waals heterojunctions using plasmonic metasurfaces ACS Nano 10, 9899 (2016) C. E. Petoukhoff, M. B. M. Krishna, D. Voiry, I. Bozkurt, S. Deckoff-Jones, M. Chhowalla, D. M. O'Carroll, and K. M. Dani
21.	Interfacing with neural activity via femtosecond laser stimulation of drug encapsulating liposomal nanostructures eNeuro 3, e0107 (2016) T. Nakano, S. M. Mackay, E. W. Tan, K. M. Dani, and J. Wickens
20.	Patch antenna microcavity terahertz sources with enhanced emission Appl. Phys. Lett. 109, 141103 (2016) J. Madéo, Y. Todorov, A. Gilman, G. Frucci, L. H. Li, A. G. Davies, E. H. Linfield, C. Sirtori, and K. M. Dani
19.	Observing the interplay between surface and bulk optical nonlinearities in thin van der Waals crystals Sci. Rep. 6, 22620 (2016) S. Deckoff-Jones, J. Zhang, C. E. Petoukhoff, M. K. L. Man, S. Lei, R. Vajtai, P. M. Ajayan, D. Talbayev, J. Madéo, and K. M. Dani
18.	Protecting the properties of monolayer MoS₂ on silicon based substrates with an atomically thin buffer Sci. Rep. 6, 20890 (2016) M. K. L. Man, S. Deckoff-Jones, A. Winchester, G. Shi, G. Gupta, A. D. Mohite, S. Kar, E. Kioupakis, S. Talapatra, and K. M. Dani
17.	Oxidation of planar and plasmonic Ag surfaces by exposure to O₂/Ar plasma for organic optoelectronic applications MRS Advances 1, 943 (2016) C. E. Petoukhoff, C. Antonick, B. M. K. Mariserla, K. M. Dani, and D. M. O'Carroll

2015

16.	Chemical vapor deposition synthesized atomically-thin Molybdenum Disulfide with optoelectronic-graded crystalline quality ACS Nano 9, 8822 (2015) I. Bilgin, F. Kiu, A. Vargas. A. Winchester, M. K. L. Man, M. Upmanyu, K. M. Dani, G. Gupta, S. Talapatra, A. D. Mohite, and S. Kar
15.	Engineering photophenomena in large, three dimensional structures composed of self-assembled van der Waals heterostructure flakes Adv. Opt. Materials 3, 1551 (2015) B. M. K. Mariserla, M. K. L. Man, S. Vinod, C. Chin, T. Harada, J. Taha-Tijerina, C. S. Tiwary, P. Nguyen, P. Chang, T. N. Narayanan, A. Rubio, P. M. Ajayan, S. Talapatra, and K. M. Dani
14.	Ultrafast intrinsic photoresponse and direct evidence of sub-gap states in liquid phase exfoliated MoS₂ thin films Sci. Rep. 5, 11272 (2015) S. Ghosh, A. Winchester, B. Muchhaarla, M. Wasala, S. Feng, A. L. Elias, B. M. K. Mariserla, T. Harada, C. Chin, K. M. Dani, S. Kar, M. Terrones, and S. Talapatra
13.	Ultrafast properties of femtosecond-laser-ablated GaAs and its application to terahertz optoelectronics Opt. Lett. 40 (14), 3388-3391 (2015) J. Madéo, A. Margiolakis, Z.-Y. Zhao, P. J. Hale, M. K. L. Man, Q.-Z. Zhao, W. Peng, W.-Z. Shi and K. M. Dani
12.	Patch antenna terahertz photodetectors Appl. Phys. Lett. 106, 161102 (2015) D. Palaferri, Y. Todorov, Y. N. Chen, J. Madéo, A. Vasanelli, L. H. Li, A. G. Davies, E. H. Linfield, and C. Sirtori
11.	Optically induced magnetic moments in symmetric graphene quantum dots Phys. Rev. B 91, 035433 (2015) E. G. Kavousanaki and K. M. Dani

2014

10.	A novel drug delivery method for neuropharmacological research, using liposomes and lasers Neurotransmitter 1 (1): e424 (2014) T. Nakano, C. Chin, J. Wickens, and K. M. Dani
9.	20 THz broadband generation using semi-insulating GaAs interdigitated photoconductive antennas Optics Express 22 (21), 26358-26364 (2014) P. J. Hale, J. Madéo, C. Chin, S. S. Dhillon, J. Mangeney, J. Tignon, and K. M. Dani
8.	Mimicking subsecond neurotransmitter dynamics with femtosecond laser stimulated nanosystems Sci. Rep. 4, 5398 (2014) T. Nakano, C. Chin, D. M. A. Myint, E. W. Tan, P. J. Hale, B. M. Krishna M., J. N. J. Reynolds, J. Wickens, and K. M. Dani
7.	Quantum limit for nuclear spin polarization in semiconductor quantum dots Phys. Rev. B 89, 205302 (2014) J. Hildmann, E. Kavousanaki, G. Burkard, and H. Ribeiro

2013

Optical transmission control in graphene oxide and its organic composites with ultrashort laser pulses

Journal of Optics 16, 1-6 (2014)

B. M. K. Mariserla, N. Venktramaiah, and D. N. Rao

Fe3S4 (greigite) formation by vapor–solid reaction

Journal of Materials Chemistry A 2, 1903-1913 (2013)

E. Bauer, K. L. M. Man, A. Pavlovska, A. Locatelli, T. O. Menteş, M. A. Niño, and M. S. Altman

Influence of solvent contribution on nonlinearities of near infra-red absorbing croconate and squaraine dyes with ultrafast laser excitation

Journal of Applied Physics 114, 1-8 (2013)

B. M. K. Mariserla and D. N. Rao

2012

Intraband conductivity response in graphene observed using ultrafast infrared-pump visible-probe spectroscopy

Phys. Rev. B 86, 125403 (2012)

K. M. Dani, J. Lee, R. Sharma, A. D. Mohite, C. M. Galande, P. M. Ajayan, A. M. Dattelbaum, H. Htoon, A. J. Taylor, and R. P. Prasankumar

Signatures of spin blockade in the optical response of a charged quantum dot

Phys. Rev. B 86, 045122 (2012)

E. G. Kavousanaki and G. Burkard

Tracing ultrafast separation and coalescence of carriers in graphene with time-resolved photoemission

J. of Phys. Chemistry Lett. 3, 64-68 (2012)

S. Gilbertson, G. L. Dakovski, T. Durakiewics, J. Zhu, K. M. Dani, A. D. Mohite, A. M. Dattelbaum, and G. Rodriguez