68.Ultrasensitive Ultraviolet Chiral Plasmonic Biosensor Based on Passivated Al Shells
S. Huang, S Wang, X Yang, E. Goerlitzer, J Peng*, Z Liu, R Chikkaraddy, J Du, N Vogel, Y Hou*
ACS Appl. Mater. Interfaces (2025) 17, 19, 28532-28540; DOI: 10.1021/acsami.5c02061
67. Extreme Optical Chirality from Plasmonic Nanocrystals on a Mirror
Y Hou*, X Yang, S Hu, Q LinJie, Z Peng, C Guo, S Huang, L Ren, A Sánchez-Iglesias, R Chikkaraddy*, J Baumberg*
Nano Lett. (2025) 25, 3, 1158–1164; DOI:10.1021/acs.nanolett.4c05668
66. Mapping and Optically Writing Nanogap Inhomogeneities in 1-D Extended Plasmonic Nanowire-on-Mirror Cavities [PDF]
C. Taneja, G.V.P. Kumar, J. J. Baumberg and R. Chikkaraddy*
ACS Phot. (2024) 11, 12, 5205-5214; DOI:10.1021/acsphotonics.4c01443 *Special Issue 'Rising Stars in Photonics*
65. Single molecule ready to couple [PDF]
R. Chikkaraddy
Nat. Phys. (2024) 20, 694-695; DOI:10.1038/s41567-024-02494-0
64. Electrochemically Switchable Multimode Strong Coupling in Plasmonic Nanocavities [PDF]
Y. Yang, R. Chikkaraddy, Q. Lin, DDA Clarke, D. Wigger, J. J. Baumberg and O. Hess
Nano Lett. (2024) 24, 1, 238-244; DOI:10.1021/acs.nanolett.3c03814
63. Metal to insulator transition for conducting polymers in plasmonic nanogaps [PDF]
Y. Xiong, R. Chikkaraddy, C. Readman, S. Hu, K. Xiong, J. Peng, Q. Lin and J. J. Baumberg
Light Sci Appl. (2024) 13, 3; DOI:10.1038/s41377-023-01344-7
62. Stepwise colloidal lithography toward scalable and various planar chiral metamaterials
Y. Liu, F. Chen, Q. Lin, R. Chikkaraddy, S. Huang, S. Xian, Y. Hou, J. Du, L. Xia and C. Du
Rare Metals (2024) 43, 723-735; DOI:10.1007/s12598-023-02420-y
D. Aligholizadeh, Y. Tewala, K. Langford, N. Hondrogiannis, R. Chikkaraddy, and M.S. Devadas
Vibrational Spectroscopy (2023) 129, 103616; DOI:10.1016/j.vibspec.2023.103616
60. Raman-probing the local ultrastrong coupling of vibrational plasmon-polaritons on metallic gratings [PDF]
R. Arul, K. Menghrajani, M.S. Rider, R. Chikkaraddy, W.L. Barnes and J. J. Baumberg
Phy. Rev. Lett. (2023) 131, 126902; DOI:10.1103/PhysRevLett.131.126902
59. Single-molecule mid-infrared spectroscopy and detection through vibrationally assisted luminescence [PDF]
R. Chikkaraddy*, R. Arul, L.A. Jakob and J. J. Baumberg
Nat. Phot. (2023) 17, 865-871; DOI: 10.1038/s41566-023-01263-4
58. Amplified Plasmonic Forces from DNA Origami-Scaffolded Single Dyes in Nanogaps [PDF]
S. Rocchetti, A. Ohmann, R. Chikkaraddy, G. Kang, U. F. Keyser and J. J. Baumberg
Nano Lett. (2023) 23, 13, 5959-5966 DOI: 10.1021/acs.nanolett.3c01016
57. Boosting Optical Nanocavity Coupling by Retardation Matching to Dark Modes [PDF]
R. Chikkaraddy, J. Huang, D. Kos, E. Elliott, M. Kamp, C.Guo, J. J. Baumberg and B. de. Nijs
ACS Photonics (2023) 10, 2, 493-499; DOI:10.1021/acsphotonics.2c01603
56. Tracking Water Dimers in Ambient Nanocapsules by Vibrational Spectroscopy [PDF]
A.Y. Hwang, R. Chikkaraddy, R. Grys, O. Scherman, J. J. Baumberg, and B. de. Nijs
PNAS (2022) 119, e2212497119; DOI:/10.1073/pnas.2212497119
55. Chiral Plasmonic Shells: High-Performance Metamaterials for Sensitive Chiral Biomolecule Detection [PDF]
X. Yang, S. Huang, R. Chikkaraddy, E.S.A. Goerlitzer, F. Chen, J. Du, N. Vogel, T. Weiss, J. J. Baumberg, and Y. Hou
ACS Appl. Mater. Interfaces (2022) 14, 47, 53183-53192 ; DOI:10.1021/acsami.2c16752
54. Giant mid-IR resonant coupling to molecular vibrations in sub-nm gaps of plasmonic multilayer metafilms [PDF]
R. Arul, D. Benjamin-Grys, R. Chikkaraddy, N.S. Mueller, A. Xomalis, E. Miele, T.G. Euser, and J. J. Baumberg
Light Sci Appl. (2022) 11, 281; DOI:10.1038/s41377-022-00943-0
53. Mid-infrared-perturbed Molecular Vibrational Signatures in Plasmonic Nanocavities [PDF]
R. Chikkaraddy*, A. Xomalis, L.A. Jakob and J. J. Baumberg
Light Sci Appl. (2022) 11, 19; DOI:10.1038/s41377-022-00709-8
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52. Detecting mid-infrared light by molecular frequency upconversion with dual-wavelength hybrid nanoantennas [PDF]
A. Xomalis, X. Zheng, R. Chikkaraddy, Z. Koczor-Benda, E. Miele, E. Rosta, G.A.E. Vandenbosch, A. Martínez, and J. J. Baumberg
Science (2021) 374, 1268-1271; DOI:10.1126/science.abk2593
51. A highly stable, nanotube-enhanced, CMOS-MEMS thermal emitter for mid-IR gas sensing [PDF]
D. Popa, R. Hopper, S.Z. Ali, M.T.Cole, Y. Fan, V.Veigang-Radulescu, R. Chikkaraddy, J. Nallala, Y. Xing, J. Alexander-Webber, S. Hofmann, A.D. Luca, j.W. Gardner and F. Udrea
Scientific Reports (2021) 11, 22915; DOI: 10.1038/s41598-021-02121-5
50. Locating Single-Atom Optical Picocavities Using Wavelength-Multiplexed Raman Scattering [PDF]
J. Griffiths, B. de Nijs, R. Chikkaraddy and J. J. Baumberg
ACS Photonics (2021) 8, 10, 2868-2875; DOI: 10.1021/acsphotonics.1c01100
49. Accessing Plasmonic Hotspots using Nanoparticle-on-Foil Constructs [PDF]
R. Chikkaraddy* and J. J. Baumberg
ACS Photonics (2021) 8, 9, 2811-2817; DOI:10.1021/acsphotonics.1c01048
48. Resolving sub-angstrom ambient motion through reconstruction from vibrational spectra [PDF]
J. Griffiths, T. Földers, B. de Nijs, R. Chikkaraddy D. Wright, W.M. Deacon, D. Berta, C. Readman, D. Grys, E. Rosta and J. J. Baumberg
Nat. Commun. (2021) 12, 6759; DOI:10.1038/s41467-021-26898-1
47. Nanoparticle surfactants for kinetically-arrested photoactive assemblies to track light-induced electron transfer [PDF]
K. Sokolowski, J. Huang, T. Foldes, J. McCune, D. Xu, B. de Nijs, R. Chikkaraddy, S. Collins, E. Rosta, J.J. Baumberg, and O. Scherman
Nat. Nano. (2021) 16, 10, 1121-1129 ; DOI:10.1038/s41565-021-00949-6
46. Interfering Plasmons in Coupled Nanoresonators to Boost Light Localization and SERS [PDF]
A. Xomalis, X. Zheng, A. Demetriadou, A. Martínez, R. Chikkaraddy, and J.J. Baumberg
Nano Lett. (2021) 21, 6, 2512-2518 ; DOI: 10.1021/acs.nanolett.0c04987
45. Plasmon-induced Trap State Emission from Single Quantum Dots [PDF]
J. Huang, O.S. Ojambati, R. Chikkaraddy, K. Sokołowski, Q. Wan, C. Durkan, O.A. Scherman, and J.J. Baumberg
Phys. Rev. Lett. (2021) 126, 047402; DOI: 10.1103/PhysRevLett.126.047402
44. Fully-printed Flexible Plasmonic Metafilms with Directional Color Dynamics [PDF]
J. Peng, H. Jeong, M. Smith, R. Chikkaraddy, Q. Lin, H. Liang, M.F.L. De Volder, S. Vignolini, S. Kar-Narayan, and J.J. Baumberg
Adv. Sci. (2021) 8, 2, 2002419; DOI: 10.1002/advs.202002419
43. Eliminating Irreproducibility in SERS Substrates [PDF]
D-B. Grys, R. Chikkaraddy, M. Kamp, O.A. Scherman, J.J. Baumberg, and B. de Nijs
J Raman Spectrosc. (2021) 52, 2, 412-419; DOI: 10.1002/jrs.6008
42. Dynamics of Deterministically Positioned Single‐bond Surface‐enhanced Raman Scattering from DNA Origami Assembled in Plasmonic Nanogaps [PDF]
R Chikkaraddy*, V.A.Turek, Q. Lin, J. Griffiths, B. de Nijs, U.F. Keyser, and J.J. Baumberg
J Raman Spectrosc. (2021) 52, 2, 348-352 ; DOI: 10.1002/jrs.5997
41. Microcavity-like exciton-polaritons can be the primary photoexcitation in bare organic semiconductors [PDF]
R. Pandya, R. Chen, Q. Gu, J. Sung, C. Schnedermann, O.S. Ojambati, R. Chikkaraddy,..., P. Kukura, A.J. Musser, and A. Rao
Nat. Comm. (2021) 12, 6519; DOI: 10.1038/s41467-021-26617-w
40. Breaking the Selection Rules of Spin-Forbidden Molecular Absorption in Plasmonic Nanocavities [PDF]
O.S. Ojambati, W.M. Deacon, R. Chikkaraddy, C. Readman, Q. Lin, Z. Koczor-Benda, E. Rosta, O.A. Scherman, and J.J. Baumberg
ACS Photonics (2020) 7, 9, 2337-2342; DOI: 10.1021/acsphotonics.0c00732
39. Controlling Optically-Driven Atomic Migration Using Crystal-Facet Control in Plasmonic Nanocavities [PDF]
A. Xomalis, R. Chikkaraddy, E. Oksenberg, I. Shlesinger, J. Huang, E.C. Garnett, A.F. Koenderink, and J.J. Baumberg
ACS Nano (2020) 14, 8, 10562-10568; DOI: 10.1021/acsnano.0c04600
38. Cascaded Nanooptics to Probe Microsecond Atomic-scale Phenomena [PDF]
M. Kamp, B. de Nijs, N. Kongsuwan, M. Saba, R. Chikkaraddy, C.A. Readman, W.M. Deacon, J. Griffiths, S.J. Barrow, O.S. Ojambati, D. Wright, J. Huang, O. Hess, O.A. Scherman, and J.J. Baumberg
PNAS (2020) 117, (26), 14819-14826; DOI: 10.1073/pnas.1920091117
37. Efficient Generation of Two-photon Excited Phosphorescence from Molecules in Plasmonic Nanocavities [PDF]
O.S. Ojambati, R. Chikkaraddy, W.M. Deacon, J. Huang, D. Wright, and J.J. Baumberg
Nano Lett. (2020) 20, 6, 4653-4658 ; DOI: 10.1021/acs.nanolett.0c01593
36. Nanometer Control in Plasmonic Systems through Discrete Layer-By-Layer Macrocycle-Cation Deposition [PDF]
S.J. Barrow, A. Palma, B. de Nijs, R. Chikkaraddy, R. Bowman, J.J. Baumberg, and O. Scherman
Nanoscale (2020) 12, 8706-8710; DOI: 10.1039/D0NR00902D
35. Out-of-Plane Nanoscale Reorganization of Lipid Molecules and Nanoparticles Revealed by Plasmonic Spectroscopy [PDF]
M. Cheetham, J. Griffiths, B. de Nijs, G. Heath, S. Evans, J.J. Baumberg, and R. Chikkaraddy*
J. Phys. Chem. Lett. (2020) 11, 2875-2282; DOI: 10.1021/acs.jpclett.0c00182
Biophys. J (2020) 118 (3), 87a
34. Flickering nm-scale Disorder in a Crystal Lattice Tracked by Plasmonic ‘Flare’ Light Emission [PDF]
C. Carnegie, M. Urbieta, R. Chikkaraddy, B. de Nijs, J. Griffiths, W. Deacon, M. Kamp, N. Zabala, J. Aizpurua, and J.J. Baumberg
Nat. Commun. (2020) 11:682; DOI: 10.1038/s41467-019-14150
33. Nanoscopy through a Plasmonic Nano-lens [PDF]
M. Horton, O. Ojambati, R. Chikkaraddy, W. Deacon, N. Kongsuwan, A. Demetriadou, O. Hess, and J.J. Baumberg
PNAS (2020) 117, 2275-2281; DOI: 10.1073/pnas.1914713117
32. Plasmonic Nanocavity Modes: From Near-field to Far-field Radiation [PDF]
N. Kongsuwan, A. Demetriadou, M. Horton, R. Chikkaraddy, J.J. Baumberg, and O. Hess
ACS Photonics (2020) 7, 2, 463-471; DOI: 10.1021/acsphotonics.9b01445
31. Inhibiting Analyte Theft in Surface-Enhanced Raman Spectroscopy Substrates: Subnanomolar Quantitative Drug Detection [PDF]
B. de Nijs, C. Carnegie, I. Szabo, D-B. Grys, R. Chikkaraddy, M. Kamp, Steven J. Barrow, C. Readman, M-E. Kleemann, O.A. Scherman, E. Rosta, and J.J. Baumberg
ACS Sens. (2019) 4, 11, 2988-2996; DOI: 10.1021/acssensors.9b01484
30. Quantum Electrodynamics at Room Temperature Coupling a Single Vibrating Molecule with a Plasmonic Nanocavity [PDF]
O.S. Ojambati, R. Chikkaraddy, W. Deacon, M. Horton, D. Kos, V.A. Turek, U.F. Keyser, and J. J. Baumberg
Nat. Commun. (2019) 10, 1049; DOI: 10.1038/s41467-019-08611-5
31. Inhibiting Analyte Theft in Surface-Enhanced Raman Spectroscopy Substrates: Subnanomolar Quantitative Drug Detection [PDF]
B. de Nijs, C. Carnegie, I. Szabo, D-B. Grys, R. Chikkaraddy, M. Kamp, Steven J. Barrow, C. Readman, M-E. Kleemann, O.A. Scherman, E. Rosta, and J.J. Baumberg
ACS Sens. (2019) 4, 11, 2988-2996; DOI: 10.1021/acssensors.9b01484
30. Quantum Electrodynamics at Room Temperature Coupling a Single Vibrating Molecule with a Plasmonic Nanocavity [PDF]
O.S. Ojambati, R. Chikkaraddy, W. Deacon, M. Horton, D. Kos, V.A. Turek, U.F. Keyser, and J. J. Baumberg
Nat. Commun. (2019) 10, 1049; DOI: 10.1038/s41467-019-08611-5
29. Room-Temperature Optical Picocavities below 1 nm^3 Accessing Single-Atom Geometries
C. Carnegie, J. Griffiths, B. de Nijs, C. Readman, R. Chikkaraddy, W.M. Deacon, Y. Zhang, I. Szabó, E. Rosta, J. Aizpurua, and J.J. Baumberg
J Phys. Chem. Lett. (2018) 9, 7146; DOI: 10.1021/acs.jpclett.8b03466
28. Thermo‐Responsive Actuation of a DNA Origami Flexor
V.A Turek, R. Chikkaraddy, S. Cormier, B. Stockham, T. Ding, U.F. Keyser, and J.J Baumberg
Adv. Funct. Mater. (2018) 28, 1706410; DOI: 10.1002/adfm.201706410
R. Chikkaraddy, V.A. Turek, N. Kongsuwan, T. de Goor, A. Demetriadou, O. Hess, U.F. Keyser, and J.J Baumberg
Nano Lett. (2018) 18, 405; DOI: 10.1021/acs.nanolett.7b0428
26. Fluorescence Enhancement and Strong-coupling in Faceted Plasmonic Nanocavities
N. Kongsuwan, A. Demetriadou, R. Chikkaraddy, J.J. Baumberg, and O. Hess
EPJ Appl. Metamat. (2018) 5, 6; DOI: 10.1051/epjam/2018004
N. Kongsuwan, A. Demetriadou, R. Chikkaraddy, F. Benz, V.A. Turek, U.F. Keyser, J.J. Baumberg, and O. Hess
ACS Photonics (2018) 5, 186; DOI: 10.1021/acsphotonics.7b00668
24. Strong-coupling of WSe2 in Ultra-compact Plasmonic Nanocavities at Room Temperature
M-E. Kleemann, R. Chikkaraddy, E.M. Alexeev, D. Kos, C. Carnegie, W. Deacon, A.C. de Pury, C. Grosse, B. de Nijs, J. Mertens, A.I. Tartakovskii, and J.J. Baumberg
Nat. Commun. (2017) 8, 1296; DOI: 10.1038/s41467-017-01398-3
23. How Ultranarrow Gap Symmetries Control Plasmonic Nanocavity Modes
R. Chikkaraddy, X. Zheng, F. Benz, L.J. Brooks, B. de Nijs, C. Carnegie, M-E. Kleemann, J. Mertens, R.W. Bowman, G.A.E. Vandenbosch, V.V. Moshchalkov, and J.J. Baumberg
ACS Photonics (2017) 4, 469–475; DOI: 10.1021/acsphotonics.6b00908
22. How Light is Emitted by Plasmonic Metals
J. Mertens, M-E. Kleemann, R. Chikkaraddy, P. Narang, and J.J. Baumberg
Nano Lett. (2017) 17, 2568-2574; DOI: 10.1021/acs.nanolett.7b00332
21. Near-field Optical Drilling of Sub-λ Pits in Thin Polymer Films
T. Ding, R. Chikkaraddy, J. Mertens, and J.J. Baumberg
ACS Photonics (2017) 4, 1292–1297; DOI: 10.1021/acsphotonics.6b01000
20. Plasmonic Tunnel Junctions for Single-molecule Redox Chemistry
B. de Nijs, F. Benz, S.J. Barrow, D.O. Sigle, R. Chikkaraddy, A. Palma, C. Carnegie, M. Kamp, R. Sundararaman, P. Narang, O.A. Scherman, and J.J. Baumberg
Nat. Commun. (2017) 8, 994; DOI: 10.1038/s41467-017-00819-7
19. Mapping SERS in CB:Au Plasmonic Nano-Aggregates
C. Carnegie, R .Chikkaraddy, F. Benz, B. de Nijs, W. Deacon, M. Horton, W. Wang, C. Readman, S.J. Barrow, O.A. Scherman, and J.J. Baumberg
ACS Photonics (2017) 4, 2681; DOI: 10.1021/acsphotonics.7b00902
18. Interrogating Nanojunctions using Ultraconfined Acousto-plasmonic Coupling
W.M. Deacon, A. Lombardi, F. Benz, Y. del V-I Redondo, R. Chikkaraddy, B. de Nijs, M-E. Kleemann, J. Mertens, and J.J. Baumberg
Phys. Rev. Lett. (2017) 119, 023901; DOI: 10.1103/PhysRevLett.119.023901
17. Revealing Nanostructures through Plasmon Polarimetry
M-E. Kleemann, J. Mertens, X. Zheng, S. Cormier, V. Turek, F. Benz, R. Chikkaraddy, W. Deacon, A. Lombardi, V.V. Moshchalkov, G.A.E. Vandenbosch, and J.J. Baumberg
ACS Nano (2017) 11, 850–855; DOI: 10.1021/acsnano.6b07350
16. Smart Supramolecular Sensing with Cucurbit[n]urils: Probing Hydrogen Bonding with SERS
B. de Nijs, M. Kamp, I. Szabo, S.J. Barrow, F. Benz, G. Wu, C. Carnegie, R. Chikkaraddy, W. Wang, W. Deacon, E. Rosta, J.J. Baumberg, and O.A. Scherman
Faraday Discuss. (2017) 205, 505-515; DOI: 10.1039/C7FD00147A
15. Radiative Channeling of Nanowire Frenkel Exciton Polaritons through Surface Plasmons
R.P.N. Tripathi, A.B. Vasista, R. Chikkaraddy, and G.V.P. Kumar
Adv. Opt. Mater. (2017) 5, 1600873; DOI: 10.1002/adom.201600873
14. Single-molecule Optomechanics in ‘Picocavities’
F. Benz, M.K. Schmidt, A. Dreismann, R. Chikkaraddy, Y. Zhang, A. Demetriadou, C. Carnegie, H. Ohadi, B. de Nijs, R. Esteban, J. Aizpurua, and J.J. Baumberg
Science (2016) 354, 726–729; DOI: 10.1126/science.aah5243
13. Single-molecule Strong Coupling at Room Temperature in Plasmonic Nanocavities
R. Chikkaraddy, B. de Nijs, F. Benz, S.J. Barrow, O.A. Scherman, E. Rosta, A. Demetriadou, P. Fox, O. Hess, and J.J. Baumberg
Nature (2016) 535, 127–130; DOI:10.1038/nature17974
12. SERS of Individual Nanoparticles on a Mirror: Size does Matter, but so does Shape
F. Benz, R. Chikkaraddy, A. Salmon, H. Ohadi, B. de Nijs, J. Mertens, C. Carnegie, R.W. Bowman, and J.J. Baumberg
J Phys. Chem. Lett. (2016) 7, 2264-2269; DOI: 10.1021/acs.jpclett.6b00986
11. Anomalous Spectral Shift of Near- and Far-field Plasmonic Resonances in Nanogaps
A. Lombardi, A. Demetriadou, L. Weller, P. Andrae, F. Benz, R. Chikkaraddy, J. Aizpurua, and J.J. Baumberg
ACS Photonics (2016) 3, 471–477; DOI: 10.1021/acsphotonics.5b00707
10. Plasmon-controlled Excitonic Emission from Vertically-tapered Organic Nanowires
R. Chikkaraddy, P.P. Patra, R.P.N. Tripathi, A. Dasgupta, and G.V.P. Kumar
Nanoscale (2016) 8, 14803-14808; DOI: 10.1039/C6NR02699K
R.P.N. Tripathi, A. Dasgupta, R. Chikkaraddy, P.P. Patra, A.B. Vasista, and G.V.P. Kumar
J. Opt. (2016) 18, 065002; DOI: 10.1088/2040-8978/18/6/065002
R.P.N. Tripathi, R. Chikkaraddy, A. Dasgupta, and G.V.P. Kumar
Appl. Phys. Lett. (2016) 108, 031102; DOI: 10.1063/1.4939980
07. Large-scale Dynamic Assembly of Metal Nanostructures in Plasmofluidic Field
P.P. Patra, R. Chikkaraddy, S. Thampi, R.P.N. Tripathi, and G.V.P. Kumar
Faraday Discuss. (2016) 186: 95–106; DOI: 10.1039/C5FD00127G
06. Polarisation-selective Hotspots in Metallic Ring Stack Arrays
L. J. Brooks, J. Mertens, R. W. Bowman, R. Chikkaraddy, A. Sanders, and J.J. Baumberg
Opt. Express (2016) 24, 3663-3671; DOI: 10.1364/OE.24.003663
05. Generalized Circuit Model for Coupled Plasmonic Systems
F. Benz, B. de Nijs, C. Tserkezis, R. Chikkaraddy, D.O. Sigle, L. Pukenas, S.D. Evans, J. Aizpurua, and J.J. Baumberg
Opt. Express. (2015) 23, 33255; DOI: 10.1364/OE.23.033255
04. Unfolding the Contents of Sub-nm Plasmonic Gaps using Normalising Plasmon Resonance Spectroscopy
B. de Nijs, R.W. Bowman, L.O. Herrmann, F. Benz, S.J. Barrow, J. Mertens, D.O. Sigle, R. Chikkaraddy, A. Eiden, A. Ferrari, O.A. Scherman, and J.J. Baumberg
Faraday Discuss. (2015) 178, 185–193; DOI: 10.1039/C4FD00195H
P.P. Patra, R. Chikkaraddy, R.P.N. Tripathi, A. Dasgupta, and G.V.P. Kumar
Nat. Commun. (2014) 5, 5357; DOI: 10.1038/ncomms5357
R. Chikkaraddy, A. Dasgupta, S.D. Gupta, and G.V.P. Kumar
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R. Chikkaraddy∥, D. Singh∥, and G.V.P. Kumar
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