Prof. Dominic Zerulla Profile

Prof. Dominic Zerulla

Prof./P.I. at Univ College Dublin

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Publications (12)

Proceedings Article | 10 June 2024 Paper

High precision measurements of temperature dependent optical constants for simulation-based optimisation of plasmonic behaviour at the nanoscale

Giulia di Fazio, Silas O'Toole, Dominic Zerulla

Proceedings Volume 12991, 129910G (2024) https://doi.org/10.1117/12.3016755

KEYWORDS: Temperature metrology, Metals, Prisms, Silver, Sapphire, Plasmonics, Simulations, Electric fields, Finite element methods, Refractive index

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Proceedings Article | 10 June 2024 Paper

Enhancing sensitivity in surface plasmon resonance detection through dynamic Joule heating

Samuel Kenny, Silas O'Toole, Giulia di Fazio, Dominic Zerulla

Proceedings Volume 12991, 129910F (2024) https://doi.org/10.1117/12.3017543

KEYWORDS: Active plasmonics, Silver, Chemical elements, Modulation, Reflection, Metals, Surface plasmons, Plasmonics, Interfaces, Thin films

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Proceedings Article | 10 June 2024 Paper

Plasmonic electronically addressable super-resolution (PEAR)

Conor O'Donnell, Silas O'Toole, Dominic Zerulla

Proceedings Volume 12991, 129910M (2024) https://doi.org/10.1117/12.3016393

KEYWORDS: Active plasmonics, Modulation, Super resolution, Biological imaging, Modulation frequency, Near field, Silver, Plasmonics, Surface plasmons

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The advancement of super-resolution techniques is essential to the progress of cell and molecular biology. This work presents an overview of the fundamentals and development of Plasmonic Electronically Addressable super-Resolution (PEAR) as a novel super-resolution technique. PEAR aims to improve on limitations faced by currently established methods. PEAR uses an active plasmonic element which is modulated by passing an electric current through the nanostructure, this modulated electric current causes changes in the electrical near field at the modulation frequency. Using a homodyne detection scheme, with the modulation frequency as a reference, sub-diffraction limit spatial information can be transferred into the far field. Recording changes in the modulated light levels allows an image of a sample’s surface to be constructed. PEAR offers a unique advantage over established methods. It ties the spatial resolution of the resulting image to the physical size of the active plasmonic element which, in its simplest, form consists of a constriction in a silver thin film, allowing tuning and de-tuning of the plasmonic resonance when heated. Passing an alternating current through the nanostructure causes changes to the surface plasmon resonance condition. Hence, modulating the electric near field localized to the vicinity of the active plasmonic element experiencing Joule heating. While these changes are of the order of a few percent relative to the overall light levels, the encoded modulation allows the use of a lock-in amplifier to extract changes in the light level at the modulation frequency far below the noise floor. As fluorescent material interacts with this modulated electric near-field it will transfer local information into the far-field, which can be collected using standard optics. As the modulation is highly localized to the active plasmonic element, only the area of fluorescent material directly interacting with the active plasmonic element out-couples the light encoded with the modulation frequency. This directly connects the resolution of the imaging technique to the geometry of the active plasmonic element. By scanning a fluorescent sample over the active plasmonic element in a raster fashion, a map of the localized information is compiled to form an image of the sample’s surface. The PEAR method provides a non-destructive, bio-compatible imaging method which is operational in air, with ease of scalability into multi-channel acquisition in order to reduce acquisition time while maintaining signal to noise ratio. Combining these advantages with the ability to tie the resolution to the physical size of the active plasmonic element makes the PEAR imaging method unique among other imaging technologies at the forefront of super-resolution imaging.

Proceedings Article | 7 September 2018 Presentation + Paper

Binding energy of radial deformed single walled carbon nanotubes

Yanting Shen, Dominic Zerulla

Proceedings Volume 10731, 107310D (2018) https://doi.org/10.1117/12.2319700

KEYWORDS: Single walled carbon nanotubes, Raman spectroscopy, Carbon nanotubes, Raman scattering, Temperature metrology, Scattering, Physics, Carbon, Sensors

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Proceedings Article | 26 September 2016 Presentation + Paper

Ultra-low frequency Raman spectroscopy of SWNTs under high pressure

Y. Shen, N. Quirke, D. Zerulla

Proceedings Volume 9932, 993209 (2016) https://doi.org/10.1117/12.2236463

KEYWORDS: Raman spectroscopy, Single walled carbon nanotubes, Carbon, Polarization, Samarium, Environmental sensing, Carbon nanotubes, Chemical species, Raman scattering, Surface enhanced Raman spectroscopy

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Proceedings Article | 17 September 2016 Presentation + Paper

Nanoscale tailored plasmonic material for optimum broadband solar harvesting

Dominic Zerulla, Éadaoin McClean-Ilten

Proceedings Volume 9921, 99211Z (2016) https://doi.org/10.1117/12.2237869

KEYWORDS: Manufacturing, Solar cells, Plasmonics, Nanostructures, Absorption, Bessel functions, Silver, Interfaces, Superposition, Polarization

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Proceedings Article | 8 May 2014 Paper

Human epithelial cancer cells studied using combined AFM-IR absorption nanoimaging

Eamonn Kennedy, Rasoul Al-Majomaie, Dominic Zerulla, Mohammed Al-Rubeai, James Rice

Proceedings Volume 9129, 91291M (2014) https://doi.org/10.1117/12.2051652

KEYWORDS: Absorption, Chemical analysis, Infrared imaging, Nanoimaging, Cancer, Infrared spectroscopy, Atomic force microscopy, Infrared radiation, Diffraction, Cell mechanics

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Proceedings Article | 20 September 2013 Paper

Raman spectroscopy for intracellular localisation of meso-tetraphenylporphyrin-gold nanoparticles conjugates

Rasoul Al-Majmaie, Nebras Alattar, Eamonn Kennedy, Mohamed Al-Rubeai, James Rice, Dominic Zerulla

Proceedings Volume 8815, 88150K (2013) https://doi.org/10.1117/12.2024240

KEYWORDS: Raman spectroscopy, Nanoparticles, Surface enhanced Raman spectroscopy, Luminescence, Transmission electron microscopy, Gold, Signal to noise ratio, Microscopy, Raman scattering, Fluorescence spectroscopy

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Proceedings Article | 8 May 2012 Paper

Toluidine blue O-conjugated gold nanoparticles for photodynamic therapy of cultured colon cancer

Rasoul Al-Majmaie, Nebras Alattar, Dominic Zerulla, Mohamed Al-Rubeai

Proceedings Volume 8427, 842722 (2012) https://doi.org/10.1117/12.921813

KEYWORDS: Photodynamic therapy, Nanoparticles, Gold, In vitro testing, Colorectal cancer, Colon, Oxygen, Particles, Transmission electron microscopy, Helium neon lasers

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Proceedings Article | 18 May 2010 Paper

Investigating dye-sensitised solar cells

Laura Tobin, Thomas O'Reilly, Dominic Zerulla, John Sheridan

Proceedings Volume 7725, 77251A (2010) https://doi.org/10.1117/12.854591

KEYWORDS: Dye sensitized solar cells, Solar cells, Glasses, Solar energy, Electrodes, Coating, Silicon, Electrons, Manufacturing, Titanium dioxide

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Proceedings Article | 10 October 2009 Paper

Characterising dye-sensitized solar cells

Laura Tobin, Thomas O'Reilly, Dominic Zerulla, John Sheridan

Proceedings Volume 7416, 74161L (2009) https://doi.org/10.1117/12.826221

KEYWORDS: Solar cells, Dye sensitized solar cells, Solar energy, Silicon, Coating, Glasses, Electrodes, Semiconductors, Photovoltaics, Titanium dioxide

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Proceedings Article | 21 August 2009 Paper

The influence of light intensity, active area, and excitation wavelength on the temporal response of a dye sensitized solar cell

Thomas O'Reilly, Codrin Andrei, Jennifer O'Reilly, Dominic Zerulla

Proceedings Volume 7410, 74100L (2009) https://doi.org/10.1117/12.829394

KEYWORDS: Dye sensitized solar cells, Electrodes, Solar cells, Nanoparticles, Scanning electron microscopy, Transparent conductors, Biomimetics, Semiconductors, Electron transport, Titanium dioxide

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Showing 5 of 12 publications

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