All Outputs (54)

Plasmons Enhancing Sub-Bandgap Photoconductivity in TiO<inf>2</inf> Nanoparticles Film (2024)
Journal Article
Ibrahem, M. A., Verrelli, E., Adawi, A. M., Bouillard, J. S. G., & O’Neill, M. (2024). Plasmons Enhancing Sub-Bandgap Photoconductivity in TiO2 Nanoparticles Film. ACS Omega, 9(9), 10169–10176. https://doi.org/10.1021/acsomega.3c06932

The coupling between sub-bandgap defect states and surface plasmon resonances in Au nanoparticles and its effects on the photoconductivity performance of TiO2 are investigated in both the ultraviolet (UV) and visible spectrum. Incorporating a 2 nm go... Read More about Plasmons Enhancing Sub-Bandgap Photoconductivity in TiO<inf>2</inf> Nanoparticles Film.

Enhanced Switching in Solid Polymer Electrolyte Memristor Devices via the addition of Interfacial Barriers and Quantum Dots (2023)
Presentation / Conference Contribution
Gater, M., Adawi, A., & Kemp, N. (2023, December). Enhanced Switching in Solid Polymer Electrolyte Memristor Devices via the addition of Interfacial Barriers and Quantum Dots. Presented at NANOARCH 2023: IEEE/ACM International Symposium on Nanoscale Architectures, Dresden, Germany

We report on the electrical effects of single and double polymer (polymethacrylate) barriers on polyethylene oxide (PEO) based memristors. The single barrier device with an active layer embedded with WS2 quantum dots is also investigated. The additio... Read More about Enhanced Switching in Solid Polymer Electrolyte Memristor Devices via the addition of Interfacial Barriers and Quantum Dots.

Impact of Surface Ligand on the Biocompatibility of InP/ZnS Quantum Dots with Platelets (2023)
Journal Article
Gil, H. M., Booth, Z., Price, T. W., Lee, J., Naylor‐Adamson, L., Avery, M., Muravitskaya, A., Hondow, N., Allsup, D., Schneider, J. E., Naseem, K., Adawi, A. M., Bouillard, J. S. G., Chamberlain, T. W., Calaminus, S. D., & Stasiuk, G. J. (in press). Impact of Surface Ligand on the Biocompatibility of InP/ZnS Quantum Dots with Platelets. Small, Article 2304881. https://doi.org/10.1002/smll.202304881

InP/ZnS quantum dots (QDs) have received a large focus in recent years as a safer alternative to heavy metal-based QDs. Given their intrinsic fluorescent imaging capabilities, these QDs can be potentially relevant for in vivo platelet imaging. The In... Read More about Impact of Surface Ligand on the Biocompatibility of InP/ZnS Quantum Dots with Platelets.

Long-Range and High-Efficiency Plasmon-Assisted Förster Resonance Energy Transfer (2023)
Journal Article
Hamza, A. O., Al-Dulaimi, A., Bouillard, J. S. G., & Adawi, A. M. (2023). Long-Range and High-Efficiency Plasmon-Assisted Förster Resonance Energy Transfer. Journal of physical chemistry. C, 127(44), 21611–21616. https://doi.org/10.1021/acs.jpcc.3c04281

The development of a long-range and efficient Förster resonance energy transfer (FRET) process is essential for its application in key enabling optoelectronic and sensing technologies. Via controlling the delocalization of the donor’s electric field... Read More about Long-Range and High-Efficiency Plasmon-Assisted Förster Resonance Energy Transfer.

Magnetic Mode Coupling in Hyperbolic Bowtie Meta-Antennas (2023)
Journal Article
Ebrahimi, S., Muravitskaya, A., Adawi, A. M., Baudrion, A. L., Adam, P. M., & Bouillard, J. S. G. (2023). Magnetic Mode Coupling in Hyperbolic Bowtie Meta-Antennas. Journal of Physical Chemistry Letters, 14(35), 7824-7832. https://doi.org/10.1021/acs.jpclett.3c01620

Hyperbolic metaparticles have emerged as the next step in metamaterial applications, providing tunable electromagnetic properties on demand. However, coupling of optical modes in hyperbolic meta-antennas has not been explored. Here, we present in det... Read More about Magnetic Mode Coupling in Hyperbolic Bowtie Meta-Antennas.

Organic copolymer lasing from single defect microcavity fabricated using laser patterning (2023)
Journal Article
Claronino, P., Jayaprakash, R., Jessewitsch, T., Kilbride, R. C., Thornber, T., Muravitskaya, A., Oliver, R. D., Scherf, U., Bouillard, J. S. G., Adawi, A. M., & Lidzey, D. G. (2023). Organic copolymer lasing from single defect microcavity fabricated using laser patterning. Journal of Materials Chemistry C, https://doi.org/10.1039/d2tc05360h

Reducing the lasing threshold in optically pumped organic lasers is a necessary component of the drive to develop an organic laser diode, as this may help mitigate the losses associated with electrical contacts and charge injection. In this study we... Read More about Organic copolymer lasing from single defect microcavity fabricated using laser patterning.

Stark Effect Control of the Scattering Properties of Plasmonic Nanogaps (2022)
Journal Article
Pagnotto, D., Muravitskaya, A., Benoit, D. M., Bouillard, J. S. G., & Adawi, A. M. (2023). Stark Effect Control of the Scattering Properties of Plasmonic Nanogaps. ACS Applied Optical Materials, 1(1), 500–506. https://doi.org/10.1021/acsaom.2c00135

The development of actively tunable plasmonic nanostructures enables real-time and on-demand enhancement of optical signals. This is an essential requirement for a wide range of applications such as sensing and nanophotonic devices. Here we show that... Read More about Stark Effect Control of the Scattering Properties of Plasmonic Nanogaps.

Capacitive effects and memristive switching in three terminal multilayered MoS 2 devices (2022)
Presentation / Conference Contribution
Gater, M., Adawi, A. M., & Kemp, N. T. (2022, May). Capacitive effects and memristive switching in three terminal multilayered MoS 2 devices. Presented at 2022 IEEE International Symposium on Circuits and Systems (ISCAS), Austin, Texas

We report on the electrical properties of gated two-terminal multilayered molybdenum disulfide (MoS2) memristor devices having a planar architecture. The approach based on highly dispersed MoS2 flakes drop cast onto a bottom gated Si/SiO2 (100nm) waf... Read More about Capacitive effects and memristive switching in three terminal multilayered MoS 2 devices.

Using adsorption kinetics to assemble vertically aligned nanorods at liquid interfaces for metamaterial applications (2022)
Journal Article
Morgan, S. O., Muravitskaya, A., Lowe, C., Adawi, A. M., Bouillard, J. G., Horozov, T. S., Stasiuk, G. J., & Buzza, D. M. (2022). Using adsorption kinetics to assemble vertically aligned nanorods at liquid interfaces for metamaterial applications. Physical chemistry chemical physics : PCCP, 24, 11000-11013. https://doi.org/10.1039/d1cp05484h

Vertically aligned monolayers of metallic nanorods have a wide range of applications as metamaterials or in surface enhanced Raman spectroscopy. However the fabrication of such structures using current top-down methods or through assembly on solid su... Read More about Using adsorption kinetics to assemble vertically aligned nanorods at liquid interfaces for metamaterial applications.

Persistent near-infrared photoconductivity of ZnO nanoparticles based on plasmonic hot charge carriers (2022)
Journal Article
Ibrahem, M. A., Verrelli, E., Cheng, F., Adawi, A. M., Bouillard, J. S. G., & O'Neill, M. (2022). Persistent near-infrared photoconductivity of ZnO nanoparticles based on plasmonic hot charge carriers. Journal of applied physics, 131(10), Article 103103. https://doi.org/10.1063/5.0079006

We report on the coupling of ZnO nanoparticles with plasmonic gold nanoislands in a solution-processed photodetector, which results in a clear enhancement in the optical absorption and the electrical responsivity of ZnO nanoparticles, to cover the vi... Read More about Persistent near-infrared photoconductivity of ZnO nanoparticles based on plasmonic hot charge carriers.

Förster Resonance Energy Transfer Rate and Efficiency in Plasmonic Nanopatch Antennas (2022)
Journal Article
Hamza, A. O., Bouillard, J. S. G., & Adawi, A. M. (in press). Förster Resonance Energy Transfer Rate and Efficiency in Plasmonic Nanopatch Antennas. Chemphotochem, https://doi.org/10.1002/cptc.202100285

Successful control of Förster resonance energy transfer (FRET) through the engineering of the local density of optical states (LDOS) will allow us to develop novel strategies to fully exploit this phenomenon in key enabling technologies. Here we pres... Read More about Förster Resonance Energy Transfer Rate and Efficiency in Plasmonic Nanopatch Antennas.

Polarization tuning of an H1 organic–inorganic nano-cavity (2021)
Journal Article
Murshidy, M. M., Adawi, A. M., Fry, P. W., & Lidzey, D. G. (2021). Polarization tuning of an H1 organic–inorganic nano-cavity. Journal of applied physics, 129(20), Article 203103. https://doi.org/10.1063/5.0050458

We investigate the optical properties of the dipole-like modes of an H1 nano-cavity consisting of a single missing airhole imbedded into a triangular two-dimensional silicon nitride (Si3N4) based photonic crystal coated with a red-fluorescent molecul... Read More about Polarization tuning of an H1 organic–inorganic nano-cavity.

Adsorption trajectories of nonspherical particles at liquid interfaces (2021)
Journal Article
Buzza, D. M. A., Stasiuk, G. J., Horozov, T. S., Adawi, A. M., Bouillard, J.-S. G., Lowe, C., Fox, J., & Morgan, S. O. (2021). Adsorption trajectories of nonspherical particles at liquid interfaces. Physical Review E, 103(4), Article 042604. https://doi.org/10.1103/PhysRevE.103.042604

The adsorption of colloidal particles at liquid interfaces is of great importance scientifically and industrially, but the dynamics of the adsorption process is still poorly understood. In this paper we use a Langevin model to study the adsorption dy... Read More about Adsorption trajectories of nonspherical particles at liquid interfaces.

Förster resonance energy transfer and the local optical density of states in plasmonic nanogaps (2021)
Journal Article
Hamza, A. O., Viscomi, F. N., Bouillard, J. S. G., & Adawi, A. M. (2021). Förster resonance energy transfer and the local optical density of states in plasmonic nanogaps. Journal of Physical Chemistry Letters, 12(5), 1507-1513. https://doi.org/10.1021/acs.jpclett.0c03702

Förster resonance energy transfer (FRET) is a fundamental phenomenon in photosynthesis and is of increasing importance for the development and enhancement of a wide range of optoelectronic devices, including color-tuning LEDs and lasers, light harves... Read More about Förster resonance energy transfer and the local optical density of states in plasmonic nanogaps.

Light matter interaction in hybrid plasmonic/photonic nanogaps (2020)
Thesis
Viscomi, F. Light matter interaction in hybrid plasmonic/photonic nanogaps. (Thesis). University of Hull. https://hull-repository.worktribe.com/output/4223352

The aim of this thesis is to study the processes of light matter interaction at the nanoscale in hybrid nano gaps that are made from both metals and dielectrics. This approach enables the possibility to use both the optical properties of a dielectric... Read More about Light matter interaction in hybrid plasmonic/photonic nanogaps.

Water‐soluble rhenium clusters with triazoles: the effect of chemical structure on cellular internalization and the DNA binding of the complexes (2020)
Journal Article
Konovalov, D. I., Ivanov, A. A., Frolova, T. S., Eltsov, I. V., Gayfulin, Y. M., Plunkett, L., Bazzar, M., Adawi, A. M., Bouillard, J. S. G., Baiborodin, S. I., Sinitsyna, O. I., Kuratieva, N. V., Yanshole, V. V., Efremova, O. A., & Shestopalov, M. A. (2020). Water‐soluble rhenium clusters with triazoles: the effect of chemical structure on cellular internalization and the DNA binding of the complexes. Chemistry: a European journal, 26(61), 13904-13914. https://doi.org/10.1002/chem.202001680

Here we explore the effect of the nature of organic ligands in rhenium cluster complexes [Re6Q8L6]4− (where Q=S or Se, and L=benzotriazole, 1,2,3-triazole or 1,2,4-triazole) on the biological properties of the complexes, in particular on the cellular... Read More about Water‐soluble rhenium clusters with triazoles: the effect of chemical structure on cellular internalization and the DNA binding of the complexes.

Realisation of a sub-wavelength dimple using a 193 nm wavelength photonic nano jet (2020)
Journal Article
Al-Jarwany, Q. A., Mohammed, A. F., Hamza, A. O., Bouillard, J. S., Adawi, A. M., Pamme, N., & Walton, C. D. (2020). Realisation of a sub-wavelength dimple using a 193 nm wavelength photonic nano jet. Chemical Physics Letters, 750, Article 137400. https://doi.org/10.1016/j.cplett.2020.137400

There are many areas of research that benefit from tight focussing of light. We report experimental and computational results of a laser irradiated silica microsphere, 1 μm diameter localised on an SU-8 substrate. A single pulse from an ArF excimer l... Read More about Realisation of a sub-wavelength dimple using a 193 nm wavelength photonic nano jet.

Optical properties of nanowires based on a blend of poly (9,9-dioctylfluorene) [PFO] and poly(9,9-dioctyl fluorene-alt-benzothiadiazole) [F8BT] (2019)
Journal Article
Khalil, G. E., Adawi, A. M., & Lidzey, D. G. (2020). Optical properties of nanowires based on a blend of poly (9,9-dioctylfluorene) [PFO] and poly(9,9-dioctyl fluorene-alt-benzothiadiazole) [F8BT]. Physica E: Low-dimensional Systems and Nanostructures, 118, Article 113829. https://doi.org/10.1016/j.physe.2019.113829

Near-field and far-field optical microscopy are used to study the optical properties of nanowires based on a blend of 95% poly (9,9-dioctylfluorene) [PFO] doped with 5% poly (9,9-dioctylfluorene-alt-benzothiadiazole) [F8BT]. Single nanowires were ima... Read More about Optical properties of nanowires based on a blend of poly (9,9-dioctylfluorene) [PFO] and poly(9,9-dioctyl fluorene-alt-benzothiadiazole) [F8BT].

Long-term ambient air-stable cubic CsPbBr3 perovskite quantum dots using molecular bromine (2019)
Journal Article
Thapa, S., Bhardwaj, K., Basel, S., Pradhan, S., Eling, C. J., Adawi, A. M., Bouillard, J. S. G., Stasiuk, G. J., Reiss, P., Pariyar, A., & Tamang, S. (2019). Long-term ambient air-stable cubic CsPbBr3 perovskite quantum dots using molecular bromine. Nanoscale advances, 1(9), 3388-3391. https://doi.org/10.1039/c9na00486f

We report unprecedented phase stability of cubic CsPbBr3 quantum dots in ambient air obtained by using Br2 as halide precursor. Mechanistic investigation reveals the decisive role of temperature-controlled in situ generated, oleylammonium halide spec... Read More about Long-term ambient air-stable cubic CsPbBr3 perovskite quantum dots using molecular bromine.

Dynamic electric field alignment of metal-organic framework micro- rods (2019)
Journal Article
Cheng, F., Young, A. J., Bouillard, J.-S. G., Kemp, N. T., Guillet-Nicolas, R., Hall, C. H., Roberts, D., Jaafar, A. H., Adawi, A. M., Kleitz, F., Imhof, A., Reithofer, M.-C. R., & Chin, J. M. (2019). Dynamic electric field alignment of metal-organic framework micro- rods. Journal of the American Chemical Society, 141(33), 12989-12993. https://doi.org/10.1021/jacs.9b06320

Alignment of Metal Organic Framework (MOF) crystals has previously been performed via careful control of oriented MOF growth on substrates, as well as by dynamic magnetic alignment. We show here that microrod crystals of the MOF NU-1000 can also be d... Read More about Dynamic electric field alignment of metal-organic framework micro- rods.