- Gold and Silver Nanoparticles Synthesis and Applications
- Plasmonic and Surface Plasmon Research
- Quantum Dots Synthesis And Properties
- Spectroscopy and Quantum Chemical Studies
- Diamond and Carbon-based Materials Research
- Quantum Information and Cryptography
- Advanced Fiber Laser Technologies
- Strong Light-Matter Interactions
- Nonlinear Optical Materials Studies
- Advanced biosensing and bioanalysis techniques
- Semiconductor materials and devices
- Reproductive Biology and Fertility
- Copper-based nanomaterials and applications
- Reproductive Health and Technologies
- Nanocluster Synthesis and Applications
- Water Systems and Optimization
- Magneto-Optical Properties and Applications
- Mechanical and Optical Resonators
- Advanced Thermodynamics and Statistical Mechanics
- Photonic and Optical Devices
- Gaussian Processes and Bayesian Inference
- Quantum and electron transport phenomena
- Molecular Junctions and Nanostructures
- Advanced Fiber Optic Sensors
- Atomic and Subatomic Physics Research
RMIT University
2019-2024
Quantum (Australia)
2019-2022
Monash University
2017-2020
Advanced Systems Laboratory
2017
Faculty (United Kingdom)
2017
Engineering (Italy)
2017
Australian Regenerative Medicine Institute
2017
Clayton Foundation
2017
University of Moratuwa
2015
Quantum master equations are an invaluable tool to model the dynamics of a plethora microscopic systems, ranging from quantum optics and information processing energy charge transport, electronic nuclear spin resonance, photochemistry, more. This tutorial offers concise pedagogical introduction equations, accessible broad, cross-disciplinary audience. The reader is guided through basics with hands-on examples that increase in complexity. covers essential methods such as use Lindblad...
A metal nanoparticle coupled to a semiconductor quantum dot forms tunable hybrid system which exhibits remarkable optical phenomena. Small nanoparticles possess nanocavitylike concentration capabilities due the presence of strong dipolar excitation modes in form localized surface plasmons. Semiconductor dots have luminescent widely used many applications such as biosensing. When is kept vicinity nanoparticle, dipole-dipole coupling occurs between two giving rise various signatures scattered...
Recently, many have studied various configurations of metal nanoparticle-quantum dot (MNP-QD) hybrid molecules based on different metals and tunable parameters. In this paper, we aim to incite the interest in using MNP-QD nanohybrids, which possess sensing capabilities superior those individual constituents, for applications that rely scattered light. When assessing whether a given configuration is suited an application, sometimes it hard assess pros cons against other candidates. Here...
Under aggregation-free conditions, linear relationships between longitudinal plasmonic peak intensity and temperature have been revealed for poly(<italic>N</italic>-isopropylacrylamide)-capped gold nanorods nanobipyramids.
We analytically characterize the influence of a neighboring metal nanoparticle (MNP) on behavioral trends quantum dot (QD) using generalized nonlocal optical response (GNOR) method based approach, taking MNP distance dependent modifications to QD population relaxation and dephasing rates into account. The GNOR model is recent generalization an extension hydrodynamic Drude (HDM), which goes beyond HDM by account both convection current electron diffusion in MNPs. It allows unified theoretical...
The distance-dependent interaction of an emitter with a plasmonic nanoparticle or surface forms the basis for application such systems within optoelectronics. Semiconductor quantum dots (QDs) are robust emitters due to their photostability. A key challenge is formation well-defined assemblies containing QDs and nanoparticles in high purity. Here, we present translation DNA-based self-assembly assemble metal semiconductor nanocrystals into hybrid structures. purity assemblies, including...
Metal nanoparticles (MNPs) possess optical concentration capabilities that can amplify and localize electromagnetic fields into nanometer length scales. The near-fields of MNPs be used to tailor response luminescent semiconductor quantum dots (QDs), resulting in fascinating phenomena. Plasmonic metaresonances (PMRs) form a class such events gaining increasing popularity due their promising prospects sensing switching applications. Unlike the basic excitonic plasmonic resonances MNP-QD...
Abstract The nitrogen-vacancy (NV) center in diamond is very sensitive to magnetic and electric fields, strain, temperature. In addition, it possible optically interrogate individual defects, making an ideal quantum-limited sensor with nanoscale resolution. A key limitation for the application of NV sensing optical brightness collection efficiency these defects. Plasmonic resonances metal nanoparticles have been used a variety applications increase quantum emitters, therefore are promising...
We investigate a system comprised of constellation quantum emitters interacting with localized surface plasmon mode metal nanoparticle subject to an externally applied electrostatic field. Due the strong interactions among electric field and plasmonic setup, we show that enters collective coupling regime generating polariton states when intensity is increased. This in turn enhances exciton energy transport rates between two single emitter incoherently pumped. further analyze how placement...
A hybrid nanostructure where a graphene nanoflake (GNF) is optically coupled to carbon nanotube (CNT) could potentially possess enhanced sensing capabilities compared the individual constituents whilst inheriting their high biocompatibility, favourable electrical, mechanical and spectroscopic properties. Therefore, in this paper, we investigate scattering characteristics of an all-carbon exciton-plasmon nanohybrid which was made by coupling elliptical GNF resonator semiconducting CNT gain...
We develop an analytical framework to study the influence of a weakly intercoupled in-plane spherical metal nanoparticle (MNP) assembly on coherently illuminated quantum emitter (QE). reduce expressions derived for aforementioned generic planar setup into simple and concise representing QE mediated by symmetric MNP constellation, exploiting symmetry. use recently introduced generalized nonlocal optical response (GNOR) theory that has successfully explained plasmonic experiments model MNPs in...
Quantum master equations are an invaluable tool to model the dynamics of a plethora microscopic systems, ranging from quantum optics and information processing, energy charge transport, electronic nuclear spin resonance, photochemistry, more. This tutorial offers concise pedagogical introduction equations, accessible broad, cross-disciplinary audience. The reader is guided through basics with hands-on examples that build up in complexity. covers essential methods like Lindblad equation,...
Ultra-precise readout of single nitrogen-vacancy (NV) spins holds promise for major advancements in quantum sensing, computing, and communication technologies. Here we present a rigorous open theory capable simultaneously capturing the optical, vibronic, spin interactions negatively charged NV center, both presence absence plasmonic interaction. Our is verified against existing experiments literature. We predict orders magnitude brightness contrast enhancements optically detected magnetic...
When a quantum emitter (QE) is placed in close proximity to plasmonic metal nanoparticle (MNP) within an external optical field, dipole-dipole coupling arises, resulting highly tunable hybrid nanosystem that surpasses the manipulation capabilities of individual components. These systems enable exploration and fields at intersection between classical phenomena. Theoretical models this interaction have typically been limited extreme orientations, where QE dipoles are polarised either along or...
Photoluminescent defects in diamond, like the nitrogen-vacancy (NV) color center, are at forefront of emerging optical quantum technologies. Most emit visible and near-infrared spectral region below 1000 nm (NIR-I), limiting their applications photonics, fiber communications, biology. Here, we show that nitrogen-vacancy-nitrogen ($N_2V$) which emits near-infrared-II (NIR-II, 1000-1700 nm), is ubiquitous as-synthesized processed nitrogen-doped diamond from bulk samples to nanoparticles. We...
Incubation is an extremely important phase for the success of In Vitro Fertilization (IVF) procedure. Maintaining optimum environmental conditions to promote healthy growth embryos primary responsibility IVF incubator. The major limitation among various types incubators currently available in market fluctuation following every door opening examine only one embryo, affecting all common compartment. This elevates embryo stress leading lower rates. paper outlines; incubation process, issues...
Abstract Prospects of controlling the absorption cost‐effective plasmonic metal nanoparticles (MNPs) Cu and Al using quantum emitters (QEs) are demonstrated semi‐analytically. The resulting spectra compared with commonly used noble Au Ag under similar conditions. It is observed that based exhibit largely exciton–plasmon Fano interaction signatures in addition to their spectral regions operation (lower end visible range). Furthermore, QE‐enhanced maximum (Fano maximum) nanohybrids seen...
We demonstrate the prospect of using thermoresponsive polymer capped gold nanosphere-cadmium telluride quantum dot (QD) nanohybrids for minimally invasive detection cancerous tissue and feedback control tumor temperature in localized hyperthermia therapy conducted nanorods, to minimize damage surrounding healthy tissue. Here, we use a generalized nonlocal optical response method based cavity electrodynamical formalism show that enhancement Rayleigh scattering intensity nanohybrid over...
Ultra-precise readout of single nitrogen-vacancy (NV) spins hold promise for major advancements in quantum sensing and computing technologies. We predict significant brightness contrast enhancements NV spin qubit optically detected magnetic resonance (ODMR) arising from plasmonic interaction. present a rigorous theory verified using existing measurements the literature such predictions. Plasmonic selectively manifest carefully engineered parameter regions, necessitating modelling prior to...
We present a rigorous theoretical model for the optical interaction between nitrogen-vacancy (NV) centre in diamond and plasmonic metal nanoparticle (MNP), accompanied by computationally efficient procedure to solve evolution. The proposed enables us successfully explain existing emission measurements of NV centres both presence absence nanoparticle. show that NV-plasmon provides versatile new avenue enhance control an centre. Changes MNP type size, NV-MNP separation, submerging medium...
The distance-dependent interaction of an emitter with a plasmonic nanoparticle or surface forms the basis field plexitonics. Semiconductor quantum dots (QDs) are robust emitters due to their photostability, and offer possibility understanding fundamental photophysics between one metal nanoparticle. A key enabling challenge is formation systems containing both QDs nanoparticles in high purity. We present translation DNA-based self-assembly techniques assemble semiconductor nanocrystals into...