ORCID Profile
0000-0002-4048-827X
Current Organisation
NKT Photonics A/S
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In Research Link Australia (RLA), "Research Topics" refer to ANZSRC FOR and SEO codes. These topics are either sourced from ANZSRC FOR and SEO codes listed in researchers' related grants or generated by a large language model (LLM) based on their publications.
Nanophotonics | Nanotechnology | Nanobiotechnology | Nanofabrication, Growth and Self Assembly
Expanding Knowledge in the Physical Sciences | Expanding Knowledge in the Biological Sciences | Expanding Knowledge in Technology |
Publisher: AIP Publishing
Date: 08-10-2012
DOI: 10.1063/1.4759131
Abstract: Precise emission wavelength modeling is essential for understanding and optimization of distributed feedback (DFB) lasers. An analytical approach for determining the emission wavelength based on setting the propagation constant of the Bragg condition and solving for the resulting slab waveguide mode is reported. The method is advantageous to established methods as it predicts the wavelength precisely with reduced complexity. Four-layered hybrid polymer-TiO2 first order DFB dye lasers with different TiO2 layer thicknesses are studied. Varying the TiO2 thickness from 0 nm to 30 nm changes the emission wavelength by 7 nm with compelling agreement of modeling results to experimental measurements.
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5NR01282A
Abstract: We provide a review of plasmons in tapered grooves, covering the fundamental physics, applications, synthesis, and operation methods.
Publisher: American Chemical Society (ACS)
Date: 17-10-2016
Publisher: AIP Publishing
Date: 23-07-2012
DOI: 10.1063/1.4738777
Publisher: AIP Publishing
Date: 18-08-2014
DOI: 10.1063/1.4893664
Publisher: Wiley
Date: 17-02-2010
Publisher: American Chemical Society (ACS)
Date: 28-04-2017
Abstract: The ability to handle single, free molecules in lab-on-a-chip systems is key to the development of advanced biotechnologies. Entropic confinement offers passive control of polymers in nanofluidic systems by locally asserting a molecule's number of available conformation states through structured landscapes. Separately, a range of plasmonic configurations have demonstrated active manipulation of nano-objects by harnessing concentrated electric fields. The integration of these two independent techniques promises a range of sophisticated and complementary functions to handle, for ex le, DNA, but numerous difficulties, in particular, conflicting requirements of channel size, have prevented progress. Here, we show that metallic V-groove waveguides, embedded in fluidic nanoslits, form entropic potentials that trap and guide DNA molecules over well-defined routes while simultaneously promoting photothermal transport of DNA through the losses of plasmonic modes. The propulsive forces, assisted by in-coupling to propagating channel plasmon polaritons, extend along the V-grooves with a directed motion up to ≈0.5 μm·mW
Publisher: Elsevier BV
Date: 04-2008
Publisher: AIP Publishing
Date: 10-08-2015
DOI: 10.1063/1.4928548
Abstract: Refractive index sensing plays a key role in various environmental and biological sensing applications. Here, a method is presented for measuring the absolute refractive index dispersion of liquids using an array of photonic crystal resonant reflectors of varying periods. It is shown that by covering the array with a s le liquid and measuring the resonance wavelength associated with transverse electric polarized quasi guided modes as a function of period, the refractive index dispersion of the liquid can be accurately obtained using an analytical expression. This method is compact, can perform measurements at arbitrary number of wavelengths, and requires only a minute s le volume. The ability to sense a material's dispersion profile offers an added dimension of information that may be of benefit to optofluidic lab-on-a-chip applications.
Publisher: Wiley
Date: 09-09-2013
Publisher: IOP Publishing
Date: 15-10-2010
Publisher: IOP Publishing
Date: 07-12-2006
Abstract: The miniaturization of optical devices and their integration for creating adaptive and reconfigurable photonic integrated circuits requires effective platforms and methods to control light over very short distances. We present here several techniques and objects that we have developed to harness light at the sub-micrometer scale. These new tools include planar photonic crystal on nonlinear chalcogenide glasses, tapered silica fibres, optofluidics, and optical trapping. Their association could provide the basic building blocks of completely new architectures and platforms that would have an impact on numerous applications, from optical logic to sensing.
Publisher: AIP Publishing
Date: 07-06-2010
DOI: 10.1063/1.3443718
Abstract: The influence of index contrast variations for obtaining single-mode operation and low threshold in dye doped polymer two dimensional photonic crystal (PhC) lasers is investigated. We consider lasers made from Pyrromethene 597 doped Ormocore imprinted with a rectangular lattice PhC having a cavity in the middle of the crystal structure. We demonstrate that the index contrast, neff,high/neff,low, is an essential parameter for achieving low threshold, and we identify a trade-off between low threshold and single-mode operation.
Publisher: American Chemical Society (ACS)
Date: 08-08-2017
DOI: 10.1021/ACS.NANOLETT.7B02132
Abstract: We experimentally demonstrate the interrogation of an in idual Escherichia coli cell using a nanoscale plasmonic V-groove waveguide. Several different configurations were studied. The first involved the excitation of the cell in a liquid environment because it flows on top of the waveguide nanocoupler, while the obtained fluorescence is coupled into the waveguide and collected at the other nanocoupler. The other two configurations involved the positioning of the bacterium within the nanoscale waveguide and its excitation in a dry environment either directly from the top or through waveguide modes. This is achieved by taking advantage of the waveguide properties not only for light guiding but also as a mechanical tool for trapping the bacteria within the V-grooves. The obtained results are supported by a set of numerical simulations, shedding more light on the mechanism of excitation. This demonstration paves the way for the construction of an efficient bioplasmonic chip for erse cell-based sensing applications.
Publisher: American Chemical Society (ACS)
Date: 09-01-2017
Publisher: The Optical Society
Date: 15-06-2015
DOI: 10.1364/OE.23.016529
Publisher: American Chemical Society (ACS)
Date: 24-02-2014
DOI: 10.1021/NL5002058
Publisher: AIP Publishing
Date: 17-09-2007
DOI: 10.1063/1.2785988
Abstract: We demonstrate postprocessed and reconfigurable photonic crystal double-heterostructure cavities via selective fluid infiltration. We experimentally investigate the microfluidic cavities via evanescent probing from a tapered fiber at telecommunication wavelengths. Fabry-Pérot fringes associated with modes of the induced cavity are in good agreement with the theory. We also demonstrate a cavity with quality factor Q=4300. Our defect-writing technique does not require nanometer-scale alterations in lattice geometry and may be undertaken at any time after photonic crystal waveguide fabrication.
Publisher: Wiley
Date: 30-10-2014
Abstract: Lasing emission from random cavities formed in networks of electrospun Rhodamine-doped polymer fibers is presented. Spatially resolved spectroscopy and spectral analysis prove that the observed laser emission stems from in idual ring resonators randomly distributed throughout the network. These electrospun fiber lasers represent a facile and straightforward configuration for developing novel photonic devices that may advantageously utilize the network morphology.
Publisher: Elsevier BV
Date: 05-2007
Publisher: AIP Publishing
Date: 08-06-2009
DOI: 10.1063/1.3152998
Abstract: We present a principle for the temperature stabilization of photonic crystal (PhC) cavities based on optofluidics. We introduce an analytic method enabling a specific mode of a cavity to be made wavelength insensitive to changes in ambient temperature. Using this analysis, we experimentally demonstrate a PhC cavity with a quality factor of Q≈15 000 that exhibits a temperature-independent resonance. Temperature-stable cavities constitute a major building block in the development of a large suite of applications from high-sensitivity sensor systems for chemical and biomedical applications to microlasers, optical filters, and switches.
Publisher: Wiley
Date: 16-06-2017
Publisher: Springer Science and Business Media LLC
Date: 07-2005
Publisher: IOP Publishing
Date: 21-12-2015
Start Date: 2010
End Date: 2012
Funder: EC FP7 Marie Curie International Incoming Fellowship
View Funded ActivityStart Date: 09-2015
End Date: 12-2017
Amount: $345,000.00
Funder: Australian Research Council
View Funded Activity