140 citations · 653 across the 18 of their papers we have counts for
18 papers
Optical Hoovering on Plasmonic Rinks
John Canning
Excitation of surface waves on conducting materials provides a near resistance-free interface capable of a material glissade either by plasmon forces or optical beam tractors. Anal…
Water Optical Nonlinearity: Explaining Anomalously Large Electro-Optic Coefficients in Poled Silica Fibres
John Canning
An explanation is offered for the large anomalous electro-optic (e.o.) effect reported by Fujiwara in 1994. It is based on the large e.o. coefficient of ordered water at an interfa…
Time-Resolved and Temperature Tuneable Measurements of Fluorescent Intensity using a Smartphone Fluorimeter
Md Arafat Hossain, John Canning, Zhikang Yu +5
A smartphone fluorimeter capable of time-based fluorescence intensity measurements at various temperatures is reported. Excitation is provided by an integrated UV LED (370 nm) and…
Micromachining structured optical fibers using focused ion beam milling
C. Martelli, P. Olivero, J. Canning +3
A focused ion beam is used to mill side holes in air-silica structured fibres. By way of example, side holes are introduced in two types of air-structured fibres (1) a photonic cry…
Air-structured optical fibre drawn from a 3D-printed preform
Kevin Cook, John Canning, Sergio Leon-Saval +5
A structured optical fibre is drawn from a 3D-printed structured preform. Preforms containing a single ring of holes around the core are fabricated using filament made from a modif…
Step-index optical fibre drawn from 3D printed preforms
Kevin CooK, Geoffrey Balle, John Canning +7
Optical fibre is drawn from a dual-head 3D printer fabricated preform made of two optically transparent plastics with a high index core (NA ~ 0.25, V > 60). The asymmetry observed…
Nanoscale changes with low temperature annealing inside composite optical fibres
Wen Liu, John Canning, Kevin Cook +1
Nanoscale glass milling with mild thermal annealing is proposed and shown to occur within a tri-material composite W profile optical fibre.
Large dynamic range SPR measurements in the visible using a ZnSe prism
John Canning, Jing Qian, Kevin Cook
Large dynamic index measurement range (n = 1 to n = 1.7) using surface plasmon resonance (SPR) shifts is demonstrated with a ZnSe prism at 632.8 nm, limited by the available high i…
Intelligent smartphone-based portable network diagnostics for water security Case Study realtime pH mapping of tap water
Arafat Hossain, John Canning, Sandra Ast +2
Using a field-portable, smartphone fluorometer to assess water quality based on the pH response of a designer probe, a map of pH of public tap water sites has been obtained. A cust…
Near orthogonal launch of SPR modes in Au films
John Canning, Akib Karim, Nikki Tzoumis +3
We report the excitation of a surface plasmon resonance (SPR) close to the orthogonal axis of a gold (Au) film on borosilicate glass. Direct spectroscopic measurement of SPR shifts…
Lab-in-a-phone: Smartphone-based Portable Fluorometer for pH Field Measurements of Environmental Water
Md. Arafat Hossain, John Canning, Sandra Ast +3
A novel portable fluorometer combining the attributes of a smartphone with an easy fit, simple and compact sample chamber fabricated using 3D printing has been developed for pH mea…
Percolation diffusion into self-assembled mesoporous silica microfibres
John Canning, George Huyang, Miles Ma +7
Percolation diffusion into long (11.5 cm) self-assembled, ordered mesoporous microfibres is studied using optical transmission and laser ablation inductive coupled mass spectrometr…
The viscosity of silica fibres
Li-Yang Shao, John Canning, Tao Wang +2
The viscosity of an optical fibre over 1000 to 1150 °C is studied by inscribing an optical fibre Bragg grating that can withstand temperatures up to 1200 °C and monitoring fibre el…
Temperature and strain characterization of regenerated gratings
Tao Wan, Li-Yang Shao, John Canning +1
Both temperature and strain characterization of seed and regenerated gratings with and without post-annealing is reported. The high temperature regeneration has significant impact…
Tailoring surface interactions, contact angles, drop topologies and self-assembly using laser irradiation
John Canning, Hadrien Weil, Masood Naqshbandi +2
UV laser irradiation (lambda = 193 nm), below and above damage thresholds, is used to both alter and pattern the surface properties of borosilicate slides to tune and control the c…
Room temperature self-assembly of mixed nanoparticles into complex material systems and devices
Masood Naqshbandi, John Canning, Brant C. Gibson +1
The ability to manufacture nanomaterials with complex and structured composition using otherwise incompatible materials increasingly underpins the next generation of technologies.…
New theory of femtosecond induced changes and nanopore formation
John Canning, Matthieu Lancry, Kevin Cook +1
Recent results confirm the presence of molecular oxygen proving that recombination of dissociated silica bonds does not occur. This combined with the observation of nanopores withi…
Enhanced Evanescent Field Spectroscopy at Waveguide Surfaces using High Index Nano and Near-Nano Layers
John Canning, Whayne Padden, Danijel Boskovic +5
We propose and demonstrate, through simulation and experiment, how the interaction of an optical field within a waveguide designed for chemical sensing and, more generally, evanesc…