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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Turnbull, Graham Alexander
University of St Andrews
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (21/21 displayed)
- 2023Manipulation of structure and optoelectronic properties through bromine inclusion in a layered lead bromide perovskitecitations
- 2023Fluorescence lifetime imaging for explosive detectioncitations
- 2021Organic photovoltaics for simultaneous energy harvesting and high-speed MIMO optical wireless communicationscitations
- 2020Correlating Phase Behavior with Photophysical Properties in Mixed‐Cation Mixed‐Halide Perovskite Thin Filmscitations
- 2019Low threshold polariton lasing from a solution-processed organic semiconductor in a planar microcavitycitations
- 2018Improved organic semiconductor explosive sensors for application on minefields
- 2017An investigation of the energy levels within a common perovskite solar cell device and a comparison of DC/AC surface photovoltage spectroscopy Kelvin Probe measurements of different MAPBI3 perovskite solar cell device structurescitations
- 2016Nanoimprinted distributed feedback lasers of solution processed hybrid perovskitescitations
- 2016Self-trapping and excited state absorption in fluorene homo-polymer and copolymers with benzothiadiazole and tri-phenylaminecitations
- 2015Microstructured organic semiconductors
- 2015Solvent immersion nanoimprint lithography of fluorescent conjugated polymerscitations
- 2013LED pumped polymer laser sensor for explosivescitations
- 2009The Development of Luminescent Concentrators for Pumping Organic Semiconductor Laserscitations
- 2005Holographic recording of sub-micron period gratings and photonic crystals in the photoresist SU8citations
- 2003Polymer laser fabricated by a simple micromolding processcitations
- 2002Optical properties of a light-emitting polymer directly patterned by soft lithographycitations
- 2002Index and relief gratings in polymer films for organic distributed feedback laserscitations
- 2002Fabrication of refractive index and relief gratings in polymer films for DFB lasers
- 2002Emission characteristics and photonic band structure of microstructured polymer lasers
- 2002Photonic band structure and emission characteristics of a metal-backed polymeric distributed feedback lasercitations
- 2000Tuneability of amplified spontaneous emission through control of the waveguide-mode structure in conjugated polymer filmscitations
Places of action
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article
Fluorescence lifetime imaging for explosive detection
Abstract
In this Letter, a time-resolved 120 × 128 pixel single-photon avalanche diode (SPAD) sensor is used in conjunction with an array of organic semiconductor films as a means of detecting the presence of explosive vapors. Using the spatial and temporal resolution of the sensor, both fluorescence intensity and fluorescence lifetime can be monitored on a pixel-by-pixel basis for each of the polymer films arranged in a 2 × 2 grid. This represents a significant improvement on similar systems demonstrated in the past, which either offer spatial resolution without the temporal resolution required to monitor lifetime or offer only a single bulk measurement of lifetime and intensity without the spatial resolution. The potential of the sensing system is demonstrated using vapors of DNT, and differing responses for each of the four polymer films is observed. This system has clear applications as the basis of a portable chemical fingerprinting tool with applications in humanitarian demining and security.