Browsing School of Physics (Scholarly Articles) by Author "|~|"
Now showing items 21-33 of 33
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Nano-sensitive optical coherence tomography
Alexandrov, Sergey; Subhash, Hrebesh M.; Zam, Azhar; Leahy, Martin (Royal Society of Chemistry, 2014)Depth resolved label-free detection of structural changes with nanoscale sensitivity is an outstanding problem in the biological and physical sciences and has significant applications in both the fundamental research and ... -
Nanosensitive optical coherence tomography for the study of changes in static and dynamic structures
Subhash, Hrebesh M.; Leahy, Martin; Alexandrov, Sergey (IOP Science, 2014-03-06)We briefly discuss the principle of image formation in Fourier domain optical coherence tomography (OCT). The theory of a new approach to improve dramatically the sensitivity of conventional OCT is described. The approach ... -
Novel approach for label free super-resolution imaging in far field
Alexandrov, Sergey; McGrath, James; Hrebesh, Subhash; Leahy, Martin (Nature Publishing Group, 2015)Progress in the emerging areas of science and technology, such as bio- and nano-technologies, depends on development of corresponding techniques for imaging and probing the structures with high resolution. Recently, the ... -
Refinement and validation of an exposure model for the pharmaceutical industry
Mc Donnell, Patricia E.; Coggins, Marie (2011)Objectives: Assessment of worker's exposure is becoming increasingly critical in the pharmaceutical industry as drugs of higher potency are being manufactured. The batch nature of operations often makes it difficult to ... -
A search for brief optical flashes associated with the SETI target KIC 8462852
Gillanders, Gary; Lang, Mark (IOP Publishing, 2016-02-18)The F-type star KIC. 8462852 has recently been identified as an exceptional target for search for extraterrestrial intelligence (SETI) observations. We describe an analysis methodology for optical SETI, which we have used ... -
A search for pulsations from Geminga above 100 GeV with VERITAS
Connolly, M.P.; Gillanders, Gary; Moriarty, P.; Lang, Mark (American Astronomical Society, 2015-02-10)We present the results of 71.6 hr of observations of the Geminga pulsar (PSR J0633+1746) with the VERITAS very-high-energy gamma-ray telescope array. Data taken with VERITAS between 2007 November and 2013 February were ... -
Tissue viability imaging of skin microcirculation following exposure to Cold Air (-110°C) and Cold Water (8°C)
Leahy, Martin (CIAFEL, 2013)Cryotherapy is currently used in various clinical, rehabilitative and sporting settings. However, very little is known regarding the impact of cooling on the microcirculatory response. Objectives: The present study sought ... -
Understanding the changes of cone reflectance in adaptive optics flood illumination retinal images over three years
Mariotti, Letizia; Devaney, Nicholas; Lombardo, Giuseppe; Lombardo, Marco (Optical Society of America, 2016)Although there is increasing interest in the investigation of cone reflectance variability, little is understood about its characteristics over long time scales. Cone detection and its automation is now becoming a fundamental ... -
Unprecedented study of the broadband emission of Mrk 421 during flaring activity in March 2010
Moriarty, P.; Gillanders, Gary; Lang, Mark (EDP Sciences, 2015-05-27)Context. Because of its proximity, Mrk 421 is one of the best sources on which to study the nature of BL Lac objects. Its proximity allows us to characterize its broadband spectral energy distribution (SED). Aims. The ... -
Validation of the inhalable dust algorithm of the Advanced REACH Tool using a dataset from the pharmaceutical industry
Mc Donnell, Patricia E.; Coggins, Marie (RSC, 2011-05-04)As it is often difficult to obtain sufficient numbers of measurements to adequately characterise exposure levels, occupational exposure models may be useful tools in the exposure assessment process. This study aims to ... -
VERITAS detection of gamma-ray flaring activity from the BL LAC object 1ES 1727+502 during bright moonlight observations
Connolly, M.P.; Gillanders, Gary; Moriarty, P.; Lang, Mark (American Astronomical Society, 2015-08-01)During moonlit nights, observations with ground-based Cherenkov telescopes at very high energies (VHEs, E > 100 GeV) are constrained since the photomultiplier tubes (PMTs) in the telescope camera are extremely sensitive ... -
VERITAS observations of the BL Lac object PG 1553+113
Connolly, M.P.; Gillanders, Gary; Moriarty, P.; Lang, Mark (American Astronomical Society, 2015-01-20)We present results from VERITAS observations of the BL Lac object PG 1553+113 spanning the years 2010, 2011, and 2012. The time-averaged spectrum, measured between 160 and 560 GeV, is well described by a power law with a ... -
VLT polarimetry observations of the middle-aged pulsar PSR B0656+14
Moran, Paul; Shearer, Andrew (EDP Sciences, 2015-11-02)Context. Optical polarisation measurements are key tests for different models of the pulsar magnetosphere. Furthermore, comparing the relative orientation of the phase-averaged linear polarisation direction and the pulsar ...