1. Helen D. Ford

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    1. Mentioned In 8 Articles

    2. Metre-per-second microfluidic flow velocimetry with dual beam optical coherence tomography

      Metre-per-second microfluidic flow velocimetry with dual beam optical coherence tomography
      A novel dual beam Optical Coherence Tomography (OCT) instrument has been developed for high velocity flow measurement, principally in microfluidics applications. The scanned dual beam approach creates a pair of image-frames separated by a small spatiotemporal offset. Metre-per-second flow measurement is achieved by rapid re-imaging by the second beam allowing for particle tracking between each image-frame of the pair. Flow at 1.06 m/s using a single optical access ...
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    3. Application of optical coherence tomography to non-destructively characterise rind breakdown disorder of ‘Nules Clementine’ mandarins

      Application of optical coherence tomography to non-destructively characterise rind breakdown disorder of ‘Nules Clementine’ mandarins
      ...ively characterise rind breakdown disorder of ‘Nules Clementine’ mandarins * Lembe Samukelo Magwaza^a^, ^d, * Helen D. Ford^b, * Paul J.R. Cronje^c, * Umezuruike Linus Opara^a, * Sandra Landahl^d, * Ralph P. Tatam^b, * L...
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    4. Spatially-resolved volume monitoring of adhesive cure using correlated-image optical coherence tomography

      Spatially-resolved volume monitoring of adhesive cure using correlated-image optical coherence tomography
      Cross-correlation of optical coherence tomography (OCT 1 ) images has been applied to internal imaging of PVA and two-part epoxy adhesives during cure, providing information on relative viscosity at different positions within the sample volume. Spatial resolution of a few micrometres is obtained in the original OCT images, and a few tens of micrometres in the correlation images, enabling the progress of cure to be mapped in fine detail within a ...
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    5. Imaging fibre bundles for Fizeau-based optical coherence tomography

      An OCT system incorporating a coherent fibre imaging bundle is described. Fibres are accessed sequentially by a beam focused onto the input face of the bundle, allowing 2D or 3D images to be acquired using point detection. A Fizeau interferometer configuration is used, in which light from the distal end of a fibre in the bundle (forming the reference arm) mixes with light reflected by the sample itself (forming the ...
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  2. About Helen D. Ford

    Helen D. Ford

    Helen Ford studied Natural Sciences at Cambridge and has an MSc in Applied Optics from Reading University. She started her career in the optical biophysics group at the Institute of Food Research in Norwich, studying the structure and gelation properties of biopolymers using laser light scattering. After moving to the Optical Sensors Group (now Department of Engineering Photonics) at Cranfield University, she worked for a PhD in optical-fibre-based wavelength filters and multiplexers. This was followed by a period of post-doctoral research developing optical flow-measurement techniques.

    Helen took a career break when her children were young, returning to Cranfield in 2003 under a Daphne Jackson Fellowship sponsored by the Royal Academy of Engineering She is now a Research Fellow in the Department of Engineering Photonics, with interests in a number of areas of optical engineering including optical fibre sensing methods, optical flow measurement, laser speckle sensors and low-coherence interferometry including OCT. She has over 60 journal and conference publications.