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Item Open Access Optical Detection of Glucose Using 3D-Printed Microfluidic Platform. BIOS2016 Gothenburg.(Cranfield University, 2016-05-26 11:28) Tothill, AlexanderPoster and data presented at Biosensors 2016 Conference Gothenburg Sweden.Item Open Access Simulink models from 'Multi-temperature state-dependent equivalent circuit discharge model for lithium-sulfur batteries(Cranfield University, 2016-08-10 11:24) Auger, Daniel; Fotouhi, Abbas; Longo, StefanoThis fileset contains a Simulink representation of the models developed in the paper 'Multi-temperature state-dependent equivalent circuit discharge model for lithium-sulfur batteries' accepted by the Journal of Power Sources on July 23, 2016. The data files can be opened with Simulink R2016a.Item Open Access Poster: A Fresh Look at Optical Interferometry(Cranfield University, 2016-08-17 10:36) Kissinger, ThomasPoster presented by Thomas Kissinger at Set for Britain 2016 event in the UK parliament on 07.03.2016. Abstract: Optical interferometry is a widely used technique for ultra-precision distance measurements in many areas of science and technology, enabling fundamental physical experiments, such as the hunt for gravitational waves, and underpinning important industrial technologies, such as semiconductor fabrication. My particular research deals with the question on how multiple measurements at different points can be taken simultaneously using only one instrument. This can be achieved by appropriately modulating the optical wavelength of the laser used and a very simple way to perform these measurements is the signal processing technique developed during my PhD thesis project. A key advantage of this approach is that it reduces the number of optical components needed and instead shifts complexity of the measurements into the electronics, potentially enabling very cost-effective measurements. As this technology is very new many potential applications still remain unexplored.Item Open Access Applied Optics: HSW gas cells for mid-IR spectroscopy (2016)(Cranfield University, 2016-08-22 13:32) Francis, Daniel; Hodgkinson, Jane; Tatam, RalphData associated with Applied Optics submission, 'Low volume, fast response-time hollow silica waveguide gas cells for mid-IR spectroscopy'Item Open Access IEEE sensors 2016 poster(Cranfield University, 2016-10-21 15:18) Barrington, James; James, Stephen; Tatam, Ralph; Partridge, MatthewConference poster for IEEE sensors 2016 conference. Data can be found using the referenced URL.Item Open Access An ammonia sensor based on Lossy Mode Resonances on a tapered optical fibre coated with porphyrin-incorporated titanium dioxide(Cranfield University, 2016-11-28 09:12) Tiwari, Divya; Mullaney, Kevin; James, Stephen; Tatam, RalphData presented in: An ammonia sensor based on Lossy Mode Resonances on a tapered optical fibre coated with porphyrin-incorporated titanium dioxide, Tiwari et al Sensors and Actuators B 2016 - http://dx.doi.org/10.1016/j.snb.2016.11.092 Figure3.xlsx - The transmission spectrum obtained in air and water from a typical 40 µm non-adiabatic (a), a 17 µm non-adiabatic (b), a 40 µm adiabatic (c) and a 17 µm adiabatic (d) tapered optical fibre. Figure 4.zip - transmission spectra of a non-adiabatic tapered optical fibre of waist diameter 17 microns with time and thus increasing thickness of the TMPyP-TiO2 coating. Figure 5_6_7.zip - transmission spectrum of an adiabatic tapered optical fibre of waist diameter 17 microns with time and thus increasing thickness of the TMPyP-TiO2 coating. Figure 8 and 9.zip transmission spectra when an adiabatic tapered optical fibre of diameter 17 microns was immersed in differing concentrations of ammoniaItem Open Access Integrating cavity based gas cells: a multibeam compensation scheme for pathlength variation(Cranfield University, 2016-11-28 13:52) Bergin, Sarah; Hodgkinson, Jane; Francis, Daniel; Tatam, RalphData to support the following paper: Integrating cavity based gas cells: a multibeam compensation scheme for pathlength variation S Bergin, J Hodgkinson, D Francis and R P Tatam Optics Express 24 (12), 13647 - 13664, 2016 doi:10.1364/OE.24.013647Item Open Access Multi-parameter measurements using optical fibre long period gratings for indoor air quality monitoring(Cranfield University, 2017-01-05 16:45) Hromadka, Jiri; Davis, Frank; Korposh, Serhiy; Partridge, Matthew; James, Stephen; Tatam, RalphData underlying the results presented and discussed in: Multi-parameter measurements using optical fibre long period gratings for indoor air quality monitoring Jiri Hromadk, Sergiy Korposh, Matthew C. Partridge, Stephen W. James, Frank Davis, Derrick Crump, Ralph P. Tatam Published in Sensors and Actuators B 2017. (http://dx.doi.org/10.1016/j.snb.2016.12.050) Note that the description of the instrumentation and conditions pertinent to each file are detailed within the paper. The filenames correspond to the corresponding figure in the paper figure.Item Open Access All-electronic frequency stabilization of a DFB laser diode(Cranfield University, 2017-05-11 13:27) Asmari, Abdullah|Hodgkinson, Jane; Chehura, Edmon; Staines, Stephen; Tatam, RalphData to support the paper All-electronic frequency stabilization of a DFB laser diode A Asmari, J Hodgkinson, E Chehura, SE Staines and RP Tatam Optics Express 25 (10), 11679-11691, 2017. Doi: 10.1364/OE.25.011679Item Open Access Tapered Long Period Gratings(Cranfield University, 2017-05-19 08:46) Mullaney, K; James, Stephen; Staines, S; Tatam, RalphOFS_2017_TLPG_Fig2.xlsx. Figure 2 from Proc. SPIE 10323, 10323C. The spectrum of a tapered long period grating after the fabrication of each of the tapered sections, where the waist diameter was 117 μm and the period was of 418 µm. The TLPG was fabricated in Fibrecore SM750 fibre, and the spectrum recorded using an Ocean Optics CCD spectrometer. OFS_2017_TLPG_Fig3.xlsx. Figure 2 from Proc. SPIE 10323, 10323C. The transmission spectra of 3 TLPG, each comprising 6 tapered sections, with periods of 378,421 and 460 µm and duty cycles of 55, 45 and 41 %.Item Open Access Fabrication of Optical Fibre Tapers(Cranfield University, 2017-05-19 08:47) Mullaney, K; James, Stephen; Tatam, RalphData concerning the fabrication of tapered optical fibres. Presented in Proc. SPIE 10323, 10323D. channelled_spectrum_development.zip - Evolution of channeled spectrum during tapering of SMF 28 optical fiber, using a CO2 laser as the heat source. OFS_2017_TAPER_FIGURE2.xlsx - The spectral response of a Vosskuhler NIR-300P NIR camera and the Planckian black body radiation curves (dashed lines) for a range of temperatures near the melting point of silica optical fibres. OFS_2017_TAPER_FIGURE4.xlsx - The strain measured bya fibre Bragg gratings and laser power used during the fabrication of a taper.Item Open Access Laser speckle velocimetry for robot manufacturing(Cranfield University, 2017-07-04 15:10) Charrett, Tom; Bandari, Yashwanth; Michel, Florent; Ding, Jialuo; Williams, Stewart; Tatam, RalphData files associated with SPIE Optical Metrology, Munich 2017 paper: Thomas O. H. Charrett ; Yashwanth K. Bandari ; Florent Michel ; Jialuo Ding ; Stewart W. Williams ; Ralph P. Tatam; Laser speckle velocimetry for robot manufacturing . Proc. SPIE 10329, Optical Measurement Systems for Industrial Inspection X, 103291Z (June 26, 2017); doi:10.1117/12.2269989Item Open Access Fiber segment interferometry for dynamic strain measurements(Cranfield University, 2017-07-21 15:25) Kissinger, Thomas; O. H. Charrett, Thomas; W. James, Stephen; P. Tatam, Ralph; Correia, RicardoResearch Data for Paper: Thomas Kissinger, Ricardo Correia, Thomas O. H. Charrett, Stephen W. James and Ralph P. Tatam, "Fiber segment interferometry for dynamic strain measurements" Journal of Lightwave Technology 34.19 (2016): 4620-4626Item Open Access Dynamic fiber-optic shape sensing using fiber segment interferometry(Cranfield University, 2017-09-14 09:16) Kissinger, Thomas; Chehura, Edmond; E. Staines, Stephen; W. James, Stephen; P. Tatam, RalphResearch Data for Paper "Dynamic fibe- optic shape sensing using fiber segment interferometry" by Thomas Kissinger, Edmond Chehura, Stephen E. Staines, Stephen W. James and Ralph P. Tatam, Cranfield University, UKItem Open Access UK MOD FOIA2017/0440(Cranfield University, 2017-09-20 08:42) Pelham, JoniUK Defence Personnel over timeItem Open Access A Paradigm Shift Toward Zero Accident(Cranfield University, 2017-09-22 08:36) Soltani, AmirmasoudPresented at the "Future of Transportation" World Conference, July 2017, Cologne, Germany.Item Open Access Effect of extrusion and compression moulding on the thermal properties of Nylon-6/Silica Aerogel Composites: Experimental Data(Cranfield University, 2017-10-05 16:38) Krishnaswamy, Surya; Tinsley, Lawrence; Marchante, Veronica; Addepalli, Sri; Huang, Zhaorong; Abhyankar, HrushikeshThe paper presents the effect of a lower extrusion speed and compression moulding on the thermal properties of PA-6/Aerogel composite. SEM/EDX and optical microscope images showed that although most of the aerogel was destroyed during extrusion at 65 rpm, extrusion at 5 rpm showed better retention of the aerogel structure. However, when subjected to moulding in a compression press, both composites suffered significant damage. Nevertheless, the final thermal conductivity and damage coefficient values did show an improvement in the thermal insulation properties of the samples extruded at 5 rpm compared to the samples extruded at 65 rpm and the virgin polymer (PA-6) with the former losing around 33% of the structure of the aerogel particles compared to 41% for the later.Item Open Access Passively-coupled, low-coherence interferometric duct profiling with an astigmatism-corrected conical mirror(Cranfield University, 2017-11-16 09:47) Ford, Helen; Tatam, RalphFig 5 Excel file with experimental beam-waist radii (cone mirror alone) and numbers from Zemax model. €œData fig 5€ (one worksheet). Fig 6 Excel file €œData fig 6€ (one worksheet) with evolution of beam-waists in z, from Zemax model for combined cone mirror and custom lens. Also includes data for other working distances, as mentioned in paragraph 3 of p 10. Fig 7 Excel file with experimental beam-waist radii (cone and lens) and numbers from Zemax model €œData fig 7€ (one worksheet). Fig 11 Excel file with experimental and calculated data for fibre centroid positions in arc array. Also contains data for relative positions of probe and arc array centre axes, before and after adjustment. €œData fig 11€ (three worksheets). Fig 12 Excel file with experimental beam radii data for complete probe, with and without custom lens. €œData fig 12€ (one worksheet). Fig 14 Excel file with experimental data and calculated fits, for surface depth measurements using the complete probe in experimental tube-section samples. €œData fig 14€ (four worksheets).Item Open Access Data for "Electric Vehicle Battery Parameter Identification and SOC Observability Analysis: NiMH and Li-S Case Studies"(Cranfield University, 2017-11-21 11:49) Fotouhi, Abbas; Auger, Daniel; Propp, Karsten; Longo, StefanoIn this study, battery model identification is performed to be applied in electric vehicle battery management systems. Two case studies are investigated: nickel-metal hydride (NiMH), which is a mature battery technology, and lithium-sulfur (Li-S), a promising next-generation technology. Equivalent circuit battery model parameterization is performed in both cases using the Prediction-Error Minimization (PEM) algorithm applied to experimental data. Performance of a Li-S cell is also tested based on urban dynamometer driving schedule (UDDS) and the proposed parameter identification framework is applied in this case as well. The identification results are then validated against the exact values of the battery parameters. The use of identified parameters for battery state-of-charge (SOC) estimation is also discussed. It is shown that the set of parameters needed can change with a different battery chemistry. In the case of NiMH, the battery open circuit voltage (OCV) is adequate for SOC estimation whereas Li-S battery SOC estimation is more challenging due to its unique features such as flat OCV-SOC curve. An observability analysis shows that Li-S battery SOC is not fully observable and the existing methods in the literature might not be applicable for a Li-S cell. Finally, the effect of temperature on the identification results and the observability are discussed by repeating the UDDS test at 5, 10, 20, 30, 40 and 50 degree Celsius. File created in MATLAB 2015a.Item Open Access Data for "Lithium-Sulfur Battery State-of-Charge Observability Analysis and Estimation"(Cranfield University, 2017-11-21 11:49) Fotouhi, Abbas; Auger, Daniel; Propp, Karsten; Longo, Stefano3.4 Ah Li-S cell pulse discharge test data at 30 degree. File created in MATLAB 2015a.