168665 research outputs found
Sort by
Hyperspectral confocal imaging of whispering-gallery-mode microlasers for bio- and ecophotonic applications (thesis data)
Research data underpinning the PhD thesis "Hyperspectral confocal imaging of whispering-gallery-mode microlasers for bio- and ecophotonic applications". The provided experimental data consists of confocal hyperspectral images, fluorescent images, and spectroscopy measurements of samples containing microlasers and/or biological specimens. The data files are embargoed until 05/05/202
Wireless Magnetoelectrically Powered Organic Light Emitting Diodes (Thesis data)
Biomedical implants, such as brain stimulators, have significantly enhanced the quality of life for many individuals. Recently, the emergence of photonic implants has opened new avenues for innovative treatment methods and high-resolution neuronal stimulation through a technique known as optogenetics. However, classical photonic implants, such as optical fibres tether the subject to an external light source. Wireless light sources, which combine an energy receiver for wireless power transfer with an integrated light source in a compact volume, are revolutionizing treatment methods and propel optogenetic research forward. Nevertheless, current electromagnetic field based wireless stimulators are still bulky or require high frequency fields to operate, which are strongly absorbed by opaque watery environments such as tissue. The composite magnetoelectric (ME) effect, which enables the conversion of magnetic fields to electric fields via mechanical oscillations, has the potential to overcome limitations related to miniaturization, power supply, and low-frequency device operation. In this work, we explore the combination of composite ME materials and organic light-emitting diodes (OLEDs) to create a compact light source that operates at frequencies below one megahertz. We present the first sub-cubic millimetre, low frequency wireless light source by directly manufacturing a specifically tailored OLED stack onto an ME transducer. The device demonstrates robust performance with no signs of degradation over hours of continuous operation and can be operated deep inside a tissue phantom. We show that the light output is sufficient to trigger an optogenetic response in Drosophila melanogaster fruit fly larvae and outline efforts towards mammalian animal models. To provide enough power for the OLED, ME transducers must be operated at their mechanical resonance frequency. We exploit his property to demonstrate the clustered activation of multiple devices located in the same magnetic field. A computational optimization strategy allows guided resonance frequency tuning by changing the shape of the device. Our work lays the foundations for a novel type of tiny, wireless light source operable centimetres deep inside tissue. The data files are embargoed until 17/05/202
Synthesis of peri-substituted acenaphthenes for carbon-heteroatom coupling (Thesis Data)
NMR datasets - Mercury software required. PDF copies of GCMS data, MS data X-Ray Crystallography datasets - Olex software required The data files are embargoed until 01/08/202
Investigating the role of the chromatin remodeller XNP-1 in C. elegans (Thesis Data)
Data in Excel format with links to lab notebook as required. Please email myself, [email protected], or my supervisor, [email protected] if further details required. The data files are embargoed until 23/01/202
Studies of Lithium-Silicon Negative Electrode Materials for Batteries (Thesis data)
The data files are embargoed until 08/12/202
A new simulation methodology for generating accurate drone micro-Doppler with experimental validation (dataset)
Towards understanding financial decisions in informal microbusinesses:evidence from a developing country
Through an integrative perspective, we extend the literature on capital structure of informal microbusinesses. Our approach considers the financing decision and the various financial decisions and their impact on cash generation for personal purposes. A dataset of 892 Colombian informal microbusinesses were explored to identify various business configurations using Multiple Correspondence Analysis and Hierarchical Clustering Method. Through a logistic regression, we regressed the probability of early cash generation for personal purposes on business configurations and initial financing. Four microbusiness configurations emerged: Typical informal, owner-oriented, over-indebted, and informal lenders. Results show that informal microbusinesses are distinctive in terms of their financial decisions. Initial financing provided by formal lenders and payday lenders delay early cash generation. The contrary occurs when initial financing is provided by private informal lenders and to typical informal microbusinesses. Results indicate that different configurations require customized initiatives rather than a “one-size fits all” approach for informal microbusinesses
The Development and Use of Elastic Resonators to Study Biomechanics in Soft-Bodied Locomotion (thesis data)
Processed figure data, Origin Project Files (.opj) and finished figures (.pdf, .svg and .png). Files are named after the chapter to which they pertain. The following is a list of data included: - Force Distance Spectroscopy data for metal-free elastic resonators, multistoichiometrically mixed elastic resonators and multi-elastomer mixed elastic resonators (Origin project files, .opj. Requires Origin License to open) - Reflection mapping data for elastic resonators with different cavity lengths (Origin project files, .opj. Requires Origin License to open). - Comparison of simulated and ground truth force data (Origin project files, .opj. Requires Origin License to open). - Animal locomotor viability on elastic resonators (Origin project files, .opj. Requires Origin License to open). - Water contact angle data on collagen treated elastic resonators (Origin project files, .opj. Requires Origin License to open) - Tracked ventral kinematics of locomotor waves and the anteroposterior latency against wave speed relationship (Origin project files, .opj. Requires Origin License to open). - Tracked ground reaction force, indented volume and contact area for individual protopodia over time and the relationship between initiation and termination substrate displacement against wave speed (Origin project files, .opj. Requires Origin License to open). - Odor tracking behaviour data (Origin project files, .opj. Requires Origin License to open) - Muscle tracking data (Origin project files, .opj. Requires Origin License to open). - Profiles along soft, medium and rigid elastic resonators (Origin project files, .opj. Requires Origin License to open). - Profiles of displacement for bilaterally active animals (Origin project files, .opj. Requires Origin License to open). - Mediolateral and anteroposterior displacement tracking for individual protopodia (Origin project files, .opj. Requires Origin License to open). - Tripod papillae behaviour data (Origin project files, .opj. Requires Origin License to open). - Kinematic tracking of rolling behaviour (Origin project files, .opj. Requires Origin License to open) - WARP analysis of rolling behaviour (Origin project files, .opj. Requires Origin License to open) - Anterior and posterior velocity tracking and anteroposterior angle tracking data (Origin project files, .opj. Requires Origin License to open). To aid in navigating the dataset, all files include, in their file name, the relevant figure which they relate to as well as a brief summary of what the dataset contains. Any files which contain only the figure code are the finalised version of the figures included to allow easy navigation of in a situation where the thesis itself is not readily accessible. Below includes a list of and explanation for all filetypes: .opj - These are Origin Project Files, use the licensed software OriginLab to open these. .ogwu - These are Origin Datasheet files, use the licensed software OriginLab to open these. .txt - These are text files, use the free software Notepad to open these. .PY - These are python code files, use the free software Spyder to open these. .xls - These are spreadsheet files, use the licensed software Microsoft Excel or free software OnlyOffice to open these. .class, .jar, .java, .mph and .status files - These are COMSOL java files used for stress simulations, use the licensed software COMSOL Multiphysics to open these. .zip - These are compressed zip folders, use Windows Explorer to open these except those containing Roi in the file name, these are region of interest files which can be opened with ImageJ and FIJI to view the areas used to collect data in related image datas. .tif and .tiff - These are image and video files, use the free software ImageJ and FIJI to open these. .lif - These are Leica Image Files, use the licensed software LAS X or free software ImageJ and FIJI to open these. .avi - These are video files, use the free software VLC to open these. .png - These are graphic files, use the free software Windows Photos to open these. .svg - These are Scalable Vector Graphic files, use the free software Inkscape to open these. .PDF - These are portable document files, use the free software Adobe Acrobat or any browser software to view these. The data files are embargoed until 09/05/202