SHE level 10 SCQF credit points 20 ECTS credit points 10 Module code MHF426797 Module Leader Mahesh Uttamlal School School of Science & Engineering Subject Chemical Science Trimester B (January start)
Summary of content The module will develop the students' understanding of instrumental methods of analysis that will enable the selection and justification of practical procedures in response to forensic investigations of hairs, fibres, paper, gunshot residues and materials failures. Techniques will include conventional far-field confocal microscopy, atomic force microscopy, scanning tunnelling microscopy (STM),and electron microscopy with EDX.
Module details Syllabus arrow_forward CONFOCAL MICROSCOPY The microscope, operation and theory. Imaging techniques multi-fluorescent labelling. Microscopy of cells, tissues and hair. SCANNING ELECTRON MICROSCOPY (SEM) Electron beam production and focusing. Interaction of electrons with matter. Detectors and image formation (topographical and compositional), depth of field advantage. Wavelength dispersion (WDX) and energy dispersion techniques (EDX). Electron microscopy in the analysis of paper, hairs, fibres, and gunshot residues. ATOMIC FORCE MICROSCOPY (AFM) Electrical interaction between atoms and molecules - force distance curves The microscopy and instrumentation Tips and resolution Imaging modes contact, non-contact, AC and phase. Application of AFM in the analysis of hair, fibres, papers and biological samples. SCANNING TUNNELLING MICROSCOPY (STM) Electron tunnelling The microscope and instrumentation Tips and resolutions Application of STM in the analysis of electrically conducting samples Short introduction to techniques in super resolution microscopy, e.g. STED, NSOM. CASE STUDIES IN FORENSIC INVESTIGATION Case studies in the use of advanced microscopic data as forensic evidence will be discussed. THE PROJECT The coursework will consist of a case study in the use of the above techniques (and others, as appropriate) for the analysis of a sample important in forensic investigation, e.g. hair, fibres, papers, metals etc. Students will analyse the data and critically evaluate the merits of each technique for the analysis. The work will be reported in the form of a structured report. The syllabus consists of a list of topics normally covered within the module. Each topic may not be dealt with in the same detail.
Learning outcomes arrow_forward
On successful completion of this module students should be able to:
Demonstrate an understanding of SEM/EDX principles and its application in the areas of forensic investigation, for example, gunshot residue (GSR) and materials testing. Demonstrate an understanding of atomic force microscopy principles and its application to the analysis of a range of sample types including hairs and fibres. Demonstrate an understanding of the principles and application of scanning tunnelling microscopy (STM). Critically review, compare and evaluate, appropriate microscopic strategies to address a real forensic analytical problem. Undertake an investigative forensic project, integrating the techniques covered in the module and present a critical, sound and clear analysis of the investigation, in a formal forensic report.
Teaching / learning strategy arrow_forward The module will be delivered through a combination of lectures, laboratory demonstrations/exercises and tutorials. Students will be supported by use of the managed learning environment GCULearn where appropriate. Students will develop a deeper understanding of the topics through reading recommended texts and reference to on-line peer-reviewed papers available from the library. This knowledge will be discussed in tutorial classes and tested by written examination. Laboratory skills in microscopy and imaging will be developed through instruction. Their ability to operate microscopes professionally will be tested in an individual project involving sample(s) associated with forensic investigation. The ability to critically evaluate microscopic images collected during the project will be evaluated through a written scientific report of publication standard. Time management and competence in using software packages developed over previous academic years are essential for the successful completion of this module.
Transferrable skills arrow_forward On completion of the module the student should have developed the following transferable skills: Communications skills - orals skills will be developed during regular discussion of the project with supervisor. Written skills will be enhanced during the recording of data and writing of the project report. Practical skills - the student will engage in the handling of chemicals and the operations of high-end laboratory instrumentation. IT skills - will be developed in the processing and manipulation of experimental data and the preparation of the project report. Time management skills - the execution of the project will require good time management. Deadlines will have to be met in order to achieve the best possible outcomes.
Module structure Activity Total hours Lectures 22 Tutorials 11 Practicals 30 Seminars 0 Independent Learning 117 Assessment 20 Placement 0
Assessment methods Component Duration Weighting Threshold Description Course Work001 50 35 Investigative report (2000 words) Exam002 2 50 35 Formal written exam (2hrs)