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Full-Text Articles in Mechanical Engineering

Molybdenum Disulfide-Conducting Polymer Composite Structures For Electrochemical Biosensor Applications, Hongxiang Jia Nov 2016

Molybdenum Disulfide-Conducting Polymer Composite Structures For Electrochemical Biosensor Applications, Hongxiang Jia

Graduate Theses and Dissertations

Lactic acid is widely existing in human bodies, animals and microorganisms. Recently, using biosensor to detect the concentration of lactic acid and diagnose disease have attracted great research and development interests. Nanocomposites is one of the best material used for biosensor because their wonderful conductivity, optical and electrochemical properties. In the study, MoS2 and polypyrrole (PPY) are used for the composite material electrode. To determine whether lactate oxidase (LOD) was helpful for the biosensor’s detective properties, both PPY-MoS2 film with LOD and PPY-MoS2 film without LOD are being tested. The fourier transform infrared spectroscopy (FTIR) and ...


Al/Ti Nanostructured Multilayers: From Mechanical, Tribological, To Corrosion Properties, Sina Izadi Apr 2016

Al/Ti Nanostructured Multilayers: From Mechanical, Tribological, To Corrosion Properties, Sina Izadi

Graduate Theses and Dissertations

Nanostructured metallic multilayers (NMMs) are well-known for their high strength in smaller bilayer thicknesses. Six Al/Ti (NMM) with different individual layer thickness were tested for their mechanical hardness using a nanoindentation tool. Individual layer thicknesses were chosen carefully to cover the whole confined layer slip (CLS) model. Nano-hardness had a reverse relation with the square root of individual layer thickness and reached a steady state at ~ 5 nm bilayer thickness. Decreasing the layer bilayer thickness from ~ 104 nm to ~ 5 nm, improved the mechanical hardness up to ~ 101%. Residual stresses were measured using grazing incident X-ray diffraction (GIXRD). Effect ...


Development Of An Enzymatic Glucose Biosensor For Applications In Wearable Sweat-Based Sensing, Allison Anne Cargill Jan 2016

Development Of An Enzymatic Glucose Biosensor For Applications In Wearable Sweat-Based Sensing, Allison Anne Cargill

Graduate Theses and Dissertations

The recent development and commercial availability of wearable devices like the FITBIT® and Apple Watch® reflect an increasing consumer interest in actively monitoring health parameters. Though wearable devices are beginning to emerge in a variety of fields and applications, there is particular interest in the development of wearable monitors for continuously sensing blood glucose levels. Diabetes currently affects nearly 10% of the American population, a number that is expected to rise in the near future, prompting increased interest in noninvasive methods of monitoring glucose levels. This interest in noninvasive monitoring and the recent advent of continuous monitoring products ...