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Full-Text Articles in Engineering
Graphene Based Anode Materials For Lithium-Ion Batteries, Sree Lakshmi Cheekati
Graphene Based Anode Materials For Lithium-Ion Batteries, Sree Lakshmi Cheekati
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Improvements of the anode performances in Li-ions batteries are in demand to satisfy applications in transportation. In comparison with graphitic carbons, transition metal oxides as well as graphene can store over twice amount of lithium per gram. Recently, graphene-based anodes for Li-ion batteries are under extensive development. In this research, lithium storage characteristics in graphene oxide (GO), GO/Manganese acetate (GO/MnAc), GO/manganese oxide (GO/MnOx) composites and Nano Graphene Platelets (NGP) were studied. The prepared GO delivered reversible capacities of 706mAh/g with an average columbic efficiency of 87%. Reversible capacities of 533 mAh/g were observed for GO/MnAc composite. GO/MnOx nanocomposite thermal annealed …
Effects Of Low Energy E-Beam Irradiation On Graphene And Graphene Field Effect Transistors And Raman Metrology Of Graphene On Split Gate Test Structures, Gayathri Rao
Legacy Theses & Dissertations (2009 - 2024)
Apart from its compelling performance in conventional nanoelectronic device geometries, graphene is an appropriate candidate to study certain interesting phenomenon (e.g. the Veselago lens effect) predicted on the basis of its linear electron dispersion relation. A key requirement for the observation of such phenomenon in graphene and for its use in conventional field-effect transistor (FET) devices is the need to minimize defects such as consisting of - or resulting from - adsorbates and lattice non-uniformities, and reduce deleterious substrate effects. Consequently the investigation of the origin and interaction of defects in the graphene lattice is essential to improve and tailor …
Graphene Based Rf/Microwave Impedance Sensing And Low Loss Conductor For Rf Applications, Iramnaaz Iramnaaz
Graphene Based Rf/Microwave Impedance Sensing And Low Loss Conductor For Rf Applications, Iramnaaz Iramnaaz
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Biosensors are becoming more popular recently and expanding due to their broad applications in detecting disease and infectious agents, monitoring of environmental toxins, etc. Recognition and quantification of biochemical molecules and molecular interactions present great challenges in biosensing [38]. Impedance sensing at radio frequency (RF) /microwave frequency becomes very attractive as bio-molecules exhibits large distinct dielectric properties, and also because the ionic conductivity of water in most physiological systems is greatly diminished. For example, it has been reported that tumoral cells exhibits large value of electrical conductivity and permittivity which can result in significant variation of the impedance when compared …
Graphene-Based Interconnects : Electrical Performance And Reliability, Tianhua Yu
Graphene-Based Interconnects : Electrical Performance And Reliability, Tianhua Yu
Legacy Theses & Dissertations (2009 - 2024)
According to the ITRS Roadmap, on-chip interconnects wire width and current density will reach 22 nm and 5.8×106 A/cm2 in 2020, respectively. The electrical resistivity of Cu increases with scaled critical dimensions due to exacerbated carrier scattering at grain boundaries and interfaces, resulting in signal speed degradation. Electronmigration (EM)-related failure due to intensified current distribution posts extra limits to ultra-scaled systems. Innovative interconnect solutions are needed to tackle performance and scaling challenges.