Perovskite Solar Cells (PSCs) based on hybrid organic-inorganic halide perovskites (OIHPs) have been under the spotlight due to the unprecedented promise of a low-cost and …
The Solid Electrolyte Interphase (SEI) forms in most Li-ion batteries, but properties such as its formation mechanism are a mystery. The goal of this dissertation …
Abstract of “Investigations on mechanical property - microstructure correlations in CMC Coatings” by Sugeetha Vasudevan, Ph.D., Brown University, May 2016 Carbon nanotubes (CNTs) are being …
Intrinsic stresses which develop during thin film deposition can degrade film performance and lead to the failure of systems and devices which rely on thin …
The ternary solid solution (1-x)Bi1/2(Na0.78K0.22)1/2TiO3 ̶ xBiMg1/2Ti1/2O3 (BNKT-BMT) was investigated for high-strain actuator applications. BNKT-BMT is a Bi1/2Na1/2TiO3 (BNT)-based relaxor ferroelectric which shows promise as …
Advanced high strength steels with a lath martensitic microstructure (MS-AHSS) and tensile strengths > 1 GPa are of interest for automotive applications but are susceptible to …
The low formation energies of metal halide perovskites (MHPs) make it possible to solution-process them near room temperature, but also make them unstable. While significant …
Mo-Si-B alloys are possible candidates for high-temperature applications beyond the capabilities of Ni-based superalloys. Specifically, multiphase Mo-Si-B alloys with a Mo solid solution matrix and …
A thorough understanding of the properties of oxides, including the formation of oxygen vacancy, surface termination, and an interface between oxide and metal, can benefit …
Current aircraft jet engines use nickel-based superalloys in the hot sections. Their operation temperature is about 1050°C. To enhance performance and fuel efficiency, materials that …
Due to its excellent mechanical, tribological and biocompatibility properties, polycrystalline diamond is a promising coating material on metallic implants. However, the biological responses of diamond …
Ceramic-matrix composites (CMCs) are being used to replace metallic hot-section components, enabling higher operating temperatures and higher efficiencies in gas-turbine engines used to propel aircraft …
Fast charging of lithium-ion batteries while avoiding lithium metal plating is a central hurdle for widespread adoption of electric vehicles. As the most commonly used …
Sn, which offers large theoretical capacity (994 mAh/g), is a potentially useful anode material in lithium-ion batteries. However, Sn exhibits irreversible capacity loss through mechanical …
Oxide materials have been a focus of recent thermoelectric research due to their thermal and chemical stability as well as cost effectiveness. In this thesis …
Research on ZrB2-SiC based ultra-high temperature ceramic (UHTC) composites has drawn much attention due to their potential for application in future hypersonic vehicles. The aim …
Self-organized pattern formation can be produced by low energy ion bombardment. A continuum theory explains the ion-induced surface morphology evolution in terms of a balance …
The field of photovoltaics has been experiencing a revolution with emergence of perovskite-based solar cells (PSCs). While the swift rise in power conversion efficiencies (PCEs) …