This report describes the development and testing of a Galloping Hydro Electric Energy Device (GHEED) which is intended to utilize a Dielectric Elastomer Generator (DEG). The mechanical side of the GHEED includes a shape morphing element, and has been designed to convert the kinetic energy of low head and/or turbulent flows into repeating, oscillating motion. The intent is to couple this motion...

Metal–insulator–metal (MIM) capacitors have been fabricated using high-κ La2O3\HfO2 dielectric stacks deposited using Dense Plasma Focus (DPF) and were subsequently studied. DPF is a unique machine used for the very first time to fabricate dielectric stacks within a MIM structure as it can be used both to deposit nano-size thin film as well as can also be used to change the properties of the po...

Tunable coplanar waveguide stub resonators deposited on various ferroelectric/dielectric heterostructures are studied in the 10-GHz band. A frequency tunability up to 45% is achieved under a moderate biasing field (Ebias < 100 kV/cm) when the resonator is printed on KTa0.5Nb0.5O3 (KTN) ferroelectric thin film alone: this comes from the large permittivity agility of the KTN material (r(KTN) va...

The dielectric boundary force (DBF) is the force that induced charges at dielectric boundaries exert on the charge that induced them. The DBF is present in any electrostatic problem with a non-uniform dielectric constant, and is important in the case of charged particles near dielectric boundaries. Yet, it is absent in common continuum theories of charge distribution and of charge transport, su...

Dielectric breakdown characteristics of high-k dielectric have been intensively studied to develop a lifetime extrapolation model for device with metal/high-k gate stacks. Majority of prior works treated the high-k dielectric as a single layer dielectric like thermally grown SiO2 while the actual structure of high-k dielectric consists of two layers (high-k layer stacked on interfacial SiO2 lik...

Yang, Tian M.S.E.C.E, Purdue University, December, 2007. Capacitance-voltage studies of atomic-layer-deposited MOS structrures on Gallium Arsenide and other III-V compound semiconductors . Major Professor: Peide Ye. Si-based CMOS devices with traditional structure are approaching the fundamental physical limits. New device structures and materials must be explored to continue the trend of incre...

Coordinate transformation is applied to design an all-dielectric device for Extraordinary Transmission (ET) in a single sub-wavelength slit. The proposed device has a broadband feature and can be applied from microwave to visible frequency bands. Finite-Difference Time-Domain (FDTD) simulations are used to verify the device's performance. The results show that significantly increased transmissi...

BACKGROUND Receiving real-time information on tissue properties while performing biopsy procedures has the potential of improving biopsy accuracy. The study goal was to test the ability of a miniature flexible Radio-Frequency (RF) sensor (Dune Medical Devices), designed to be mounted on the surface of surgical tools, in measuring and mapping the various breast tissue types and abnormalities in ...