Search
Skip to Search Results-
Large-Scale Multi-Frequency Capacitive Micromachined Ultrasonic Transducer (CMUT) Arrays for Ultrasound Medical Imaging and Therapeutic Applications
DownloadSpring 2020
Ultrasonic transducers capable of operating over multiple frequency bands could have several interesting medical applications including multi-resolution multi-depth imaging for point-of-care ultrasound, imaging-therapy, super-harmonic contrast agent imaging, super-resolution imaging, image-guided...
-
Metallic thin films for NEMS/MEMS: from fundamental behaviour to microstructural design and fabrication
DownloadFall 2011
The main focus of this thesis is the study of thin metal films in microelectromechanical/nanoelectromechanical systems (MEMS/NEMS), ranging from application to fundamental behaviour. The use of metallic structural components is desirable since they are electrically conductive, optically reflective...
-
Fall 2013
This thesis outlines the development of two platforms for integrating microfabricated sensors with high pressure feedthroughs for application in hostile high temperature high pressure environments. An application in oil well production logging is explored and two sensors were implemented with...
-
Fall 2020
This thesis describes the theory, fabrication, and characterization of on-chip, integrated Fabry-Perot microcavities embedded with thin silicon nitride membranes. The approach combines a previously developed process for fabricating self-assembled Si / SiO2 / Ta2O5 curved mirror cavities, with a...
-
Nanophotonic detection of nanomechanical structures for use toward mass sensing applications
DownloadSpring 2014
Nanomechanical beam resonators show much promise for use in integrated on-chip mass sensing systems. This follows from their own very small masses and also their ability to store the mechanical energy of their oscillations to produce strong measurable mechanical response signals. To achieve...
-
Fall 2018
Ghoraishi Kahangi, Maryam Sadat
Due to their ability to measure extremely small displacements and forces, nanomechanical cantilevers have attracted considerable attention from numerous scientific communities, each exploring a variety of applications. Though typically operated in either vacuum or air, operation of the device in...
-
Spring 2018
As common human computer interfaces(HCIs), touchscreen panels (TSPs) have been ubiquitously adopted in our daily life especially in the consuming electronics, and numerous industrial applications. However, force information has been a missing part in conventional TSPs, drawing limitations in the...
-
Fall 2009
Resonant microcantilevers are promising transducers for bacteria detection because of their high sensitivities. Surface stress and mass from adsorbates affect the resonant frequency. We developed a novel method for decoupling the frequency contributions of a change in mass and surface stress on a...
-
Fall 2010
The scanning tunneling microscope (STM) based on quantum tunneling can attain atomic-scale spatial resolution and help elucidate a wealth of phenomena in the microscopic world. However a limitation in scanning tunneling microscopy is the low temporal resolution due to readout circuit frequency...
-
Theoretical and Experimental Investigation on the Use of Surface Acoustic Wave Sensors for Evaluating the Adhesion of SU-8 Thin Films
DownloadFall 2015
This research investigates the use of a SU-8/AlN/Si SAW sensor for evaluating the adhesion of SU-8 thin films. A theoretical model is developed to plot the wave dispersion profile for the SU-8/AlN/Si configuration. A spring interface model is utilized to represent the SU-8/AlN interface using a...