Browsing by Author "Cheng, Zhongyang"

Now showing items 21-40 of 40

Investigation of the Mechanical Behavior of Freestanding Polycrystalline Gold Films Deposited by Evaporation

Wang, Liwei (2007-08-15)

The Membrane Deflection Experiment was employed to perform the micro-tensile testing on freestanding polycrystalline gold thin films. Films with varying thickness of 0.25 µm, 0.50 µm and 1.00 µm were deposited on Si ...

Investigation of volatile gas sensors integrated on flexible and wearable substrates with functional nanomaterials

Park, Hyejin (2015-07-29)

In this dissertation, development of gas sensors on wearable substrates was studied to overcome the limitations, e.g., high-temperature process for fabricating sensing material, high sensing temperature, insufficient ...

Magnetoelastic Sensor Systems in Biomarker Sensing Applications

MacLachlan, Alana (2023-12-01) ETD File Embargoed

Biosensors are receptor-transducer devices which convert biological responses into readable signals. Biosensor design and development have drawn increasing attention due to the extensive range of possible applications, ...

Measurements of the thermal expansion and heat capacity of metals by electromagnetic levitation

Guo, Baojian (2006-08-15)

Electromagnetic levitation is a very useful non-contact melting technique that can be exploited for measurements of thermophysical properties of many reactive metals and alloys. This study focused on thermal expansion and ...

Mechanical Properties of Near-Frictionless Hydrogenated Amorphous Carbon Freestanding Thin Films for MEMS Devices

Zhou, Bo (2005-12-15)

Diamond-Like carbon (DLC) films with a mixture of sp2 and sp3 hybridizations have exhibited excellent properties such as chemical stability, wear resistance, optical transparency and are now widely used as protective ...

Microstructure and Mechanical Properties of 2024-T3 and 7075-T6 Aluminum Alloys and Austenitic Stainless Steel 304 after Being Exposed to Hydrogen Peroxide

Sofyan, Nofrijon (2008-08-15)

The effect of hydrogen peroxide used as a decontaminant agent on selected aircraft metallic materials has been investigated. The work is divided into three sections; bacterial attachment behavior onto an austenitic stainless ...

Microstructure Development and Evolution of Sputter Deposited Indium Thin Films in Cryogenics

Park, Jung-Hyun (2007-08-15)

Low melting temperature materials have been deposited on amorphous substrate using DC magnetron sputter system. Process parameters such as power, pressure, and temperature have been investigated to improve surface morphology ...

Novel Sensor for Rapid Detection of Blood Cell Types-Magnetostrictive Microcantilevers

Orona, Lisa (2005-08-15)

Microcantilevers have been around since the development of atomic force microscopy. The main attraction of cantilevers results from the fact that they can transduce many different signal domains into mechanical signals. ...

Passive Chemiresistor Sensor Based on Iron (II) Phthalocyanine Thin Films for Monitoring of Nitrogen Dioxide

Shu, John Hungjen (2010-12-09)

Nitrogen dioxide gas is a common atmospheric pollutant that is hazardous to human health at concentrations as low as one part per million (ppm). Iron (II) phthalocyanine (FePc) thin films have been identified to be sensitive ...

Phage-Based Magnetoelastic Sensor for the Detection of Salmonella typhimurium

Lakshmanan, Ramji (2008-12-15)

In recent years, food-borne illness have garnered the attention of mainstream America with calls now coming from the media for more inspections to ensure the safety of our food supply. Food borne illness from the ingestion ...

Piezoelectric Energy Harvesting Devices for Low Frequency Vibration Applications

Shen, Dongna (2009-05-15)

Energy harvesting, a process of capturing ambient waste energy and converting it into usable electricity, has been attracting more and more researchers’ interest because of the limitations of traditional power sources, the ...

Plasmonic nanomaterials for label-free biosensor towards next-generation point-of-care immunoassay

He, Jiacheng (2021-11-12)

Cytokines, a broad category of low molecular weight signaling proteins, are key immune modulators for cell-based immune response. An abnormal level of cytokine can lead to acute/chronic inflammation, multiple organ failure, ...

A Remote Magnetoelastic Sensor with Antibody as a Probe to Detect Salmonella Typhimurium

Guntupalli, Rajesh (2007-05-15)

Every year millions of people around the globe suffer from foodborne illnesses as a result of the ingestion of food products contaminated with pathogens. Foodborne illnesses not only result in suffering and permanent ...

Removal of Copper(II) and Lead(II) from Soils by Poly(Amidoamine) Dendrimers and Reductive Immobilization of Chromium(VI) by Stabilized Zero-Valent Iron Nanoparticles

Xu, Yinhui (2006-08-15)

This research investigated the feasibility of using poly(amidoamine) PAMAM dendrimers for removal of copper(II) and lead(II) from soils, and using a new class of stabilized zero-valent iron (ZVI) nanoparticles for reductive ...

Static, Dynamic and Acoustical Properties of Sandwich Composite Materials

Yu, Zhaohui (2007-05-15)

Sandwich composite materials have been widely used in recent years for the construction of spacecraft, aircraft, and ships, mainly because of their high stiffness-to-weight ratios and the introduction of a viscoelastic ...

Structural and Electrical Characterization of Highly Oriented (KxNax)NbO3 (KNN) Thin Films By Chemical Solution Deposition

Kang, Chi (2009-05-15)

(K0.5Na0.5)NbO3 (KNN) perovskite materials have been developed as promising lead-free piezoelectric materials for environmentally and biologically benign piezoelectric devices. To date, however, there are few reports on ...

A Study on the Electromechanical Response of Polyvinylidene Fluoride Base Electroactive Polymers

Cai, Yancen (2018-12-10)

A novel ionic polymer metal composite (IPMC) actuator based on partially fluorinated ionomer composed of polyvinylidene fluoride (PVDF) and perchlorate is successfully developed. The PVDF-base films are prepared by solution ...

A Study on the Electromechanical/Dielectric Response of Poly(ethylene oxide)-Nanocrystalline-Cellulose Composites and Polyvinylidene Fluoride Electroactive Polymers

Bass, Patrick (2016-05-05)

The study of electroactive polymers (EAPs) has garnered a lot of attention over the past two decades for their ability to generate large electromechanical actuation responses without the need for any moving parts, external ...

Surface Dynamics of a DNA Loop Formation Using Surface Plasmon Resonance

Yang, Fuling (2015-05-07)

Electrochemical proximity assay (ECPA), was recently developed for direct protein quantitation as low as 10 fM. In this assay, the loop-like structure holds methylene blue (MB) in close proximity with the gold surface when ...

Synthesis and Characterization of Nanostructured ZnO and SnOx for VOC Sensor Devices

Ahn, Hosang (2011-11-22)

In this dissertation, nanostructured ZnO and SnOx with various forms of thin films, particles and rods were deposited and synthesized by combination of sputtering, thermolysis assisted chemical solution method, and/or dc ...