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Mechanochromic Fluorescent Probe Molecules for Damage Detection in Aerospace Polymers and Composites
(2013-07-25)
The detection of damage in aerospace composites can be improved by incorporation of mechanochromic fluorescent probe molecules into the polymers used in composite parts. This study focuses on a novel series of mechanochromic probes, AJNDE15 and AJNDE17, which are incorporated in structural epoxy resin DGEBA-DETA. Chapter 1 ...
Synthesis and Characterization of Fe70Pd30 Nanohelices
A device performing controlled actuation and motion at the nanoscale will be the essential component for future nanoelectromechanical systems. Fe70Pd30 ferromagnetic shape memory (FSMA) alloy shows multi-functional effects, including conventional shape memory effect, superelasticity, ferromagnetic shape memory effect, ...
Evaluations on the Durability of Magnesia Magnesium Aluminate (MMA) Solid Oxide Fuel Cell Materials
Solid oxide fuel cells (SOFCs) are one of the most promising candidates for generating clean energy. Also known as “all ceramic” fuel cells, SOFCs use a range of advanced ceramic components to achieve the functionality that is required to attain high levels of efficiency, which exceed most other types of fuel cell systems. ...
Highly Conductive Silver Flake/nanowire Composites Inks and 3D Printing Processing in Flexible Electrodes Application
Nowadays, conductive ink has attracted our attention in research and industry due to their popularity in printed electronics. Among various conductive inks, silver ink has been explored deeply and widely because its high conductivity and stability. However, with the requirement of different printed electronics especially ...
Real-time photoelectron spectroscopy study of the oxidation reaction kinetics on p-type and n-type Si (001) surfaces
Silicon oxides thermally grown on Si surface are the core gate materials of metal-oxide-semiconductor field effect transistor (MOSFET). This thin oxide layer insulates the gate terminals and the transistors substrate which make MOSFET has certain advantages over those conventional junctions, such as field-effect transistor ...
Chitosan-Based Bilayer Hydroxyapatite Nanorod Composite Scaffolds for Osteochondral Regeneration
Osteochondral defects involve injury to bone and cartilage. As articular cartilage is worn down, bone in the joint begins to rub together, causing bone spurs. This is known as osteoarthritis, and is a common issue among the aging population. This problem presents an interesting opportunity for tissue engineering. Tissue ...
Organic Semiconducing Thin Films: Device Applications and Beyond
Organic semiconductors show great promise for device applications, particularly as organic thin film transistors (OTFTs) and organic photovoltaics (OPVs), due to their potential for low cost, high volume fabrication when compared to traditional inorganic semiconductors. While the performance of organic devices generally lags ...
Optics and Optoelectronics of Two-dimensional Semiconducting Monolayers and Heterostructures
Until recently, the physics of truly two-dimensional (2D) excitons could only be explored theoretically. Following the discovery of graphene, many 2D materials were quickly identified and isolated, one system being the semiconducting Group VI-B transition metal dichalcogenides (TMDs). These semiconductors are the first ...
Controlling Long-Range Ordered Self-assembly of Solid-Binding Peptide Monolayers on Atomically Flat Layered Materials
Solid-binding short peptides offer great promise as molecular building blocks in nanotechnology and nanomedicine. Some of these peptides can form self-organized nanostructures on solid surfaces due to highly specific coordination of inter-molecular forces enabled by conformational changes in the peptide. This study aims to ...
Synthesis of Silver Nanoparticle Based Conductive Inks for Additively Manufactured Electronics
Printed electronics is an emerging area of study at the forefront of additive manufacturing technology. Additively manufactured electronic devices have many novel application areas, including three-dimensional microbatteries, electrically small antennas, spanning electrodes and printed circuit boards. Conductive features, the ...