A5063923197- Semiconductor materials and devices
- Electronic and Structural Properties of Oxides
- Catalytic Processes in Materials Science
- Gas Sensing Nanomaterials and Sensors
- Advancements in Battery Materials
- Analytical Chemistry and Sensors
- Analytical Chemistry and Chromatography
- biodegradable polymer synthesis and properties
- Electrospun Nanofibers in Biomedical Applications
- Radioactive element chemistry and processing
- Forensic Fingerprint Detection Methods
- Photonic and Optical Devices
- Advanced Chemical Sensor Technologies
- ZnO doping and properties
- Advanced Fiber Optic Sensors
- Acoustic Wave Resonator Technologies
- Crystallography and molecular interactions
- Polymer Nanocomposites and Properties
Applied Materials (United States)
2024
Stanford University
2022-2023
University College Cork
2015-2017
Xinjiang University
2008-2009
Yokohama National University
2008-2009
Recent progress in the simulation of chemistry atomic layer deposition (ALD) is presented for technologically important materials such as alumina, silica, and copper metal. Self-limiting chemisorption precursors onto substrates studied using density functional theory so to determine reaction pathways aid process development. The main challenges future ALD modeling are outlined.
Polyaramides, such as Kevlar, are of great technological importance for their extraordinary mechanical performance. As fibers, they used in personal safety, reinforcement tires and ropes, further material composites that require extreme stability. However, the properties polymer depend on environmental conditions. Specifically, elevated temperatures and/or irradiation with UV light seriously affect its toughness. Classical approaches to protect polyaramide fibers from these external factors...
Organic–inorganic hybrid materials are of great demand not at least for their enormous application potential in flexible devices. Atomic or molecular layer deposition (ALD MLD) and vapor phase infiltration (VPI) offer novel pathways the fabrication such hybrids, but a clear understanding chemistry between vaporized precursors functional molecules is still lacking. In this work, interactions trimethylaluminum (TMA) organic groups OH, NH 2 , NO respective substituted phenyls, as well...
An optical waveguide (OWG) sensor for the detection of BTX gases is reported. The highly sensitive element this was made by coating copper Nafion film over a single-mode potassium ion exchanged glass OWG. We used OWG to detect toluene gas as typical example gas. exhibits linear response in range 0.25-4250 ppm with and recovery times less than 25 s. has short time, high sensitivity, good reversibility.
An optical sensor sensitive to BTX has been developed by spin coating a thin film of polyacrylate resin onto tin- diffused glass waveguide. A pair prism coupler was employed for coupling matched with diiodomethane (CH2I2). The guided wave transmits in waveguide layer and passes through the as an evanescent wave. Polyacrylate strong capacity absorbing oil gases. is stable N2 but benzene exposure at room temperature can result rapid reversible changes transmittance (T) refractive index (n1)...
The polymers are stabilized appreciably by intra-chain dispersion forces. Localization of negative charge imparts sufficient local hardness for polymerization to continue independently chain length.
In this study, we introduce and alter electrical conduction into para-aramid (aka Kevlar) fibers by utilizing vapor phase infiltration (VPI) to the metal oxide semiconductors ZnO In2O3, thereby creating a functional hybrid material. VPI leads an inverted, matrix doping of introduced semiconductor surrounding polymer. The initial insulating contains benzenoid rings in its backbone. During infiltration, some these transform quinoid rings, causing change charge density within polymer chain....
The molecular layer deposition (MLD) method can be used to deposit hybrid organic–inorganic films with precisely defined composition, flexible properties, and conformality on different substrates. In this study, hafnium-based polymer were studied as potential coatings for silicon nanoparticles (SiNPs) in composite lithium-ion battery (LIB) anodes, an application which requires the film both stable under electrochemical conditions. Hf-hybrid successfully deposited by MLD using sequential...
Molecular layer deposition (MLD) processes involving two precursors are commonly employed for the growth of conformal thin films. However, use limits combinations material properties that can be accessed during film synthesis. Here, we develop a robust, three-precursor MLD process hybrid incorporates desirable acrylate, methyl-methacrylate (MMA), together with aluminum into its repeating structure. We report rate 3.5 Å/cycle at 110 °C, constant per cycle between 100 and 130 good stability...