|2004 - Present||Associate Professor, University of Dayton ‐ Electrical and Computer Engineering|
|Present||Senior Research Engineer, University of Dayton ‐ Nanochemistry and Nanoengineering, University of Dayton Research Institute|
Honors and Awards
- IEEE Dayton Section Noble award for achievements in Electronic Devices, 2011
- ECE 204 Electronic Devices
- ECE 316 Electric Energy Systems
- ECE 581 Nanoelectronics
- ECE 583 Advanced Photovoltaics
- EGR 203 Electrical Circuits
- ECE 595 (experimental) Introduction into Thin Film Engineering
|2013||MBA, University of Dayton|
|2000||PhD, State University of New York at Buffalo ‐ Electrical and Computer Engineering|
|1993||MS, Moscow State Technical University ‐ Electronics|
|1991||BS, Moscow State Technical University ‐ Electronics|
Location: Kettering Laboratories Room 562
Carbon Quantum Dots and Applications in Photocatalytic Energy Conversion ACS Applied Materials & Interfaces (2015)
Quantum dots (QDs) generally refer to nanoscale particles of conventional semiconductors that are subject to the quantum-confinement effect, though other nanomaterials of similar optical and redox properties are also named as QDs even in the ...
Visible-Light Photoconversion of Carbon Dioxide into Organic Acids in an Aqueous Solution of Carbon Dots Langmuir (2014)
Carbon “quantum” dots (or carbon dots) have emerged as a new class of optical nanomaterials. Beyond the widely reported bright fluorescence emissions in carbon dots, their excellent photoinduced redox properties that resemble those found in ...
The Use of 1,2-Epoxyhexane as a Passivating Agent for Core–Shell Aluminum Nanoparticles with Very High Active Aluminum Content Solid State Sciences (2013)
Aluminum nanoparticles synthesized by titanium (IV) isopropoxide-initiated decomposition of alane have been passivated and capped using oligomerization of 1,2-epoxyhexane. Preliminary synthetic protocols with this capping agent, where the nanoparticle formation reaction and passivation processes were ...
Synthesis of Aluminum Nanoparticles capped with Copolymerizable Epoxides Journal of Nanoparticle Research (2013)
We report on the synthesis of air-stable aluminum nanoparticles (Al NPs) capped with 1,2-epoxy-9-decene. Long-chain epoxides have proven to be effective capping agents for Al NPs as the epoxide ring is highly susceptible to ring-opening ...
Comparison of Post-Detonation Combustion in Explosives Incorporating Aluminum Nanoparticles: Influence of the Passivation Layer Journal of Applied Physics (2013)
Aluminum nanoparticles and explosive formulations that incorporate them have been a subject of ongoing interest due to the potential of aluminum particles to dramatically increase energy content relative to conventional organic explosives. We have used ...
A Threshold-Based Approach to Calorimetry in Helium Droplets: Measurement of Binding Energies of Water Clusters Review of Scientific Instruments (2012)
Helium dropletbeam methods have emerged as a versatile technique that can be used to assemble a wide variety of atomic and molecular clusters. We have developed a method to measure the binding energies of clusters ...
Efficient Fluorescence Quenching in Carbon Dots by Surface-Doped Metals - Disruption of Excited State Redox Processes and Mechanistic Implications Langmuir (2012)
The carbon dots in this study were small carbon nanoparticles with the particle surface functionalized by oligomeric poly(ethylene glycol) diamine molecules. Upon photoexcitation, the brightly fluorescent carbon dots in aqueous solution served the function of ...
Carbon Nanoparticles as Chromophores for Photon Harvesting and Photoconversion ChemPhysChem (2011)
Carbon nanomaterials have generated a tremendous amount of attention in the scientific community. While most of the research and development efforts have been on fullerenes, carbon nanotubes, and graphene sheets, carbon nanoparticles (which are often ...
Size-Dependent Nanoparticle Reaction Enthalpy: Oxidation of Aluminum Nanoparticles Journal of Physics and Chemistry of Solids (2011)
Here we present a model describing the particle size dependence of the oxidation enthalpy of aluminum nanoparticles. The model includes the size dependence of the cohesive energy of the reactant particles, the size dependence of ...
Aluminum Nanoparticles Capped by Polymerization of Alkyl-Substituted Epoxides: Ratio-Dependent Stability and Particle Size Inorganic Chemistry (2011)
We report here on the polymerization of epoxide monomers on incipient aluminum nanoparticle cores and the effects of changing the epoxide-capping precursor and the metallic monomer ratio on the resultant stability and particle size of ...
Carbon Nanoparticles as Visible-Light Photocatalysts for Efficient CO2 Conversion and Beyond Journal of the American Chemical Society (2011)
Increasing atmospheric CO2 levels have generated much concern, driving the ongoing carbon sequestration effort. A compelling CO2 sequestration option is its photocatalytic conversion to hydrocarbons, for which the use of solar irradiation represents an ultimate ...
Chemical Dynamics of Aluminum Nanoparticles in Ammonium Nitrate and Ammonium Perchlorate Matrices: Enhanced Reactivity of Organically Capped Aluminum Journal of Physical Chemistry C (2011)
Aluminum nanoparticles have been a subject of active investigation in recent years because of their potential to enhance the energy content of energetic materials. The associated kinetics of the chemical reaction and energy release are, ...
Fluorescence Decoration of Defects in Carbon Nanotubes Journal of Physical Chemistry C (2010)
Well-dispersed and functionalized carbon nanotubes exhibit visible fluorescence emissions due to passivated defects on the nanotube surface. It was found in this study that the defects in nanotubes could be decorated by an inorganic salt, ...
Multispectroscopic (FTIR, XPS, and TOFMS−TPD) Investigation of the Core−Shell Bonding in Sonochemically Prepared Aluminum Nanoparticles Capped with Oleic Acid Journal of Physical Chemistry C (2010)
Organically capped metal nanoparticles are an attractive alternative to more conventional oxide-passivated materials, due to the lower reaction temperatures and the possibility of tuning the organic coating. Sonochemical methods have been used to produce small ...
Preparation and Characterization of Alane Complexes for Energy Applications Journal of Physical Chemistry C (2010)
Alane (AlH3) has attracted much recent attention for various energy related applications. Amines are commonly used as stabilization agents in alane complexes, with N-methylpyrrolidine (NMP) in particular for favorable properties. However, there have been complications ...
Spontaneous Hydrogen Generation from Organic-Capped Al Nanoparticles and Water ACS Applied Materials & Interfaces (2010)
The development of technologies that would lead toward the adoption of a hydrogen economy requires readily available, safe, and environmentally friendly access to hydrogen. This can be achieved using the aluminum−water reaction; however, the protective ...
Heat Release Measurements on Micron and Nano-Scale Aluminum Powders Thermochimica Acta (2009)
Aluminum nanoparticles are a focus of active research largely due to their attractive oxidation energetics and fast reaction kinetics compared with micron-scale or larger particles. A large number of different aluminum powders are currently available ...
Capping and Passivation of Aluminum Nanoparticles Using Alkyl-Substituted Epoxides Langmuir (2009)
We report here on the synthesis and passivation of small (20−30 nm) aluminum nanoparticles using alkyl-substituted epoxides as capping agents. FTIR and 13C NMR spectroscopy indicate that the epoxides polymerize to form a polyether cap ...
Formation and Properties of Stabilized Aluminum Nanoparticles ACS Applied Materials & Interfaces (2009)
The wet-chemical synthesis of aluminum nanoparticles was investigated systematically by using dimethylethylamine alane and 1-methylpyrrolidine alane as precursors and molecules with one or a pair of carboxylic acid groups as surface passivation agents. Dimethylethylamine alane ...
Sonochemically Assisted Thermal Decomposition of Alane N,N-Dimethylethylamine with Titanium (IV) Isopropoxide in the Presence of Oleic Acid to Yield Air-Stable and Size-Selective Aluminum Core−Shell Nanoparticles Journal of Physical Chemistry C (2009)
Using sonochemistry to provide the thermal energy and mixing, we demonstrate the ability to synthesize air-stable aluminum nanoparticles of two different size distributions from the titanium-catalyzed thermal decomposition of alane. Characterization data indicate the presence ...
Templated Synthesis of Aluminum Nanoparticles - A New Route to Stable Energetic Materials Journal of Physical Chemistry C (2009)
Nanoscale structural cavities in ionomer membrane films were used as templates for the facile synthesis of small aluminum nanoparticles via catalytic decomposition of an alane precursor. The loading of reactive aluminum in the composite film ...
Synthesis and Characterization of Srilankite Nanowires Journal of Nanoscience and Nanotechnology (2008)
We describe the synthesis and characterization of srilankite (Ti2ZrO6) nanowires. The nanowires are produced via hydrothermal synthesis with a TiO2/ZrO2 mixture under alkaline conditions. The zirconium titanate nanowires have median diameters of 60 nm and ...
Formation of Protein−Metal Oxide Nanostructures by the Sonochemical Method: Observation of Nanofibers and Nanoneedles Langmuir (2007)
The sonochemical reaction of iron pentacarbonyl is explored in water and in water with the protein BSA (bovine serum albumen). In water, the reaction is found to produce spherical nanoparticles of magnetite (Fe3O4) with a ...
Functional Nanoparticles in Thin Films as Sensing Media Reviews on Advanced Materials Science (2005)
The combination of unique properties offered by materials on the nanoscale with the increased role of surface chemistry in nanostructured solids makes core-shell nanoparticles extremely attractive for application to "smart" thin-film coatings. Sensing properties of ...
The Role of Nucleation and Heteroepitaxial Processes in Nanostructuring of Si Journal of Electronic Materials (2002)
Self-assembly represents a large prospective class of nanoscale fabrication techniques for future electronics. Understanding the mechanisms underlying the processes of nanostructure formation is crucial for establishing the control over their dimensions, spatial distribution, and uniformity. ...