个人简介

Class of 1940 W. Howard Ector Outstanding Teacher Award, 2012 Georgia Tech Outstanding Undergraduate Research Mentor Award, 2007

研究领域

Analytical Chemistry/Characterization/Nanoscience and Technology/Surface and Interfacial Chemistry/Theory and Modeling

Bottomley's research interests are in scanning probe microscopy, electroanalytical chemistry, and surface enhanced Raman scattering. Current projects under active investigation are: Probing Single Molecule Interfacial Interactions with Scanning Probe Microscopy. The research objective of this NSF-sponsored project is to determine if the conformation of a single polymer molecule on a surface can be accurately determined using the scanning probe microscope. This objective is being achieved by synthesizing alternating block copolymers comprised of well-defined surface affinities and molecular structures, imaging these molecules adsorbed onto a variety of surfaces, and then using dynamic force spectroscopy to repeatedly adsorb and detach the molecule from each of these surfaces. Correlation of the forces required to peel the molecule from a given surface with its molecular composition and structure will enable identification of the three-dimensional polymer’s interfacial structure. If successful, this interdisciplinary collaborative effort will lead to a better understanding of how polymeric coatings interact with underlying surfaces and improved control over the interfacial properties of materials. Understanding the adsorption, desorption and conformation of polymers on substrates is extremely important in defining colloidal material interactions. Colloidal interactions are important in biomass conversion into biofuels, oil recovery, mining, food processing, papermaking, and water treatment. Theory and Application of Cyclic Square Wave Voltammetry. The objective of this research endeavor is to develop Cyclic Square Wave Voltammetry (CSWV) as a mechanistic tool for the identification of electrode reactions. To achieve this objective, we are developing diagnostic criteria specific for a wide range of mechanisms involving reversible, kinetically-controlled, and/or chemically-coupled reactions for diffusible as well as surface-confined redox active species. For each mechanism, a reaction is written for the electron transfer step and the conditions under which it occurs. Appropriate boundary conditions for this system are applied. The resultant partial differential equations are solved for the CSWV waveform. The solutions are a set of equations describing concentrations of the reactants and products as a function of time. These equations are inserted into the Butler-Volmer relationship to describe the current response as a function of potential with a single equation that contains one or more integrals. The current response is converted into a dimensionless current to remove the electrode area and reactant concentration from the equation. Next, the Nicholson-Olmstead method is used to replace the integrals within the dimensionless current equation to summations which can be expressed numerically and the resultant numerical solution is coded in MATLAB. The MATLAB code is then used to predict current-potential data sets resulting from systematic variation of empirical and intrinsic parameters for the specific electrode reaction mechanism understudy. These data sets are then analyzed to determine trends in the peak currents, peak potentials, peak widths, peak current ratios, and peak separations with variation in step time, step height, switching potential, pulse height, heterogeneous rate constant, and the electron transfer coefficient. From these trends, diagnostic criteria specific to the mechanism understudy is generated. The criteria is then tested experimentally by acquiring current-voltage-time-concentration data sets on redox active solutes whose electrode reaction mechanism has been previously determined. As the criteria for a given mechanism is identified, we will broadly disseminate this information so that others can make use of them in the characterization of the electrochemical properties of newly synthesized compounds and materials. We are especially interested in presenting the results of our research in a manner that will be easily understood by non-specialists and in a format that will be readily accessible to researchers worldwide.

近期论文

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Supercapacitor Electrodes Based on Three-Dimensional Copper Structures with Precisely Controlled Dimensions. A. Armutlulu, L. A. Bottomley, S. A. Bidstrup Allen and M. G. Allen ChemElectroChem. 2015, 2, 236-245. Effect of Water Absorption on Pollen Adhesion. H. Lin, L. Lizarraga, L. A. Bottomley and J. C. Meredith Journal of Colloid and Interface Science. 2015, 442, 133-139. An operando surface enhanced Raman spectroscopy (SERS) study of carbon deposition on SOFC anodes. X. Li, M. Liu, J-P. Lee, D. Ding, L. A. Bottomley, S. Park and M. Liu Physical Chemistry Chemical Physics. 2015, 17, in press. In Situ Probing the Mechanisms of Coking Tolerance on Catalyst-Modified Anodes for SOFCs. X. Li, M. Liu, S. Lai, D. Ding, M. Gong, J.-P. Lee, K. Blinn, Y. Bu, Z. Wang, L. A. Bottomley, F. Alamgir, and M. Liu Chemistry of Materials. 2015, 27, 822-828. Empirical correlation of the response of coiled carbon nanotubes to axial compression with morphology.. J. R. Barber, J. S. Boyles, A. A. Ferri, and L. A. Bottomley Journal of Nanotechnology. 2014, Article ID 616240, 12 pages. Peeling of Long, Straight Carbon Nanotubes from Surfaces.. K. M. Barker, M. A. Poggi, L. Lizarraga, P. T. Lillehei, A. A. Ferri, and L. A. Bottomley Journal of Nanotechnology. 2014, Article ID 349453, 11 pages. Diagnostic Criteria for the Characterization of Quasireversible Electron Transfer Reactions by Cyclic Square Wave Voltammetry.. M. A. Mann, J. C. Helfrick, Jr., and L. A. Bottomley Analytical Chemistry. 2014, 86(16), 8183-8191. High-temperature surface enhanced Raman spectroscopy for in situ study of solid oxide fuel cell materials. X. Li, J.-P. Lee, K. S. Blinn, D. Chen, S. Yoo, B. Kang, L. A. Bottomley, M. A. El-Sayed, S. Park, and M. Liu Energy & Environmental Science. 2014, 7, 306-310. Well-Organized Raspberry-like Ag@Cu Bimetal Nanoparticles for Highly Reliable and Reproducible Surface-Enhanced Raman Scattering. J.-P. Lee, D. Chen, X. Li, S. Yoo, L. A. Bottomley, M. El-Sayed, S. Park, and M. Liu Nanoscale. 2013, 5(23), 11620-11624. Polystyrene Beads as Probes of the SERS Response Characteristics of Silver Nanorod Arrays.. N. E. Marotta and L. A. Bottomley Applied Spectroscopy. 2013, 67(6), 614-619. Limitations of Surface Enhanced Raman Scattering in Sensing DNA Hybridization are Demonstrated by the Use of Label-Free DNA Oligos as Molecular Rulers of Distance-Dependent Enhancement.. N. E. Marotta, K. R. Beavers, and L. A. Bottomley Analytical Chemistry. 2013, 85(3), 1440-1446. Probing and Mapping Electrode Surfaces in Solid Oxide Fuel Cells.. K. Blinn, X. Li, M. Liu, L. A. Bottomley, and M. Liu Journal of Visualized Experiments. 2012, e50161. Raman Spectroscopic Monitoring of Carbon Deposition on Hydrocarbon-Fed Solid Oxide Fuel Cell Anodes.. K. S. Blinn, H. Abernathy, X. Li, M. Liu, L. A. Bottomley, and M. Liu Energy and Environmental Science. 2012, 5, 7913-7917. Application of Surface Enhanced Raman Spectroscopy to the Study of SOFC Electrode Surfaces. X. Li, K. Blinn, Y. Fang, M. Liu, M. Mahmoud, S. Cheng, L. A. Bottomley, M. El-Sayed, and M. Liu Physical Chemistry Chemical Physics. 2012, 14, 5919–5923. Adhesive and Mechanical Properties of Carbon Nanotube Probes Contacting Chemically-Treated Surfaces. K. M. Barker, A. A. Ferri, and L. A. Bottomley ASME Conference Proceedings. 2011, 739-746. Removal of Surface Contamination and Self-Assembled Monolayers from Ag Nanorod Substrates by Plasma Cleaning with Argon. P. Negri, N. E. Marotta, L. A. Bottomley, and R. A. Dluhy Applied Spectroscopy. 2011, 65(1), 66-74. Anthraquinone compounds as redox mediators for enhanced continuous-flow anaerobic biotransformation of reactive dyes under hypersaline conditions. Y. H. Lee, L. A. Bottomley, and S. G. Pavlostathis Desalination and Water Treatment. 2011, 33, 68-76. Thermal Stability of Silver Nanorod Arrays.. K. R. Beavers, N. E. Marotta, L. A. Bottomley Chemistry of Materials. 2010, 22(7), 2184-2189. Surface Enhanced Raman Scattering of Bacterial Cell Culture Growth Media. N. E. Marotta and L. A. Bottomley Applied Spectroscopy. 2010, 64(6), 601-606. Cyclic Square Wave Voltammetry of Single and Consecutive Reversible Electron Transfer Reactions.. J. C. Helfrick, Jr. and L. A. Bottomley Analytical Chemistry. 2009, 81(21), 9041–9047.