A5080570385- Analytical Chemistry and Chromatography
- Phase Equilibria and Thermodynamics
- Microfluidic and Capillary Electrophoresis Applications
- Mass Spectrometry Techniques and Applications
- Chromatography in Natural Products
- Analytical chemistry methods development
- Coal and Coke Industries Research
- Crystallization and Solubility Studies
- Electrospun Nanofibers in Biomedical Applications
- Thermochemical Biomass Conversion Processes
- Diffusion Coefficients in Liquids
- Chemical Thermodynamics and Molecular Structure
- Adsorption, diffusion, and thermodynamic properties of materials
- Ion-surface interactions and analysis
- Carbon Nanotubes in Composites
- Advanced Chemical Sensor Technologies
- Protein purification and stability
- Thermodynamic properties of mixtures
- Electrohydrodynamics and Fluid Dynamics
- Carbon dioxide utilization in catalysis
- Advanced Chemical Physics Studies
- Ionic liquids properties and applications
- Metal Extraction and Bioleaching
- Catalysis and Oxidation Reactions
- Process Optimization and Integration
The Ohio State University
2015-2025
Materials Processing (United States)
2006
Columbus Center
2003
MACOM (United States)
1989-1991
University of North Carolina at Chapel Hill
1988-1989
Indiana University Bloomington
1984-1987
University of Wisconsin–Madison
1984
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCapillary Electrophoresis Inductively Coupled Plasma Spectrometry for Rapid Elemental SpeciationJohn W. Olesik, Jeffery A. Kinzer, and Susan V. OlesikCite this: Anal. Chem. 1995, 67, 1, 1–12Publication Date (Print):January 1995Publication History Published online1 May 2002Published inissue 1 January 1995https://pubs.acs.org/doi/10.1021/ac00097a003https://doi.org/10.1021/ac00097a003research-articleACS PublicationsRequest reuse permissionsArticle...
A method of producing solid-phase microextraction (SPME) fibers based on electrospinning polymers into nanofibrous mats is demonstrated. Using this the polymer mat attached to a stainless steel wire without need binder. While applicable any that can be electrospun, polymeric negative photoresist, SU-8 2100, used for initial study. SPME devices composed carbon nanofibers are also illustrated by pyrolyzing produce amorphous carbon. Nonpolar compounds, benzene, toluene, ethylbenzene, and...
Techniques for microfluidic channel fabrication in soda-lime glass and fused quartz using femtosecond laser ablation conjunction with polymer coating surface roughness improvement were tested. Systematic experiments done to characterize how process variables (laser fluence, scanning speed focus spot overlap, material properties) affect the machining feature size quality. Laser fluence overlap showed strongest influence on depth roughness. At high was measured be between 395 nm 731 RMS. low...
ABSTRACT Small diameter nanofibers of silica and silica/polymer are produced by electrospinning silica/polyvinylpyrrolidone (SiO 2 /PVP) mixtures composed nanoparticles dispersed in polyvinylpyrrolidone solutions. By controlling various parameters, 380 ± 100 nm composite were obtained with a high concentration (57.14%). When the polymer was low, “beads‐on‐a‐string” morphology resulted. Nanofiber affected applied voltage relative humidity. Tip‐to‐collector distance did not affect nanofiber or...
A capillary electrophoresis model was modified to include the effect of laminar flow. Experimental results using inorganic ions with a wide range mobilities were compared predictions. The flow rate on analysis time, peak widths, asymmetry, and electrophoretic resolution is discussed. in controlled by regulating sheath concentric nebulizer interface. Laminar direction detector allows positive, neutral, negative species, all one run, less than 2 min. By increasing electrolyte rate, can be...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHigh-performance liquid chromatography using mobile phases with enhanced fluidityYi. Cui and Susan V. OlesikCite this: Anal. Chem. 1991, 63, 17, 1812–1819Publication Date (Print):September 1, 1991Publication History Published online1 May 2002Published inissue 1 September 1991https://pubs.acs.org/doi/10.1021/ac00017a028https://doi.org/10.1021/ac00017a028research-articleACS PublicationsRequest reuse permissionsArticle...
A technique for creating devices ultrathin layer chromatography (UTLC) using an electrospinning method is described. The use a nanofibrous stationary phase with fiber diameters that are 400 nm. Separations of mixtures laser dyes and steroidal compounds were performed to illustrate the capabilities these new UTLC media. complete analyses found require very little development time less solvent than typical TLC methods. efficiency separations was substantially improved compared determined...
With increasing interest in the detection of disease-related volatile organic compounds (VOCs) found human breath, breath analysis could prove to be a very useful diagnostic tool, especially for early lung cancer. Solid-phase microextraction (SPME) is technique well suited and has been applied studying VOCs nanomolar concentration range. However, many are excreted at picomolar concentrations may unsuitable using conventional SPME sorbent phases. To extend range SPME, novel 4-cm-long,...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTGas-phase heats of formation C7H7+ isomers: m-tolyl, p-tolyl, and benzyl ionsTomas. Baer, J. C. Morrow, Jian Dong. Shao, Susan. OlesikCite this: Am. Chem. Soc. 1988, 110, 17, 5633–5638Publication Date (Print):August 1, 1988Publication History Published online1 May 2002Published inissue 1 August 1988https://pubs.acs.org/doi/10.1021/ja00225a008https://doi.org/10.1021/ja00225a008research-articleACS PublicationsRequest reuse permissionsArticle...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTComparison of Enhanced-Fluidity and Elevated-Temperature Mobile Phases in Reversed-Phase High-Performance Liquid ChromatographyStephen T. Lee Susan V. OlesikCite this: Anal. Chem. 1994, 66, 24, 4498–4506Publication Date (Print):December 15, 1994Publication History Published online1 May 2002Published inissue 15 December 1994https://pubs.acs.org/doi/10.1021/ac00096a016https://doi.org/10.1021/ac00096a016research-articleACS PublicationsRequest reuse...
The use of enhanced-fluidity liquid chromatography (EFLC) for chiral separations was demonstrated on a macrocyclic antibiotic column, Chirobiotic-V. This technique compared to high performance (HPLC) and supercritical fluid (SFC) the separation compounds in normal-phase mode. highest resolution always observed EFLC condition. Higher efficiency shorter retention time were also most with portions CO(2) range 0-50 mol %. Larger amounts caused decrease be prolonged. For some separations,...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTReaction monitoring in supercritical fluids by flow injection analysis with Fourier transform infrared spectrometric detectionS. V. Olesik, S. B. French, and M. NovotnyCite this: Anal. Chem. 1986, 58, 11, 2256–2258Publication Date (Print):August 1, 1986Publication History Published online1 May 2002Published inissue 1 August 1986https://pubs.acs.org/doi/10.1021/ac00124a030https://doi.org/10.1021/ac00124a030research-articleACS PublicationsRequest...
Electrospun polymeric nanofibers (polyacrylonitrile, poly(vinyl alcohol), and SU-8 photoresist) carbon pyrolyzed to final temperatures of 600, 800, 900 °C were used as substrates for surface-assisted laser desorption/ionization (SALDI) matrix-enhanced (ME-SALDI) analyses. Sample preparation analytes using the electrospun target plate SALDI analysis is simple fast. Signal enhancements poly(ethylene glycol) noted with nanofibrous compared those obtained commercially available stainless steel...
Polyacrylonitrile/Nafion®/carbon nanotube (PAN/Nafion®/CNT) composite nanofibers were prepared using electrospinning. These electrospun studied as possible substrates for surface-assisted laser desorption/ionization (SALDI) and matrix-enhanced time-of-flight mass spectrometry (ME-SALDI/TOF-MS) the first time in this paper. Electrospinning provides novel substrate with a uniform morphology narrow size distribution, where CNTs evenly firmly immobilized on polymeric nanofibers. The results show...