Mark Johnson Email & Phone Number

Corvallis, Oregon Area

• Support engineer/chemist for surface analysis using TOF-SIMS, scanning probe microscopy, optical profilometry Auger electron spectroscopy, and XPS.
• Physical and electrical characterization of semiconductor materials o Used SPM for semiconductor dopant profiling, nanoindentation, surface conductivity, surface potential measurements, adhesion forces, thin film.
• AFM, SCM, SSRM, TUNA, SSPM, STM
• Optical profilometry/scanning white light interferometry
• Surface compositional analysis using Auger electron spectroscopy, XPS and TOF-SIMS.

Bound Brook, New Jersey, United States

• Manager of the Gas Chromatography Skills Center, Union CarbidePerformed gas chromatography method development. Developed methods to measure trace level impurities (PPM and PPB) in polymers and monomers including the.
• Headspace SPME method to measure PPB levels of trimethylamine in ethoxylated methylglucoside
• method to measure PPM levels of alkanolamines in polyethylene oxide
• method to measure PPB level chlorinated impurities in EPDM
• method to identify and quantify botanical oils added to polyethylene oxide
• method to quantify cyclopentadiene in ethylidene norborneneNMR spectroscopy of polymers and catalysts using Varian 400 MHz NMRSolved problems using X-ray photoelectron spectroscopy including

San Jose, California, United States

• Performed chromatographic software testing of HPLC software. Software was tested using a USP method that applied reverse phase HPLC for the analysis of steroids.
• Performed HPLC system comparisons with competitor’s systems.

Alameda, California, United States

• Developed, built and tested pilot scale photocatalytic air cleaners for the gas phase photooxidation of formaldehyde and other VOC's. Developed and tested novel photocatalysts for VOC oxidation.
• Performed analyses of low concentration (PPBV) VOC's to evaluate air cleaner performance by GC and GCMS methods.
• Wrote reports to funding agencies including NIST and EPRI

San Jose, California, United States

• Explained and predicted photooxidation kinetics for a variety of chlorinated hydrocarbons.
• Helped develop a hydrothermal treatment process for chloroacetic acids. Designed, built and tested a pilot scale high pressure hydrothermal reactor.
• Wrote final report to EPA

Darien, Illinois, United States

Researched intramolecular hole transfer rates in organic radical ions using picosecond time resolved pulse radiolysis.

Ph.D., Physical Chemistry

Bachelor Of Science - Bs, Chemistry