Tim Deschaines

Madison, Wisconsin, United States Contact Info
2K followers 500+ connections

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About

I am a skilled and experienced Product Manager and Analytical Chemist with a diverse…

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Experience & Education

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Licenses & Certifications

  • Optimal Product Management and Product Marketing

    The 280 Group

    Issued
    Credential ID 32541641

  • Chemical Engineering and Process Fundamentals for Chemists Short Course

    American Chemical Society - Professional Education

  • Chemical Shipping Training

    University of Wisconsin Environmental Health and Safety

  • Fume Hood Training

    University of Wisconsin Environmental Health and Safety

  • Radiation Safety

    Phoenix Nuclear Labs

  • Radiation Safety for Radiation Workers

    University of Wisconsin Environmental Health and Safety

  • Working Safely with Chemicals

    University of Wisconsin Environmental Health & Safety

Volunteer Experience

  • Volunteer - email moderator, socializer, and foster

    Dane County Friends of Ferals

    - 4 years 1 month

    Animal Welfare

    Volunteered to work with a no-kill feral cat rescue. I spent time socializing cats, helping out at adoption fairs, and fostering rescues. I also acted as the moderator for the primary e-mail list of the organization.

Publications

  • Improved Principal Component Discrimination of Commercial Inks Using Surface-Enhanced Resonant Raman Scattering

    Spectroscopy

    Showing the use of SERRS for the analysis of ballpoint pen inks, with advanced chemometric data analysis.

    Other authors
    See publication

  • Detection of a Foreign Protein in Milk Using Surface-Enhanced Raman Spectroscopy Coupled with Antibody-Modified Silver Dendrites

    Analytical Chemistry

    Herein we developed a rapid and simple method which used surface-enhanced Raman spectroscopy (SERS) coupled with antibody-modified silver dendrites to detect ovalbumin (OVA), the egg white protein, introduced into whole milk. OVA was first captured out of milk by use of antibody-modified silver dendrites and then directly measured on the silver dendrites by Raman spectroscopy. Results show that this method is capable of detecting OVA at 0.1 μg/mL in phosphate buffered saline (PBS) and 5 μg/mL…

    Herein we developed a rapid and simple method which used surface-enhanced Raman spectroscopy (SERS) coupled with antibody-modified silver dendrites to detect ovalbumin (OVA), the egg white protein, introduced into whole milk. OVA was first captured out of milk by use of antibody-modified silver dendrites and then directly measured on the silver dendrites by Raman spectroscopy. Results show that this method is capable of detecting OVA at 0.1 μg/mL in phosphate buffered saline (PBS) and 5 μg/mL in milk within 30 min based on the principal component analysis. This method has the potential for wide use in areas such as allergenic protein detection and bioterrorism agent detection in complex matrixes.

    Other authors
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  • Analysis of multi-layer polymer films

    materialstoday

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  • Characterization of Amorphous and Microcrystalline Silicon Using Raman Spectroscopy

    Spectroscopy

    Silicon deposited on glass or silicon carbide is widely used in manufacturing photovoltaic cells. Both the proportion and distribution of amorphous and crystalline silicon are critical for performance and are therefore important to monitor. Raman spectroscopy is an ideal technique for this application, as the two forms generate readily distinguishable spectra that lend themselves to simple quantification methods using Beer's Law. Mapping generates chemical images with detailed information on…

    Silicon deposited on glass or silicon carbide is widely used in manufacturing photovoltaic cells. Both the proportion and distribution of amorphous and crystalline silicon are critical for performance and are therefore important to monitor. Raman spectroscopy is an ideal technique for this application, as the two forms generate readily distinguishable spectra that lend themselves to simple quantification methods using Beer's Law. Mapping generates chemical images with detailed information on the spatial distribution of the crystalline and amorphous forms. Since excess excitation laser power can be demonstrated to convert amorphous into crystalline silicon, care must be taken to limit the amount of power used. The Thermo Scientific DXR Raman microscope, which is equipped with a laser power regulator, is ideal for this application, particularly if the method has to be replicated from instrument to instrument at multiple manufacturing plants.

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  • Applications of low-resolution Raman spectroscopy (LRRS)

    Internal Standardization and Calibration Architectures for Chemical Sensors, Proceedings of SPIE vol 3856

    LRRS has been shown to have the potential to make Raman spectroscopy as practical and as widely used as IR spectroscopy. The advantages LRRS brings to Raman spectrometry are its order of magnitude lower price, size, and weight from that of laboratory grade Raman spectrometers. These allow the implementation of the Raman approach with all of its advantages in a small, lightweight, portable, and affordable instrument. The disadvantages of LRRS is a small degradation in performance from that of…

    LRRS has been shown to have the potential to make Raman spectroscopy as practical and as widely used as IR spectroscopy. The advantages LRRS brings to Raman spectrometry are its order of magnitude lower price, size, and weight from that of laboratory grade Raman spectrometers. These allow the implementation of the Raman approach with all of its advantages in a small, lightweight, portable, and affordable instrument. The disadvantages of LRRS is a small degradation in performance from that of laboratory grade Raman spectrometers. It is shown in this paper that for one class of applications, measuring the concentrations of analytes in a solvent, the degradation in performance is insignificant. This class of application includes monitoring monomers and polymer concentrations during polymerization and the chemical constituents during crystallization processes.

    Other authors
    • M. Edward Womble
    • W. Ranjith Premasiri
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  • Stability and Surface Uniformity of Selected Thiol Coated SERS Surfaces

    Applied Spectroscopy

    The use of surface-enhanced Raman scattering (SERS) as an analytical technique continues to grow, but questions about its viability remain. This paper addresses the concern about the long-term stability of the surfaces used with the SERS technique. We have studied the long-term stability of Ag surfaces coated with three different thiol compounds. For this study, we have used 1-propanethiol, 1-dodecanethiol, and p -cresolthiol to coat the Ag surfaces. These surfaces showed long-term stabilities…

    The use of surface-enhanced Raman scattering (SERS) as an analytical technique continues to grow, but questions about its viability remain. This paper addresses the concern about the long-term stability of the surfaces used with the SERS technique. We have studied the long-term stability of Ag surfaces coated with three different thiol compounds. For this study, we have used 1-propanethiol, 1-dodecanethiol, and p -cresolthiol to coat the Ag surfaces. These surfaces showed long-term stabilities of over a month with minimal surface degradation. In order to mimic a realistic application of SERS, we stored the coated surfaces in a solution of water. Sodium dodecylsulfate (SDS) was added to maintain consistent surface wetting conditions so that reproducible results were obtainable on a day-to-day basis. Spatial heterogeneity of the surfaces and coating was analyzed with a fiber-optic Raman system. The spatial heterogeneity of the surfaces explains the day-to-day variations observed in the detection when the same portion of the surface used for analysis varies from day to day.

    Other authors
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  • Recent advances in Raman spectroscopic measurements of the environment

    Advanced Technologies for Environmental Monitoring and Remediation, Proceedings of SPIE Vol. 2835

    Other authors
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Courses

  • Chemical Engineering for Chemists

    -

  • Gamma Spectroscopy

    -

  • Product Management at UC Berkeley Center for Executive Management

    -

  • Sales training - with Jonathan Cooper

    -

Honors & Awards

  • President's Club 2013

    Metrohm USA

    Awarded for performance as a Product Manager for activities in 2013.

Languages

  • English

    Native or bilingual proficiency

Organizations

  • American Water Works Association (AWWA)

    -

    - Present

  • NACE

    -

    - Present

  • ASTM

    -

    - Present

  • Alpha Chi Sigma - Professional Chemistry Fraternity

    Professional Representative

    - Present

  • Society for the History of Alchemy and Chemistry (SHAC)

    -

    - Present

  • Society for Applied Spectroscopy

    -

    - Present

  • American Chemical Society (ACS)

    -

    - Present

  • AOAC

    -

    -

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