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Randy Norheim
Technologist

Randy Norheim is a technologist with the Environmental Molecular Sciences Laboratory (EMSL)'s Instrument Development and Automation Laboratory. He specializes in electronic hardware design, development, and fabrication. As part of a team of software and hardware engineers, he assists scientists, users, and Pacific Northwest National Laboratory and EMSL researchers to develop novel, cutting-edge instruments and systems. He also maintains a full stock of electronic parts, instruments, and equipment that can be consumed or loaned, on a walk-in basis, to all staff and users. Norheim has designed the new, compact Adaptable Multiple Power Source electronic system that is now widely used in EMSL and by partners in academia. He has also made major contributions to the new SLIM (Structured Lossless Ion Mobility) Initiative and the new 21 Tesla HRMAC system.

Education

AS in Electronics Technology, Napa Valley College

Awards and Recognition

  • R&D 100 Award as part of the Structures for Lossless Ion Manipulations Team (2017)
  • Director's Award for providing critical electronics support for the HRMAC prototype spectrometer, EMSL (2013)
  • R&D 100 Award as part of the Combined Orthogonal Mobility and Mass Evaluation Technology Team (2013)
  • Outstanding Performance Award, Liquid Chromatography Cart project, PNNL
  • Outstanding Performance Award, for the Solar Array Spectrometer projects, PNNL

 

Publications

2020

Hollerbach A.L., A. Prabhakaran Nair Syamala Amma, A. Li, G. Nagy, C.P. Harrilal, C.R. Conant, and R.V. Norheim, et al. 2020. "Ultra-High-Resolution Ion Mobility Separations Over Extended Path Lengths and Mobility Ranges Achieved using a Multilevel Structures for Lossless Ion Manipulations Module." Analytical Chemistry 92, no. 11:7972 - 7979. PNNL-SA-152421. doi:10.1021/acs.analchem.0c01397

2019

Attah I.K., G. Nagy, V. Garimella, R.V. Norheim, G.A. Anderson, Y.M. Ibrahim, and R.D. Smith. 2019. "Traveling-wave-based electrodynamic switch for concurrent dual-polarity ion manipulations in Structures for Lossless Ion Manipulations." Analytical Chemistry 91, no. 22:14712-14718. PNNL-SA-147653. doi:10.1021/acs.analchem.9b03987

Attah I.K., V. Garimella, I.K. Webb, G. Nagy, R.V. Norheim, C.E. Schimelfenig, and Y.M. Ibrahim, et al. 2019. "Dual Polarity Ion Confinement and Mobility Separations." Journal of the American Society for Mass Spectrometry 30, no. 6:967-976. PNNL-SA-132014. doi:10.1007/s13361-019-02138-1

Wojcik R., G. Nagy, I.K. Attah, I.K. Webb, V. Garimella, K.K. Weitz, and A.L. Hollerbach, et al. 2019. "SLIM Ultrahigh Resolution Ion Mobility Spectrometry Separations of Isotopologues and Isotopomers Reveal Mobility Shifts due to Mass Distribution Changes." Analytical Chemistry 91, no. 18:11952-11962. PNNL-SA-147394. doi:10.1021/acs.analchem.9b02808

2017

Deng L., I.K. Webb, V. Garimella, A.M. Hamid, X. Zheng, R.V. Norheim, and S.A. Prost, et al. 2017. "Serpentine Ultralong Path with Extended Routing (SUPER) High Resolution Traveling Wave Ion Mobility-MS using Structures for Lossless Ion Manipulations." Analytical Chemistry 89, no. 8:4628-4634. PNNL-SA-123438. doi:10.1021/acs.analchem.7b00185

Deng L., V. Garimella, A.M. Hamid, I.K. Webb, I.K. Attah, R.V. Norheim, and S.A. Prost, et al. 2017. "Compression Ratio Ion Mobility Programming (CRIMP) Accumulation and Compression of Billions of Ions for Ion Mobility-Mass Spectrometry Using Traveling Waves in Structures for Lossless Ion Manipulations (SLIM)." Analytical Chemistry 89, no. 12:6432-6439. PNNL-SA-123357. doi:10.1021/acs.analchem.7b00189

2016

Chen T., Y.M. Ibrahim, I.K. Webb, V. Garimella, X. Zhang, A.M. Hamid, and L. Deng, et al. 2016. "Mobility-Selected Ion Trapping and Enrichment Using Structures for Lossless Ion Manipulations." Analytical Chemistry 88, no. 3:1728-1733. PNNL-SA-113681. doi:10.1021/acs.analchem.5b03910

Deng L., Y.M. Ibrahim, A.M. Hamid, V. Garimella, I.K. Webb, X. Zheng, and S.A. Prost, et al. 2016. "Ultra-High Resolution Ion Mobility Separations Utilizing Traveling Waves in a 13-m Serpentine Path Length Structures for Lossless Ion Manipulations Module." Analytical Chemistry 88, no. 18:8957-8964. PNNL-SA-118270. doi:10.1021/acs.analchem.6b01915

Deng L., Y.M. Ibrahim, E.S. Baker, N.A. Aly, A.M. Hamid, X. Zhang, and X. Zheng, et al. 2016. "Ion Mobility Separations of Isomers based upon Long Path Length Structures for Lossless Ion Manipulations Combined with Mass Spectrometry." ChemistrySelect 1, no. 10:2396-2399. PNNL-SA-116187. doi:10.1002/slct.201600460

Deng L., Y.M. Ibrahim, V. Garimella, I.K. Webb, A.M. Hamid, R.V. Norheim, and S.A. Prost, et al. 2016. "Greatly Increasing Trapped Ion Populations for Mobility Separations Using Traveling Waves in Structures for Lossless Ion Manipulations." Analytical Chemistry 88, no. 20:10143-10150. PNNL-SA-119618. doi:10.1021/acs.analchem.6b02678

Garimella V., A.M. Hamid, L. Deng, Y.M. Ibrahim, I.K. Webb, E.M. Baker, and S.A. Prost, et al. 2016. "Squeezing of Ion Populations and Peaks in Traveling Wave Ion Mobility Separations and Structures for Lossless Ion Manipulations using Compression Ratio Ion Mobility Programming." Analytical Chemistry 88, no. 23:11877-11885. PNNL-SA-121131. doi:10.1021/acs.analchem.6b03660

Hamid A.M., V. Garimella, Y.M. Ibrahim, L. Deng, X. Zheng, I.K. Webb, and G.A. Anderson, et al. 2016. "Achieving high resolution ion mobility separations using traveling waves in compact multi-turn Structures for Lossless Ion Manipulations modules." Analytical Chemistry 88, no. 18:8949-8956. PNNL-SA-118269. doi:10.1021/acs.analchem.6b01914

Ibrahim Y.M., V. Garimella, S.A. Prost, R. Wojcik, R.V. Norheim, E.M. Baker, and I. Rusyn, et al. 2016. "Development of an Ion Mobility Spectrometry-Orbitrap Mass Spectrometer Platform." Analytical Chemistry 88, no. 24:12152-12160. PNNL-SA-123568. doi:10.1021/acs.analchem.6b03027

Webb I.K., V. Garimella, R.V. Norheim, E.S. Baker, Y.M. Ibrahim, and R.D. Smith. 2016. "A Structures for Lossless Ion Manipulations (SLIM) Module for Collision Induced Dissociation." Journal of the American Society for Mass Spectrometry 27, no. 7:1285-1288. PNNL-SA-115654. doi:10.1007/s13361-016-1397-x

2015

Chen T., I.K. Webb, S.A. Prost, M.B. Harrer, R.V. Norheim, K. Tang, and Y.M. Ibrahim, et al. 2015. "Rectangular Ion Funnel: A New Ion Funnel Interface for Structures for Lossless Ion Manipulations." Analytical Chemistry 87, no. 1:716-722. PNNL-SA-105304. doi:10.1021/ac503564c

Chen Y., F.E. Leach, N.K. Kaiser, X. Dang, Y.M. Ibrahim, R.V. Norheim, and G.A. Anderson, et al. 2015. "Improved ion optics for introduction of ions into a 9.4-T Fourier transform ion cyclotron resonance mass spectrometer." Journal of Mass Spectrometry 50, no. 1:280-284. PNNL-SA-104452. doi:10.1002/jms.3523

Gunaratne K.D., V. Prabhakaran, Y.M. Ibrahim, R.V. Norheim, G.E. Johnson, and J. Laskin. 2015. "Design and Performance of a High-Flux Electrospray Ionization Source for Ion Soft-Landing." Analyst 140, no. 9:2957-2963. PNNL-SA-108077. doi:10.1039/C5AN00220F

Hamid A.M., Y.M. Ibrahim, V. Garimella, I.K. Webb, L. Deng, T. Chen, and G.A. Anderson, et al. 2015. "Characterization of Traveling Wave Ion Mobility Separations in Structures for Lossless Ion Manipulations." Analytical Chemistry 87, no. 22:11301-11308. PNNL-SA-111147. doi:10.1021/acs.analchem.5b02481

Ibrahim Y.M., E.S. Baker, W.F. Danielson, R.V. Norheim, D.C. Prior, G.A. Anderson, and M.E. Belov, et al. 2015. "Development of a New Ion Mobility (Quadrupole) Time-of-Flight Mass Spectrometer." International Journal of Mass Spectrometry 377. PNNL-SA-102133. doi:10.1016/j.ijms.2014.07.034

Lin T., G.A. Anderson, R.V. Norheim, S.A. Prost, B.L. Lamarche, F.E. Leach, and K.J. Auberry, et al. 2015. "An Adaptable Multiple Power Source for Mass Spectrometry and other Scientific Instruments." Review of Scientific Instruments 86, no. 9:Article No. 094102. PNNL-SA-110063. doi:10.1063/1.4930967

Zhang X., V. Garimella, S.A. Prost, I.K. Webb, T. Chen, K. Tang, and A.V. Tolmachev, et al. 2015. "Ion Trapping, Storage, and Ejection in Structures for Lossless Ion Manipulations." Analytical Chemistry 87, no. 12:6010-6016. PNNL-SA-107651. doi:10.1021/acs.analchem.5b00214

Zhang X., Y.M. Ibrahim, T. Chen, J.E. Kyle, R.V. Norheim, M.E. Monroe, and R.D. Smith, et al. 2015. "Enhancing Biological Analyses with Three Dimensional Field Asymmetric Ion Mobility, Low Field Drift Time Ion Mobility and Mass Spectrometry (µFAIMS/IMS-MS) Separations." Analyst 140. PNNL-SA-110080. doi:10.1039/c5an00897b

2014

Leach F.E., R.V. Norheim, G.A. Anderson, and L. Pasa-Tolic. 2014. "Application of Printed Circuit Board Technology to FT-ICR MS Analyzer Cell Construction and Prototyping." Journal of the American Society for Mass Spectrometry 25, no. 12:2069-2072. PNNL-SA-107383. doi:10.1007/s13361-014-0952-6

Webb I.K., V. Garimella, A.V. Tolmachev, T. Chen, X. Zhang, J.T. Cox, and R.V. Norheim, et al. 2014. "Mobility-Resolved Ion Selection in Uniform Drift Field Ion Mobility Spectrometry/Mass Spectrometry; Dynamic Switching in Structures for Lossless Ion Manipulations." Analytical Chemistry 86, no. 19:9632-9637. PNNL-SA-103347. doi:10.1021/ac502139e

Webb I.K., V. Garimella, A.V. Tolmachev, T. Chen, X. Zhang, R.V. Norheim, and S.A. Prost, et al. 2014. "Experimental Evaluation and Optimization of Structures for Lossless Ion Manipulations for Ion Mobility Spectrometry with Time-of-Flight Mass Spectrometry." Analytical Chemistry 86, no. 18:9169-9176. PNNL-SA-103224. doi:10.1021/ac502055e

2013

Shvartsburg A.A., T.A. Seim, W.F. Danielson, R.V. Norheim, R.J. Moore, G.A. Anderson, and R.D. Smith. 2013. "High-Definition Differential Ion Mobility Spectrometry with Resolving Power up to 500." Journal of the American Society for Mass Spectrometry 24, no. 1:109-114. PNNL-SA-88665. doi:10.1007/s13361-012-0517-5