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Erik K. Hobbie




Director - Graduate Program in Materials and Nanotechnology


Professor - Department of Physics, Department of Coatings and Polymeric Materials


North Dakota State University

Fargo, ND 58108-6050


701-231-6103 (phone)

701-231-7088 (fax)

Ph.D. University of Minnesota (1990)

Research in the Hobbie group is focused on the processing and characterization of high-performance polymer nanocomposite films and materials, with specific emphasis on the "soft-hard" interface. "Hard" nanomaterials of interest include carbon (single-wall carbon nanotubes, graphene and related materials) and silicon (single-crystal silicon quantum dots, liquid silane inks and related materials). We purify these materials, characterize them, and then blend them with a variety of polymers and complex fluids for different applications in imaging, sensing, and electronics. Targeted impact areas include energy (photovoltaics and flexible electronics) and biomedical engineering (tagging, sensing and drug delivery).

Erik Hobbie received his Ph.D. and BS degrees in Physics from the University of Minnesota. He was a National Research Council Postdoctoral Fellow in polymer physics at the National Institute of Standards and Technology (NIST) in Gaithersburg Maryland from 1990 to 1992, and a senior research scientist at NIST for several years before coming to NDSU in the fall of 2009.


Our work was recently featured on the cover of JCP - "Wrinkling and folding of nanotube-polymer bilayers", Matthew R. Semler, John M. Harris and Erik K. Hobbie, Journal of Chemical Physics 141, 044901 (2014), DOI: 10.1063/1.488775.

Our work was recently featured on the cover of Langmuir - "Purifying colloidal nanoparticles through ultracentrifugation with implications for interfaces and materials", Joseph B. Miller, John M. Harris and Erik K. Hobbie, Langmuir 30, 7936-7946 (2014), DOI: 10.1021/la40467, Invited Feature Article.

Our work was recently featured on the cover of Soft Matter - “Phase separation and the coffee-ring effect in polymer-nanocrystal mixtures”, Joseph B. Miller, Austin C. P. Usselman, Rebecca J. Anthony, Uwe R. Kortshagen, Alexander J. Wagner, Alan R. Denton and Erik K. Hobbie, Soft Matter 10, 1665-1675 (2014), DOI: 10.1039/C3SM52807C. From themed collection 2014 Soft Matter Hot Papers.


Image: (clockwise from top left) Crosslinked polydimethacrylate colloids synthesized with a permanent interfacial coating of single-wall carbon nanotubes (SWCNTs) wrapped with single-stranded DNA; A self-assembled linear crystal of individual (1 micrometer long) SWCNTs imaged with near-infrared (NIR) fluorescence microscopy; An isolated SWCNT (5 micrometers long) in NIR fluorescence microscopy; Aggregated SWCNTs (pink) on the outer membrane of an MCT3T fibroblast; NIR emission spectra of a single-stranded DNA-SWCNT suspension.

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