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Ryan Roeder

Ryan K. Roeder


Phone: 574-631-7003

Office: 148 Multidisciplinary Building


B.S., Materials Engineering - Purdue University, 1994

Ph.D. Materials Engineering - Purdue University, 1999


Dr. Roeder's research interests broadly span biomaterials, including nanoparticles for targeted contrast agents and drug delivery, and scaffolds for regenerating tissues, as well biomechanics, including the mechanobiology and micromechanics of musculoskeletal tissues.  Dr. Roeder's research has been supported by the National Science Foundation (NSF), the National Institutes of Health (NIH), the U.S. Army Medical Research and Materiel Command (USAMRMC), the Congressionally-Directed Medical Research Programs (CDMRP), as well as private foundations and corporations.  Dr. Roeder’s research group is multidisciplinary, including students with backgrounds in biomedical engineering, materials engineering, mechanical engineering, chemical engineering, and chemistry.  Ph.D. graduates have been placed in postdoctoral positions, research hospitals, biomedical industry positions, and faculty positions.

Postdoctoral Opening


Selected Recent Publications

L.E. Cole, T. Vargo-Gogola and R.K. Roeder, “Contrast-enhanced X-ray detection of microcalcifications in radiographically dense mammary tissue using targeted gold nanoparticles,” ACS Nano, in press. doi:10.1021/acsnano.5b02749  Press release.

A.P. Baumann, M.W. Aref, T.L. Turnbull, A.G. Robling, G.L. Niebur, M.R. Allen and R.K. Roeder, “Development of an In Vivo Rabbit Ulnar Loading Model,” Bone, 75, 55-61 (2015). 10.1016/j.bone.2015.01.022

R.J. Kane, H.E. Weiss-Bilka, M.J. Meagher, Y. Liu, J.A. Gargac, G.L. Niebur, D.R. Wagner and R.K. Roeder, “Hydroxyapatite reinforced collagen scaffolds with improved architecture and mechanical properties,” Acta Biomaterialia, 17, 16-25 (2015). doi:10.1016/j.actbio.2015.01.031

L.E. Cole, R.D. Ross, J.M.R. Tilley, T. Vargo-Gogola and R.K. Roeder, “Gold nanoparticles as contrast agents in X-ray imaging and computed tomography,” Nanomedicine, 10 [2] 321-341 (2015). doi:10.2217/nnm.14.171

L.E. Cole, T. Vargo-Gogola and R.K. Roeder, “Contrast-enhanced X-ray detection of breast microcalcifications in a murine model using targeted gold nanoparticles,” ACS Nano, 8 [7], 7486-7496 (2014). doi:10.1021/nn5027802

T.L. Turnbull, A.P. Baumann and R.K. Roeder, “Fatigue microcracks that initiate fracture are located near elevated intracortical porosity but not elevated mineralization,” J. Biomechanics, 47 [12] 3135-3142 (2014). doi:10.1016/j.jbiomech.2014.06.022

R.D. Ross, L.E. Cole, J.M.R. Tilley and R.K. Roeder, “Effect of Functionalized Gold Nanoparticle Size on X-Ray Attenuation and Binding Affinity to Hydroxyapatite,” Chem. Mater., 26 [2], 1187-1194 (2014). doi:10.1021/cm4035616

L.E. Cole, T. Vargo-Gogola and R.K. Roeder, “Bisphosphonate-functionalized gold nanoparticles for contrast-enhanced X-ray detection of breast microcalcifications,” Biomaterials, 35 [7] 2312-2321 (2014). doi:10.1016/j.biomaterials.2013.11.077

M.J. Meagher, B. Leone, T.L. Turnbull, R.D. Ross, Z. Zhang and R.K. Roeder, “Dextran-encapsulated barium sulfate nanoparticles prepared for aqueous dispersion as an X-ray contrast agent,” J. Nanopart. Res., 15 [12] 2146 (10 pages) (2013). doi:10.1007/s11051-013-2146-8

R.K. Roeder, “Mechanical Characterization of Biomaterials”; in Characterization of Biomaterials.  Edited by A. Bandyopadhyay and S. Bose.  Elsevier, Inc., Amsterdam, 2013.  doi:10.1016/B978-0-12-415800-9.00003-6

T.L. Conrad, D.J. Jaekel, S.M. Kurtz and R.K. Roeder, “Effects of the mold temperature on the mechanical properties and crystallinity of hydroxyapatite whisker reinforced polyetheretherketone scaffolds,” J. Biomed. Mater. Res., 101B [4] 576-583 (2013). doi:10.1002/jbm.b.32859

R.K. Roeder and T.L. Conrad, “Bioactive Polyaryletherketone Composites”; pp. 163-179 in the PEEK Biomaterials Handbook. Edited by S.M. Kurtz.  Elsevier, Inc., Amsterdam, 2012. doi:10.1016/B978-1-4377-4463-7.10011-9

Summary of Activities/Interests

Biomaterials, Nanoparticles, Targeted Delivery, Computed Tomography, Scaffolds, Bone Regeneration, Composites, Mechanical Behavior of Materials, Bone Mechanobiology and Mechanics


The Transformation of Cancer Imaging: From Shades of Gray to Living Color

September 30, 2015

Promising a transformation in biomedical imaging, a new technology called spectral [color] computed tomography is at work on the University of Notre Dame’s campus, where researchers are giving the phrase “in living color” a new meaning.

New Approach to Mammograms Could Improve Reliability

September 18, 2015

A recent article in the journal ASC Nano describes a process using targeted gold nanoparticles: "Detecting breast cancer in women with dense mammary tissues could become more reliable with a new mammogram procedure that researchers have now tested in pre-clinical studies of mice."

Notre Dame Integrated Imaging Facility Announces Awards for Best Imaging Publications

April 23, 2015

If image is important in business, it is vital in research. The more accurate the image — whether medical, structural/safety, or for security purposes, the more information it can provide to those seeking solutions. The Notre Dame Integrated Imaging Facility is pleased to announce two awards for best imaging publications for the 2014 calendar year.

Faculty Awards Honor Exemplary Work in Undergraduate Teaching and Advising

May 1, 2013

Eighteen University of Notre Dame faculty members have received Rev. Edmund P. Joyce, C.S.C., Awards for Excellence in Undergraduate Teaching and three faculty have been honored with Dockweiler Awards for Excellence in Undergraduate Advising.