Zachary Schultz

Zachary Schultz

Nanoscale Spectroscopic Imaging

Biography

2015-present
Associate Professor, University of Notre Dame
2015-present
Concurrent Associate Professor, Department of Chemical and Biomolecular Engineering, University of Notre Dame
2010-2015
Concurrent Assistant Professor, Department of Chemical and Biomolecular Engineering, University of Notre Dame
2009-2015
Assistant Professor, University of Notre Dame
2007-2009
Research Fellow, National Institute of Diabetes and Digestive and Kidney Diseases, NIH
2005-2007
NRC Postdoctoral Fellow, National Institute of Standards and Technology
2005
Ph.D. in Analytical Chemistry, University of Illinois at Urbana-Champaign
2000
B.S. in Chemistry, The Ohio State University

Selected Awards

2013
Cottrell Scholar Award
2008
NIH Pathway to Independence Award

Research Interests

In the Schultz Lab, we believe the new scientific breakthroughs will be enabled by state of the art chemical measurement. Our research focuses on developing new tools for identifying molecules relevant to biomedical diagnostics and other applications. To do this, we build and develop instrumentation that takes advantage of chemical properties to characterize complex samples. The interaction between lasers and molecules provides unique information for detecting and identifying the components in complex systems. Understanding the basic science involved in chemical detection and manipulating these interactions has led to breakthrough technologies with tremendous potential. We are actively pursuing problems in metabolomics, protein receptor signaling, and active plasmonics.

Metabolomics. The ability to specifically identity and quantify the 40,000+ metabolites in the human body is essential for a systems biology approach to health care. Changes in biochemical pathways can be distinguished provided enough intermediate molecules can be monitored accurately. Current technologies can identify about 20% of the metabolites in biological samples. Our lab invented and is developing sheath-flow surface enhanced Raman scattering, which uses the unique pattern of scattered light associated with the structure of molecules, to improve molecular identification. We combine Raman detection with capillary electrophoresis, liquid chromatograpy, and other techniques. This methodology is orthogonal to existing technologies and should extend coverage of number of detectable metabolites. 

Protein Receptor Signaling. Proteins on the surface and embedded with cellular membranes are key to communicating environmental signals to the machinery within cells and are thus often drug targets. The ability to study the interaction of small molecules with receptors is a significant scientific challenge. By combining nanomaterials and state of the art spectroscopy and microscopy techniques, such as atomic force microscopy and tip-enhanced Raman scattering (TERS), we are able to monitor chemical signals associated with molecules interacting with specific proteins in intact cells. Understanding how molecules interact with signaling proteins offers promise to improve drug targeting as well as further investigate the role of membrane proteins in disease.

Active Plasmonics. Underlying all the problems we investigate is the basic science relevant to the signal enhancements incorporated into our measurements. We are interested in understanding how nanomaterials interact with light, particularly with respect to how these properties alter the response from nearby molecules. This basic science serves as the basis for the development of future measurement techniques.

 

Recent Papers

  • Xiao, L.; Wang, H.; Schultz, Z.D. "Selective Detection of RGD-Integrin Binding in Cancer Cells Using Tip Enhanced Raman Scattering Microscopy." Anal. Chem. 2016, 88(12), 6547-6553.
  • Bailey, K.A.; Schultz, Z.D. "Tracking Bulk and Interfacial Diffusion Using Multiplex Coherent Anti-Stokes Raman Scattering Correlation Spectroscopy." J. Phys. Chem. B 2016, 120(27), 6819-6828.
  • Riordan, C.M.; Jacobs, K.T.; Negri, P.; Schultz, Z.D. "High Throughput Chemical Profiling in Urine by SERS." Faraday Discuss. 2016, 187, 473-484.
  • Nguyen, A.; Schultz, Z.D. "Quantitative online sheath-flow surface enhanced Raman spectroscopy detection for liquid chromatography." Analyst 2016, 141(12), 3630-3635.
  • Kwasnieski, D.T.; Wang, H.; Schultz, Z.D. "Alkyl-Nitrile Adlayers as Probes of Plasmonically Induced Electric Fields." Chem. Sci. 2015, 6(8), 4484-4494. 
  • Jacobs, K.T.; Schultz, Z.D. "Increased SERS Detection Efficiency for Characterizing Rare Events in Flow." Anal. Chem. 2015, 87(16), 8090-8095.

Contact Information

Primary Research Areas

Research Specialties