- Adjunct Associate Professor
- Associate Professor, University of Notre Dame
- Concurrent Associate Professor, Department of Chemical and Biomolecular Engineering, University of Notre Dame
- Concurrent Assistant Professor, Department of Chemical and Biomolecular Engineering, University of Notre Dame
- Assistant Professor, University of Notre Dame
- Research Fellow, National Institute of Diabetes and Digestive and Kidney Diseases, NIH
- NRC Postdoctoral Fellow, National Institute of Standards and Technology
- Ph.D. in Analytical Chemistry, University of Illinois at Urbana-Champaign
- B.S. in Chemistry, The Ohio State University
- Cottrell Scholar Award
- NIH Pathway to Independence Award
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.
- Zeng, Z.-C., Schultz, Z.D. "A sensitive, low noise, DC to 12 MHz, large area photodiode preamplifier for photothermal heterodyne imaging" 2018 Review of Scientific Instruments, 89 (8), 083105. DOI: 10.1063/1.5036626
- Nelson, D.A., Schultz, Z.D. "Influence of Optically Rectified Electric Fields on the Plasmonic Photocatalysis of 4-Nitrothiophenol and 4-Aminothiophenol to 4,4-Dimercaptoazobenzene" 2018 Journal of Physical Chemistry C, 122 (15), pp. 8581-8588. DOI: 10.1021/acs.jpcc.8b00662
- Xiao, L., Schultz, Z.D. "Spectroscopic Imaging at the Nanoscale: Technologies and Recent Applications" 2018 Analytical Chemistry, 90 (1), pp. 440-458. DOI: 10.1021/acs.analchem.7b04151
- Nguyen, A.H., Deutsch, J.M., Xiao, L., Schultz, Z.D. "Online Liquid Chromatography-Sheath-Flow Surface Enhanced Raman Detection of Phosphorylated Carbohydrates" 2018 Analytical Chemistry, Article in Press. DOI: 10.1021/acs.analchem.8b02907
- Landaeta, E., Schultz, Z.D., Burgos, A., Schrebler, R., Isaacs, M. "Enhanced photostability of cuprous oxide by lignin films on glassy carbon electrodes in the transformation of carbon dioxide" 2018 Green Chemistry, 20 (10), pp. 2356-2364. DOI: 10.1039/c8gc00365c
- Kim, J.-Y., Zeng, Z.-C., Xiao, L., Schultz, Z.D. "Elucidating Protein/Ligand Recognition with Combined Surface Plasmon Resonance and Surface Enhanced Raman Spectroscopy" 2017 Analytical Chemistry, 89 (24), pp. 13074-13081. DOI: 10.1021/acs.analchem.7b04246