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Joy Dunkers

Physical Scientist

 Advanced Microscopy of Complex Microbial Communities

Bacteria respond immediately to perturbations in their environment so it is important that the measurement approach is minimally disruptive.  This project develops non-invasive, optical imaging methods and associated data analysis tools to address shortcomings in the quality, quantity or specificity of information acquired from current methods to help answer the following critical questions:  Who are they?  How many are here? What are they doing? This work supports the Microbiome Community Measurements focus area.

I am currently working with Charles Camp, an expert in non-linear optical imaging, to develop broadband coherent anti-Stokes Raman (BCARS) microscopy into a tool for label-free identification and quantification of individual bacteria in complex communities.

Research Opportunities

NIST-NRC Postdoctoral Research Associateship Program: 2-year fellowship at NIST, US citizens only, $69,500 salary plus benefits, relocation expenses included, application deadlines are Feb. 1 and Aug. 1

Current opportunity available in Hyperspectral Raman Imaging of Complex Microbial Systems
Contact: joy.dunkers [at] nist.gov (Joy Dunkers) or charles.camp [at] nist.gov (Charles Camp)

Awards and Funding

2011 - 2013: Co-champion of Innovations in Measurement Science Award for Shape Metrology Proposal

2007: Department of Commerce Gold Medal for Distinguished Achievement in Federal Service for Creating and Implementing Rigorous Testing Protocols and Benchmarks Needed to Ensure the Security and Integrity of the New US ePassport

2006 – 2008: Secured Phase I ($75k) and Phase II ($270k) of a Small Business Innovative Research award to develop a high speed dual channel imaging microscope for deep imaging of cells, tissue and tissue engineered constructs using optical coherence microscopy and two photon fluorescence.

Professional Organizations

American Society for Microbiology, Society for Applied Spectroscopy
 

Publications

Structural Insights into DNA-Stabilized Silver Clusters

Author(s)
Danielle Schultz, Robert G. Brinson, Fahriye N. Sari, Jeffrey A. Fagan, Christina Bergonzo, Nancy J. Lin, Joy P. Dunkers
The structure and dynamics of Ag complexes derived from single stranded DNA (ssDNA) is less understood than their double stranded (dsDNA) counterparts despite

The Testing Program at NIST on Fibers Used in Soft Body Armor Applications

Author(s)
Walter G. McDonough, Amanda L. Forster, Jae Hyun Kim, Nathanael A. Heckert, Joy P. Dunkers, Scott A. Wight, Gale A. Holmes
The goal of this paper and presentation is to give an update of the research effort to date being conducted at the National Institute of Standards and
Created July 30, 2019