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Author: jeeseong hwang
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11. NIST s Integrated Colony Enumerator (NICE)
Matthew Lawrence Clarke, Jeeseong Hwang
Enumeration of bacterial colonies in an agar plate is simple in concept, but automated colony counting is difficult due to variations in colony color, size, shape, contrast, and density, as well as colony overlap. Furthermore, in applications where ...
12. Quantitative Characterization of Quantum Dot-labeled Lambda Phage for Escherichia coli Detection
Peter Yim, Matthew Lawrence Clarke, Michael McKinstry, Silvia Helena De Paoli Lacerda, Leonard F. Pease III, Marina A. Dobrovolskaia, Hyeong G. Kang, David Thomas Read, Shanmuga Sozhamannan, Jeeseong Hwang
We rapidly and quantitatively detect biological pathogens by combining the specificity of bacteriophage lambda with the sensitivity of CdSe/ZnS quantum dot (QD)-based fluorescence. Specifically, QD-decorated lambda phages bind to and allow detection ...
13. Water Soluble DNA-Wrapped Single-Walled Carbon Nanotube/Quantum Dot Complexes
Zhenping Zhou, Hyeong G. Kang, Jeffrey A Fagan, Alexander J. Shapiro, Matthew Lawrence Clarke, Jeeseong Hwang, Tinh Nguyen
14. Probing the dynamic fluorescence properties of single
water-soluble quantum dots
J R Krogmeier, Hyeong G. Kang, Matthew Lawrence Clarke, p Yim, Jeeseong Hwang
The influence of surface modifications, including carboxyl-, amine-, and mercaptoundecanoicacid-functionalized chemistries, on the dynamic fluorescence properties of single quantum dots (QDs) are probed using a combined confocal fluorescence microsco ...
15. Biophotonic tools in cell and tissue diagnostics
Journal of Research (NIST JRES)
Michael Brownstein, Robert A Hoffman, Richard Levenson, Thomas E Milner, Marla L Dowell, Paul A Williams, Grady S. White, Adolfas Kastytis Gaigalas, Jeeseong Hwang
In order to maintain the rapid advance of biophotonics in the U.S. and to enhance our competitiveness worldwide, key measurement tools must be in place. As a part of a wide-reaching effort to improve the U.S. technology base, the National Institute o ...
16. Nanocrystal-Based Biomimetic System for Quantitative Flow Cytometry
Marina Dobrovolskaia, Hyeong G. Kang, Matthew Lawrence Clarke, Anil Patri, Jeeseong Hwang
Flow cytometry has been instrumental in rapid analysis of single cells since the 1970s. One of the common approaches is the immunofluorescence study involving labeling of cells with antibodies conjugated to organic fluorophores. More recently, as th ...
17. Fluorescence Intermittency and Spectral Shifts of Single Bio-Conjugated Nanocrystals Studied by Single Molecule Confocal Fluorescence Microscopy and Spectroscopy
Hyeong G. Kang, Mathew Maye, Dmytro Nykypanchuk, Matthew Lawrence Clarke, Peter Yim, J R Krogmeier, Kimberly A Briggman, Oleg Gang, Jeeseong Hwang
We have fabricated a combined measurement system capable of confocal microscopy and fluorescence spectroscopy to simultaneously evaluate multiple optical characteristics of single fluorescent nanocrystals. The single particle detection sensitivity is ...
18. Hunting the Origins of Line Width Roughness with Chemical Force Microscopy
John Taylor Woodward IV, Jeeseong Hwang, V and Choi Prabhu
19. High sensitivity bacterial detection using biotin-tagged phage quantum-dot nanocomplexes
R Edgar, M Mckinstry, Jeeseong Hwang, A B Oppenheim, R A Fekete, Gary Giulian, C Merril, K Nagashima, S Adhya
20. Bacteriophage/QuantumDot nanocomplexes to detect bacteria in clinical or environmental isolates
Jeeseong Hwang, R Edgar, M Mckinstry, S Adhya, Gary Giulian, C Merril