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You searched on: Author: jeeseong hwang

Displaying records 31 to 40 of 65 records.
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31. Shell-dependent Blinking of CdSe-Based Core/Shell Nanocrystals
Published: 5/10/2010
Authors: Seung Koo Shin, Bonghwan Chon, Sung Jun Lim, Wonjung Kim, Hyeong G. Kang, Taiha Joo, Jeeseong Hwang
Abstract: Blinking of zinc-blende CdSe-based core/shell nanocrystals are studied as a function of shell materials. CdSe/ZnS, CdSe/ZnSe/ZnS, and CdSe/CdS/ZnS core/shell nanocrystals are prepared by epitaxial growth of two-to-six monolayers (MLs) of shell materi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904577

32. Effects of Plasmon-Exciton Coupling on the Optical Properties of CdSe/Zns Quantum Dots Coupled to Gold Nanoparticles
Published: 1/25/2010
Authors: Shin G. Chou, Hyeong G. Kang, Matthew Lawrence Clarke, Jeeseong Hwang
Abstract: By using a multi-color, multi-modal imaging platform, we look into the effects of exciton-plasmon coupling on a semiconductor quantum dot (QD) that is coupled to a nearby gold nanoparticles (AuNP). By exciting this coupled material with laser excita ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904562

33. Low-Cost, High-Throughput, Automated Counting of Bacterial Colonies
Published: 1/5/2010
Authors: Matthew Lawrence Clarke, Robert L Burton, A. Nayo Hill, Maritoni Abatayo Litorja, Moon H. Nahm, Jeeseong Hwang
Abstract: Research involving bacterial pathogens often requires enumeration of bacteria colonies. Here we present a low-cost, high-throughput colony counting system consisting of colony counting software and a consumer-grade digital camera or document scanner ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904106

34. Probing Dynamic Fluorescence Properties of Single and Clustered Quantum Dots Towards Quantitative Biomedical Imaging of Cells
Published: 10/28/2009
Authors: Hyeong G. Kang, Fuyuki Tokumasu, Matthew Lawrence Clarke, Zhenping Zhou, Jianyong Tang, Tinh Nguyen, Jeeseong Hwang
Abstract: We present results on dynamical fluorescence properties of bioconjugated nanocrystals or quantum dots (QDs) in different chemical and physical environments. A variety of QD samples were prepared and compared: isolated individual QDs, QDs aggregated ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902907

35. Multimodal, Nanoscale, Hyperspectral Imaging Demonstrated on Heterostructures of Quantum Dots and DNA-Wrapped Single-Wall Carbon Nanotubes
Published: 10/21/2009
Authors: Hyeong G. Kang, Matthew Lawrence Clarke, Jianyong Tang, John Taylor Woodward IV, Shin G. Chou, Zhenping Zhou, Angela R Hight Walker, Tinh Nguyen, Jeeseong Hwang
Abstract: A multimodality imaging technique integrating atomic force, polarized Raman, and fluorescence lifetime microscopy and a 2D autocorrelation image analysis is applied to study the properties of a mesoscopic heterostucture of nanoscale materials. This ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902938

36. NIST s Integrated Colony Enumerator (NICE)
Published: 8/11/2009
Authors: Matthew Lawrence Clarke, Jeeseong Hwang
Abstract: 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903103

37. Quantitative Characterization of Quantum Dot-labeled Lambda Phage for Escherichia coli Detection
Published: 7/24/2009
Authors: 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
Abstract: 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=842614

38. Water Soluble DNA-Wrapped Single-Walled Carbon Nanotube/Quantum Dot Complexes
Published: 7/23/2008
Authors: Zhenping Zhou, Hyeong G. Kang, Jeffrey A Fagan, Alexander J. Shapiro, Matthew Lawrence Clarke, Jeeseong Hwang, Tinh Nguyen
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=861597

39. Probing the dynamic fluorescence properties of single water-soluble quantum dots
Published: 4/1/2008
Authors: J R Krogmeier, Hyeong G. Kang, Matthew Lawrence Clarke, p Yim, Jeeseong Hwang
Abstract: 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841011

40. Biophotonic tools in cell and tissue diagnostics
Series: Journal of Research (NIST JRES)
Published: 5/1/2007
Authors: Michael Brownstein, Robert A Hoffman, Richard Levenson, Thomas E Milner, Marla L Dowell, Paul A Williams, Grady S. White, Adolfas Kastytis Gaigalas, Jeeseong Hwang
Abstract: 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=32458



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