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You searched on: Author: jeeseong hwang

Displaying records 11 to 20 of 64 records.
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11. Single molecule confocal fluorescence lifetime correlation spectroscopy for accurate nanoparticle size determination
Published: 5/15/2014
Authors: Bonghwan B. Chon, Kimberly A Briggman, Jeeseong Hwang
Abstract: We report on an experimental procedure in confocal single molecule fluorescence lifetime correlation spectroscopy (FLCS) to determine the range of excitation power and molecule concentration in solution under which the application of an unmodified ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914381

12. Optical Coherence Tomography for Dimensional Metrology of Lab-on-a-chip devices
Published: 10/27/2013
Authors: Darwin R Reyes-Hernandez, Michael W Halter, Jeeseong Hwang
Abstract: Here we present a new metrology tool for the determination of the dimensions of channels from final product Lab-on-a-chip devices. Using Optical Coherence Tomography (OCT) areas of up to 12 mm x 12 mm can be imaged in less than 1 second, without the ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914314

13. Mapping the Vif-A3G interaction using peptide arrays: a basis for anti-HIV lead peptides
Published: 6/15/2013
Authors: Jeeseong Hwang, Ji Y. Lee, Abigail E. Miller, Tali Reingewertz, Elena Britan-Rosich, Shahar Rotem-Bamberger, Mathias Viard, Robert Blumenthal, Assaf Friedler
Abstract: Human apolipoprotein-B mRNA-editing catalytic polypeptide-like 3G (A3G) is a cytidine deaminase that restricts retroviruses, endogenous retro-elements and DNA viruses. A3G plays a key role in the anti- HIV-1 innate cellular immunity. The HIV-1 Vif ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912899

14. Metrology for Lab-on-a-Chip Final-Product Devices
Published: 5/12/2013
Authors: Darwin R Reyes-Hernandez, Michael W Halter, Jeeseong Hwang
Abstract: New metrology tools to measure the critical parameters of internal structures in lab on a chip devices are greatly needed in order to develop standard tests for this technology. Here we present a method that combines a custom made optical coherence ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913496

15. Calibration and validation scheme for in vivo spectroscopic imaging of tissue oxygenation
Published: 8/9/2012
Authors: Maritoni Abatayo Litorja, Robert C. Chang, Jeeseong Hwang, David W Allen
Abstract: The determination of the level of oxygenation in optically accessible tissues using multispectral or hyperspectral imaging (HSI ) of oxy- and deoxyhemoglobin has special appeal in clinical work due to its non-invasiveness, ease of use and capability ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909349

16. Developing digital tissue phantoms for hyperspectral imaging of ischemic wounds
Published: 5/18/2012
Authors: David W Allen, Jeeseong Hwang, Maritoni Abatayo Litorja, Joseph Paul Rice
Abstract: Biomedical optical imaging has the potential to achieve high spatial resolution and high functional sensitivity for non-invasive assessment of ischemic wounds. However, clinical acceptance of many optical imaging devices is hampered by poor repro ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910922

17. Algorithm Validation Using Multicolor Phantoms
Published: 5/9/2012
Authors: Daniel Victor Samarov, Matthew Lawrence Clarke, Ji Y. Lee, David W Allen, Maritoni Abatayo Litorja, Jeeseong Hwang
Abstract: We present a framework for hyperspectral image (HSI) analysis validation, specifically abundance fraction estimation based on HSI measurements of water soluble dye mixtures printed on microarray chips. In our work we focus on the performance of tw ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911285

18. Designing Microarrays Phantoms for Hyperspectral Imaging Validation
Published: 5/9/2012
Authors: Matthew Lawrence Clarke, Ji Y. Lee, Daniel Victor Samarov, David W Allen, Maritoni Abatayo Litorja, Ralph Nossal, Jeeseong Hwang
Abstract: The simple design of custom-tailored microarrays for the characterization of hyperspectral imaging systems and analysis methods for biologically relevant samples. Individual and mixtures of dyes were printed on microscope slides and imaged by a hyper ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910877

19. Fabrication and Characterization of a Multilayered Optical Tissue Model with Embedded Scattering Microspheres in Polymeric Materials
Published: 5/9/2012
Authors: Robert C. Chang, Peter M. Johnson, Christopher M Stafford, Jeeseong Hwang
Abstract: We report on a novel fabrication approach to build multilayered optical tissue phantoms that serve as independently validated test targets for axial resolution and contrast in scattering measurements by depth-resolving optical coherent tomography (OC ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910012

20. Hyperspectral Image Projector Applications
Published: 2/15/2012
Authors: Joseph Paul Rice, Steven W Brown, David W Allen, Howard W Yoon, Maritoni Abatayo Litorja, Jeeseong Hwang
Abstract: For the past several years NIST has been developing, along with several collaborators, a Hyperspectral Image Projector (HIP). This scene projector produces high-resolution programmable spectra and projects them into dynamic two-dimensional images ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910575



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