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Author: jeeseong hwang
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1. Inward cholesterol gradient of the membrane system installed by malaria parasites in normal and sickle erythrocytes
Published: 5/29/2014
Authors: Fuyuki Tokumasu, Georgeta Crivat, Hans Ackerman, Jeeseong Hwang, Thomas E. Wellems
Abstract: Plasmodium falciparum (Pf) infection remodels the human erythrocyte with new membrane systems, including a modified host erythrocyte membrane (EM), a parasitophorous vacuole membrane (PVM), a tubulovesicular network (TVN), and Maurer's clefts (MC ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913652

2. Single molecule confocal fluorescence lifetime correlation spectroscopy for accurate nanoparticle size determination
Published: 5/15/2014
Authors: Bonghwan 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

3. 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

4. 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

5. Fabrication and Characterization of a Multilayered Optical Tissue Model with Embedded Scattering Microspheres in Polymeric Materials
Published: 5/9/2012
Authors: Robert C. (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

6. 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

7. Tetracysteine-Based Fluorescent Tags to Study Protein Localization and Trafficking in Plasmodium falciparum-Infected Erythrocytes
Published: 8/10/2011
Authors: Georgeta Crivat, Fuyuki Tokumasu, Juliana Martha Sa , Thomas E. Wellems, Jeeseong Hwang
Abstract: Plasmodium falciparum (Pf) malaria parasites remodel host erythrocytes by placing membranous structures in the host cell cytoplasm and inserting proteins into the surrounding erythrocyte membranes. Dynamic imaging techniques with high spatial and tem ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907708

8. Shell and ligand-dependent blinking of CdSe-based core/shell nanocrystals
Published: 7/7/2010
Authors: Bonghwan Chon, Sung Jun Lim, Wonjung Kim, Hyeong Gon Kang, Taiha Joo, Jeeseong Hwang, Seung Koo Shin
Abstract: Blinking of zinc blende CdSe-based core/shell nanocrystals is studied as a function of shell materials and surface ligands. CdSe/ZnS, CdSe/ZnSe/ZnS and CdSe/CdS/ZnS core/shell nanocrystals are prepared by colloidal synthesis and six monolayers of lar ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903812

9. Monitoring Photothermally Excited Nanoparticles via Multimodal Microscopy
Published: 5/19/2010
Authors: Matthew Lawrence Clarke, Shin G. Chou, Jeeseong Hwang
Abstract: Generation of heat using optically excited nanoparticles can be beneficial or detrimental depending on the application. Therefore, clinically applicable studies are being pursued in an effort to achieve safe practices of nanoparticle-induced hyperth ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905276

10. 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 Gon 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



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