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You searched on: Author: jeeseong hwang

Displaying records 41 to 50 of 63 records.
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41. Data Analysis Considerations in Probing Single Quantum Dot Fluorescence Intermittency
Published: 4/28/2005
Authors: J R Krogmeier, Jeeseong Hwang
Abstract: The fluorescence intermittency of single, bare, CdSe/ZnS quantum dots were probed using single molecule confocal microscopy and found to demonstrate power law kinetics. Various threshold values and line fitting parameters are employed in the data an ...

42. Band 3 Modifications in Plasmodium Falciparum-Infected AA and CC Erythrocytes Assayed by Autocorrelation Analysis Using Quantum Dots
Published: 3/1/2005
Authors: F Tokumasu, R M Fairhurst, G R Ostera, N J Brittain, Jeeseong Hwang, T E Wellems, J A Dvorak
Abstract: The molecular stability of hemoglobin is critical for normal erythrocyte functions, including oxygen transport. Hemoglobin C (HbC) is a mutant hemoglobin that has increased oxidative susceptibility due to an amino acid substitution ( 6: Glu to Lys). ...

43. Effects of Surface Functionality and Humidity on The Adhesion Force and Chemical Contrast Measured With AFM
Published: 1/1/2005
Authors: Tinh Nguyen, Xiaohong Gu, lijiang chen, Michael J Fasolka, Kimberly A Briggman, Jeeseong Hwang, Jonathan W. Martin
Abstract: The ability to probe chemical heterogeneity with nanometer scale resolution is essential for developing a molecular level understanding of a variety of phenomena occurring at surfaces of materials. One area that could benefit greatly from nanoscale ...

44. Near-Field Polarimetric Characterization of Polymer Crystallites
Published: 8/1/2004
Authors: Lori S. Goldner, S N Goldie, Michael J Fasolka, F Renaldo, Jeeseong Hwang, Jack F Douglas
Abstract: We use near-field polarimetry (NFP) to investigate thin film crystallites of isotactic polystyrene (iPS). NFP micrographs enabled quantitative optical characterization of the birefringence in these specimens with sub-diffraction limited resolution, ...

45. Heterogeneous Molecular Distribution in Supported Multicomponent Lipid Bilayers
Published: 2/1/2004
Authors: F Tokumasu, Jeeseong Hwang, J A Dvorak
Abstract: Membrane domains

46. Probing the Optical Properties of Single Quantum Dots
Published: 2/1/2004
Authors: J R Krogmeier, Jeeseong Hwang, Lori S. Goldner
Abstract: Semiconductor nanocrystals or quantum dots are gaining interest as fluorescent tags for biological molecules due to their large quantum yield and photostability. Quantum dots are semiconductor crystallites 2 nm 10 nm in diameter that contain approx ...

47. Mapping Chemical Heterogeneity of Polymeric Materials with Chemical Force Microscopy
Published: 1/1/2004
Authors: Tinh Nguyen, Xiaohong Gu, Michael J Fasolka, Kimberly A Briggman, Jeeseong Hwang, Alamgir Karim, Jonathan W. Martin

48. Fourier Analysis Near-Field Polarimetry for Measurement of Local Optical Properties of Thin Films
Published: 7/1/2003
Authors: Lori S. Goldner, Michael J Fasolka, S Nougier, H P Nguyen, Garnett W Bryant, Jeeseong Hwang, K D. Weston, Kathryn L Beers, A Urbas, Edwin L Thomas
Abstract: We present measurements of the local dichroism and birefringence of thin film specimens us ing techniques that combine near-field scanning optical microscopy (NSOM) and a novel polarization modulation (PM) polarimetry utilizing Fourier analysis of th ...

49. Near-Field Polarimetric Characterization of Semi-Crystalline Polymer Systems
Published: 3/1/2003
Authors: S N Goldie, Michael J Fasolka, Lori S. Goldner, Jeeseong Hwang, Kathryn L Beers
Abstract: We have studied crystallization in thin films of isotactic polystyrene (iPS) to better understand the morphology and formation of these structures through the use of polarization modulation near-field scanning optical microscopy (PM-NSOM). Polymer cr ...

50. Measuring Local Optical Properties: Near-Field Polarimetry of Photonic Block Copolymer Morphology
Published: 1/10/2003
Authors: Michael J Fasolka, Lori S. Goldner, Jeeseong Hwang, A Urbas, P DeRege, T Swager, Edwin L Thomas
Abstract: Due to their microphase separated morphology, block copolymers (BC) can exhibit photonic behavior if their domain periodicity is sufficiently large (>100 nm) [1]. Classical spectroscopic characterization of these optical properties is routine, but o ...

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