J
Jeong-Ho Han
Researcher at Boston College
Publications - 9
Citations - 813
Jeong-Ho Han is an academic researcher from Boston College. The author has contributed to research in topics: Fractal dimension & Particle. The author has an hindex of 7, co-authored 9 publications receiving 738 citations.
Papers
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Journal ArticleDOI
An Inter-Comparison of Instruments Measuring Black Carbon Content of Soot Particles
Jay G. Slowik,Eben S. Cross,Jeong-Ho Han,Paul Davidovits,Timothy B. Onasch,John T. Jayne,Leah R. Williams,Manjula R. Canagaratna,Douglas R. Worsnop,Rajan K. Chakrabarty,Hans Moosmüller,W. P. Arnott,Joshua P. Schwarz,Ru-Shan Gao,David W. Fahey,Gregory L. Kok,Andreas Petzold +16 more
TL;DR: In this paper, an inter-comparison study of fractal soot particles was conducted using the following four instruments: AMS-SMPS, SP2, MAAP and PAS.
Journal ArticleDOI
A Novel Method for Estimating Light-Scattering Properties of Soot Aerosols Using a Modified Single-Particle Soot Photometer
Ru-Shan Gao,Joshua P. Schwarz,K. K. Kelly,David W. Fahey,L. A. Watts,Thomas L. Thompson,J. R. Spackman,Jay G. Slowik,Eben S. Cross,Jeong-Ho Han,Paul Davidovits,Timothy B. Onasch,D. R. Worsnop +12 more
TL;DR: In this article, a method for determining the scattering properties of elemental carbon (EC) particles using a single particle soot photometer (SP2) was proposed. But the method is limited to the case when the SP2 is in the TEM00 mode.
Journal ArticleDOI
Light scattering and absorption by fractal-like carbonaceous chain aggregates: comparison of theories and experiment.
Rajan K. Chakrabarty,Hans Moosmüller,W. Patrick Arnott,Mark A. Garro,Jay G. Slowik,Eben S. Cross,Jeong-Ho Han,Paul Davidovits,Timothy B. Onasch,Douglas R. Worsnop +9 more
TL;DR: The results show that the RDG approximation agrees within 10% with the experimental results and the exact electromagnetic calculations of the IEFS theory, and volume-equivalent Mie theory overpredicts the experimental scattering coefficient by a factor of approximately 3.2.
Journal ArticleDOI
Measurements of Morphology Changes of Fractal Soot Particles using Coating and Denuding Experiments: Implications for Optical Absorption and Atmospheric Lifetime
Jay G. Slowik,Eben S. Cross,Jeong-Ho Han,Jennifer Kolucki,Paul Davidovits,Leah R. Williams,Timothy B. Onasch,John T. Jayne,Charles E. Kolb,Douglas R. Worsnop +9 more
TL;DR: In this article, a set of fractal and non-fractal soot particles (mobility diameters d m = 135 to 310 nm) were produced at three controlled fuel equivalence ratios (φ = 2.1, 3.5, and 4.5) by an ethylene/oxygen flame.
Journal ArticleDOI
Low fractal dimension cluster-dilute soot aggregates from a premixed flame.
Rajan K. Chakrabarty,Rajan K. Chakrabarty,Hans Moosmüller,W. Patrick Arnott,W. Patrick Arnott,Mark A. Garro,Mark A. Garro,Guoxun Tian,Guoxun Tian,Jay G. Slowik,Eben S. Cross,Jeong-Ho Han,Paul Davidovits,Timothy B. Onasch,Douglas R. Worsnop +14 more
TL;DR: Using a novel morphology segregation technique, minority populations of submicron-sized, cluster-dilute fractal-like aggregates, formed in the soot-formation window of a premixed flame, are observed to have mass fractal dimensions between 1.2 and 1.8.