Prof. Euiwon Bae Profile

Prof. Euiwon Bae

Senior research scientist at Purdue Univ

SPIE Involvement:

Author

Publications (33)

Proceedings Article | 13 June 2023 Presentation + Paper

Presentation + Paper

Food contamination test using combined laser-induced breakdown spectroscopy (LIBS) and Raman spectroscopy

Sungho Shin, Iyll-Joon Doh, Bartek Rajwa, Euiwon Bae, J. Paul Robinson

Proceedings Volume 12545, 125450B (2023) https://doi.org/10.1117/12.2665238

KEYWORDS: Raman spectroscopy, Laser induced breakdown spectroscopy, Contamination, Surface enhanced Raman spectroscopy, Spectroscopy, Safety, Signal detection, Pulsed laser operation

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Proceedings Article | 13 June 2023 Presentation + Paper

Presentation + Paper

Smartphone-based pathogen detection using simultaneous monitoring of resonant frequency and optical fluorescence

Hyun Jung Min, Hansel Mina, Amanda Deering, Bartek Rajwa, Sungho Shin, Iyll-Joon Doh, J. Paul Robinson, Euiwon Bae

Proceedings Volume 12545, 125450A (2023) https://doi.org/10.1117/12.2665235

KEYWORDS: Antibodies, Fluorescence, Crystals, Biosensors, Quartz, Portability, Pathogens, Imaging systems, Sensors, Bacteria

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Proceedings Article | 13 June 2023 Presentation + Paper

Presentation + Paper

Detection of mycotoxin-producing fungi in cereal crops using LAMP-based assays in a microfluidic device

Cole Reynolds, Xi Wu, Chutipol Thamaratnothai, Zheming Sun, Bartek Rajwa, Euiwon Bae, Martha Vaughan, J. Paul Robinson

Proceedings Volume 12545, 1254509 (2023) https://doi.org/10.1117/12.2665232

KEYWORDS: Lamps, Fluorescence, Microfluidics, Matrices, Portability, Fungi, Contamination, Agriculture

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Proceedings Article | 8 June 2022 Presentation + Paper

Presentation + Paper

Laser-induced breakdown spectroscopy (LIBS)-based assay for point-of-care (POC) detection of cytokines in COVID-19 infection

Xi Wu, Euiwon Bae, Bartek Rajwa, J. Paul Robinson

Proceedings Volume 12123, 1212307 (2022) https://doi.org/10.1117/12.2623280

KEYWORDS: Laser induced breakdown spectroscopy, Europium, Biosensors, Lanthanides, Point-of-care devices, Metals, Nanoparticles, Gold, Diagnostic tests, Immuno-biosensors

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Proceedings Article | 1 June 2022 Presentation + Paper

Presentation + Paper

Rapid molecular point-of-detection (POD) of mycotoxins-producing fungi in agricultural products using loop-mediated isothermal amplification (LAMP) assay

Xi Wu, Cole Reynolds, Euiwon Bae, Brianna Dowden, Yoo Hyun Kim, Bartek Rajwa, J. Paul Robinson

Proceedings Volume 12120, 121200B (2022) https://doi.org/10.1117/12.2623298

KEYWORDS: Agriculture, Fungi, Safety, Biological detection systems

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Proceedings Article | 1 June 2022 Presentation + Paper

Presentation + Paper

Energy density effects on disinfection of gram-negative organisms using a portable UV disinfection unit

Sungho Shin, Brianna Dowden, Iyll-Joon Doh, Xi Wu, Bartek Rajwa, Euiwon Bae, J. Paul Robinson

Proceedings Volume 12120, 121200D (2022) https://doi.org/10.1117/12.2623328

KEYWORDS: Organisms, Ultraviolet radiation, Pathogens, Bacteria, Agriculture, Safety, Optical sensors

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Proceedings Article | 1 June 2022 Presentation + Paper

Presentation + Paper

A quartz crystal microbalance biosensor for real-time detection of Salmonella Typhimurium based on antibody immobilization

Hyun Jung Min, Hansel Cordoba, Amanda Deering, J. Paul Robinson, Euiwon Bae

Proceedings Volume 12120, 1212008 (2022) https://doi.org/10.1117/12.2623085

KEYWORDS: Quartz, Crystals, Sensors, Biosensors, Bacteria, Pathogens, Safety

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Proceedings Article | 1 June 2022 Presentation + Paper

Presentation + Paper

A smartphone-based bacterial colony phenotyping instrument based on the reflective elastic light-scatter pattern

Iyll-Joon Doh, Brianna Dowden, Valery Patsekin, Bartek Rajwa, J. Paul Robinson, Euiwon Bae

Proceedings Volume 12120, 121200A (2022) https://doi.org/10.1117/12.2623007

KEYWORDS: Reflectivity, Cameras, Opacity, Polarizers, Beam splitters, Organisms, Light scattering, Imaging systems, Image classification

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Proceedings Article | 1 June 2022 Presentation + Paper

Presentation + Paper

Food authentication studies using laser-induced breakdown spectroscopy (LIBS)

Xi Wu, Sungho Shin, Euiwon Bae, J. Paul Robinson, Bartek Rajwa

Proceedings Volume 12120, 121200C (2022) https://doi.org/10.1117/12.2622985

KEYWORDS: Machine learning, Laser induced breakdown spectroscopy, Chemometrics, Analytical research, Spectroscopy, Laser ablation, Agriculture, Classification systems

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Proceedings Article | 1 June 2022 Presentation + Paper

Presentation + Paper

Hyperspectral application in bacterial rapid detection using optical scattering technology via integration of a supercontinuum laser

Iyll-Joon Doh, Vanessa Sarria Zuniga, Robert Pruitt, Bartek Rajwa, J. Paul Robinson, Euiwon Bae

Proceedings Volume 12120, 1212005 (2022) https://doi.org/10.1117/12.2623267

KEYWORDS: Hyperspectral sensing, Supercontinuum sources, Microorganisms, Laser scattering, Feature selection, Organisms, Image classification, Scattering, Light scattering, Light sources, Laser applications, Feature extraction

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Proceedings Article | 12 April 2021 Presentation + Paper

Presentation + Paper

Towards a field deployable pathogen detection system by quartz-crystal microbalance

Hyun Jung Min, Euiwon Bae

Proceedings Volume 11754, 117540K (2021) https://doi.org/10.1117/12.2586126

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Proceedings Article | 30 April 2019 Paper

Paper

Portable bioluminescence detection for food safety: smartphone vs. silicon photomultiplier

Iyll-Joon Doh, Hyun Jung Min, Claudia Coronel-Aguilera, Trevor Lim, Bruce Applegate, Euiwon Bae

Proceedings Volume 11016, 110160E (2019) https://doi.org/10.1117/12.2521452

KEYWORDS: Bioluminescence, Sensors, Signal to noise ratio, Silicon photomultipliers, Luminescence, Signal detection, Algorithm development

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Proceedings Article | 30 April 2019 Presentation + Paper

Presentation + Paper

Multiplexed detection of lanthanides using laser-induced breakdown spectroscopy: a survey of data analysis techniques

Carmen Gondhalekar, Bartek Rajwa, Euiwon Bae, Valery Patsekin, Jennifer Sturgis, Huisung Kim, Iyll-Joon Doh, Prasoon Diwakar, J. Paul Robinson

Proceedings Volume 11016, 1101609 (2019) https://doi.org/10.1117/12.2521453

KEYWORDS: Metals, Laser induced breakdown spectroscopy, Europium, Lanthanides, Gadolinium, Multiplexing, Dysprosium, Neodymium, Signal detection, Data analysis

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Proceedings Article | 30 April 2019 Presentation + Paper

Presentation + Paper

Classification of Arcobacter species using variational autoencoders

Valery Patsekin, Stephen On, Jennifer Sturgis, Euiwon Bae, Bartek Rajwa, Aleksandr Patsekin, J. Paul Robinson

Proceedings Volume 11016, 1101608 (2019) https://doi.org/10.1117/12.2521722

KEYWORDS: Feature extraction, Image classification, Statistical analysis, Databases, Data modeling, Biological research, Organisms, Machine learning, Image processing

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Proceedings Article | 26 February 2019 Paper

Paper

Smartphone-based quantitative reader for detection of food-borne bacteria by lateral flow assay

Youngkee Jung, Yoojung Heo, Amanda Deering, Euiwon Bae

Proceedings Volume 10869, 108691A (2019) https://doi.org/10.1117/12.2507899

KEYWORDS: Cameras, Computer aided design, Bacteria, RGB color model, Imaging systems, Camera shutters, Chemical analysis, Agriculture, Matrices, 3D modeling

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Proceedings Article | 17 February 2017 Presentation + Paper

Presentation + Paper

Design of smartphone-based spectrometer to assess fresh meat color

Youngkee Jung, Hyun-Wook Kim, Yuan H. Brad Kim, Euiwon Bae

Proceedings Volume 10072, 1007213 (2017) https://doi.org/10.1117/12.2253414

KEYWORDS: Spectroscopy, Cameras, Light sources, Calibration, Collimation, Sensing systems, Integrated optics, 3D printing, Optical components, Diffraction gratings, Spectrometer engineering, Reflectivity, Standards development, CMOS sensors

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SPIE Journal Paper | 24 October 2016 Open Access

Open Access

Reflected scatterometry for noninvasive interrogation of bacterial colonies

Huisung Kim, Iyll-Joon Doh, Jennifer Sturgis, Arun Bhunia, J. Paul Robinson, Euiwon Bae

JBO, Vol. 21, Issue 10, 107004, (October 2016) https://doi.org/10.1117/12.10.1117/1.JBO.21.10.107004

KEYWORDS: Blood, Diffraction, Scatterometry, Reflection, Bacteria, Photons, Opacity, Laser scattering, Backscatter, Image classification

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Proceedings Article | 3 June 2011 Paper

Paper

A distributed national network for label-free rapid identification of emerging pathogens

J. Paul Robinson, Bartek Rajwa, M. Murat Dundar, Euiwon Bae, Valery Patsekin, E. Daniel Hirleman, Ali Roumani, Arun Bhunia, J. Eric Dietz, V. Jo Davisson, John Thomas

Proceedings Volume 8018, 80180C (2011) https://doi.org/10.1117/12.884619

KEYWORDS: Pathogens, Organisms, Electrophoretic light scattering, Databases, Genetics, Light scattering, Scattering, Microorganisms, Microbiology, Bacteria

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Proceedings Article | 16 May 2011 Paper

Paper

Digital microbiology: detection and classification of unknown bacterial pathogens using a label-free laser light scatter-sensing system

Bartek Rajwa, M. Murat Dundar, Ferit Akova, Valery Patsekin, Euiwon Bae, Yanjie Tang, J. Eric Dietz, E. Daniel Hirleman, J. Paul Robinson, Arun Bhunia

Proceedings Volume 8029, 80290C (2011) https://doi.org/10.1117/12.884541

KEYWORDS: Classification systems, Pathogens, Library classification systems, Light scattering, Machine learning, Spectroscopy, Organisms, Laser scattering, Sensors, Statistical analysis

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Proceedings Article | 12 May 2011 Paper

Paper

Characterization of optical properties of bacterial micro-colonies via the comprehensive morphology analyzer

Nan Bai, Yanji Tang, Arun Bhunia, E. Daniel Hirleman, Euiwon Bae

Proceedings Volume 8027, 80270C (2011) https://doi.org/10.1117/12.884013

KEYWORDS: Transmittance, Light scattering, Scattering, Photodiodes, Laser scattering, Confocal microscopy, Optical properties, Code division multiplexing, Signal attenuation, Sensors

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SPIE Journal Paper | 1 July 2010 Open Access

Open Access

Modeling light propagation through bacterial colonies and its correlation with forward scattering patterns

Euiwon Bae, Nan Bai, Amornrat Aroonnual, J. Paul Robinson, Arun Bhunia, E. Daniel Hirleman

JBO, Vol. 15, Issue 04, 045001, (July 2010) https://doi.org/10.1117/12.10.1117/1.3463003

KEYWORDS: Diffraction, Scattering, Light scattering, Bacteria, Wavefronts, Phase contrast, Confocal microscopy, Code division multiplexing, Laser scattering, Phase modulation

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Proceedings Article | 5 May 2009 Paper

Paper

Morphotypic analysis and classification of bacteria and bacterial colonies using laser light-scattering, pattern recognition, and machine-learning system

Bartek Rajwa, Murat Dundar, Valeri Patsekin, Karleigh Huff, Arun Bhunia, Murugesan Venkatapathi, Euiwon Bae, E. Daniel Hirleman, J. Paul Robinson

Proceedings Volume 7306, 73061A (2009) https://doi.org/10.1117/12.818589

KEYWORDS: Bacteria, Particles, Sensors, Classification systems, Light scattering, Image classification, Flow cytometry, Scatter measurement, Pathogens, Pattern recognition

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Proceedings Article | 28 April 2009 Paper

Paper

Development of a real-time system of monitoring bacterial colony growth and registering the forward-scattering pattern

Nan Bai, Euiwon Bae, Amornrat Aroonnual, Arun Bhunia, J. Paul Robinson, E. Daniel Hirleman

Proceedings Volume 7315, 73150Z (2009) https://doi.org/10.1117/12.818961

KEYWORDS: Bacteria, Scattering, Light scattering, Code division multiplexing, Scatterometry, Confocal microscopy, Convection, Safety, Microscopes, Real-time computing

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Proceedings Article | 28 April 2009 Paper

Paper

Prediction of the light scattering patterns from bacteria colonies by a time-resolved reaction-diffusion model and the scalar diffraction theory

Euiwon Bae, Nan Bai, Amornrat Aroonnual, Arun Bhunia, J. Paul Robinson, E. Daniel Hirleman

Proceedings Volume 7315, 73150A (2009) https://doi.org/10.1117/12.818855

KEYWORDS: Bacteria, Scattering, Mathematical modeling, Diffraction, Diffusion, Light scattering, Laser scattering, Modulators, Instrument modeling, Refractive index

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Proceedings Article | 22 February 2008 Paper

Paper

Phenotypic analysis of bacterial colonies using laser light scatter and pattern-recognition techniques

Bartek Rajwa, Bulent Bayraktar, Padmapriya Banada, Karleigh Huff, Euiwon Bae, E. Daniel Hirleman, Arun Bhunia, J. Paul Robinson

Proceedings Volume 6864, 68640S (2008) https://doi.org/10.1117/12.762366

KEYWORDS: Laser scattering, Bacteria, Classification systems, Detection and tracking algorithms, Light scattering, Pathogens, Image classification, Microorganisms, Matrices, Organisms

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Proceedings Article | 12 February 2008 Paper

Paper

Development and optimization of two-dimensional centering algorithm for bacterial rapid detection system using forward scattering

Euiwon Bae, Andry Lesmana, Arun Bhunia, J. Paul Robinson, E. Daniel Hirleman

Proceedings Volume 6849, 684905 (2008) https://doi.org/10.1117/12.763478

KEYWORDS: Scattering, Laser scattering, Cameras, Image segmentation, Image processing algorithms and systems, Algorithm development, Image processing, Imaging systems, Beam splitters, Detection and tracking algorithms

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SPIE Journal Paper | 1 January 2008 Open Access

Open Access

Analysis of time-resolved scattering from macroscale bacterial colonies

Euiwon Bae, Padmapriya Banada, Karleigh Huff, Arun Bhunia, J. Paul Robinson, E. Daniel Hirleman

JBO, Vol. 13, Issue 01, 014010, (January 2008) https://doi.org/10.1117/12.10.1117/1.2830655

KEYWORDS: Scattering, Laser scattering, Light scattering, Phase modulation, Microscopes, Phase contrast, Bacteria, Biological research, Modulation, Pathogens

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Proceedings Article | 26 April 2007 Paper

Paper

Noninvasive forward-scattering system for rapid detection, characterization, and identification of bacterial colonies

Bartek Rajwa, Bulent Bayraktar, Padmapriya Banada, Karleigh Huff, Euiwon Bae, E. Daniel Hirleman, Arun Bhunia, J. Paul Robinson

Proceedings Volume 6554, 65540N (2007) https://doi.org/10.1117/12.722200

KEYWORDS: Pathogens, Laser scattering, Organisms, Computing systems, Bacteria, Feature extraction, Detection and tracking algorithms, Image classification, Contamination, Solids

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Proceedings Article | 23 October 2006 Paper

Paper

Noninvasive forward-scattering system for rapid detection, characterization, and identification of Listeria colonies: image processing and data analysis

Bartek Rajwa, Bulent Bayraktar, Padmapriya Banada, Karleigh Huff, Euiwon Bae, E. Daniel Hirleman, Arun Bhunia, J. Paul Robinson

Proceedings Volume 6381, 638105 (2006) https://doi.org/10.1117/12.686298

KEYWORDS: Laser scattering, Pathogens, Image classification, Feature extraction, Data analysis, Classification systems, Image processing, Feature selection, Machine learning, Agriculture

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Proceedings Article | 23 October 2006 Paper

Paper

Biophysical modeling of time-resolved forward scattering by Listeria colonies

Euiwon Bae, Padmapriya Banada, Arun Bhunia, E. Daniel Hirleman

Proceedings Volume 6381, 638107 (2006) https://doi.org/10.1117/12.686406

KEYWORDS: Scattering, Light scattering, Laser scattering, Phase contrast, Bacteria, Phase modulation, Time metrology, Pathogens, Gaussian beams, Diffraction

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We have developed a detection system and associated protocol based on optical forward scattering where the bacterial colonies of various species and strains growing on solid nutrient surfaces produced unique scatter signatures. The aim of the present investigation was to develop a bio-physical model for the relevant phenomena. In particular, we considered time-varying macroscopic morphological properties of the growing colonies and modeled the scattering using scalar diffraction theory. For the present work we performed detailed studies with three species of Listeria; L. innocua, L. monocytogenes, and L. ivanovii. The baseline experiments involved cultures grown on brain heart infusion (BHI) agar and the scatter images were captured every six hours for an incubation period of 42 hours. The morphologies of the colonies were studied by phase contrast microscopy, including measurement of the diameter of the colony. Growth curves, represented by colony diameter as a function of time, were compared with the time-evolution of scattering signatures. Similar studies were carried out with L. monocytogenes grown on different substrates. Non-dimensionalizing incubation time in terms of the time to reach stationary phase was effective in reducing the dimensionality of the model. Bio-physical properties of the colony such as diameter, bacteria density variation, surface curvature/profile, and transmission coefficient are important parameters in predicting the features of the forward scattering signatures. These parameters are included in a baseline model that treats the colony as a concentric structure with radial variations in phase modulation. In some cases azimuthal variations and random phase inclusions were included as well. The end result is a protocol (growth media, incubation time and conditions) that produces reproducible and distinguishable scatter patterns for a variety of harmful food borne pathogens in a short period of time. Further, the bio-physical model we developed is very effective in predicting the dominant features of the scattering signatures required by the identification process and will be effective for informing further improvements in the instrumentation.

SPIE Journal Paper | 1 December 2001

Application of sensitivity analysis for the design of six-degree-of-freedom measurement system

Jong-Ahn Kim, Eui Bae, Soo Hyun Kim, Yoon Keun Kwak

OE, Vol. 40, Issue 12, (December 2001) https://doi.org/10.1117/12.10.1117/1.1418714

KEYWORDS: Sensors, Diffraction gratings, Diffraction, Error analysis, Seaborgium, Optical engineering, Motion measurement, Beam propagation method, Electric field sensors, CCD cameras

Proceedings Article | 12 February 2001 Paper

Paper

Micromotion measurement system for millistructure using diffraction grating

Eui Bae, Jong-Ahn Kim, Soo Hyun Kim, Yoon Keun Kwak

Proceedings Volume 4190, (2001) https://doi.org/10.1117/12.417235

KEYWORDS: Diffraction gratings, Sensors, Motion measurement, Kinematics, Diffraction, Signal detection, Photodiodes, Interferometers, Laser sources, Head

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Proceedings Article | 29 March 2000 Paper

Paper

Multi-degree-of-freedom displacement measurement system using a diffraction grating

Jong-Ahn Kim, Kyung-Chan Kim, Eui Bae, Soo Hyun Kim, Yoon Keun Kwak

Proceedings Volume 3945, (2000) https://doi.org/10.1117/12.380531

KEYWORDS: Diffraction gratings, Sensors, Sensing systems, Semiconductor lasers, Kinematics, Control systems, Diffraction, Magnesium, Vibrometry, Actuators

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Showing 5 of 33 publications

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