Prof. Wounjhang Park Profile

Prof. Wounjhang Park

Professor at Univ of Colorado Boulder

SPIE Involvement:

Conference Chair | Editor | Author

Websites:

Company Website

Publications (22)

Proceedings Article | 3 March 2022 Presentation

FRET-based pH-sensing with upconverting nanoparticles

Conrad Corbella Bagot, Eric Rappeport, Ananda Das, Wounjhang Park

Proceedings Volume PC11976, PC1197605 (2022) https://doi.org/10.1117/12.2609148

KEYWORDS: Sensors, Nanoparticles, Fluorescence resonance energy transfer, Signal processing, Time resolved spectroscopy, Spectroscopy, Resonance energy transfer, Reliability, Photodetectors, Luminescence

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Proceedings Article | 21 August 2020 Presentation

Plasmon enhanced upconversion in water-dispersible nanostructures

Kyuyoung Bae, Ananda Das, Wounjhang Park

Proceedings Volume 11467, 1146714 (2020) https://doi.org/10.1117/12.2568802

KEYWORDS: Upconversion, Nanostructures, Plasmons, Cancer, Plasmonics, Biomedical optics, Transparency, Tissues, Nanoparticles, Nanolithography

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Proceedings Article | 21 August 2020 Presentation

utilizing upconverting nanoparticles as optical pH sensors

Eric Rappeport, Conrad Corbella Bagot, Ananda Das, Taleb Ba Tis, Wounjhang Park

Proceedings Volume 11467, 1146710 (2020) https://doi.org/10.1117/12.2568952

KEYWORDS: Nanoparticles, Sensors, Luminescence, Absorption, Resonance energy transfer, Fluorescence resonance energy transfer, Absorbance, Precision calibration, Calibration, Biological detection systems

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Proceedings Article | 21 August 2020 Presentation

A spectroscopic study on the interaction between upconversion nanoparticles and plasmonic nanostructure

Kyuyoung Bae, Ananda Das, Bo Xu, Wounjhang Park

Proceedings Volume 11467, 114671A (2020) https://doi.org/10.1117/12.2568821

KEYWORDS: Plasmonics, Nanostructures, Upconversion, Spectroscopy, Nanoparticles, Luminescence, Gold, Quantum efficiency, Dielectrics, Numerical simulations

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Proceedings Article | 25 February 2020 Presentation + Paper

Enhancement of third-order nonlinearity of thermally evaporated GeSbSe waveguides through annealing

Michael Grayson, Mo Zohrabi, Kyuyoung Bae, Jiangang Zhu, Juliet Gopinath, Wounjhang Park

Proceedings Volume 11283, 1128319 (2020) https://doi.org/10.1117/12.2542555

KEYWORDS: Waveguides, Annealing, Crystals, Thin films, Glasses, Chalcogenides, Nonlinear crystals, Germanium, Dispersion, Raman spectroscopy

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Proceedings Article | 15 March 2018 Presentation

Multifunctional nanocluster composed of gold nanorod and upconversion nanoparticle for simultaneous imaging and treatment (Conference Presentation)

Suehyun Cho, Lih-Jen Su, Thomas Flaig, Wounjhang Park

Proceedings Volume 10509, 1050909 (2018) https://doi.org/10.1117/12.2290371

KEYWORDS: Upconversion, Bladder cancer, Gold, Nanorods, Nanoparticles, Surface plasmons, Photons, Receptors, Luminescence, Confocal microscopy

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Proceedings Article | 19 April 2017 Presentation

Design and fabrication of high-Q chalcogenide glass micro-disk resonators (Conference Presentation)

Gumin Kang, Suehyun Cho, Molly Krogstad, Juliet Gopinath, Won Park

Proceedings Volume 10106, 1010609 (2017) https://doi.org/10.1117/12.2252509

KEYWORDS: Photoresist materials, Optical components, Resonators, Photonics, Infrared radiation, Chalcogenide glass, Edge roughness, Silica, Infrared materials, Optical lithography

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Proceedings Article | 3 November 2016 Presentation

Gold nanorods coupled with upconverting nanophosphors for targeted thermal ablation and imaging of bladder cancer cells (Conference Presentation)

Suehyun Cho, Lih-Jen Su, Thomas Flaig, Wounjhang Park

Proceedings Volume 9930, 99300H (2016) https://doi.org/10.1117/12.2238365

KEYWORDS: Bladder cancer, Luminescence, Near infrared, Gold, Upconversion, Photons, Confocal microscopy, Nanoparticles, Energy transfer, Nanorods

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Proceedings Article | 3 November 2016 Presentation

Plasmon enhanced upconversion for applications in solar energy harvesting (Conference Presentation)

Wounjhang Park

Proceedings Volume 9927, 99270B (2016) https://doi.org/10.1117/12.2237323

KEYWORDS: Upconversion, Plasmons, Photovoltaics, Absorption, Solar energy, Resonance enhancement, Energy transfer, Spectroscopy, Nanoparticles, Nanolithography

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Proceedings Article | 5 October 2015 Presentation

Surface plasmon enhanced infrared absorption in P3HT-based organic solar cells: the effect of infrared sensitizer (Presentation Recording)

Sungmo Ahn, Alexandre Nardes, Devin Rourke, Jao van de Lagemaat, Nikos Kopidakis, Wounjhang Park

Proceedings Volume 9562, 95620D (2015) https://doi.org/10.1117/12.2188710

KEYWORDS: Absorption, Surface plasmons, Infrared radiation, Organic photovoltaics, Solar cells, Electrodes, Polymers, Heterojunctions, Resonance enhancement, Renewable energy

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Proceedings Article | 23 August 2011 Paper

Nanometric polymer coatings for silicon on insulator circuits

David Espinoza, Xi Chen, Moustafa Mohamed, Hongyu Zhou, Eric Dudley, Won Park, Dejan Filipović, Alan Mickelson

Proceedings Volume 8173, 81730H (2011) https://doi.org/10.1117/12.898181

KEYWORDS: Polymers, Antennas, Waveguides, Scanning electron microscopy, Silicon, Photonic crystals, Silica, Nanophotonics, Polymer multimode waveguides, Optical coatings

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Proceedings Article | 11 September 2010 Paper

Dielectric optical invisibility cloaks

J. Blair, V. Tamma, W. Park, C. Summers

Proceedings Volume 7756, 775608 (2010) https://doi.org/10.1117/12.861629

KEYWORDS: Dielectrics, Near field optics, Computer aided design, Reflectivity, Silicon, Refractive index, Near field scanning optical microscopy, Device simulation, Nanorods, Titanium dioxide

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Proceedings Article | 11 September 2010 Paper

Mechanically tunable photonic crystal lens

Y. Cui, V. Tamma, J.-B. Lee, W. Park

Proceedings Volume 7756, 77561A (2010) https://doi.org/10.1117/12.860627

KEYWORDS: Photonic crystals, Actuators, Nickel, Silicon, Waveguides, Near field scanning optical microscopy, Refractive index, Finite-difference time-domain method, Near field optics, Infrared cameras

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Proceedings Article | 2 September 2008 Paper

Three-dimensional metal dielectric photonic crystal based on self-assembled gold nanoshells

Jin Hyoung Lee, Wounjhang Park

Proceedings Volume 7039, 703905 (2008) https://doi.org/10.1117/12.795041

KEYWORDS: Gold, Silica, Coating, Photonic crystals, Scanning electron microscopy, Particles, Reflection, Metals, Molecular self-assembly, Optical properties

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Proceedings Article | 13 September 2005 Paper

Focusing in the second band of a flexible membrane photonic crystal

E. Schonbrun, W. Park, M. Tinker, J.-B. Lee

Proceedings Volume 5926, 59260P (2005) https://doi.org/10.1117/12.617708

KEYWORDS: Photonic crystals, Waveguides, Silicon, Polarization, Light scattering, Refraction, Polymer thin films, Crystals, Chromium, Light

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Proceedings Article | 18 August 2005 Paper

Photo-response of integrated photonic crystal-photodiode micro-electro-optic filters

Ying Wang, Jin Hyoung Lee, Tomoko Borsa, Park Wounjhang, Bart Van Zeghbroeck

Proceedings Volume 5931, 59310K (2005) https://doi.org/10.1117/12.615317

KEYWORDS: Photonic crystals, Photodiodes, Optical spheres, Semiconducting wafers, Optical filters, Diodes, Silicon, Silica, Sensors, Reactive ion etching

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Proceedings Article | 7 July 2005 Paper

Negative refraction based on the superprism effect in a micromachined flexible photonic crystal

M. Tinker, J. B. Lee, E. Schonbrun, W. Park

Proceedings Volume 5840, (2005) https://doi.org/10.1117/12.608736

KEYWORDS: Silicon, Photonic crystals, Etching, Photonic crystal devices, Negative refraction, Polymers, Waveguides, Oxides, Refraction, Chromium

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Proceedings Article | 14 October 2004 Paper

Tunable photonic crystal structures

Christopher Summers, Curtis Neff, Brent Wagner, Wounjhang Park

Proceedings Volume 5511, (2004) https://doi.org/10.1117/12.561474

KEYWORDS: Superlattices, Refraction, Dispersion, Electro optics, Refractive index, Modulation, Photonic crystals, Waveguides, Liquid crystals, Nonlinear optics

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Proceedings Article | 14 October 2004 Paper

Tunable nanophotonic device based on flexible photonic crystal

Wounjhang Park, Ethan Schonbrun, Mark Tinker, Jeong-Bong Lee

Proceedings Volume 5511, (2004) https://doi.org/10.1117/12.559599

KEYWORDS: Silicon, Photonic crystals, Refraction, Dispersion, Waveguides, Polymers, Actuators, Etching, Nanophotonics, Chromium

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Proceedings Article | 1 September 1995 Paper

Photoluminescence properties of ZnGa2O4:Mn phosphor powders

Tuyen Tran, W. Park, Jens Tomm, Brent Wagner, Stuart Jacobsen, Christopher Summers, P. Yocom, S. McClelland

Proceedings Volume 2554, (1995) https://doi.org/10.1117/12.218195

KEYWORDS: Ions, Zinc, Luminescence, Crystals, Manganese, Field emission displays, Electrons, Phonons, Bismuth, Gallium

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Proceedings Article | 24 April 1995 Paper

Metalorganic molecular beam epitaxy of ZnS for flat-panel displays

Wusheng Tong, X. Shen, Brent Wagner, Tuyen Tran, Bill Ogle, W. Park, T. Yang, Christopher Summers

Proceedings Volume 2408, (1995) https://doi.org/10.1117/12.207512

KEYWORDS: Zinc, Sulfur, Crystals, Gallium arsenide, Excitons, Silicon, Temperature metrology, Luminescence, Thin films, Molecular beam epitaxy

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Proceedings Article | 8 September 1993 Paper

Active control of rotor noise

J. Prasad, L. Sankar, W. Park, J. Corban

Proceedings Volume 1917, (1993) https://doi.org/10.1117/12.152764

KEYWORDS: Intelligence systems, Smart structures, Smart materials, Control systems, Acoustics, Turbulence, Numerical analysis, Aerospace engineering, Electromechanical design, Actuators

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