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Journal Articles

Photoluminescence dynamics and ligand exchange in PbS/CdS core/shell nanocrystal films

R. Islam, X. Wu, D. J. Lockwood, D.-K. Ko, L. Tsybeskov
Journal: Journal of Applied Physics
J. Appl. Phys. 137, 014302 (2025)
https://doi.org/10.1063/5.0243708
Published: January 2025
View article titled, Photoluminescence dynamics and ligand exchange in PbS/CdS core/shell nanocrystal films
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Journal Articles

An optimized scheme for detecting magneto-optic effects in ultrathin films with Sagnac interferometry

X. D. Zhu, E. K. Ko, G. Kimbell, J. Robinson
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 93, 093101 (2022)
https://doi.org/10.1063/5.0090061
Published: September 2022
View article titled, An optimized scheme for detecting magneto-optic effects in ultrathin films with Sagnac interferometry
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Journal Articles

Photoluminescence in PbS nanocrystal thin films: Nanocrystal density, film morphology and energy transfer

L. Tsybeskov, M. Alam, S. B. Hafiz, D.-K. Ko, A. M. Bratkovsky, X. Wu, D. J. Lockwood
Journal: Journal of Applied Physics
J. Appl. Phys. 128, 134301 (2020)
https://doi.org/10.1063/5.0022549
Published: October 2020
View article titled, Photoluminescence in PbS nanocrystal thin films: Nanocrystal density, film morphology and energy transfer
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Journal Articles

Dynamic modeling and adapted design of a low cost linear Fresnel power plant for rural areas in West Africa

Gaëlle K. Ko, Pierre Neveu, K. Edem N’Tsoukpoe, Yezouma Coulibaly
Journal: AIP Conference Proceedings
AIP Conf. Proc. 1850, 040002 (2017)
https://doi.org/10.1063/1.4984398
Published: June 2017
View article titled, Dynamic modeling and adapted design of a low cost linear Fresnel power plant for rural areas in West Africa
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Journal Articles

Alternating magnetic field heat behaviors of PVDF fibrous mats filled with iron oxide nanoparticles

Jinu Kim, Jung-Su Choi, Heejae Yang, Frank K. Ko, Ki Hyeon Kim
Journal: AIP Advances
Series: Magnetism and Magnetic Materials
AIP Advances 6, 055907 (2016)
https://doi.org/10.1063/1.4943054
Published: February 2016
View article titled, Alternating magnetic field heat behaviors of PVDF fibrous mats filled with iron oxide nanoparticles
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Journal Articles

Thermal conductivity prediction of magnetic composite sheet for near-field electromagnetic absorption

Joonsik Lee, Baekil Nam, Frank K. Ko, Ki Hyeon Kim
Journal: Journal of Applied Physics
Series: Magnetism and Magnetic Materials
J. Appl. Phys. 117, 17C122 (2015)
https://doi.org/10.1063/1.4918959
Published: April 2015
View article titled, Thermal conductivity prediction of magnetic composite sheet for near-field electromagnetic absorption
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Journal Articles

High‐Fidelity RF Gun Simulations with the Parallel 3D Finite Element Particle‐In‐Cell Code Pic3P

A. Candel, A. Kabel, L. Lee, Z. Li, C. Limborg, C. Ng, G. Schussman, K. Ko
Journal: AIP Conference Proceedings
AIP Conf. Proc. 1149, 1114–1118 (2009)
https://doi.org/10.1063/1.3215604
Published: August 2009
View article titled, High‐Fidelity RF Gun Simulations with the Parallel 3D Finite Element Particle‐In‐Cell Code Pic3P
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Journal Articles

On‐Target Contrast Diagnostic via Specular Reflectivity Measurement

A. S. Pirozhkov, I. W. Choi, J. H. Sung, S. K. Lee, T. J. Yu, T. M. Jeong, I. J. Kim, N. Hafz, C. M. Kim, K. H. Pae, Y.‐C. Noh, D.‐K. Ko, J. Lee, A. Robinson, P. Foster, S. Hawkes, M. Streeter, C. Spindloe, P. McKenna, D. C. Carroll, C.‐G. Wahlström, M. Zepf, B. Dromey, K. Markey, S. Kar, Y. T. Li, M. H. Xu, H. Nagatomo, M. Mori, A. Yogo, H. Kiriyama, K. Ogura, A. Sagisaka, S. Orimo, M. Nishiuchi, H. Sugiyama, T. Zh. Esirkepov, H. Okada, S. Kondo, S. Kanazawa, Y. Nakai, A. Akutsu, T. Motomura, M. Tanoue, T. Shimomura, M. Ikegami, I. Daito, M. Kando, T. Kameshima, P. Bolton, S. V. Bulanov, H. Daido, D. Neely
Journal: AIP Conference Proceedings
AIP Conf. Proc. 1153, 7–15 (2009)
https://doi.org/10.1063/1.3204560
Published: July 2009
View article titled, On‐Target Contrast Diagnostic via Specular Reflectivity Measurement
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Journal Articles

Diagnostic of laser contrast using target reflectivity

A. S. Pirozhkov, I. W. Choi, J. H. Sung, S. K. Lee, T. J. Yu, T. M. Jeong, I J. Kim, N. Hafz, C. M. Kim, K. H. Pae, Y.-C. Noh, D.-K. Ko, J. Lee, A. P. L. Robinson, P. Foster, S. Hawkes, M. Streeter, C. Spindloe, P. McKenna, D. C. Carroll, C.-G. Wahlström, M. Zepf, D. Adams, B. Dromey, K. Markey, S. Kar, Y. T. Li, M. H. Xu, H. Nagatomo, M. Mori, A. Yogo, H. Kiriyama, K. Ogura, A. Sagisaka, S. Orimo, M. Nishiuchi, H. Sugiyama, T. Zh. Esirkepov, H. Okada, S. Kondo, S. Kanazawa, Y. Nakai, A. Akutsu, T. Motomura, M. Tanoue, T. Shimomura, M. Ikegami, I. Daito, M. Kando, T. Kameshima, P. Bolton, S. V. Bulanov, H. Daido, D. Neely
Journal: Applied Physics Letters
Appl. Phys. Lett. 94, 241102 (2009)
https://doi.org/10.1063/1.3148330
Published: June 2009
View article titled, Diagnostic of laser contrast using target reflectivity
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Journal Articles

Ion spectrometer composed of time-of-flight and Thomson parabola spectrometers for simultaneous characterization of laser-driven ions

I. W. Choi, C. M. Kim, J. H. Sung, T. J. Yu, S. K. Lee, I. J. Kim, Y.-Y. Jin, T. M. Jeong, N. Hafz, K. H. Pae, Y.-C. Noh, D.-K. Ko, A. Yogo, A. S. Pirozhkov, K. Ogura, S. Orimo, A. Sagisaka, M. Nishiuchi, I. Daito, Y. Oishi, Y. Iwashita, S. Nakamura, K. Nemoto, A. Noda, H. Daido, J. Lee
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 80, 053302 (2009)
https://doi.org/10.1063/1.3131628
Published: May 2009
View article titled, Ion spectrometer composed of time-of-flight and Thomson parabola spectrometers for simultaneous characterization of laser-driven ions
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Journal Articles

Simultaneous forward and backward terahertz generations in periodically poled stoichiometric Li Ta O 3 crystal using femtosecond pulses

N. E. Yu, C. Kang, H. K. Yoo, C. Jung, Y. L. Lee, C.-S. Kee, D.-K. Ko, J. Lee, K. Kitamura, S. Takekawa
Journal: Applied Physics Letters
Appl. Phys. Lett. 93, 041104 (2008)
https://doi.org/10.1063/1.2960999
Published: July 2008
View article titled, Simultaneous forward and backward terahertz generations in periodically poled stoichiometric Li Ta O 3 crystal using femtosecond pulses
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Journal Articles

Development of Laser‐Driven Proton and Electron Sources Using APRI 100‐TW Ti:Sapphire Laser System

I. W. Choi, N. Hafz, T. M. Jeong, H. T. Kim, C. M. Kim, T. J. Yu, J. H. Sung, K.‐H. Hong, S. K. Lee, Y.‐C. Noh, D.‐K. Ko, J. Lee, S. Orimo, A. Yogo, A. Sagisaka, K. Ogura, M. Mori, Z. Li, J. Ma, A. S. Pirozhkov, S. V. Bulanov, M. Nishiuchi, H. Daido, Y. Oishi, K. Nemoto, S. Nakamura, Y. Iwashita, T. Shirai, A. Noda
Journal: AIP Conference Proceedings
AIP Conf. Proc. 1024, 165–172 (2008)
https://doi.org/10.1063/1.2958189
Published: June 2008
View article titled, Development of Laser‐Driven Proton and Electron Sources Using APRI 100‐TW Ti:Sapphire Laser System
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Journal Articles

Efficient production of a collimated MeV proton beam from a polyimide target driven by an intense femtosecond laser pulse

M. Nishiuchi, H. Daido, A. Yogo, S. Orimo, K. Ogura, J. Ma, A. Sagisaka, M. Mori, A. S. Pirozhkov, H. Kiriyama, S. V. Bulanov, T. Zh. Esirkepov, I. W. Choi, C. M. Kim, T. M. Jeong, T. J. Yu, J. H. Sung, S. K. Lee, N. Hafz, K. H. Pae, Y.-C. Noh, D.-K. Ko, J. Lee, Y. Oishi, K. Nemoto, H. Nagatomo, K. Nagai, H. Azuma
Journal: Physics of Plasmas
Phys. Plasmas 15, 053104 (2008)
https://doi.org/10.1063/1.2928161
Published: May 2008
View article titled, Efficient production of a collimated MeV proton beam from a polyimide target driven by an intense femtosecond laser pulse
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Journal Articles

Electric field dependent photoluminescence studies of nanoparticle sensitized photorefractive polymers

F. Aslam, D. M. Graham, D. J. Binks, P. Dawson, N. Pickett, P. O’Brien, C. C. Byeon, D.-K. Ko, J. Lee
Journal: Journal of Applied Physics
J. Appl. Phys. 103, 093702 (2008)
https://doi.org/10.1063/1.2908171
Published: May 2008
View article titled, Electric field dependent photoluminescence studies of nanoparticle sensitized photorefractive polymers
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Journal Articles

Nitride-based light emitting diodes with indium tin oxide electrode patterned by imprint lithography

S. J. Chang, C. F. Shen, W. S. Chen, C. T. Kuo, T. K. Ko, S. C. Shei, J. K. Sheu
Journal: Applied Physics Letters
Appl. Phys. Lett. 91, 013504 (2007)
https://doi.org/10.1063/1.2753726
Published: July 2007
View article titled, Nitride-based light emitting diodes with indium tin oxide electrode patterned by imprint lithography
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Journal Articles

Dependence of the electron beam parameters on the stability of laser propagation in a laser wakefield accelerator

N. M. Hafz, I. W. Choi, J. H. Sung, H. T. Kim, K.-H. Hong, T. M. Jeong, T. J. Yu, V. Kulagin, H. Suk, Y.-C. Noh, D.-K. Ko, J. Lee
Journal: Applied Physics Letters
Appl. Phys. Lett. 90, 151501 (2007)
https://doi.org/10.1063/1.2721119
Published: April 2007
View article titled, Dependence of the electron beam parameters on the stability of laser propagation in a laser wakefield accelerator
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Journal Articles

Fabrication of Cu/Co bilayer gate electrodes using selective chemical vapor deposition and soft lithographic patterning

H. J. Yang, J. Lee, S. Kim, Y. K. Ko, H. J. Shin, J. G. Lee, C. Kim, M. M. Sung, H. J. Bang, B. S. Cho, Y. H. Bae, J. H. Lee, D. H. Kim, C. O. Jeong, S. Y. Kim, S. K. Lim
Journal: Journal of Applied Physics
J. Appl. Phys. 100, 113705 (2006)
https://doi.org/10.1063/1.2396796
Published: December 2006
View article titled, Fabrication of Cu/Co bilayer gate electrodes using selective chemical vapor deposition and soft lithographic patterning
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Journal Articles

Second-harmonic generation in periodically poled lithium niobate waveguides fabricated by femtosecond laser pulses

Y. L. Lee, N. E. Yu, C. Jung, B.-A. Yu, I.-B. Sohn, S.-C. Choi, Y.-C. Noh, D.-K. Ko, W.-S. Yang, H.-M. Lee, W.-K. Kim, H.-Y. Lee
Journal: Applied Physics Letters
Appl. Phys. Lett. 89, 171103 (2006)
https://doi.org/10.1063/1.2364832
Published: October 2006
View article titled, Second-harmonic generation in periodically poled lithium niobate waveguides fabricated by femtosecond laser pulses
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Journal Articles

Thermal Diffusion of Heat Pulse in Subcooled Liquid Nitrogen

H. M. Chang, J. J. Byun, J. H. Choi, C. J. Ha, M. J. Kim, H. M. Kim, T. K. Ko
Journal: AIP Conference Proceedings
AIP Conf. Proc. 823, 488–495 (2006)
https://doi.org/10.1063/1.2202452
Published: April 2006
View article titled, Thermal Diffusion of Heat Pulse in Subcooled Liquid Nitrogen
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Journal Articles

Edge Drift of Eutectic SnPb Lines: Electromigration of Flip Chip Solder

Y.‐C. Joo, M.‐S. Yoon, M.‐K. Ko, O.‐H. Kim, B.‐N. Kim, Y.‐B. Park
Journal: AIP Conference Proceedings
AIP Conf. Proc. 817, 339–347 (2006)
https://doi.org/10.1063/1.2173567
Published: February 2006
View article titled, Edge Drift of Eutectic SnPb Lines: Electromigration of Flip Chip Solder
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