Research interests

• Laser based diagnostics (spectral/lifetime PL imaging, time-correlated single photon counting, phase-shifting diffraction interferometer)
• Intelligent laser processing enabled by real-time processing of in-situ monitoring data
• Laser damage science

Career path

• 5 years in IT industry (Samsung, Danal)
• +9 years in the Optics and Materials S&T group, LLNL

Subject matter expertise

• laser ablation, laser oxidation, laser dewetting, laser damage, meta-surfaces, hydrophobic surfaces

Ph.D., Mechanical Engineering, University of California at Berkeley, 2014

M.Sc., Mechanical Engineering, Seoul National University, Korea, 2009

B.A., Electrical Engineering, Yonsei University, Korea, 2005

(Full list of publications)

Selected publications

Jae-Hyuck Yoo, Nathan J Ray, Hoang T Nguyen, Michael A Johnson, Eyal Feigenbaum, “Laser-Assisted Tailored Patterning of Au Nanoparticles over an Inch-Sized Area: Implications for Large Aperture Meta-optics”, ACS Applied Nano Materials (2022)

Junil Kim, Kyungmin Ko, Hyeokjin Kwon, Joonki Suh, Hyuk-Jun Kwon, Jae-Hyuck Yoo, “Channel Scaling Dependent Photoresponse of Copper-Based Flexible Photodetectors Fabricated Using Laser-Induced Oxidation”, ACS Applied Materials & Interfaces (2022)

Hyeokjin Kwon, Junil Kim, Kyungmin Ko, Manyalibo J Matthews, Joonki Suh, Hyuk-Jun Kwon, Jae-Hyuck Yoo, “Laser-induced digital oxidation for copper-based flexible photodetectors”, Applied Surface Science (2021)

Jae-Hyuck Yoo, Andrew Lange, John Chesser, Steve Falabella, and Selim Elhadj, "A survey of transparent conducting films and optoelectrical materials for high optical power applications", Physica Status Solidi (a) (2019)

Jae-Hyuck Yoo, Hoang T Nguyen, Nathan J Ray, Michael A Johnson, William A Steele, John M Chesser, Salmaan H Baxamusa, Selim Elhadj, Joseph T McKeown, Manyalibo J Matthews, and Eyal Feigenbaum, "Scalable light-printing of substrate-engraved free-form metasurfaces", ACS Applied Materials & Interfaces (2019)

Hyuk-Jun Kwon, Junyeob Yeo, Jae Eun Jang, Costas P Grigoropoulos, and Jae-Hyuck Yoo, "Single pass laser process for super-hydrophobic flexible surfaces with micro/nano hierarchical structures", Materials (2018)

Jae-Hyuck Yoo, Subrina Rafique, Andrew Lange, Hongping Zhao, and Selim Elhadj, "Lifetime laser damage performance of Ga2O3 for high power applications", APL Materials (2018)

Jae-Hyuck Yoo, Manyalibo Matthews, Phil Ramsey, Antonio Correa Barrios, Austin Carter, Andrew Lange, Jeff Bude, and Selim Elhadj, "Thermally ruggedized ITO transparent electrode films for high power optoelectronics", Optics Express (2017)

Jae-Hyuck Yoo, Marlon G Menor, John J Adams, Rajesh N Raman, Jonathan RI Lee, Tammy Y Olson, Nan Shen, Joonki Suh, Stavros G Demos, Jeff Bude, and Selim Elhadj, "Laser damage mechanisms in conductive widegap semiconductor films", Optics Express (2016)

Jae-Hyuck Yoo, Hyuk-Jun Kwon, Dongwoo Paeng, Junyeob Yeo, Selim Elhadj, and Costas P Grigoropoulos, "Facile fabrication of a superhydrophobic cage by laser direct writing for site-specific colloidal self-assembled photonic crystal", Nanotechnology (2016)

Dongwoo Paeng*, Jae-Hyuck Yoo*, Junyeob Yeo, Daeho Lee, Eunpa Kim, Seung Hwan Ko, and Costas P. Grigoropoulos, "Low-cost facile fabrication of flexible transparent copper electrode by nanosecond laser ablation", Advanced Materials *Equal contribution (2015)

Jae-Hyuck Yoo, Jung Bin In, Ioanna Sakellari, Rajesh Raman, Manyalibo Matthews, Selim Elhadj, Cheng Zheng, and Costas Grigoropoulos, "Directed dewetting of amorphous silicon film by a donut-shaped laser pulse", Nanotechnology (2015)

Jae-Hyuck Yoo, Jung Bin In, Jong Bok Park, Hojeong Jeon, and Costas P Grigoropoulos, "Graphene folds by femtosecond laser ablation", Applied Physics Letters (2012)

Patents

Jae Hyuck Yoo, Eyal Feigenbaum, Manyalibo Joseph Matthews, “Fast image acquisition system and method using pulsed light illumination and sample scanning to capture optical micrographs with sub-micron features”, U.S. Patent 11624710 (2023).

Jae Hyuck Yoo, Eyal Feigenbaum, “System and method for ablation assisted nanostructure formation for graded index surfaces for optics”, U.S. Patent 11525945 (2022).

Eyal Feigenbaum, Nathan James Ray, Jae Hyuck Yoo, “System and method for repeated metal deposition-dewetting steps to form a nano-particle etching mask producing thicker layer of engraved metasurface”, U.S. Patent 11294103 (2022)

Selim Elhadj, Jae Hyuck Yoo, “System and method for modifying material surface”, U.S. Patent 11198196 (2021)

Jianchao Ye, John Roehling, Jae Hyuck Yoo, “Systems and methods for laser processing of solid-state batteries”, U.S. Patent 16783910 (2021)

• DDST Excellence in Publication Award, LLNL, 2018
• Kwangjeong Scholarship, Kwanjeong Educational Foundation, Korea, 2010 - 2014 
• Best Award in University Hacking Contest, Kimcheon College, Korea, 2003