Publications

2025

• Pengfei Lin, Kuan Lu, and ChaBum Lee, A Novel Method for Through-Silicon Via Characterization based on Diffraction Fringe Analysis, Ultramicroscopy, 272 114136 (2025)

• Chanui Lee, Hyeonho Cho, Jihye Choi, ChaBum Lee, Sangmin Lee, Dong Kyu Kim, and Sunghan Kim, Multifunctional and flexible graphene oxide/silk sericin/carbon nanotube thin films on polymide for real-time humidity sensing, European Polymer Journal, 225, 113731 (2025). https://doi.org/10.1016/j.eurpolymj.2025.113731 

• Kuan Lu, Byunggi Kim, Masahiro Nomura, Jiyong Park, and ChaBum Lee, Silicon-via (Si-via) Hole Metrology and Inspection by Grayfield Edge Diffractometry,  Journal of Manufacturing Processes, 133, pp. 503-509 (2025). https://doi.org/10.1016/j.jmapro.2024.11.086

2024

• Hyeonho Cho, ChaBum Lee, Sangmin Lee, Sunghan Kim, Effect of applied electrical potential and humidity on friction of Graphene-Based thin films, Applied Surface Science 672, 160802 (2024).

• Kuan Lu, Pengfei Lin, and ChaBum Lee, A Digital Approach to Via Edge Roughness Characterization and Quantification, International Journal of Precision Engineering and Manufacturing-Smart Technology, 2(2), pp. 93-99 (2024) 

• Changheon Han, Heebum Chun, Jiho Lee, Fengfeng Zhou, Huitaek Yun, ChaBum Lee, Martin B.G. Jun, Hybrid Semiconductor Wafer Inspection Framework via Autonomous Data Annotation, Journal of Manufacturing Science and Engineering, 146, 107906 (2024)

• Kuan Lu and ChaBum Lee, Hole Edge Metrology and Inspection by Edge Diffractometry, Journal of Manufacturing Science and Engineering, Vol 146, 070905 (2024).

• Phuc Nguyen and ChaBum Lee, Freeform Surface Profiling by Iterative Learning-Extremum Seeking Control, The International Journal of Advanced Manufacturing Technology, 132, pp. 5633-5646 (2024)

• Kuan Lu, Zhikun Wang, Heebum Chun, and ChaBum Lee, Wafer Edge Metrology and Inspection Technique Using Curved-Edge Diffractive Fringe Pattern Analysis, ASME Journal of Manufacturing Science and Engineering, 146(7), 070908 (2024)

• Zhikun Wang, Pengfei Lin, Phuc Nguyen, Jingyan Wang, and ChaBum Lee, Characterization of Photomask Patterns and Lithography-printed Patterns, Precision Engineering, 88, pp. 235-240 (2024)  https://doi.org/10.1016/j.precisioneng.2024.02.006 

• Jungsub Kim, Heebum Chun, and ChaBum Lee, Non-destructive Surface Profiling and Inspection by using a Single Unit Magneto-Eddy Current Sensor, ASME. J. Manuf. Sci. Eng. V. 146, 064501, doi: https://doi.org/10.1115/1.4053810 

• Kuan Lu and ChaBum Lee, Brighfield and Grayfield Via Metrology and Inspection by Edge Diffractometry, MSEC 2024, June 17-21, 2024, Knoxville, TN

• Hyun Jae Lee, Gugyeong Sung, Heebum Chun, and ChaBum Lee, Particle Inspection by Single Camera-based 3D Stereoscopy, MSEC 2024, June 17-21, 2024, Knoxville, TN

2023

• Hyunjae Lee, Jungsub Kim, Xiangyu Guo, and ChaBum Lee, Non-destructive inspection system for self-piercing riveting in CFRP-metal joining product using stereoscopic method with robotic manipulator, International Journal of Precision Engineering and Manufacturing, 24, pp. 1625-1631 (2023), https://doi.org/10.1007/s12541-023-00888-3 

• Heebum Chun, Jingyan Wang, Jungsub Kim, and ChaBum Lee, Wafer Particle Inspection Technique Using Computer Vision based on Color Space Transform Model, International Journal of Advanced Manufacturing Technology (2023) https://doi.org/10.1007/s00170-023-11888-y 

• Han, C., H. Chun, C. Lee, and M.B.G. Jun, Stroboscopic Data-Driven Integrated, and Intelligent Machine Learning-Based Algorithms for Semiconductor Wafer Inspection, ASME Manufacturing Science and Engineering Conference, June 12-16, New Brunswick, NJ, USA, 2023.

• Zhikun Wang, Kuan Lu, and ChaBum Lee, A Fringe Pattern Analysis Technique for Photomask Line-Edge-Roughness Characterization, Proceedings of the ASME 2023 18th International Manufacturing Science and Engineering Conference, June 12~16, New Brunswick, NJ, USA. 

• William Park, Heebum Chun, Phuc Nguyen, and ChaBum Lee, A Differentially Amplified Hall Effect Displacement Sensor for Positioning Control of a Long-Range Flexure Stage, Review of Scientific Instruments, Rev Sci Instrum 94, 075003 (2023). 

• Yinhe Wang, Xiangyu Guo, Jungsub Kim, Pengfei Lin, Kuan Lu, Hyunjae Lee, and ChaBum Lee, A Single Camera Unit-based Three-Dimensional Surface Imaging Technique, International Journal of Advanced Manufacturing Technology (2023) https://doi.org/10.1007/s00170-023-11866-4 

• Jungsub Kim, Heebum Chun, Phuc Nguyen, Bruce Li-Jung Tai, and ChaBum Lee, Geometric part error and material property profile separation technique of the additively manufactured and post-processed rods, Review of Scientific Instruments, 94, 035109 (2023).

• Jungsub Kim, Songhyun Joo, Jungsoo Nam, Mathew Kuttolamadom, and ChaBum Lee, Non-destructive surface and subsurface characterization of the machined parts by using fiber optic eddy current sensor, Journal of Manufacturing Processes, 95, 492-496 (2023)

• Jay Raval, Aamar Kazi, Otto Randolph, Xiangyu Guo, Ryan Zvanut, ChaBum Lee, and Bruce Tail, Machinability comparison of additively manufactured and traditionally wrought Ti-6Al-4V alloys using single-point cutting, Journal of Manufacturing Process 94, 534-549 (2023).

• Cho, Hyeonho; Lee, Chanui; Lee, ChaBum; Lee, Sangmin; Kim, Sunghan, Robust, ultrathin, and highly sensitive reduced graphene oxide/silk fibroin wearable sensors responded to temperature and humidity for physiological detection, Biomachromolecules  https://doi.org/10.1021/acs.biomac.3c00106 (2023).

• Kuan Lu, Zhikun Wang, Heebum Chun, and ChaBum Lee, Curved-edge diffraction fringe pattern analysis for wafer edge metrology and inspection,  SPIE Advanced Lithography + Patterning, San Jose, CA, USA February 25-29, 2023.

2022

• Jungsub Kim, Heebum Chun, Bruce Tai, and ChaBum Lee, Metallurgical property profiling of machined surface layer for microstructural prediction in subtractive and additive manufacturing, Annual Meeting of the American Society for Precision Engineering, October 11-14, 2022.

• Soobum Lee, ChaBum Lee, Jose Bosio, Mary Anne Sampaio de Melo, Smart Flexible 3D sensor for monitoring orthodontics forces: Prototype

Design and Proof of Principle experiment, Bioengineering, 9, 570 (2022)

• Heebum Chun, William Park, Jungsub Kim, and ChaBum Lee, In-Process Cutting Temperature Monitoring Method Based on Impedance Model of Dielectric Coating Layer at Tool-Chip Interface, J. Manuf. Mater. Process. 2022, 6, 97. https://doi.org/10.3390/ jmmp6050097 .

• ChaBum Lee, Xiangyu Guo, Heebum Chun and Jungsub Kim, On-machine, in-process strobo-stereoscopy for spatially resolved 3D surface profiling of rotating part, International Conference of Precision Engineering and Sustainable Manufacturing, July 20-22, 2022, Jeju, Korea.

• Xiangyu Guo and ChaBum Lee, Enhanced three-dimensional surface profiling technique based on a feature-selective segmentation and merging, Proceeding of the ASME 2022 17th International Manufacturing Science and Engineering Conference (MSEC), June 27-July 1, 2022, West Lafayette, Indiana, USA 

• Jungsub Kim, Heebum Chun, and ChaBum Lee, CFRP milling and drilling process monitoring by using a spindle-integrated three axis force sensor, Proceeding of the ASME 2022 17th International Manufacturing Science and Engineering Conference (MSEC), June 27-July 1, 2022, West Lafayette, Indiana, USA 

• Heebum Chun, Jungsub Kim, Jungsoo Nam, Songhyun Ju, and ChaBum Lee, In-process machining process monitoring method based on impedance model of dielectric coating layer, Proceeding of the ASME 2022 17th International Manufacturing Science and Engineering Conference (MSEC), June 27-July 1, 2022, West Lafayette, Indiana, USA

• Z. Wang and C. Lee, Review of KEI method-based dimensional measurement, positioning control and part inspection, Proceeding of the ASME 2022 17th International Manufacturing Science and Engineering Conference (MSEC), June 27-July 1, 2022, West Lafayette, Indiana, USA 

• Zhikun Wang, Pengfei Lin, and ChaBum Lee, Preliminary Study of Photomask Pattern Inspection by Beam-Shaped Knife-Edge Interferometry, Precision Engineering, 77, 104-109 (2022).

• Jungsub Kim, Heebum Chun, and ChaBum Lee, Three-axis Displacement Sensor-Integrated Spindle System for Carbon Fiber-reinforced Plastic (CFRP) Machining Process Monitoring, 77, 361-368 (2022). 

• Junaid Dar, Dinuka Ravimal, ChaBum Lee, and Sun-Kyu Lee, Field Surface Roughness Levelling of the Lapping Metal Surface using Specular White Light, The International Journal of Advanced Manufacturing Technology, 119, 2895-2909 (2022).

• ChaBum Lee  and Xiangyu Guo, Spatially Resolved Stereoscopic Surface Profiling by using a Feature-Selective Segmentation and Merging Technique, Surface Topography: Metrology and Properties, 10, 014002 (2022). 

• Xiangyu Guo and ChaBum Lee, Fluorescence Strobo-Stereoscopy for Specular Reflection-Suppressed Full Field of View Imaging, Measurement, 192, 11090 (2022).

• Jay K. Raval, Aamer A. Kazi, Xiangyu Guo, Ryan Zvanut, ChaBum Lee, and Bruce L. Tai, Preliminary Study on Machining Additively Manufactured Ti-6Al-4V, Journal of Manufacturing (2022). https://doi.org/10.1007/s11837-021-05041-x 

• Jungsub Kim, Himanshu Hegde, Hyo-Young Kim, and ChaBum Lee, Spindle Vibration Mitigation Utilizing Additively Manufactured Auxetic Materials, Journal of Manufacturing Processes, Vol. 73, pp. 633-641 (2022).

2021

• Zhikun Wang, Heebum Chun and ChaBum Lee, Enhancement of knife-edge interferometry for edge topography characterization, Review of Scientific Instruments, Vol. 92, 125101 (2021).

• William Park, Joshua Bernabe, Heebum Chun, and ChaBum Lee, Fabrication of diffraction gratings using a flexure-guided diamond scribing tool, American Medical Student Association (AMSA), November 5, Texas A&M University.

• Jungsub Kim, Himanshu Hedge, Hyo-Young Kim, and ChaBum Lee, Characteristics of Additively Manufactured Auxetic Materials for Spindle Vibration Mitigation, American Society for Precision Engineering, Minneapolis, MN, November 2021.

• Zhikun Wang and ChaBum Lee, Qualitative Edge Topology Inspection and Interpretation by Enhanced Knife-Edge Interferometry, American Society for Precision Engineering, Minneapolis, MN, November 2021.

• Xiangyu Guo, Jungsub Kim, and ChaBum Lee, Preliminary Study on Fluorescence Strobo-Stereoscopy for 3D Surface Imaging, American Society for Precision Engineering, Minneapolis, MN, November 2021.

• Heebum Chun, Jungsub Kim, and ChaBum Lee, In-process cutting temperature monitoring method based on impedance model of dielectric coating layer at tool-chip interface, American Society for Precision Engineering, Minneapolis, MN, November 2021.

• Heebum Chun, Jungsub Kim, ChaBum Lee, and Hyo-Young Kim, A monolithic linear motion platform driven by a piezoelectric and fluidic pressure-fed mechanism, Review of Scientific Instruments, Vol. 92, 105002 (2021); doi: 10.1063/5.0056955 

• Jay Raval, Aamer Kazi, Xiangyu Guo, ChaBum Lee, and Bruce Tai, Investigation of machinability of additively manufactured metal alloys, 2021 Annual International Solid Freeform Fabrication Symposium (Virtual Conference).

• Heebum Chun, Jungsub Kim, Hyo-Young Kim, and ChaBum Lee, Damping characteristics of fluidic pressure-fed mechanism for positioning applications, ASME Journal of Dynamic Systems, Measurement and Control, Vol. 143, No. 11, 111001 (2021).

• Jungsub Kim, Seungjoo Lee, Heebum Chun, and ChaBum Lee, Compact curved-edge displacement sensor-embedded spindle system for machining process monitoring, Journal of Manufacturing Processes, Vol. 64, pp. 1255-1260 (2021).  

• Xiangyu Guo and  ChaBum Lee,  Preliminary study of phase-shifting strobo-stereoscopy for cutting tool monitoring, Journal of Manufacturing Processes, Vol. 64, pp. 1214-1222 (2021). 

• Zhiken Wang and ChaBum Lee, Knife-edge interferogram analysis for corrosive wear propagation at sharp edges, Applied Optics, Vol. 60, Iss. 5, pp. 1373-1379 (2021).

• Xiangyu Guo and  ChaBum Lee, Cosine error-free metrology tool path planning for thickness profile measurements,  ASME Journal of Manufacturing Science and Engineering, Vol. 143, 041006 (2021).

2020

• Xiangyu Guo and ChaBum Lee, Phase-shifting 3D imaging of milling/drilling tools, American Society for Precision Engineering (Virtual Conference), October 2020.

• Seungjoo Lee, Jungsub Kim, Gregory Vogl, and ChaBum Lee, Curved-edge displacement sensor for spindle dynamic identification, American Society for Precision Engineering (Virtual Conference), October 2020.

• Heebum Chun, Jungsub Kim, Hyo-Young Kim, and ChaBum Lee, Damping characteristics of fluidic pressure-fed mechanism in dynamic systems and control, American Society for Precision Engineering (Virtual Conference), October 2020.

• Heebum Chun, Xiangyu Guo, Jungsub Kim, and ChaBum Lee, A review: additive manufacturing of flexure mechanism for nanopositioning system,  The International Journal of Advanced Manufacturing Technology, Vol. 110, pp. 681-703 (2020) https://doi.org/10.1007/s00170-020-05886-7. 

• Heebum Chun, Gyu Ha Kim, Herminso Villarraga-Gomez, Hyo-Young Kim, Alaa Elwany and ChaBum Lee, Characterization of thermally stable compliant structures with internal fluidic channels, Precision Engineering, Vol. 66, pp. 201-208 (2020).

• Heebum Chun, Hyo-Young Kim, and ChaBum Lee, Thermally stable precision motion and positioning mechanism, American Society for Precision Engineering, Boston MA, USA, May 2020.

• ChaBum Lee,  and Zhikun Wang, Photomask inspection and metrology, American Society for Precision Engineering, Topical Meeting at Austin TX, Jan 16~17, 2020. 

• Heebum Chun, Jaemin Han, Lesley Wright, Alaa Elwany, Herminso Villarraga-Gomez, and ChaBum Lee, Pressure-fed mechanism to compensate for motions and dynamic characteristics of compliant nanopositioning stages, Precision Engineering, 63, pp. 33-40 (2020).

• Xiangyu Guo, Jaemin Han, and ChaBum Lee, Cosine error elimination method for 1-dimensional convex and concave surface profile measurements, ASME, Journal of Manufacturing Science and Engineering, 142(4): 041001 (2020).

2019

• ChaBum Lee,  and Joshua A. Tarbutton, Polyvinylidene Fluoride (PVDF) Direct Printing for Sensors and Actuators, The International Journal of Advanced Manufacturing Technology, 103, 3155-3162 (2019): DOI: 10.1007/s00170-019-04275-z (2019).

• Jaemin Han, and ChaBum Lee, Dynamic and thermal characterization of additively manufactured pressure-fed flexures with internal fluidic channels, Smart Materials and Structures, 28, 105032 (2019).

• Jaemin Han, Gyu Ha Kim, and ChaBum Lee, Pressure-fed mechanisms for nanopositioning stage application, American Society for Precision Engineering, Pittsburgh PA, USA, Oct 26~Nov. 1 (2019).

• Xiangyu Guo, Jaemin Han, and ChaBum Lee, Measurement uncertainty estimation of cosine error-free surface profile measuring system, American Society for Precision Engineering, Pittsburgh PA, USA, Oct 26~Nov. 1 (2019).

• Jaemin Han and ChaBum Lee, Sensor and Instrumentation applied to spindle health monitoring, American Society for Precision Engineering, Pittsburgh PA, USA, Oct 26~Nov. 1 (2019).

• Carter Mitchell, Jaemin Han, Xiangyu Guo, and ChaBum Lee, Self-calibration algorithm for training a displacement sensor based on an artificial neural network model, Texas A& University, (Project: REU Site in Cybermanufacturing) presented on Aug 1, 2019.

• Jaemin Han, Michael Ortiz, Ubaldo Lopez, and ChaBum Lee, Cutting tool wear monitoring sensor, available from https://www.youtube.com/watch?time_continue=5&v=OvWO21iNnPA 

• ChaBum Lee, A first review of optical edge-diffraction technology for precision dimensional metrology, The International Journal of Advanced Manufacturing Technology, 102(5), pp. 2465-2480 (2019)

• ChaBum Lee, Gyu-Ha Kim, and Seongkyul Jeon, An optical measurement technique for dynamic stiffness and damping of precision spindle system, Measurement, 131, pp. 61-68 (2019).

2018

• ChaBum Lee, and Gyu-Ha Kim, A curved surface-insensitive optical sensing technique for precision spindle health monitoring, American Society for Precision Engineering, Las Vegas, NV, USA, Nov. 4~Nov. 9 (2018).

• ChaBum Lee, Joshua A. Tarbutton, and Tony L. Schmitz, An investigation of cosine error for scanning probe measurements of freeform surfaces, American Society for Precision Engineering, Las Vegas, NV, USA, Nov. 4~Nov. 9 (2018).

• ChaBum Lee, Precision cutting tool wear monitoring method by knife-edge diffraction interferometry, MSEC, 2018 June 18-22, College Station, TX, USA.

• ChaBum Lee, On-machine dimensional measurement technology for prognostics and health monitoring for precision manufacturing systems and processes, NIST Industry Forum, 2018 May 7-10.

• Soomin Choi and ChaBum Lee, Low-cost and high speed surface roughness measurement by using a capacitance sensor, Posters at the Capitol 2018 (won TN Governor's award, Feb 20, 2018).

• Seongkyul Jeon, Abolfazl Zolfaghari, ChaBum Lee, Dicing wheel wear monitoring technique utilizing edge diffraction effect, Measurement, 121, pp. 139-143 (2018).

• Herminso Villarraga Gomez, ChaBum Lee, and Stuart T. Smith, Dimensional metrology with X-ray CT: a comparison with CMM measurements on internal features and compliant structures, Precision Engineering, 51, pp. 291-307 (2018).

2017

• ChaBum Lee, Rui Zhao, Seongkyul Jeon, and Abolfazl Zolfaghari, Attrition/Abrasive wear monitoring of cutting tools based on knife-edge interferometry, American Society for Precision Engineering, Charlotte NC, USA, Oct. 29~Nov.3 (2017).

• Abolfazl Zolfaghari, Seongkyul Jeon, ChaBum Lee and Gyu-Ha Kim, Development of an innovative sensor for measuring two degree-of-freedom motions of single-axis linear nanopositioning stage, American Society for Precision Engineering, Charlotte NC, USA, Oct. 29~Nov. 3 (2017).

• Seongkyul Jeon, Christopher K. Stepanick, Abolfazl A. Zolfaghari, ChaBum Lee, Knife-edge interferometry for cutting tool wear monitoring, Precision Engineering, Vol. 50, pp. 354-360 (2017).

• Abolfazl Zolfaghari, Seongkyul Jeon, Christopher K. Stepanick, and ChaBum Lee, A novel sensor for two degree-of-freedom motion measurement of linear nanopositioning stage using knife edge displacement sensing technique, Review of Scientific Instruments , Vol. 88, Iss. 6, 065110 (2017); dol: 10.1063/1.4989517.

• ChaBum Lee, Seongkyul Jeon, Christopher K. Stepanick, Abolfazl Zolfaghari, and Joshua A. Tarbutton, Investigation of optical knife edge sensor for low cost, large-range and dual-axis nanopositioning stages, Measurement, Vol. 103, pp. 157-164 (2017) 10.1016/j.measurement.2017.02.030.

• ChaBum Lee, Rui Zhao, and Seongkyul Jeon, A simple optical system for miniature spindle runout monitoring, Measurement, Vol. 102, pp. 42-46 (2017) 10.1016/j.measurement.2017.01.056.

• ChaBum Lee, Large-range nano-scanning devices based on optical sensing technology, Book Chapter, Advanced Mechatronics and MEMS Devices II, Springer: 10.1007/978-3-319-32180-6_22 (2017).

2016

• Max B Kirkpatrick, Joshua A Tarbutton, Tue Le, and ChaBum Lee, "Characterization of 3D printed piezoelectric sensors," IEEE Sensors Conference 2016.

• Soomin Choi and ChaBum Lee, "Novel surface roughness measurement technique tool using capacitance effect," 16th Annual Early Career Conference, Birmingham AL, USA, Nov. 5~6, 2016

• Seongkyul Jeon and ChaBum Lee, "On-machine cutting tool wear monitoring technique based on edge diffraction theory," 16th Annual Early Career Conference, Birmingham AL, USA, Nov. 5~6, 2016.

• ChaBum Lee, "Edge diffraction-utilized precision displacement sensor," Korean Society for Precision Engineering Annual Meeting, Jeju, South Korea, 2016.

• ChaBum Lee, Satish M Mahajan, Rui Zhao, Seongkyul Jeon, "A curved edge diffraction-utilized displacement sensor for spindle metrology, Review of Scientific Instruments, Vol. 87, 075113, 2016. 

• ChaBum Lee, Christopher K. Stepanick, Sun-Kyu Lee, and Joshua A. Tarbutton, “Cross-coupling effect of large range XY nanopositioning stage fabricated by stereolithography process," Precision Engineering, Vol. 46, pp. 81-87, 2016.

2015

• ChaBum Lee, Hwan-Sik Yoon, Kwun-Lon Ting, Joshua A. Tarbutton, Jonathan D. Ellis, and Sun-Kyu Lee, “On-machine measurement of cutting tool damage based on optical knife-edge diffraction,” 15th Annual Early Career Conference, Birmingham AL, USA, Nov. 7~8, 2015. 

• ChaBum Lee, Sun-Kyu Lee and Joshua A Tarbutton, “Novel displacement sensing technique utilizing knife edge diffraction,” ASPE Annual Meeting, Austin TX, USA, Nov. 1~6, 2015. 

• C Lu, J. A. Tabutton, C. Lee, J. D. Ellis, and T. L. Schmitz, "Improvement of a periodic error compensation algorithm based on the continuous wavelet transform," ASPE Annual Meeting, Austin TX, USA, Nov. 1~6, 2015.

• ChaBum Lee, Sun-Kyu Lee and Joshua A Tarbutton, “Positioning control effectiveness of optical knife edge displacement sensor-embedded monolithic precision stage,” Sens. Actuators A. Vol. 233, pp. 390-396, 2015. 

• ChaBum Lee and Joshua A Tarbutton, “Compliance and control characteristics of an additive manufactured-flexure stage,” Rev. Sci. Instrum. 86(4) 045107 (2015).

• ChaBum Lee and Joshua A Tarbutton, "Electric Poling-Assisted Additive Manufacturing Process for Lead-Free Piezoelectric Device Fabrication," Procedia Manufacturing, Vol. 1. No. 2015, pp. 320-326, (2015)

• ChaBum Lee, Sun-Kyu Lee, and Joshua A Tarbutton, "Long-term Positioning Effectiveness of Additive Manufactured-Monolithic Double Compound Notch Type Flexure Stage," ASPE 2015 Spring Topical Meeting, Raleigh, NC, USA, April 26-29, 2015.

• ChaBum Lee, Rajib Mahamud, Tanvir Farouk, and Joshua A. Tarbutton, "Preliminary study of corona-assisted additive manufacturing process of piezoelectric thermopolymer," ASPE 2015 Spring Topical Meeting, Raleigh, NC, USA, April 26-29, 2015.

• Villarraga-Gomez, H., Smith. S. T., Lee, C.-B., Corbett, T., Tarbutton, J. “Assessing additive manufacturing processes with X-Ray CT Metrology,” ASPE 2015 Spring Topical Meeting, Raleigh NC, USA, April 26-29, 2015.

• Villarraga-Gomez, H., Smith. S. T., Lee, C.-B., Tarbutton, J., Charney, S. P., “Dimensional metrology of complex inner geometries built by additive manufacturing,” ASPE 2015 Spring Topical Meeting, Raleigh NC, USA, April 26-29, 2015.

2014

• ChaBum Lee and Joshua A. Tarbutton, “Electric poling-assisted additive manufacturing process for PVDF polymer-based piezoelectric device applications,” Smart Mater. Struct., Vol. 23, 095044, 2014 (Featured*)

• ChaBum Lee, Sun-Kyu Lee and Joshua A. Tarbutton, “Novel design and sensitivity analysis of displacement measurement system utilizing knife edge diffraction for nanopositioning stages,” Rev. Sci. Instrum. Vol. 85, 095113, 2014.

• ChaBum Lee, “Design and fabrication of diffractive light-condensing micro optical device with 1D and 2D lamellar grating structures,” Intl. J. Manuf. Eng., Vol. 2014, 101823, 2014.

• ChaBum Lee, “Total internal reflection-based high efficiency grating design for a metal-free polarizing filter applications using hybrid optimization procedure,” Adv. Opt. Technol., Vol. 2014, 292010, 2014.

2013

• Yoon-Ki Park, Jae-Young Joo, ChaBum Lee and Sun-Kyu Lee, “Design and fabrication of a light emitting diode-based diffuser sheet-free light guide plate,” Int. J. Prec. Eng. Manuf., 14(6), pp.1017-1022, 2013.

• ChaBum Lee and Sun-Kyu Lee, “Multi-degree-of-freedom motion error measurement in an ultraprecision machine using laser encoder–Review,” J. Mech. Sci. Technol., 27(1), pp. 141-152, 2013

2012

• ChaBum Lee, Gyu-Ha Kim and Sun-Kyu Lee, "Uncertainty investigation of grating interferometry in six degree-of-freedom motion measurement," Int. J. Prec. Eng. Manuf., 13(9), pp. 1509-1515, 2012.

• ChaBum Lee, Gyu-Ha Kim and Sun-Kyu Lee, “Angle sensor-implemented grating interferometry for a six-degree-of-freedom dynamic motion measurement in an ultraprecision machine,” J. Kor. Soc. Precis. Eng., Vol. 29, No. 8, pp. 906-912, 2012.

2011

• ChaBum Lee, Gyu-Ha Kim and Sun-Kyu Lee, "Design and construction of a single unit multi-function optical encoder for a six-degree-of-freedom error measurement in an ultraprecision linear stage," Meas. Sci. Technol., Vol. 22, 105901, 2011.

• Jin-Ho Kang, ChaBum Lee, Jae-Young Joo and Sun-Kyu Lee, “Phase-locked loop based on machine surface topography measurement using lensed fibers,” Appl. Opt., Vol. 50, pp. 460-467, 2011.

2010

• ChaBum Lee, Sun-Kyu Lee, "Fabrication and molding testing of the blazed gratings for microoptics applications," Key Eng. Mater., Vol. 447-448, pp. 396-400, 2010. 

• ChaBum Lee, T. Kuriyagawa and Sun-Kyu Lee, "Optimizing the fabrication process of a high-efficiency blazed grating through diamond scribing and molding," J. Micromech. Mircroeng., 20(5), 055228, 2010.  

2008

• ChaBum Lee, Kazuhiro Hane, WanSoo Kim and Sun-Kyu Lee, “Design of the retrodiffraction gratings utilizing total internal reflection facets based on Taguchi method : polarization-insensitive and polarization-sensitive,” Appl. Opt., Vol. 47, pp. 3246-3253, 2008.

• ChaBum Lee, Kazuhiro Hane and Sun-Kyu Lee, “Optimization of sawtooth gratings by using RCWA and its fabrication on a slanted silicon substrate by Fast Atom Beam etching,” J. Micromech. Microeng., Vol. 18, 045014, 2008.