Detailed Information for Jeong Tae Ok

Dr. Jeong Tae Ok 
Engineering, McCoy School of
 » Assistant Professor
Office Location
McCoy Engineering Hall 219C
Office Hours

MTWRF 10-12

 
Phone
Voice: (940) 397-4289
Fax: (940) 397-4536
 
 

Contact Information

jeong.ok@mwsu.edu

My Websites

Interests

1) Micro/nanofluidics: Two-phase flow in micro- and nanoscale porous media analogs (micro/nanomodel), enhanced micro- and nanoscale heat transfer, self-propelled liquid motion, Leidenfrost drop, superhydrophobic surface and water repellency, Computational Microfluidics using COMSOL Multiphysicsand BioMEMS.

2) Mico/nanofabrication: nanoimprint lithography (NIL), 3D molding, field emission of carbon nanotubes (CNTs), miniaturized ratchets/asymmetric structures, and MEMS.

3) Sustainable Power Generation: Solar-powered Alpha Stirling Dish Engine Energy Harvesting Panel.


Course Information

  Semester Course #    Section Course Name Location Days / Times
Details Spring 2014 4243  21B  Senior Design II Lab    McCoy Engineering Hall 116

W 2:00-5:50 PM

Details Spring 2014 3234  21B  Heat Transfer Lab    McCoy Engineering Hall 118

T 4:00-5:50 PM

Details Spring 2014 3234  21C  Heat Transfer Lab    McCoy Engineering Hall 118

R 3:00-4:50 PM

Details Spring 2014 2213  201  Dynamics    McCoy Engineering Hall 205

MWF 8:00-8:50 AM

Details Spring 2014 1202  201  Solid Modeling    McCoy Engineering Hall 207

M 1:00-4:50 PM

Details Spring 2014 1202  202  Solid Modeling    McCoy Engineering Hall 207

F 1:00-4:50 PM

Details Fall 2013 4143  101  Senior Design I Lab    McCoy Engineering Hall 116

W 2:00-5:50 PM

Details Fall 2013 3114  11C  Materials Science Lab    McCoy Engineering Hall 131 125

F 1:00-2:50 PM

Details Fall 2013 3104  11A  Fluid Mechanics Lab    McCoy Engineering Hall 123

T 1:00-2:50 PM

Details Fall 2013 3104  101  Fluid Mechanics    McCoy Engineering Hall 131

MWF 9:00-9:50 AM

Details Fall 2013 2213  101  Dynamics    McCoy Engineering Hall 205

TR 8:00-9:20 AM

Details Fall 2013 1202  101  Solid Modeling    McCoy Engineering Hall 207

M 1:00-4:50 PM




Education Background

Institution Degree    Graduation Date
Sun Moon University BS, Mechanical Engineering 1995-2-17 0:0:0 
Sun Moon University ME, Electronics Engineering 1998-2-13 0:0:0 
Louisiana State University MS, Electrical and Computer Engineering 2007-5-18 0:0:0 
Louisiana State University PhD, Engineering Science 2011-5-20 0:0:0 



Employment Background

Institution Position Start Date / End Date
 Republic of Korean Marine Corps (ROKMC)  Infantry Platoon Leader and Battalion Executive Officer  1999-07-01  2002-06-30
 Colorado School of Mines  Postdoc. Dept. of Chemical & Biological Engineering  2011-07-18  2013-07-31
 Midwestern State University  Assistant Professor  2013-Aug  Present



Research and Publications

ONGOING RESEARCH PROJECTS

1. Film-boiling Liquid Motion on Asymmetric Ratchets: Influence of Ratchet Material and Aspect Ratio, 2014 Spring EURECA & UGROW, and COSM Faculty Research Award with Mr. Mark Weller.

2. Solar Stirling Dish Engine Energy Harvesting Panel, 2013-2014 Senior Design Project with Dr. Salim Azzouz and Mr. Mark Weller.

3. Computational Micro- and Nanofluidics using COMSOL Multiphysics: Microfluidics Module, Internal Faculty Research Grant Awards ($4,975, by Aug. 31. 2014).

4. Fully Developed Velocity Profiles of Turbulent Air Flow using Constant Temperature Hot Wire Anemometer Loop, Continuous Senior Design Project with Dr. Idir Azouz and Dr. Salim Azzouz.

5. Development of Image Processing tool for Leidenfrost-Ratchets Systems, For URCAF Spring 2014  with Dr. Catherine V. Stringfellow and Dr. Yu Guo.

 

REFEREED JOURNAL PUBLICATIONS

* indicates co-first authorship.

1. Jeong Tae Ok, Daniel Sang-Won Park, Sunggook Park, “Dynamical characteristics of Leidenfrost drop on microratchets” in preparation.

2. Bahador Farshchian, Junseo Choi, Jeong Tae Ok, Lance Brumfield, Sunggook Park, “Fabrication and characterization of biomimetic superhydrophobic surface” in preparation.

3. Sunggook Park*, Jeong Tae Ok*, Jinsoo Kim, “Effect of Liquids on Leidenfrost Droplet Motion on Micro/Nanoscale Ratchets”, in preparation.

4. Xu Wei*, Jeong Tae Ok*, Feng Xiao, Xiaolong Yin, Keith Neeves, “Effect of Pore Geometry on Water Flooding and Surfactant EOR Studied by Microfluidic Porous Media Analogs” submitted in Phys. Fluids (Aug. 2013), under review.

5. Qihua Wu, Bai Baojun, Yinfa Ma, Jeong Tae Ok, Keith B. Neeves, Xiaolong Yin,  2014, "Optic imaging of two-phase flow behavior in one dimensional nano-scale channels" SPE Journal, in press.

6. Steven M. Hurst, Bahador Farshchian, Lance Brumfield, Jeong Tae Ok, Junseo Choi, Jinsoo Kim, and Sunggook Park, 2013, “Low Cost Fabrication of A Superhydrophobic V-Grooved Polymer Surface”, J. Nanosci. Nanotechnol. 13, pp. 1884-1887.

7. Qihua Wu, Jeong Tae Ok, Yongpeng Sun, S. T. Retterer, Keith B. Neeves, Xiaolong Yin, Bai Baojun, Yinfa Ma, 2013, “Optic imaging of single and two-phase pressure driven flow in nano-scale channels” Lap Chip 13, pp. 1165–1171.

8. Jeong Tae Ok, Eugene Lopez-Ona, Dimitris Nikitopoulos, Harris Wong, Sunggook Park, 2011, “Propulsion of droplets on micro- and sub-micron ratchet surfaces in the Leidenfrost temperature regime”, Microfluid. Nanofluid. 10 (5), pp. 1045–1054.

9. Charan Masarapu, Jeong Tae Ok, Bingqing Wei, 2007, “Carbon Nanotube Based Field Emission Diodes and Their Thermal Stability”, J. Phys. Chem. C 111, pp. 12112–12115.

10. J.W. Kim, J.S. Moon, D.W. Kim, M.Y. Jung, J.T. Ok, S.S. Choi, H.J. Lim, J.S. Yang, J. H. Boo, 2006, “NEMS fabrication of metal coated sub-wavelength size aperture array and its optical characterization”, Thin Solid Films 506–507, pp. 225–229.

11. Kim, D. W., Ok, J.T., Choi, S. S., Chun, C. K., Kim, J. W., Boo, J. H., 2004, “Analysis of the aperture formation mechanism in the fabrication process of nano-aperture arrays”, Microelectronic Engineering 73–74, pp. 656–661.

 

REFEREED CONFERENCE PROCEEDINGS

1. Jeong Tae Ok, Daniel Sang-Won Park, Sunggook Park, “Leidenfrost liquid drops on miniaturized ratchets: the influence of drop impact speed”, 2014 Proceeding of the MicroTAS (Micro Total Analysis Systems), October 26-30, San Antonio, USA, 2 page abstract accepted  on June 30 (paper ID#: 0825).

2. Lei Wang, Elham Parsa, Yuefeng Gao, Jeong Tae Ok, Keith Neeves, Erdal Ozkan, Xiaolong Yin, "Experimental Study and Modeling of the Effect of Nanoconfinement on Hydrocarbon Phase Behavior in Unconventional Reservoirs", 2014 SPE Western North America and Rocky Mountain Joint Conference and Exhibition, April 16-18, 2014, Denver, CO, USA,14WRRM-P-233-SPE.

3. Qihua Wu, Baojun Bai, Yinfa Ma, Jeong Tae Ok, Keith Neeves, Xiaolong Yin, "Optic Imaging of Two-phase Flow Behavior in Nano-scale Fractures", 2013 SPE Unconventional Resources Conference - USA, Apr 10-12, 2013, The Woodlands, TX, USA, SPE164549.

4. Sunggook Park, Jeong Tae Ok, Jinsoo Kim, “Effect of Liquids on Leidenfrost Droplet Motion on Micro/Nanoscale Ratchets”, ICNST 2012 (International Conference on Nano Science and Nano Technology), Gwangju, Korea, Nov. 8-9, 2012, Nano Energy, S04-1016.

5. Lance Brumfiled, Jeong Tae Ok, Sunggook Park, “Pool Boiling Enhancement Via Micro Ratchets”, 2011 Proceedings of the ASME International Mechanical Engineering Congress & Exposition, November 11-17, Denver, USA, IMECE2011-63736.

6. Jeong Tae Ok, Bahador Farshchian, Daniel Sang-Won Park, Sunggook Park, “The influence of ratchets dimension and shape on the motion of Leidenfrost droplet”, 2010 Proceedings of the ASME International Mechanical Engineering Congress & Exposition, November 12-18, Vancouver, British Columbia, Canada, IMECE2010-37986.

7. Bahador Farshchian, Jeong Tae Ok, Steven Maxwell Hurst, Sunggook Park, “Simple Fabrication of Hierarchical Structures on a Polymer Surface”, NSTI (Nano Science and Technology Institute) Nanotech 2010, June 21-24, Anaheim, USA.

8. Bahador Farshchian, Jeong Tae Ok, Jaejong Lee, Sunggook Park, “3-D integration of micro-gratings into bio-analytical devices”, 2009 Proceedings of the ASME International Mechanical Engineering Congress & Exposition, November 13-19, Lake Buena Vista, FL, USA, IMECE2009-11934.

9. Jeong Tae Ok, Eugene Lopez-Ona, Harris Wong, Sunggook Park, “Effect of surface wetting of micro/nano ratchets on Leidenfrost liquid drop motion”, 2009 Proceedings of the ASME 7th International Conference on Nanochannels, Microchannels and Minichannels, June 22-24, Pohang, South Korea, ICNMM2009-82173.

10. Jeong Tae Ok, Eugene Lopez-Ona, Daniel Sang-Won Park, Harris Wong, Sunggook Park, “Fabrication of 3-D superhydrophobic micro-ratchets via combined thermal imprint lithography and photolithography”, 2008 Proceedings of the ASME International Mechanical Engineering Congress & Exposition, October 31-November 6, Boston, USA, IMECE2008-67880.

11. Jeong Tae Ok, Eugene Lopez-Ona, Harris Wong, Sunggook Park, “Leidenfrost liquid droplets on micro/nano ratchets”, 2008 Proceeding of the MicroTAS (Micro Total Analysis Systems), October 12-16, San Diego, USA, pp. 1672-1674.

12. J.T. OkS.S. Choi, D.W. Kim, C.K. Chun, J.W. Kim, J.H. Boo, “Nanofabrication of Sub-Wavelength size Aperture Array For Near field Optical Probe Array”, Proceeding of the IEEE-NANO 2003, August 12-14, San Francisco, USA, 832-835.

13. Seong S. Choi, J.T. Ok, D.W. Kim, J.H. Boo, "Nanofabrication of Al-coated Oxide Aperture for NSOM Using Isotropic Etching Technique", 2003 AIP Conference Proceedings, July 21-25, Eindhoven, Netherland, 696(1):336-342.

 

CONFERENCE ABSTRACTS FOR ORAL/POSTER PRESENTATIONS

1. Jeong Tae Ok, Sunggook Park, "The influence of micro scale ratchet depth on the motion of Leidenfrost drop", 2014 Extended Abstract Publication of the ASME International Mechanical Engineering Congress & Exposition, November 14-20, Montreal, Canada, IMECE2014-37650, accepted on Mar. 3.

2. Joanna Sylman, Jeong Tae Ok, and Keith B. Neeves, “A microelectrode heating model of vascular injury to study nitric oxide-platelet interactions”, Biomedical Engineering Society (BMES) Annual Meeting, September 25-28, 2013 in Seattle, Washington.

3. Yinfa Ma, Qihua Wu, Baojun Bai, Jeong Tae Ok, Yongpeng Sun, Xiaolong Yin, Keith Neeves, "Optical imaging of gas/water two phase flow behavior in nanochannels using single molecule imaging system", 2013 25th American Chemical Society National Meeting, April 7-11, New Orleans, LA.

4. Qihua Wu, Baojun Bai, Yinfa Ma, Jeong Tae Ok, Yongpeng Sun, Xiaolong Yin, and Keith Neeves, "Bisualization of gas/water two phase flow and displacement of gas/water in nanochannels using single molecule imaging system", 2013 Pittsburgh Conference, March 17-21, Philadelphia, PA.

5. Wei Xu, Jeong Tae Ok, Keith B. Neeves, and Xiaolong Yin, “Water-Oil Drainage Dynamics in Oil-Wet Random Microfluidic Porous Media Analogs”, APS Physics, Division of Fluid Dynamics, Video Gallery, 2012, Oct. 12, Submission#: 83937.

6. Xiaolong Yin, Wei Xu, Jeong Tae Ok, Keith B. Neeves, “Micromodel Study of Influence of Pore Geometry on Water-Oil Displacement with and without Surfactant”, American Geophysical Union, Dec. 3-7, 2012, San Francisco, USA, H53G-1606.

7. Wei Xu, Jeong Tae Ok, Keith B. Neeves, Xiaolong Yin, “Visualization of Water flooding and formation damage in micro- and nanofluidic porous media analogs”, The Flow & Transport in Permeable Media Gordon Research Conference, Les Diablerets, Switzerland, June 24-29, 2012.

8. Wei Xu, Jeong Tae Ok, Keith B. Neeves, Xiaolong Yin, “Visualization of waterflooding and formation damage / water retention on PDMS-based microfluidic micromodels”, Conference on Earth & Energy Research 2012, Until the Last Drop: Enhanced Oil Recovery, Colorado School of Mines, Golden, CO, March 29, 2012, pp 128.

9. Jeong Tae Ok, “Leidenfrost droplets on micro/nano ratchets”, 2010 ME Annual Graduate Student Conference, Louisiana State University, Baton Rouge, April 10, 2010, pp. 11-12.

10. Jeong Tae Ok, Eugene Lopez-Ona, Harris Wong, Sunggook Park, “Liquid motion on micro/nanoscale ratchet surfaces in the film-boiling regime”, FAAM (First American Academy of Mechanics) conference 2008, New Orleans, USA, June 17-20, 2008, Microfluidics: Fundamentals and Applications 190183.

11. Jeong Tae Ok, Eugene Lopez-Ona, Harris Wong, Sunggook Park, “Self-propelled Liquid Motion on Micro-/Nanometer Scale Ratchet Surfaces”, NSTI (Nano Science and Technology Institute) Nanotech 2008, June 2-5, Boston, USA, Micro & Nano Fluidics WE80.203.

12. Bingqing Wei, Abhilash Krishna, Jeong Tae Ok, “Effects of Physical Layout Temperature and Pressure on Field Emission Properties of Carbon Nanotubes”, Nanodevices and Nanofabrication 2005, Singapore, July 3-8, 2005.

13. S.S. Choi, J.T. Ok, M.Y. Jung, D.W. Kim, “Fabrication of Metal Coated Sub-Wavelength size Aperture Array and Its Optical Characterization”, The Korean Physical Society ’03, Yonsei University, Seoul, South Korea, April 25-26, 2003.

14. J.T. Ok, E.S. Kim, “Programmable Analog-Pulse Neural Networks”, Korea Information Science Society ’97, Sun Moon University, Asan, Chungnam, South Korea, Dec. 5-6, 1997.

15. J.T. Ok, E.S. Kim, "Hardware Implementation of Analog-Pulse Neural Networks and the Characterization", JCEANF '97, Korea University, Seoul, South Korea, Jun 20, 1997.