NanoFab & BioMEMS Lab @UCF
 






 
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NEWS

UCF’s College of Engineering and Computer Science is one of the best 100 in the world, according to The Academic Ranking of World Universities.

UCF is ranked as one of the top research universities in the United States, according to a nationwide analysis recently released last week by the Carnegie Foundation. UCF was one of 108 public and private universities — among Princeton, Stanford, Harvard and MIT — to receive this distinction from the total 4,633 colleges considered.


 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
























 

 

 

 






 

 

 









 














 

 

 

 

 

 

 

 

 

 

 

 

 
     Hyoung Jin Cho, Ph. D.
  • Professor
  • Director of NanoFab and BioMEMS Lab
  • Department of Mechanical, Materials and Aerospace Engineering
    P.O. Box 162450
    University of Central Florida, Orlando, FL 32816-2450
  • On Campus Office: Engineering I - 381C (UG Advising Office)
  • Lab: Engineering 1-334, Engineering1-124(Cleanroom)
  • Phone: (407) 823-5014
  • Fax: (407) 823-0208
  • E-mail:hjchoucf.edu
  • C.V.
     Biography
  • I earned my doctoral degree in electrical engineering (specialty: MEMS and BioMEMS) from the University of Cincinnati in 2002. I received  B.S. and M.S. degrees in Materials Science and Engineering from Seoul National University, Korea in 1989 and 1991, respectively. I was with KETI (Korea Electronics Technology Institute) from 1993 to 1997 as a research engineer. I was a NSF CAREER awardee of 2004.
     Recent Publications

  • Visit ReseachGate for the updated list - http://www.researchgate.net/profile/Hyoung_Jin_Cho

  • R. Shabani, R. Kumar, and H. J. Cho, “Droplets on liquid surfaces: Dual equilibrium states and their energy barrier,” Applied Physics Letters, vol. 102, no. 18, p. 184101, 2013. http://dx.doi.org/10.1063/1.4804242

  • R. Shabani and H. J. Cho, “Flow rate analysis of an EWOD-based device: how important are wetting-line pinning and velocity effects?,” Microfluidics and Nanofluidics, Apr. 2013. http://dx.doi.org/10.1007/s10404-013-1184-y

  • R. Shabani and H. J. Cho, “Active surface tension driven micropump using droplet/meniscus pressure gradient,” Sensors and Actuators B: Chemical, vol. 180, pp. 114–121, Apr. 2013. http://dx.doi.org/10.1016/j.snb.2012.05.058

  • J. Lee, J. Kim, H. Kim, Y. M. Bae, K.-H. Lee, and H. J. Cho, “Effect of thermal treatment on the chemical resistance of polydimethylsiloxane for microfluidic devices,” Journal of Micromechanics and Microengineering, vol. 23, no. 3, p. 035007, Mar. 2013.doi:10.1088/0960-1317/23/3/035007

  • S.-H. Bae, O. Kahya, B. K. Sharma, J. Kwon, H. J. Cho, B. Özyilmaz, and J.-H. Ahn, “Graphene-P(VDF-TrFE) Multilayer Film for Flexible Applications,” ACS Nano, vol. 7, no. 4, pp. 3130–3138, Apr. 2013.http://dx.doi.org/10.1021/nn400848j

  • R. McCormack, N. Shirato, U. Singh, S. Das, A. Kumar, H. J. Cho, R. Kalyanaraman, and S. Seal, “Laser irradiated nano-architectured undoped tin oxide arrays: mechanism of ultrasensitive room temperature hydrogen sensing,” Nanoscale, vol. 4, no. 22, pp. 7256–7265, 2012.
    http://dx.doi.org/10.1039/c2nr32217j

  • R. Shabani and H. J. Cho, “Review of Nanomaterials in Actuators”, Reviews in Nanoscience and Nanotechnology, pp. 85-102, vol. 1, 2012. http://dx.doi.org/10.1166/rnn.2012.1006

  • E. Yakhshi-Tafti, R. Kumar, and H. J. Cho, “Measurement of Surface Interfacial Tension as a Function of Temperature Using Pendant Drop Images,” International Journal of Optomechatronics, vol. 5, no. 4, pp. 393-403, 2011. http://dx.doi.org/10.1080/15599612.2011.633206

  • R. Shabani and H. J. Cho, "A micropump controlled by EWOD: wetting line energy and velocity effects", Lab Chip, pp. 3401-3403, Vol. 11, 2011.  http://dx.doi.org/10.1039/C1LC20440H

  • H. A. Lee, Y.-C. Byun, U. Singh, H. J. Cho and H. Kim, "Surface Modification of Carbon Post Arrays by Atomic Layer Deposition of ZnO Film", pp. 7322-7326, Vol. 11, No. 8, 2011. DOI: 10.1166/jnn.2011.4827

  • S.-E. Zhu, R. Shabani, J. Rho, Y. Kim, B, Hong, J.-H. Ahn and H. J. Cho, “Graphene-based Bimorph Microactuators,” Nano Letters, pp.977-981, Vol. 11, 2011. DOI: 10.1021/nl103618e

  • E. Yakhshi-Tafti, G. Londe, A. Chunder, L. Zhai, R. Kumar, and H. J. Cho, "Wettability Control and Flow Regulation Using a Nanostructure-Embedded Surface," Journal of Nanoscience and Nanotechnology, pp. 1417-1420, Vol. 11, No. 2, 2011, DOI: 10.1166/jnn.2011.3400

  • N. Shirato, J. Strader, A. Kumar. A. Vincent, P. Zhang, A. Karaoki, P. Nacchimuthu, H. J. Cho. S. Seal and R. Kalyanaraman, “Thickness dependent self limiting 1-D tin oxide nanowire arrays by nanosecond pulsed laser irradiation,” Nanoscale, pp.1090-1101, Vol. 3, 2011.  DOI: 10.1039/C0NR00689K

  • E. Yakhshi-Tafti, H. J. Cho, and R. Kumar, "Diffusive Mixing Through Velocity Profile Variation in Microchannels", Experiments in Fluids, pp. 535-545, Vol. 50, No. 3, pp.535-545, 2011, DOI 10.1007/s00348-010-0954-5

  • E. Yakhshi-Tafti, H. J. Cho, and R. Kumar, "Impact of drops on the surface of immiscible liquids," Journal of Colloid and Interface Science,pp.373-376, Vol. 350, No. 1, 2010, doi:10.1016/j.jcis.2010.06.029

  • E.Yakhshi-Tafti, H. J. Cho and R. Kumar, “Droplet actuation on a liquid layer due to thermocapillary motion: Shape effect”, Applied Physics Letters, 264101 (3 pages), Vol.. 96,  2010

  • P. Zhang, A. Vincent, A. Kumar, S. Seal and H. J. Cho, “A Low-Energy Room-Temperature Hydrogen Nanosensor: Utilizing the Schottky Barriers at the Electrode/Sensing-Material Interfaces”, IEEE Electron Device Letters, pp. 770-772, Vol. 31, Issue 7, 2010

  • G. Londe, A. Chunder, L. Zhai and H. J. Cho, “An Analytical Model for Wettability Switching Characteristic of a Nanostructured Thermoresponsive Surface”, Applied Physics Letters, 164104, Vol. 94, 2009

  • A. Chunder, K. Etcheverry, G. Londe, H. J. Cho and L. Zhai, “Conformal switchable superhydrophobic/hydrophilic surfaces for microscale flow control”, Colloids and Surfaces A: Physicochem. Eng. Aspects, pp. 187-193,  Vol. 333, 2009

     Teaching
  • EML6085 Research Methods
  • EML6299 Advanced Topics in Miniaturization
  • EEE 6326C MEMS Fabrication Laboratory
  • EML 5291 MEMS Materials
  • EML4005 Design in Nature and Engineering
  • EAS4710C, EGN4413C Senior Design II
  • EAS4700C, EGN4412C Senior Design I
  • EMA3124 Design and Selection of Materials
     Research
  • Microfluidic system - valve, pump and dispenser
  • MOEMS (Micro-Opto-Electro-Mechanical-Systems) - mirrors and switches
  • Magnetic MEMS - magnetic sensor and actuator
  • MEMS fundamentals- UV-LIGA, electroplating and packaging.
  • Nanofabrication
  • Polymer micromachining
  • Hybrid MEMS - organic-inorganic hybdrid system for flow regulation
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     Active Projects
  • NSF I/UCRC MIST (Multi-functional Integrated System Technology Center

  • NUE: Collaborative Networked Virtual Experiences for Nanotechnology Education (CONVENE)

  • Droplet Thermotaxis: A New Platform Technology for Droplet-based Microfluidic Systems (PI), National Science Foundation

  • Collaborative: Regenerative Nanosensors for Qunatitative Assessment of Oxidative Stress in Neurodegeneration (PI), National Science Foundation

 

     Professional Service
  • Editorial Board (2009-  ), International Journal of Optomechatronics
  • Journal Referee - Journal of Micromechanics and Microengineering, Lab on a Chip, Langmuir, Sensors and Actuators, Microfluidics and Nanofluidics, Journal of Applied Physics, Thin Solid Films, IEEE/ASME Trans. on Mechatronics, IEEE Sensors, etc.  
  • Associate Chair (2014 - )
  • Member - IEEE, ASME
     Honors and Awards
  • WCU (World Class University) Visiting Professorship, Ministry of Education, Science and Technology, Korea (2009-10)
  • Distinguished Resarch Award - College of Engineering and Computer Science, University of Central Florida, 2007
  • NSF CAREER AWARD* (2004) - Electrical and Communications Systems Division, National Science Foundation
    *Formerly known as NSF Young Investigator Award
  • Departmental Conference Travel Award - 46th Annual Conference on Magnetism and Magnetic Materials, Seattle, WA  (2001)
  • Conference Travel Award - IEEE MEMS 2000, Miyazaki, Japan (2000)
  • Departmental Conference Travel Award - 44th Annual Conference on Magnetism and Magnetic Materials, San Jose, CA (1999)
  • Outstanding Research Award presented by KETI, Korea (1994)
  • The following paper was acknowledged by IOP Select* (2003)
    H. J. Cho and C. H. Ahn, "Magnetically-driven bi-directional optical microscanner ", Journal of  Micromechanics and Microengineering, pp. 383-389, Vol. 13, No.3, 2003.
    * IOP Select reflects both the breadth and international significance of papers published in the peer reviewed journals by Institute of Physics.
     

 

 

 

 

 

2003 Nano&BioMEMS@UCF