Hongki Kang

PhD Candidate in EECS (Research Advisor: Vivek Subramanian)

University of California at Berkeley

E-mail: hkang at eecs dot berkeley dot edu

Address: EECS Department

               205 Cory Hall #1772

               Berkeley CA 94720-1772

RESEARCH INTERESTS

  • Roll-to-roll/inkjet-printed TFTs, MEMS, and integrated circuits
  • Impact of Hydrostatic/dynamics and wetting phenomena on printed electronic devices
  • Solution processed low-cost and large area electronsic devices and their novel applications particularly on bio and biomedical applications.
  • Low frequency noise behaviour of disordered semiconductor devices for RF/sensor applications.

EDUCATION

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Ph.D. advanced to candidacy, Electrical Engineering, August 2008 - Current

UC Berkeley , CA, USA

Research Advisor: Vivek Subramanian

Current GPA: 3.869/4.0

Thesis (proposed): Gravure-printed Highly-scaled Organic Thin-film Transistors for Low-cost and Large-area Electronics

 

M.S., Electrical Engineering, August 2008 - May 2010

UC Berkeley, CA, USA

Research Advisor: Vivek Subramanian

GPA: 3.930/4.0

Thesis: Hydrostatic optimization of inkjet-printed films

 

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B.S., Electrical Engineering, March 2004 - May 2008

KAIST , Daejeon, South Korea

Research Advisor: Yang-Kyu Choi

GPA: 3.95/4.30, Summa Cum Laude

Thesis: Analytical Threshold Voltage Model for Double-Gate MOSFETs with Localized Charges   

PUBLICATIONS

  • Journals
  1.      Hongki Kang, Rungrot Kitsomboonloha, Jaewon Jang, and Vivek Subramanian, "High-performance printed transistors realized using femtoliter gravure-printed Sub-10μm metallic nanoparticle patterns and highly uniform polymer dielectric and semiconductor layers," ADVANCED MATERIALS, 2012. (link)
  2.       Hongki Kang, Lakshmi Jagannathan, and Vivek Subramanian, "Measurement, analysis, and modeling of 1/f noise in pentacene TFTs," APPLIED PHYSICS LETTERS, 99, 062106, 2011. (link)
  3.       Dan Soltman, Ben Smith, Hongki Kang, S.J.S. Morris, and Vivek Subramanian, "Methodology for inkjet printing partially wetting films," LANGMUIR, 2010, 26 (19), pp 15686-15693. (link)
  4.       Alejandro de la Fuente Vornbrock, Donovan Sung, Hongki Kang, Rungrot Kitsomboonloha, and Vivek Subramanian, "Fully gravure and ink-jet printed high speed pBTTT organic thin film transistors," ORGANIC ELECTRONICS, Vol. 11, Issue 12, 2037-2044, DEC 2010. (link)
  5.       Hongki Kang, Dan Soltman, and Vivek Subramanian, "Hydrostatic Optimization of Inkjet-Printed Films ," LANGMUIR, 2010 , 26(13), 11568-11573. (link)
  6.       Hongki Kang, Jin-Woo Han, and Yang-Kyu Choi, "Analytical Threshold Voltage Model for Double-Gate MOSFETs with Localized Charges ," IEEE ELECTRON DEVICE LETTERS, VOL. 29, NO. 8, 927-930, AUGUST 2008. (link)
  • Conferences
  1.      Hongki Kang, Alejandro de la Fuente Vornbrock, Rungrot Kitsomboonloha, Jaewon Jang and Vivek Subramanian, "Highly-Scaled Gravure Printed organic TFTs with 10μm channel length on Plastic with 300 kHz operation," Materials Research Society, San Francisco, US, Spring 2012.
  2.      Hongki Kang, Huai-Yuan Tseng, Rungrot Kitsomboonloha, and Vivek Subramanian, "High-performance printed organic transistors: Advances in printing techniques and processes," 2012 Flexible Electronics & Displays Conference & Exhibition, Phoenix, AZ, Feb 6-9, 2012. (Invited)
  3.       Hongki Kang, Lakshmi Jagannathan, and Vivek Subramanian, "Measurement, analysis, and modeling of 1/f noise in pentacene TFTs," LOPE-C, Messe Frankfurt, Germany, June 2011.
  4.       Jaewon Jang, Rungrot Kitsomboonloha, Lakshmi Jagannathan, Hongki Kang and Vivek Subramanian, "Electrical Characterization of close-packed ZnSe Nanoparticle Films," Materials Research Society, Boston, US, Fall 2010.
  5.       Dan Soltman, Ben Smith, Hongki Kang, Stephen Morris, and Vivek Subramanian, "Methodology for Inkjet Printing Partially Wetting Films," IS&T Digital Fabrication conference, Austin, TX, Sept. 19-23, 2010.
  6.       Dan Soltman, Ben Smith, Hongki Kang, Stephen Morris, and Vivek Subramanian, "Methodology for two dimensional pattern generation in inkjet printing," LOPE-C, Messe Frankfurt, Germany, May 2010.
  7.       Hongki Kang, Dan Soltman, and Vivek Subramanian, "Hydrostatic concerns in inkjet-printed films," Materials Research Society, San Francisco, US, Spring 2010.
  8.       Dan Soltman, Hongki Kang, and Vivek Subramanian, "Considerations for pattern generation in inkjet-printed electronics," SPIE Advanced Lithography, San Jose, US, Feb 2010.

RESEARCH EXPERIENCE

  • Organic Electronics Group, UC Berkeley, Berkeley, CA US Oct. 2008 - Current

Graduate student researcher

Worked on;

            - Direct-Gravure Printed Highly-scaled Features and Thin-Film Transistorss

            - Understanding Low Frequency Noise (1/f noise) of Organic TFTs

            - Fundamental understanding of inkjet-printed two dimensional films

            - Dielectric materials for organic TFTs

            - and so on...

Advisor: Prof. Vivek Subramanian

 

  • Integrated Organic Electronics Lab, KAIST, Daejeon, South Korea Sep. 2007 - May 2008

Undergraduate Researcher

Worked on the fabrication of organic conductors by using Micro Contact Printing (uCP) for URP (Undergraduate Research participation) program sponsored by KAIST

Advisor: Prof. Seunghyup Yoo

 

  • Nano Bio Electronics Laboratory, KAIST, Daejeon, South Korea Mar. 2007 - Dec. 2007

Undergraduate Researcher

Worked on Hot-Carrier-Effects in Double Gate MOSFETs for URP (Undergraduate Research participation) program sponsored by KAIST

Advisor: Prof. Yang-Kyu Choi

TEACHING EXPERIENCE

  • Graduate Student Instructor, UC Berkeley, Berkeley, CA US
    EE40, Introduction to Microelectronic Circuits (Summer 2009), Overall teaching effectiveness: Not Available
    EE42/100, Introduction to Digital Electronics (Fall 2009), Overall teaching effectiveness: 4.3/5.0
    EE42/100, Introduction to Digital Electronics (Fall 2011), Overall teaching effectiveness: 5.0/5.0

HONORS AND AWARDS

  • Scholarship of The Presidential Science Scholarship (from Korea Science and Engineering Foundation) certified by South Korea President Roh, Moo-hyun Mar. 2004 - Feb. 2008
  • Scholarship of Samsung, JFL (Junior Frontier Leader), 2002
  • Gold Prize at 15th National Math/Science Olympiad for high school students, Physics Part, Aug. 2003

ENGINEERING SKILL

  • Printed Electronics fabrication; Inkjet printing, Gravure printing, Micro-contact printing.
  • Sentaurus, Silvaco, Cadence, L-Edit
  • Micro/nanofabrication
  • Device characterization; Silicon based transistors, and printed TFTs
  • Dynamic contact angle characterization
  • Transistor noise signal measurement & characterization

ACTIVITY

  • A chair of the Newspaper of Electrical Engineering Department at KAIST Mar. 2006 - May 2008.
  • Acoustic Guitar club at KAIST (performed more than 15 big and small concerts)
  • A certificate achievement of 12th International Physics Olympiad Summer School, Korea Division Jul. 2002
  • Director of Industrial Relationship at KGSA (Korean Graduate Student Association at UC Berkeley)  Jul. 2011 ?May 2012.

 
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