Bongsang Kim

Doctoral Candidate (Advisor : Thomas W. Kenny)
Micro Structures and Sensors Lab.
Mechanical Engineering
Stanford University

e-mail : bongsang@stanford.edu

address : Kenny Group
            attn : Bongsang Kim
            Building 530 Room 101
            440 Escondido Mall
            Stanford CA 94305-3030

Research Interests
      Long-term stability and temperature stability of MEMS resonators
      Energy loss mechanisms of micro structures
      Waferscale MEMS encapsulations

Education
    Stanford University,
Stanford CA USA
        PhD Candidate in Mechanical Engineering, 2004-2007(expected)
    Stanford University, Stanford CA USA
        M.S in Mechanical Engineering, 2004
    Seoul National University, Seoul Korea
        B.S in Mechanical Design and Production Engineering, 1998
  

Work Experience
    Agilent Technologies, Palo Alto CA USA
(Jun-Sep 2005)
       Technical Intern
         Design of MEMS nano stepper for AFM tip actuator
         Simulation and process development
     Hyundai Mobis, Seoul, Korea (Mar 1998 - Apr 2001)
        Technical Consultant (Sep 1999 -Apr 2002)
          Evaluation and Analysis of Technilogical Level of venture firms interested in investment
        Mechanical Engineer (Mar 1998 -Sep 1999)
          Design, construction, operation, and management of municipal waste incinerator plants

 Publications

B. Kim, C. M. Jha, R. N. Candler, M. Hopcroft, S. Chandorkar, T. White, M. Agarwal, K. K. Park, R. Melamud, and T. W. Kenny, “Temperature Dependence of Quality Factors in MEMS Resonators,” MEMS’06 will be published [pdf]

M. Hopcroft, M. Agarwal, K. K. Park, B. Kim, C. M. Jha, R. N. Candler, G. Yama, B. Murmann, T. W. Kenny, "Temperature Compensation of a MEMS Resonator Using Quality Factor as a Thermimeter," MEMS'06 will be published [pdf]

M. Agarwal, K. K. Park, M. Hopcroft, S. Chandorkar, R. N. Candler, B. Kim, R. Melamud, G. Yama, B. Murmann, T. W. Kenny, "Effects of Mechanical Vibrations and Bias Voltage Noise on MEMS Resonator Based Oscillators," MEMS'06 will be published [pdf]

M. Agarwal, K. K. Park, R. N. Candler, M. Hopcroft, C. M. Jha, R. Melamud, B. Kim, B. Murmann, T. W. Kenny, "Non-Linearity Cancellation in MEMS Resonators for Improved Power-Handling," IEDM'05 [pdf]

A. Patridge, M. Lutz, B. Kim, M. Hopcroft, R. N. Candler, T. W. Kenny, K Petersen, M Esashi, "MEMS Resonators : Getting the Packaging Right," Semicon Japan 2005 [pdf]

R. N. Candler, A. Duwel, M. Varghese, S. A. Chandorkar, M.Hopcroft, W.-T. Park, B. Kim, G. Yama, A. Partridge, M. Lutz, and T. W. Kenny, "Impact of Geometry on Thermoelastic Dissipation in Micromechanical Resonant Beams," In Review, Journal of Microelectromechanical Systems, 2005 [pdf]

R. N. Candler, M. Hopcroft, B. Kim, W.-T. Park, R. Melamud, M.Agarwal, G. Yama, A. Partridge, M. Lutz, and T. W. Kenny, "Long-Term and Accelerated Life Testing of a Novel Single-Wafer Vacuum Encapsulation of MEMS Resonators," Journal of Microelectromechanical Systems, In Review, 2005 [pdf]

B. Kim, R. N. Candler, M. Hopcroft, M. Agarwal, W.-T Park, and T. W. Kenny, “Frequency Stability of Encapsulated MEMS Resonator,” Sensors and Actuators, will be published. [pdf]

B. Kim, R. N. Candler, M. Hopcroft, M. Agarwal, W.-T. Park, T. W. Kenny, "Frequency Stability of Wafer-Scale Encapsulated MEMS Resonators," Tranducers '05, vol. 2, pp. 1965-1968, 2005. [pdf]

R. Melamud, M. Hopcroft, C.M.Jha, B. Kim, S. Chandorkar, R. Candler, T. W. Kenny, "Effects of Stress on the Temperature Coeeficient of Frequency in Double Clamped Resonators," Tranducers '05, vol. 1, pp. 392-395, 2005. [pdf]

R. N. Candler, M. Hopcroft, C. Low, S. Chandorkar, B. Kim, M. Varghese, A. Duwel, T. W. Kenny, "Impact of Slot Location on Thermoelastic Dissipation in Micromechanical Resonators," Tranducers '05, vol. 1, pp. 597-600, 2005. [pdf]

R. N. Candler, W.-T. Park, M. Hopcroft, B. Kim, T. W. Kenny, "Hydrogen Diffusion and Pressure Control of Encapsulated MEMS Resonators," Tranducers '05, vol. 1, pp. 920-923, 2005. [pdf]

B. Kim, R. N. Candler, M. Hopcroft, M. Agarwal, W.-T Park, J. Li, and T. W. Kenny, “Investigation of MEMS Resonators Characteristics for Long-Term Operation and Wide Temperature Variation Condition,” 2004 ASME International Mechanical Engineering Congress and RD&D Expo, 2004. [pdf]

M. Hopcroft, R. Melamud, R. N. Candler, W.-T. Park, B. Kim, G. Yama, A. Patridge, M. Lutz, and T. W. Kenny, “Active Temperature Compensation for Micromachined Resonator,” IEEE Solid-State Sensor and Actuator Workshop 2004, Hilton Head, South Carolina, June 6-12, 2004 [pdf]

 B. Kim, R. N. Candler, M. Agarwal, W.-T.Park, and T. W. Kenny, “Long-term Measurement of Quality Factor for MEMS Resonators – Pressure and Leak within Encapsulation,” presented Open Poster, IEEE Solid-State Sensor and Actuator Workshop 2004, Hilton Head, South Carolina, June 6-12, 2004
 

Invited Talk
    "
MEMS Resonators : Next Generation Frequency References",
Staford University DIMSUM of Mechanical Engineering, Dec 8, 2005

Personal Pictures
     Wife - Myungshin Shayna Kim
     Mom and Dad
     Jihyun and Bongjun
     In-Laws
     Tom Kenny and Kenny Lab
     High School Friends
     Undergraduate Friends
     GMR
     Hyundai Mobis