Micro Structures & Sensors Lab
Kenny Group @ Stanford

Eldwin Jiaqiang Ng


PhD Candidate

eldwin :at: mems.stanford.edu
440 Escondido Mall, Bldg 530-224
Stanford, CA 94305, USA
Advisor: Thomas W. Kenny


Education

Stanford University
(2012 - present) PhD Candidate in Mechanical Engineering

Stanford University
(2010 - 2012) M.S. in Mechanical Engineering

University of California - Berkeley
(2006 - 2009) B.S. in Mechanical Engineering

Experience

Robert Bosch RTC, Palo Alto, California, USA
(2012) Intern
Microfabrication of Atomic Layer Deposited (ALD) Bolometers

Institute of Microelectronics, Singapore
(2009 - 2010) Research Officer
Piezoelectric aluminum nitride microelectromechanical resonators and capacitive nanoelectromechanical switches

Lawrence Berkeley National Laboratory, Berkeley, California, USA
(2008-2009) Student Intern
Nanostructured TiO2 dye-sensitized solar cells

Fellowships / Awards

BS-PhD Fellowship from the Agency for Science, Technology, and Research (A*STAR), Singapore
(2006-2015)

Publications

Journal
Vu A. Hong, Shingo Yoneoka, Matthew W. Messana, Andrew B. Graham, James C. Salvia, Todd T. Branchflower, Eldwin J. Ng, and Thomas W. Kenny, "Fatigue Experiments on Single Crystal Silicon in an Oxygen-Free Environment," Journal of Microelectromechanical Systems, 2014.
Journal
Chae Hyuck Ahn, Eldwin J. Ng, Vu A. Hong, Yushi Yang, Brian J. Lee, Ian Flader, Thomas W. Kenny, "Mode-Matching of Wineglass Mode Disk Resonator Gyroscope in (100) Single Crystal Silicon," Journal of Microelectromechanical Systems, 2014.
Conference
J. Lake, Y.-H. Hwang, E. Ng, C.-H. Ahn, V. Hong, Y. Yang, Y. Dai, and R. Candler, "Experimental Validation of 3D Intuitive Modeling Approach for Anchor Loss in MEMS Resonators," Solid-State Sensors, Actuators, and Microsystems Workshop, Hilton Head 2014, pp. 277-280, 2014.
Conference
C.L. Roozeboom, B.E. Hill, V.A. Hong, C.H. Ahn, E.J. Ng, Y. Yang, M.A. Hopcroft, and B.L. Pruitt, "Multifunctional Integrated Sensor Monitoring," Solid-State Sensors, Actuators, and Microsystems Workshop, Hilton Head 2014, pp. 447-448, 2014.
Conference
Yushi Yang, Eldwin J. Ng, Vu A. Hong, Chae Hyuck Ahn, Yunhan Chen, Elia Ahadi, Mark Dykman, and Thomas W. Kenny, "Measurement of the nonlinear elasticity of doped bulk-mode MEMS resonators," Solid-State Sensors, Actuators, and Microsystems Workshop, Hilton Head 2014, pp. 285-288, 2014.
Conference
M. Li, S. Sonmezoglu, E.J. Ng, V.A. Hong, C.H. Ahn, Y. Yang, T.W. Kenny, and D.A. Horsley, "Lorentz force magnetometer with quadratrue frequency modulation," Solid-State Sensors, Actuators, and Microsystems Workshop, Hilton Head 2014, pp. 52-55, 2014.
Conference
Eldwin J. Ng, Yushi Yang, Yunhan Chen, and Thomas W. Kenny, "An etch hole-free process for temperature-compensated, high Q, encapsulated resonators," Solid-State Sensors, Actuators, and Microsystems Workshop, Hilton Head 2014, pp. 99-100, 2014.
Journal
Bo Woon Soon, Eldwin J. Ng, Vu A. Hong, Yushi Yang, Chae Hyuck Ahn, You Qian, Thomas W. Kenny, and Chengkuo Lee, "Fabrication and Characterization of a Vacuum Encapsulated Curved Beam Switch for Harsh Environment Application," Journal of Microelectromechanical Systems, 2014.
Conference
S. Nitzan, T-H. Su, C. Ahn, E. Ng, V. Hong, Y. Yang, T. Kenny, and D. A. Horsley, "Impact of gyroscope operation above the critical bifurcation threshold on scale factor and bias instability," 2014 IEEE 27th International Conference on Micro Electro Mechanical Systems (MEMS), pp. 749-752, 2014.
Conference
David B. Heinz, Vu A. Hong, Eldwin J. Ng, Chae Hyuck Ahn, Yushi Yang, and Thomas W. Kenny, "Characterization of stiction forces in ultra-clean encapsulated MEMS devices," 2014 IEEE 27th International Conference on Micro Electro Mechanical Systems (MEMS), pp. 588-591, 2014.
Conference
C. L. Roozeboom, V. A. Hong, C. H. Ahn, E. J. Ng, Y. Yang, B. E. Hill, M. A. Hopcroft, and B. L. Pruitt, "Multifunctional integrated sensor in A 2×2 mm epitaxial sealed chip operating in a wireless sensor node," 2014 IEEE 27th International Conference on Micro Electro Mechanical Systems (MEMS), pp. 773-776, 2014.
Conference
Mo Li, Eldwin J. Ng, Vu A. Hong, Chae H. Ahn, Yushi Yang, Thomas W. Kenny, and David A. Horsley, "Single-structure 3-axis lorentz force magnetometer with sub-30 nT/√HZ resolution," 2014 IEEE 27th International Conference on Micro Electro Mechanical Systems (MEMS), pp. 80-83, 2014.
Conference
D. Senkal, S. Askari, M. J. Ahamed, E. J. Ng, V. Hong, Y. Yang, C. H. Ahn, T. W. Kenny, and A. M. Shkel, "100K Q-factor toroidal ring gyroscope implemented in wafer-level epitaxial silicon encapsulation process," 2014 IEEE 27th International Conference on Micro Electro Mechanical Systems (MEMS), pp. 24-27, 2014.
Conference
E. J. Ng, Y. Yang,V. A. Hong, C. H. Ahn, D. L. Christensen, B. A. Gibson, K. R. Qalandar, K. L. Turner, T. W. Kenny, "Stable Pull-In Electrodes for Narrow Gap Actuation," IEEE International Conference on Micro Electro Mechanical Systems (MEMS) 2014, pp. 1281-1284, 2014.
Conference
E. J. Ng, K. L. Harrison, C. L. Everhart, V. A. Hong, Y. Yang, C. H. Ahn, D. B. Heinz, R. T. Howe and T. W. Kenny, "Stable Charge-Biased Capacitive Resonators with Encapsulated Switches," IEEE International Conference on Micro Electro Mechanical Systems (MEMS) 2014, pp. 1277-1280, 2014.
Journal
Eldwin J. Ng, Vu A. Hong, Yushi Yang, Chae Hyuck Ahn, Camille L. M. Everhart, and Thomas W. Kenny, "Temperature Dependence of the Elastic Constants of Doped Silicon," Journal of Microelectromechanical Systems, pp. 1-1, 2014.
Journal
Shirin Ghaffari, Saurabh A. Chandorkar, Shasha Wang, Eldwin J. Ng, Chae H. Ahn, Vu Hong, Yushi Yang, and Thomas W. Kenny, "Quantum Limit of Quality Factor in Silicon Micro and Nano Mechanical Resonators," Scientific Reports, Vol. 3, 2013.
Journal
M. Li, E. J. Ng, V. A. Hong, C. H. Ahn, Y. Yang, T. W. Kenny, and D. A. Horsley, "Lorentz force magnetometer using a micromechanical oscillator," Applied Physics Letters, Vol. 103, No. 17, pp. 173504, 2013.
Journal
Shirin Ghaffari, Chae H. Ahn, Eldwin J. Ng, Shasha Wang, and Thomas W. Kenny, "Crystallographic effects in modeling fundamental behavior of MEMS silicon resonators," Microelectronics Journal, Vol. 44, No. 7, pp. 586-591, 2013.
Conference
J. Lake, E. Ng, C.-H. Ahn, V. Hong, Y. Yang, J. Wong, and R. Candler, "Particle swarm optimization for design of MEMS resonators with low thermoelastic dissipation," 2013 Transducers & Eurosensors XXVII: The 17th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS & EUROSENSORS XXVII), pp. 1456-1459, 2013.
Conference
Y. Yang, E. J. Ng, C. H. Ahn, V. A. Hong, E. Ahadi, and T. W. Kenny, "Mechanical coupling of dual breathe-mode ring resonator," 2013 Transducers & Eurosensors XXVII: The 17th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS & EUROSENSORS XXVII), pp. 502-505, 2013.
Conference
V. A. Hong, B. J. Lee, D. L. Christensen, D. B. Heinz, E. J. Ng, C. H. Ahn, Y. Yang, and T. W. Kenny, "X-Y and Z-axis capacitive accelerometers packaged in an ultra-clean hermetic environment," 2013 Transducers & Eurosensors XXVII: The 17th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS & EUROSENSORS XXVII), pp. 618-621, 2013.
Conference
E. J. Ng, C.-F. Chiang, Y. Yang, V. A. Hong, C. H. Ahn, and T. W. Kenny, "Ultra-high aspect ratio trenches in single crystal silicon with epitaxial gap tuning," 2013 Transducers & Eurosensors XXVII: The 17th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS & EUROSENSORS XXVII), pp. 182-185, 2013.
Conference
E. J. Ng, C. H. Ahn, Y. Yang, V. A. Hong, C.-F. Chiang, E. Ahadi, M. W. Ward, and T. W. Kenny, "Localized, degenerately doped epitaxial silicon for temperature compensation of resonant MEMS systems," 2013 Transducers & Eurosensors XXVII: The 17th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS & EUROSENSORS XXVII), pp. 2419-2422, 2013.
Conference
C. H. Ahn, E. J. Ng, V. A. Hong, Y. Yang, B. J. Lee, M. W. Ward, and T. W. Kenny, "Geometric compensation of (100) single crystal silicon disk resonating gyroscope for mode-matching," 2013 Transducers & Eurosensors XXVII: The 17th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS & EUROSENSORS XXVII), pp. 1723-1726, 2013.
Conference
D. L. Christensen, C. H. Ahn, V. A. Hong, E. J. Ng, Y. Yang, B. J. Lee, and T. W. Kenny, "Hermetically encapsulated differential resonant accelerometer," 2013 Transducers & Eurosensors XXVII: The 17th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS & EUROSENSORS XXVII), pp. 606-609, 2013.
Journal
Eldwin J. Ng, Hyung Kyu Lee, Chae Hyuck Ahn, Renata Melamud, and Thomas W. Kenny, "Stability of Silicon Microelectromechanical Systems Resonant Thermometers," IEEE Sensors Journal, Vol. 13, No. 3, pp. 987-993, 2013.
Conference
S. Nitzan, C. H. Ahn, T.-H. Su, M. Li, E. J. Ng, S. Wang, Z. M. Yang, G. O'Brien, B. E. Boser, T. W. Kenny, and D. A. Horsley, "Epitaxially-encapsulated polysilicon disk resonator gyroscope," 2013 IEEE 26th International Conference on Micro Electro Mechanical Systems (MEMS), pp. 625-628, 2013.
Conference
Chia-Fang Chiang, Andrew B. Graham, Brian J. Lee, Chae Hyuck Ahn, Eldwin J. Ng, Gary J. O'Brien, and Thomas W. Kenny, "Resonant pressure sensor with on-chip temperature and strain sensors for error correction," 2013 IEEE 26th International Conference on Micro Electro Mechanical Systems (MEMS), pp. 45-48, 2013.
Conference
V. A. Hong, S. Yoneoka, M. W. Messana, A. B. Graham, J. C. Salvia, T. T. Branchflower, E. J. Ng, and T. W. Kenny, "High-stress fatigue experiments on single crystal silicon in an oxygen-free environment," Solid-State Sensors, Actuators, and Microsystems Workshop, Hilton Head 2012, pp. 453-456, 2012.
Conference
E.J. Ng, S. Wang, D. Buchman, C.-F. Chiang, T.W. Kenny, H. Muenzel, M. Fuertsch, J. Marek, U.M. Gomez, G. Yama, and G. O’Brien, "Ultra-stable epitaxial polysilicon resonators," Solid-State Sensors, Actuators, and Microsystems Workshop, Hilton Head 2012, pp. 271-274, 2012.
Conference
Chia-Fang Chiang, Andrew B. Graham, Eldwin J. Ng, Chae Hyuck Ahn, Gary J. O'Brien, and Thomas W. Kenny, "A novel, high-resolution resonant thermometer used for temperature compensation of a cofabricated pressure sensor," Solid-State Sensors, Actuators, and Microsystems Workshop, Hilton Head 2012, pp. 54-57, 2012.
Conference
Eldwin J. Ng, Hyung Kyu Lee, Chae Hyuck Ahn, Renata Melamud, and Thomas W. Kenny, "Stability measurements of silicon MEMS resonant thermometers," 2011 IEEE SENSORS Proceedings, pp. 1257-1260, 2011.
Journal
B.W. Soon, E.J. Ng, N. Singh, J.M. Tsai, Y. Qian, C. Lee, "A Bi-stable Electrostatic Silicon Nanofin Relay for Non-volatile Memory Application," JMEMS 22 (5), pp. 1004-1006, 2013.
Journal
B.W. Soon, E.J. Ng, Y. Qian, N. Singh, J.M.-L. Tsai, C. Lee, "A bi-stable nanoelectromechanical non-volatile memory based on van der Waals force", Appl. Phys. Lett. 103, 053122, 2013.
Journal
E.J. Ng, J.B.W. Soon, N. Singh, N. Shen, V.X.H. Leong, T. Myint, V. Pott, J.M. Tsai, "High density vertical silicon NEM switches with CMOS-compatible fabrication", Electronics Letters 47 (13), pp. 759-760, 2011.
Conference
V.X.H. Leong, E.J. Ng, J.B.W. Soon, N. Singh, N. Shen, T. Myint, V. Pott, J.M. Tsai, "Vertical silicon nano-pillar for non-volatile memory," Transducers 2011, pp. 649-652, 2011.