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
Clifton L. Roozeboom, Bridget E. Hill, Vu Anh Hong, Chae Hyuck Ahn, Eldwin J. Ng, Yushi Yang, Thomas W. Kenny, Matthew A. Hopcroft, and Beth L. Pruitt, "Multifunctional Integrated Sensors for Multiparameter Monitoring Applications," Journal of Microelectromechanical Systems, Sep 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, Aug 2014.
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, Jul 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, Jun 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, Jun 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, Jun 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, Jun 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, Jun 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, Jun 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, Mar 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, Jan 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, Jan 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, Jan 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, Jan 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, Jan 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, Jan 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, Jan 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, Nov 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, Oct 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, Jul 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, Jun 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, Jun 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, Jun 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, Jun 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, Jun 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, Jun 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, Jun 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, Mar 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, Jan 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, Jan 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, Jun 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, Jun 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, Jun 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, Oct 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.