Publications

2024
  • C.-M. Lee, T.-J. Liou, C.-P. Tsai, T.-Y. Chen, and W.-C. Li, “Toward High-Speed CMOS-MEMS Resoswitches,” to be presented in the 37th IEEE Int. Conf. on Micro Electro Mechanical Systems (MEMS’24), Austin, Texas, USA, Jan. 21-25, 2024. (Oral Presentation)
  • K.-W. Lan, I.-F. Chung, C.-P. Tsai, T.-Y. Chen, and W.-C. Li, “TCF-Tailoring Vertically Stepped Structures for Temperature Insensitive CMOS-MEMS Resonators,” to be presented in the 37th IEEE Int. Conf. on Micro Electro Mechanical Systems (MEMS’24), Austin, Texas, USA, Jan. 21-25, 2024. (Oral Presentation)
  • I.-F. Chung, T.-Y. Chen, P.-C. Huang, T.-J. Liou, and W.-C. Li, “CMOS-MEMS Tuned-Mass-Damper Based Physical Unclonable Function (PUF),” to be presented in the 37th IEEE Int. Conf. on Micro Electro Mechanical Systems (MEMS’24), Austin, Texas, USA, Jan. 21-25, 2024.
  • T.-Y. Chen and W.-C. Li, “Bifurcation Generated True Random Numbers in Nonlinear Micromechanical Resonators,” to be presented in the 37th IEEE Int. Conf. on Micro Electro Mechanical Systems (MEMS’24), Austin, Texas, USA, Jan. 21-25, 2024.

2023

2022

2021

2020

2019

2018

Domestic Conference
  • T.-J Liou, C.-M. Lee, and W.-C. Li, “以化學鍍鎳實現高可靠度微機電共振式開關,” 中華民國力學學會第四十七屆全國力學會議 (CTAM 2023), NFU, Yunlin, Nov. 17-18, 2023.
  • C.-Y. Hsu, T.-Y. Chen, and W.-C. Li, “An Ultrasensitive Mode-Localized MEMS Resonant Accelerometer,” in the CACS 2023 International Automatic Control Conference (暨111年控制學門成果發表會), NPU, Penghu, Oct. 26-29, 2023. (Best Student Paper Award Honorable Mention)
  • S.-Y. Lin, P.-Z. Chang, and W.-C. Li, “Machine Tool Dynamic Analysis for Surface Roughness Prediction,” in the CACS 2023 International Automatic Control Conference (暨111年控制學門成果發表會), NPU, Penghu, Oct. 26-29, 2023.
  • P.-H. Hung, P.-Z. Chang, and W.-C. Li, “Accurate Prediction of Machining Time Considering Acceleration/Deceleration Motion Control,” in the CACS 2023 International Automatic Control Conference (暨111年控制學門成果發表會), NPU, Penghu, Oct. 26-29, 2023.
  • K.-W. Lan, and W.-C. Li, “Sensitivity Improvement for Micromechanical Resonator Based Temperature Sensors Based on the Frequency Beating Method,” in the CACS 2023 International Automatic Control Conference (暨111年控制學門成果發表會), NPU, Penghu, Oct. 26-29, 2023.
  • C.-M. Lee, T.-J. Liou, and W.-C. Li, “Sensitivity Enhancement for CC-beam Resoswitches Based on the Curved-beam Gap Narrowing Technique,” in the CACS 2023 International Automatic Control Conference (暨111年控制學門成果發表會), NPU, Penghu, Oct. 26-29, 2023.
  • P.-C. Huang, I-F. Chung, and W.-C. Li, “CMOS-MEMS Tuned-Mass-Damper (TMD) Mode-Localized Electrical Current Sensor,” in the CACS 2023 International Automatic Control Conference (暨111年控制學門成果發表會), NPU, Penghu, Oct. 26-29, 2023.
  • I.-C. Hsieh, T.-Y. Chen, and W.-C. Li, “以弧形結構實現微機電元件之被動式溫度補償,” 中華民國力學學會第四十六屆全國力學會議 (CTAM 2022), NKUST, Kaohsiung, Nov. 18-19, 2022.
  • D.-Y. Wu, C.-P. Tsai, and W.-C. Li, “CMOS-MEMS Resoswitch Embedded Zero Standby Power Wake-up Receivers,” 第19屆自動化科技國際研討會暨110年自動化學門成果發表會 (Automation 2022), Kaohsiung, Nov. 11-13, 2022.
  • C.-P. Tsai and W.-C. Li, “Parametric Study on the Contact Force of MEMS Resoswitches,” in the ICSS 2022 International Conference on Smart Sensors (暨第27屆台灣化學感測器科技研討會/第25屆微奈米系統工程研討會), NCHU, Taichung, Oct. 22-23. 2022. (Distinguished Oral Paper Award)
  • I-C. Hsieh and W.-C. Li, “Highly-Sensitive Temperature Sensors Based on Frequency Beating in CMOS-MEMS Resonators,” in the ICSS 2022 International Conference on Smart Sensors (暨第27屆台灣化學感測器科技研討會/第25屆微奈米系統工程研討會), NCHU, Taichung, Oct. 22-23. 2022. (Distinguished Oral Paper Award)
  • T.-Y. Chen and W.-C. Li, “Helmholtz Resonator Based Acoustic Filter Front-End,” in the ICSS 2022 International Conference on Smart Sensors (暨第27屆台灣化學感測器科技研討會/第25屆微奈米系統工程研討會), NCHU, Taichung, Oct. 22-23. 2022.
  • P.-C. Huang and W.-C. Li, “CMOS-MEMS Tuned-Mass-Damper (TMD) Embedded Voltmeters,” in the ICSS 2022 International Conference on Smart Sensors (暨第27屆台灣化學感測器科技研討會/第25屆微奈米系統工程研討會), NCHU, Taichung, Oct. 22-23. 2022.
  • T.-J. Liou and W.-C. Li, “Process Development for CMOS-MEMS Based TiN Resoswitches,” in the ICSS 2022 International Conference on Smart Sensors (暨第27屆台灣化學感測器科技研討會/第25屆微奈米系統工程研討會), NCHU, Taichung, Oct. 22-23. 2022.
  • Y.-H. Huang and W.-C. Li, “Constructive Utilization of Nonlinearity for Increasing Operating Bandwidth of Micromechanical Resoswitches,” in the ICSS 2022 International Conference on Smart Sensors (暨第27屆台灣化學感測器科技研討會/第25屆微奈米系統工程研討會), NCHU, Taichung, Oct. 22-23. 2022.
  • T.-Y. Chen, C.-P. Tsai, and W.-C. Li, “An Achievement of CMOS-MEMS Temperature Sensor with Ultra High Sensitivity Based on Internal Resonance”, the 2nd Symposium on Nano-Device Circuits and Technologies (SNDCT 2022), Online, May 19-20, 2022. (學生論文競賽入圍)
  • Y.-S. Lin, C.-H. Kuo, P.-Z. Chang, and W.-C. Li, “應用於量測車削刀具切削力之壓電感測器製程整合,” 中華民國力學學會第四十五屆全國力學會議 (CTAM 2021), Online, Nov. 18-19, 2021.
  • T.-Y. Chen, C.-P. Tsai, and W.-C. Li, “Study on High-Order Internal Resonance of a Non-Uniform CMOS-MEMS CC-Beam Resonator,” 第18屆自動化科技國際研討會暨109年自動化學門成果發表會 (Automation 2021), Kinmen, Nov. 11-14, 2021. (學生論文競賽金牌獎)
  • Y. Yi, H.-S. Zheng, and W.-C. Li, “Vibro-Impact Read-Out Scheme for Micromechanical Memory. the ICSS 2021 International Conference on Smart Sensors,” in the ICSS 2021 International Conference on Smart Sensors (暨第26屆台灣化學感測器科技研討會/第24屆微奈米系統工程研討會), NTU, Taipei, Oct. 14-15, 2021. (Honorable Award)
  • C.-P. Tsai and W.-C. Li, “Numerical Investigations of Bifurcation Phenomenon and Motion Behavior for Single-Sided Vibro-Impacting Resonators,” in the ICSS 2021 International Conference on Smart Sensors (暨第26屆台灣化學感測器科技研討會/第24屆微奈米系統工程研討會), NTU, Taipei, Oct. 14-15, 2021.
  • H.-S. Zheng, D.-Y. Wu, and W.-C. Li, “A Negative- Capacitance Equivalent Circuit Model for Micromechanical Clamped-Clamped Beam Resonators,” in the ICSS 2021 International Conference on Smart Sensors (暨第26屆台灣化學感測器科技研討會/第24屆微奈米系統工程研討會), NTU, Taipei, Oct. 14-15, 2021.
  • T.-Y. Chen and W.-C Li, “Modeling of CMOS-MEMS Multiple-Stepped CC-Beam Resonators Using Adomian Decomposition Method,” in the ICSS 2021 International Conference on Smart Sensors (暨第26屆台灣化學感測器科技研討會/第24屆微奈米系統工程研討會), NTU, Taipei, Oct. 14-15, 2021.
  • Y.-S. Lin, C.-H. Kuo, P.-Z. Chang, and W.-C. Li, “Piezoelectric Cutting Force Sensor for Turning Tools Based on a Through-Screw Via,” in the ICSS 2021 International Conference on Smart Sensors (暨第26屆台灣化學感測器科技研討會/第24屆微奈米系統工程研討會), NTU, Taipei, Oct. 14-15, 2021.
  • Y.-S. Lin, P.-Z. Chang, and W.-C. Li, “應用於車削刀具壓電感測器成形之雷射製程整合技術,” 中華民國力學學會第四十四屆全國力學會議 (CTAM 2020), NIU, Yilan, Nov. 26-27, 2020.
  • C.-P. Tsai and W.-C. Li, “Experimental Study on Frequency Stability of Micromechanical Resonators Operating in the Nonlinear Tapping Mode,” in the ICSS 2020 International Conference on Smart Sensors (暨第25屆台灣化學感測器科技研討會/第23屆微奈米系統工程研討會), NSYSU, Kaohsiung, Oct. 19-20, 2020. (Best Oral Paper Award)
  • S.-Y. Liu and W.-C. Li, “Contour-Plot Design Methodology for MEMS Capacitive Accelerometers,” in the ICSS 2020 International Conference on Smart Sensors (暨第25屆台灣化學感測器科技研討會/第23屆微奈米系統工程研討會), NSYSU, Kaohsiung, Oct. 19-20, 2020. (Excellent Poster Paper Award)
  • Y. Yi and W.-C. Li, “Bias-Voltage Reduction of CMOS-MEMS Resoswitches via Substrate Biasing,” in the ICSS 2020 International Conference on Smart Sensors (暨第25屆台灣化學感測器科技研討會/第23屆微奈米系統工程研討會), NSYSU, Kaohsiung, Oct. 19-20, 2020. (Best Poster Paper Award)
  • C.-E. Hsu and W.-C. Li, “Wet-Release Yield Improvement of CMOS-MEMS Metal Resonators via Diffusion Control,” in the ICSS 2020 International Conference on Smart Sensors (暨第25屆台灣化學感測器科技研討會/第23屆微奈米系統工程研討會), NSYSU, Kaohsiung, Oct. 19-20, 2020.
  • H.-W. Wang and W.-C. Li, “Q-Factor Enhancement and Frequency Trimming of Comb-Driven Folded-Beam Micromechanical Resonators Using Atmosphere-Pressure Plasma Jet,” in the ICSS 2020 International Conference on Smart Sensors (暨第25屆台灣化學感測器科技研討會/第23屆微奈米系統工程研討會), NSYSU, Kaohsiung, Oct. 19-20, 2020.
  • Y.-S. Lin, P.-Z. Chang, and W.-C. Li, “Process Integration of Piezoelectric Force Sensors for Real-Time Turning Tool Cutting Force Monitoring,” in the ICSS 2020 International Conference on Smart Sensors (暨第25屆台灣化學感測器科技研討會/第23屆微奈米系統工程研討會), NSYSU, Kaohsiung, Oct. 19-20, 2020.
  • J.-R. Liu and W.-C. Li, “Theoretical modeling of a temperature-insensitive CMOS-MEMS free-free beam resonator,” in the 21st Nano Engineering and Microsystem Technology Conference (第21屆奈米工程暨微系統技術研討會), Shenkeng, Taipei, Jun. 1-2, 2018. (壁報佳作獎)
  • C.-P. Tsai, W.-R. Du, and W.-C. Li, “Nonlinear contact dynamics modeling for comb-driven folded-beam micromechanical resoswitches,” in the 21st Nano Engineering and Microsystem Technology Conference (第21屆奈米工程暨微系統技術研討會), Shenkeng, Taipei, Jun. 1-2, 2018. (最佳論文獎)
  • J.-R. Liu, S.-C. Lu, C.-P. Tsai, and W.-C. Li, “CMOS-MEMS-based arrayed-CC-Beam displacement amplifiers,” in the 3rd Association of Computational Mechanics Taiwan (ACMT) Conference (第3屆台灣計算力學會議), Tainan, Oct. 19-20, 2017.

Prior to 2017
  • W.-C. Li, Z. Ren, and C. T.-C. Nguyen, “A micromechanical high-Q elliptic disk displacement amplifier,” in the 29th IEEE Int. Conf. on Micro Electro Mechanical Systems (MEMS’16), Shanghai, China, Jan. 24-28, 2016.
  • R. Liu, J. Naghsh Nilchi, W.-C. Li, and C. T.-C. Nguyen, “Soft-impacting micromechanical resoswitch zero-quiescent power AM receiver,” in the 29th IEEE Int. Conf. on Micro Electro Mechanical Systems (MEMS’16), Shanghai, China, Jan. 24-28, 2016.
  • W.-C. Li, Y. Lin, and C. T.-C. Nguyen, “Metal micromechanical filter-power amplifier utilizing a displacement-amplifying resonant switch,” in the 17th Int. Conf. on Solid-State Sensors, Actuators, & Microsystems (TRANSDUCERS’13), Barcelona, Spain, Jun. 16-20, 2013, pp. 2469-2472.
  • Y.-J. Lai, W.-C. Li, C.-M. Lin, V. V. Felmetsger, D. G. Senesky, and A. P. Pisano, “MEMS piezoelectric energy harvesters for harsh environment sensing,” in Proc. the 9th Intl. Workshop on Structural Health Monitoring (IWSHM’13), Stanford, CA, Sep. 10-12, 2013, pp. 2275-2282. (Invited)
  • Y. Lin, R. Liu, W.-C. Li, M. Akgul, and C. T.-C. Nguyen, “A micromechanical resonant charge pump,” in the 17th Int. Conf. on Solid-State Sensors, Actuators, & Microsystems (TRANSDUCERS’13), Barcelona, Spain, Jun. 16-20, 2013, pp. 1727-1730. (Best Paper Award Winner)
  • Y.-J. Lai, W.-C. Li, C.-M. Lin, V. V. Felmetsger, and A. P. Pisano, “High-temperature stable piezoelectric aluminum nitride energy harvesters utilizing elastically supported diaphragms,” in the 17th Int. Conf. on Solid-State Sensors, Actuators, & Microsystems (TRANSDUCERS’13), Barcelona, Spain, Jun. 16-20, 2013, pp. 2268-2271. (Best Poster Award Winner)
  • Y. Lin, W.-C. Li, and C. T.-C. Nguyen, “A MEMS-based charge pump,” in Tech. Dig. 2013 Symp. on VLSI Technology (VLSIT’13), Kyoto, Japan, Jun. 11-13, 2013, pp. T148-149.
  • L. Wu, M. Akgul, W.-C. Li, Y. Lin, Z. Ren, T. O. Rocheleau, C. T.-C. Nguyen, “Micromechanical disk array for enhanced frequency stability against bias voltage fluctuations,” in Proc. 2013 Joint European Frequency and Time Forum & International Frequency Control Symposium (EFTF/IFCS), Prague, Czech Republic, Jul. 21-25, 2013, pp. 547 – 550.
  • Y.-J. Lai, W.-C. Li, C.-M. Lin, V. V. Felmetsger, D. G. Senesky, and A. P. Pisano, “SiC/AlN piezoelectric energy harvesters for pulsed pressure sources in harsh environment applications,” in Tech. Dig. 2012 Solid-State Sensor, Actuator, and Microsystems Workshop (Hilton Head’12), Hilton Head, SC, Jun. 3-7, 2012, pp. 505-508.
  • Y. Lin, T. Riekkinen, W.-C. Li, E. Alon, and C. T.-C. Nguyen, “A metal micromechanical resonant switch for on-chip power applications,” in Tech. Digest 2012 IEEE Int. Electron Devices Mtg. (IEDM’11), Washington, DC, Dec. 5-7, 2011, pp. 162-165.
  • L. Wu, M. Akgul, Z. Ren, Y. Lin, W.-C. Li, and C. T.-C. Nguyen, “Hollow stems for higher micromechanical disk resonator quality factor,” in Proc. 2011 IEEE Int. Ultrasonics Symposium (IUS’11), Orlando, FL, Oct. 18-21, 2011, pp. 1964-1967.
  • W.-C. Li, Y. Jiang, R. A. Schneider, H. G. Barrow, L. Lin, and C.T.-C. Nguyen, “Polysilicon-filled carbon nanotube grass structural material for micromechanical resonators,” in Tech. Dig. 24th IEEE Int. Conf. on Micro Electro Mechanical Systems (MEMS’11), Cancun, Mexico, Jan. 23-27, 2011, pp. 477-480.
  • B. Kim, M. Akgul, Y. Lin, W.-C. Li, Z. Ren, and C. T.-C. Nguyen, “Acceleration sensitivity of small-gap capacitive micromechanical resonator oscillators,” in Proc. 2010 IEEE Int. Frequency Control Symp. (FCS’10), Newport Beach, CA, Jun. 1-4, 2010, pp. 273-278.
  • W.-C. Li, Y. Lin, B. Kim, Z. Ren, and C. T.-C. Nguyen, “Quality factor enhancement in micromechanical resonators at cryogenic temperatures,” in the 15th Int. Conf. on Solid-State Sensors, Actuators, & Microsystems (TRANSDUCERS’09), Denver, CO, Jun. 21-25, 2009, pp. 1445-1448.
  • M. Akgul, B. Kim, L.-W. Hung, Y. Lin, W.-C. Li, W.-L. Huang, I. Gurin, A. Borna, and C. T.-C. Nguyen, “Oscillator far-from-carrier phase noise reduction via nano-scale gap tuning of micromechanical resonators,” in the 15th Int. Conf. on Solid-State Sensors, Actuators, & Microsystems (TRANSDUCERS’09), Denver, CO, Jun. 21-25, 2009, pp. 798-801.
  • Y. Lin, W.-C. Li, I. Gurin, S.-S. Li, Y.-W. Lin, Z. Ren, B. Kim, and C. T.-C. Nguyen, “Digitally-specified micromechanical displacement amplifiers,” in the 15th Int. Conf. on Solid-State Sensors, Actuators, & Microsystems (TRANSDUCERS’09), Denver, CO, Jun. 21-25, 2009, pp. 781-784.
  • Y. Lin, W.-C. Li, B. Kim, Y.-W. Lin, Z. Ren, and C. T.-C. Nguyen, “Enhancement of micromechanical resonator manufacturing precision via mechanically-coupled arraying,” in Proc. 2009 IEEE Int. Frequency Control Symp. (FCS’09), Besancon, France, Apr. 20-24, 2009, pp. 58-63.
  • B. Kim, Y. Lin, W.-L. Huang, M. Akgul, W.-C. Li, Z. Ren, and C. T.-C. Nguyen, “Micromechanical resonant displacement gain stages,” in Tech. Dig. 22nd IEEE Int. Conf. on Micro Electro Mechanical Systems (MEMS’09), Sorrento, Italy, Jan. 25-29, 2009, pp. 19-22.
  • Y. Lin, W.-C. Li, Z. Ren, and C. T.-C. Nguyen, “The micromechanical resonant switch (“Resoswitch”),” in Tech. Dig. 2008 Solid-State Sensor, Actuator, and Microsystems Workshop (Hilton Head’08), Hilton Head, SC, Jun. 1-5, 2008, pp. 40-43.
  • Y. Lin, W.-C. Li, Z. Ren, and C. T.-C. Nguyen, “A resonance dynamical approach to faster, more reliable micromechanical switches,” in Proc. 2008 IEEE Int. Frequency Control Symp. (FCS’08), Honolulu, Hawaii, May 19-21, 2008, pp. 640-645.
  • J.-L Cheng, C.-S. Wang, W.-C. Li, and C.-K. Wang, “A 1.1-V CMOS frequency synthesizer with pass-transistor-logic prescaler for U-NII band system,” in Proc. 2008 Int. Symp. on VLSI Design Automation and Test (VLSI-DAT’08), Hsinchu, Taiwan, Apr. 23-25, 2008, pp. 117-120.
  • C.-S. Wang, W.-C. Li, C.-K. Wang, H.-Y. Shih, and T.-Y. Yang, “A 3–10 GHz full-band single VCO agile switching frequency generator for MB-OFDM UWB,” in Proc. 2007 IEEE Asian Solid-State Circuits Conference (ASSCC’07), Jeju, Korea, Nov. 12-14, 2007, pp. 75-78.
  • W.-C. Li, C.-S. Wang, and C.-K. Wang, “A 2.4-GHz/3.5-GHz/5-GHz multi-band LNA with complementary switched capacitor multi-tap inductor in 0.18 μm CMOS,” in Proc. 2006 Int. Symp. on VLSI Design Automation and Test (VLSI-DAT’06), Hsinchu, Taiwan, Apr. 26-28, 2006, pp. 1-4.
  • W.-C. Li, C.-S. Wang, and C.-K. Wang, “A multi-band CMOS LNA using complimentary switched capacitor multi-tap inductor for WMAN and WLAN applications,” in 2005 IEEJ Int. Analog VLSI Workshop, Oct. 19-21, 2005.
  • C.-S. Wang, W.-C. Li, and C.-K. Wang, “A multi-band multi-standard RF front-end for IEEE 802.16a and IEEE 802.11a/b/g applications,” in Proc. IEEE Int. Symp. on Circuits and Systems (ISCAS’05), Kobe, Japan, May 23-26, 2005, pp. 3974-3977.

Patents
  • W.-C. Li, C.-P. Tsai, H.-W. Wang, “Device and method for monitoring surface condition of contact surface of detected object,” US Patent Application, 17/113,109, Dec. 7th, 2020.
  • C. T.-C. Nguyen, W.-C. Li, R. Liu, “Zero-quiescent power receiver,” US10257002 B2, April 9th, 2019.
  • C. T.-C. Nguyen, Y. Lin, W.-C. Li, B. Kim, “Microelectromechanical system (MEMS) resonant switches and applications for power converters and amplifiers,” US9077060 B2, Jul. 7th, 2015.