For details about the citations, please check the Google Scholar page

Book and Book Chapter

1. D. Shi, R. Martins, P.-I. Mak, K.-M. Lei*, Resistor-Based Temperature Sensors in Deep-Submicron CMOS Technology, to appear. 
2. S. Fan, Q. Zhou, K.-M. Lei*, R. Martins, P.-I. Mak, CMOS-based Portable NMR/MRI Microsystems, Cham, Switzerland: Springer, 2025. 
3. K.-M. Lei, P.-I. Mak, R. P. Martins, "Ultra-Low-Voltage Clock References," in Analog and Mixed-Signal Circuits in Nanoscale CMOS, R. P. Martins, P.-I. Mak, Cham, Switzerland: Springer International Publishing, 2023, pp. 91-127.
4. K.-M. Lei, N. Sun, P.-I. Mak, R. Martins, ​D. Ham, "Micro-NMR on CMOS for Biomolecular Sensing," in CMOS Circuits for Biological Sensing and Processing, S. Mitra, D. Cummings, Ed., Cham, Switzerland: Springer, 2018, pp. 101-132. 
5. K.-M. Lei, P.-I. Mak, ​M.-K. Law, R. P. Martins, Handheld Total Chemical and Biological Analysis Systems:Bridging NMR, Digital Microfluidics, and Semiconductors, Cham, Switzerland: Springer, 2018. 

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Journal Articles

1. ​...K.-M. Lei, "Drug screening IC," submitted. 
2. B. Cao, Q. Zhou, S. Fan, R. Martins, P.-I. Mak, K.-M. Lei*, "Positioning IC," submitted.
3. Q. Zhou, S. Fan, Y. Liu, R. Martins, P.-I. Mak, Y. Jia, K.-M. Lei*, "A Chip-based Miniature MRI Platform with Integrated Frontend Probe for In-Situ 3D Cell Culture Monitoring," IEEE Trans. Biomedical Circuits Syst., accepted, 10.1109/TBCAS.2025.3627980​. [Invited paper]
4. ​H. Li, R. Martins, P.-I. Mak, K.-M. Lei*, "A 0.4-V 32-kHz Pulse-Injection Temperature-Compensated Crystal Oscillator with Sub-Cycle CL Modulation and DLL-Reused Temperature Sensor​," IEEE J. Solid-State Circuits (Early Access), 10.1109/JSSC.2025.3620824.
5. D. Shi, R. Martins, P.-I. Mak, K.-M. Lei*, "A 4,100 µm2 Wire-Metal-Based Temperature Sensor with a Fractional-Discharge FLL and a V2T Converter with ±0.2 °C Inaccuracy (3σ) from −40 to 125 °C and 45 fJ·K2 Resolution FoM in 28-nm CMOS,"  IEEE J. Solid-State Circuits, accepted, doi: 10.1109/JSSC.2025.3603916
6. M. H.-W. Loo, H. Ramiah, D. Shi, C. C. Lim, Rui P. Martins, P.-I. Mak, K.-M. Lei, "A 0.5-V Ultra-Low Voltage Relaxation Oscillator with Identical Asymmetric Swing-Boosted RC Network and Feedback-based Amplifier Achieving 390-ppm RMS Period Jitter for Self-Powered Devices," Trans. Circuits Syst. I – Regular Papers, accepted, doi: 10.1109/TCSI.2025.3604129.
7. W. Hui, K.-M. Lei, et al., "Identification and Drug Screening of Single Cells from Human Tumors on Semiconductor Chip for Cancer Precision Medicine," Adv. Sci., vol. 12, no. 28, pp. 2503131, Jul. 2025. 
8. S. Fan, Q. Zhou, K.-M. Lei*, R. Martins, P.-I. Mak, "A Miniature Multi-Nuclei NMR/MRI Platform with a High-Voltage SOI ASIC," IEEE J. Solid-State Circuits, vol. 60, no. 6, pp. 2013-2024, Jun. 2025.
9. R. Luo, K.-M. Lei*, H. Zou, R. P. Martins, P.-I. Mak, Single-XO Dual-Output Frequency Reference with Adaptive Successive-Approximation-Based RTC Calibration," IEEE Trans. Circuits Syst. II - Express Briefs, Vol. 72, no. 5, pp. 688-692, May 2025.
10. D. Shi, K.-M. Lei*, R. Martins, P.-I. Mak, "A 0.35-to-0.5-V 0.0136-mm2 12-MHz Digital Frequency-Locked Loop with 1.06%/V Line Sensitivity in 65-nm CMOS," IEEE Trans. Circuits Syst. II - Express Briefs, vol. 72, no. 3, pp. 459-463, Mar. 2025.  
11. R. Luo, K.-M. Lei*, H. Zou, R. P. Martins, P.-I. Mak, “A 0.5-V 6.14-μW Trimming-Free Single-XO Dual-Output Frequency Reference with [5.1-nJ, 120-μs] XO Startup and [8.1-nJ, 200-μs] Successive-Approximation-Based RTC Calibration”  IEEE J. Solid-State Circuits, vol. 60, no . 4, pp. 1437-1448, Apr. 2025.
12. L. Lin, W.-H. Yu, H. Shao, J. Yin, K.-M. Lei, R. Martins, P.-I. Mak, "A Battery-Free Crystal-Less BLE Transmitter Tag With Fully-Integrated RF Harvesting and Multitag TDD and FDD Broadcasting" IEEE Trans. Microw. Theory Techn., vol. 73, no. 3, pp. 1837-1847, Mar. 2025.
13. ... K.-M. Lei, ... "A 16-MHz Crystal Oscillator with 17.5-μs Startup Time under 104-ppm-∆F Injection Using Automatic Phase-Error Correction," IEEE J. Solid-State Circuits,  vol. 59, no. 11, pp. 3780, Nov. 2024. 
14. Q. Zhou, S. Fan, K.-M. Lei*, D. Ham, R. P. Martins, P.-I. Mak, "Miniature Magnetic Resonance Imaging System for in Situ Monitoring of Bacterial Growth and Biofilm Formation," IEEE Trans. Biomedical Circuits Syst., vol. 18, no. 5, pp. 990-1000, Oct. 2024. 
15. B. Cao, K.-M. Lei*, H. Zou, R. P. Martins, P.-I. Mak, "Exploring the Performance of Hall Sensor with Substrate Bias Modulation in SOI Process," IEEE Sensors J., vol. 24, no. 17, pp. 27365 - 27372, Sep. 2024.  
16. A. Rahmani, H. Ramiah, K.-M. Lei, C. C. Lim, N. S. Lai, P.-I. Mak, Rui P. Martins, "A Fast Startup 38.4-MHz Crystal Oscillator Achieving 99-nJ Startup Energy with Adaptive Chirping," IEEE Access, vol. 12, pp. 102202 - 102211, Jul. 2024.  
17. H. Li, K.-M. Lei*, R. P. Martins, P.-I. Mak, "A 12/13.56MHz Crystal Oscillator with Binary-Search-Assisted Two-Step Injection Achieving 5.0nJ Startup Energy and 45.8μs Startup Time," IEEE J. Solid-State Circuits, vol.59, no. 2, pp. 464-475, Feb. 2024.
18. ...  K.-M. Lei, ​..., "CMOS IC for the quantum information sciences," IEEE Trans. Quantum Eng., vol. 4, pp. 1-30, 2023, Art no. 5100230, doi: 10.1109/TQE.2023.3290593.
19. C. Che, K.-M. Lei*, R. P. Martins, P.-I. Mak, "A 0.4-V 8,400-µm2 Voltage Reference in 65-nm CMOS Exploiting Well-Proximity Effect," IEEE Trans. Circuits Syst. II - Express Briefs, vol. 70, no. 10, pp. 3822-3826, Oct. 2023. 
20. S. Dan, K.-M. Lei*, R. P. Martins, P.-I. Mak, "A 0.4-V 0.0294-mm2 Resistor-Based Temperature Sensor Achieving ±0.24 °C p2p Inaccuracy From −40 °C to 125 °C and 385 fJ·K2 Resolution FoM in 65-nm CMOS", IEEE J. Solid-State Circuits, vol. 58, no. 9, pp. 2543-2553, Sep. 2023. 
21. H. Zou, K.-M. Lei*, R. P. Martins, P.-I. Mak, "A CMOS Hall Sensors Array with Integrated Readout Circuit Resilient to Local Magnetic Interference from Current-Carrying Traces," IEEE Sensors J., vol. 23, no. 14, pp. 16145-16153, Jul. 2023.
22. S. Fan, Q. Zhou, K.-M. Lei, P.-I. Mak, R. P. Martins, "A Miniaturized 3-D-MRI Scanner Featuring an HV-SOI ASIC and Achieving a 10 × 8 × 8 mm3 Field of View," IEEE J. Solid-State Circuits, vol. 58, no. 7, pp. 2028-2039, Jul. 2023.
23. D. Krüger, A. Zhang, H. Hinton, V. M. Arnal, Y.-Q. Song, Y. Tang, K.-M. Lei, J. Anders, D. Ham, "A Portable CMOS-based Spin Resonance System for High-Resolution Spectroscopy and Imaging" IEEE J. Solid-State Circuits, vol. 58, no. 7, pp. 1838-1849, Jul. 2023.
24. L. Lin, K.-M. Lei, P.-I. Mak, R. P. Martins, “An Ultra-Low-Voltage Single-Crystal Oscillator-Timer (XO-Timer) Delivering 16-MHz and 32.258-kHz Clocks for Sub-0.5 V Energy-Harvesting BLE Radios in 28-nm CMOS,” IEEE Open J. Circuits Syst., vol. 4, pp. 126 - 138, Mar. 2023.
25. S. Fan, Q. Zhou, K.-M. Lei, P.-I. Mak, R. P. Martins, “Miniaturization of a Nuclear Magnetic Resonance System: Architecture and Design Considerations of Transceiver Integrated Circuits,” IEEE Trans. Circuits Syst. I – Regular Papers, vol. 69, no. 8, pp. 3049-3060, Aug. 2022. 
26. ... K.-M. Lei, ​..., “Trending IC design directions in 2022,” J. Semicond., vol. 43, no. 7, 071401, Jul. 2022. 
27. M. Loo, H. Ramiah, K.-M. Lei, C. C. Lim, N. S. Lai, P.-I. Mak, R. P. Martins, “Fully-Integrated Timers for Ultra-Low-Power Internet-of-Things Nodes–Fundamentals and Design Techniques,” IEEE Access, vol. 10, pp. 65936 – 65950, Jun. 2022.
28. K.-M. Lei, P.-I. Mak, R. P. Martins, "A 0.35-V 5,200-µm2 2.1-MHz Temperature-Resilient Relaxation Oscillator with 667fJ/cycle Energy Efficiency Using an Asymmetric Swing-Boosted RC Network and a Dual-Path Comparator," ​ IEEE J. Solid-State Circuits, vol. 56, no. 9, pp. 2701 - 2710, Sep. 2021. 
29. K.-M. Lei, P.-I. Mak, R. P. Martins, "Startup time and energy-reduction techniques for crystal oscillators in the IoT era," IEEE Transactions on Circuits and System II - Express Briefs, vol. 68, no. 1, pp. 30-35, Jan. 2021. 
30. K.-M. Lei, D. Ha, Y.-Q. Song, R. M. Westervelt, R. P. Martins, P.-I. Mak, D. Ham, "Portable NMR with parallelism," Analytical Chemistry, vol. 92, no. 2, pp. 2112-2120, Jan. 2020. 
31. A. Dupré*, K.-M. Lei*, P.-I. Mak, R. P. Martins, W. K. Peng, "Micro- and nanofabrication NMR technologies for point-of-care medical applications – A review," Microelectronic Engineering, vol. 209, pp. 66-74, Mar. 2019. 
32. K.-M. Lei, P.-I. Mak, M.-K. Law, R. P. Martins, "A regulation-free sub-0.5-V 16-/24-MHz crystal oscillator with 14.2-nJ startup energy and 31.8-μW steady-state power," IEEE J. Solid-State Circuits, vol. 53, no. 9, pp. 2624-2635, Sep. 2018. 
33. K.-M. Lei, H. Heidari, P.-I. Mak, M.-K. Law, F. Maloberti, R. P. Martins, “A handheld high-sensitivity micro-NMR CMOS platform with B-Field stabilization for multi-type biological/chemical assays,” IEEE J. Solid-State Circuits, vol. 52, no. 1, pp. 284-297, Jan. 2017.  
34. K.-M. Lei, P.-I. Mak, M.-K. Law, R. P. Martins, “A μNMR CMOS transceiver using a Butterfly-coil input for integration with a digital microfluidic device inside a portable magnet,” IEEE J. Solid-State Circuits, vol. 51, no. 10, pp. 2274-2286, Nov. 2016. 
35. K.-M. Lei, P.-I. Mak, M.-K. Law, R. P. Martins, “CMOS biosensors for in vitro diagnosis - transducing mechanisms and applications,” Lab Chip, vol. 16, no. 19, pp. 3664-3681, Oct. 2016. 
36. K.-M. Lei, P.-I. Mak, M.-K. Law, R. P. Martins, “A palm-size μNMR relaxometer using a digital microfluidic device and a semiconductor transceiver for chemical/biological diagnosis,” Analyst, vol. 140, no.15, pp. 5129-5137, Aug. 2015. 
37. K.-M. Lei, P.-I. Mak, M.-K. Law, R. P. Martins, “NMR-DMF: a modular nuclear magnetic resonance–digital microfluidic system for biological assays,” Analyst, vol. 139, no.23, pp. 6204-6213, Dec. 2014. 
38. K.-M. Lei, P.-I. Mak, R. P. Martins, "Systematic analysis and cancellation of kickback noise in a dynamic latched comparator," Analog Integr. Circuits Signal Process., vol. 77, no. 2, pp, 277-284, Nov. 2013.  

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Conference Proceedings/Presentations

1. H. Li, P.-I. Mak, R. P. Martins, K.-M. Lei* "Low-power XO," submitted.
2. D. Shi, R. P. Martins, P.-I. Mak, K.-M. Lei*, "Analysis of the Theoretical Resolution FoM for Resistor-Based Temperature Sensors" IEEE International Conference on Integrated Circuits, Technologies and Applications (ICTA) 2025, pp. 248-249, Oct. 2025.
3. M. Wang, H. Zhou, R. P. Martins, P.-I. Mak, K.-M. Lei*, "A CMOS SOI 180nm Sub-ranging Bandgap Reference with 4.5ppm/°C TC across −40 to 175°C," IEEE Asia Pacific Conference on Circuits and Systems (APCCAS) 2025, pp. 1-5, Oct. 2025.
4. C. Che, Y. Jiang, X. Guo, K.-M. Lei*, R. Martins, P.-I. Mak, "A Linear-Regression-Assisted Trimming Scheme for CMOS Voltage Reference," in IEEE Int. Symp. Circuits Syst. (ISCAS) 2025, pp. 1-5, May 2025. 
5. K. Yu, M. Wang, K.-M. Lei*, R. Martins, P.-I. Mak, "A 0.4V Relaxation Oscillator Featuring Double Capacitor-Charging Headroom in CMOS 65nm," in IEEE Int. Symp. Circuits Syst. (ISCAS) 2025, pp. 1-5, May 2025. 
6. Q. Zhou, S. Fan, K.-M. Lei*, R. P. Martins, P.-I. Mak, "A Chip-Based Miniature MRI Platform with Integrated PDMS-PCB Coil Frontend for Microlitre-Volume Sample Analysis," in IEEE Int. Symp. Circuits Syst. (ISCAS) 2025, pp. 1-5, May 2025. 
7. D. Shi, K.-M. Lei*, R. P. Martins, P.-I. Mak, "A 4,100µm2 Wire-Metal-Based Temperature Sensor with a Fractional-Discharge FLL and a Time-Domain Amplifier with ±0.2°C Inaccuracy (3σ) from −40 to 125°C and 45fJ·K2 Resolution FoM in 28nm CMOS," IEEE Int. Solid-State Circuits Conf. (ISSCC) 2025, pp. 478-479, Feb. 2025.
8. W. Hui, R. Shen, Y. Liu, K.-M. Lei, P.-I. Mak, R. P. Martins, Y. Jia, “Tumor diagnosis on electric impedance integrated circuit (IC) chip with single-cell resolution,” in 28th Int. Conf. Miniaturized Syst. Chem. Life Sci. (MicroTAS), Oct. 2024.
9. S. Fan, Q. Zhou, K.-M. Lei*, P.-I. Mak, R. P. Martins, “ A Miniaturized MRI Scanner Featuring a High-Voltage SOI ASIC for Non-Invasive Object Reconstruction and Flow Analysis,” IEEE Biomedical Circuits and Systems Conf. (BioCAS) 2024, pp. 1-5, Oct. 2024.
10. W. Hui, R. Shen, P.-I. Mak, R. P. Martins, K.-M. Lei*, Y. Jia, “Single-Cell Electric Impedance Sensor Based on Integrated Circuit Chip,” IEEE Biosensors 2024, pp. 1-4, Jul. 2024. [Best paper award]
11. S. Fan, Q. Zhou, K.-M. Lei*, P.-I. Mak, R. P. Martins,  "A Miniature Multi-Nuclei NMR/MRI Platform with a High-Voltage SOI ASIC Achieving a 134.4dB Image SNR with a 173×250×103μm3 Resolution," IEEE Int. Solid-State Circuits Conf. (ISSCC) 2024, pp. 316-317, Feb. 2024.
12. R. Luo, K.-M. Lei*, P.-I. Mak, R. P. Martins, "A 0.5V 6.14μW Trimming-Free Single-XO Dual-Output Frequency Reference with [5.1nJ, 120μs] XO Startup and [8.1nJ, 200μs] Successive-Approximation-Based RTC Calibration," IEEE Int. Solid-State Circuits Conf. (ISSCC) 2024, pp.58-59, Feb. 2024 [Selected Demo].
13. S. Dan, K.-M. Lei*, R. P. Martins, P.-I. Mak, "Simple-Logic Comparator-Offset Mitigation Technique for Resistor-Based Temperature Sensor in DFLL," IEEE International Conference on Integrated Circuits, Technologies and Applications (ICTA), pp. 47-48, Oct. 2023.
14. W. Hui, A. Lyu, Y. Liu, P.-I. Mak, R. P. Martins, K.-M. Lei, Y. Jia, "Single-Cell Electric Impedance Sensor Based On Integrated Circuit Chip," in 27th Int. Conf. Miniaturized Syst. Chem. Life Sci. (MicroTAS), oral presentation, Oct. 2023.
15. Q. Zhou, S. Fan, D. Ham, K.-M. Lei*, P.-I. Mak, R. P. Martins, "Real-Time In-Situ Bacterial Growth Monitoring Using Miniaturized MRI System," in 27th Int. Conf. Miniaturized Syst. Chem. Life Sci. (MicroTAS), oral presentation, Oct. 2023.
16. S. Fan, Q. Zhou, K.-M. Lei*, P.-I. Mak, R. P. Martins, "A Miniaturized 3-D-MRI Scanner Featuring A High-Voltage SOI ASIC For Noninvasive Object Reconstruction And Flow Analysis," in 27th Int. Conf. Miniaturized Syst. Chem. Life Sci. (MicroTAS), poster, Oct. 2023.
17. H. Li, K.-M. Lei*, P.-I. Mak, R. P. Martins, "A 12/13.56MHz Crystal Oscillator with Binary-Search-Assisted Two-Step Injection Achieving 5.0nJ Startup Energy and 45.8μs Startup Time," in IEEE Int. Solid-State Circuits Conf. (ISSCC) Dig. Tech. Papers, pp. 64-65, Feb. 2023. [Selected Demo]
18. L. Lin, K.-M. Lei, P.-I. Mak, R. P. Martins, “A sub-0.5V Crystal Oscillator-Timer (XO-Timer) Combining 16MHz Reference and 32kHz Sleep Timer with a Single Crystal for Energy-Harvesting Radios in 28nm CMOS,” in IEEE Proc. Asian Solid-State Circ. Conf., Nov. 2022, pp. 1-3. 
19. D. Krüger, A. Zhang, H. Hinton, V. M. Arnal, Y.-Q. Song, Y. Tang, K.-M. Lei, J. Anders, D. Ham, “A Portable CMOS-based MRI System with 67×67×83 μm3 Image Resolution” in IEEE Proc. European Solid-State Circ. Conf., 2022, pp. 225 - 228. 
20. K.-M. Lei, P.-I. Mak, R. P. Martins, "A 0.45-V 3.3-µW Resistor-Based Temperature Sensor Achieving 10mK Resolution in 65-nm CMOS," IEEE International Conference on Integrated Circuits, Technologies and Applications (ICTA), Nov. 2021. 
21. K.-M. Lei, P.-I. Mak, R. P. Martins, "A 0.4 V 6.4 μW 3.3 MHz CMOS bootstrapped relaxation oscillator with ±0.71% frequency deviation over −30 to 100° C for wearable and sensing applications," in IEEE Int. Symp. Circuits Syst. (ISCAS), pp. 1-5, May 2018. 
22. K.-M. Lei, P.-I. Mak, M.-K. Law,  R. P. Martins, "A regulation-free sub-0.5V 16/24MHz crystal oscillator for energy-harvesting BLE radios with 14.2nJ startup energy and 31.8μW steady-state power," in IEEE Int. Solid-State Circuits Conf. (ISSCC) Dig. Tech. Papers, pp. 52-53, Feb. 2018.​ [Selected Demo] ​
23. K.-M. Lei, P.-I. Mak, R. P. Martins, "A 0.4 V 4.8 μW 16MHz CMOS crystal oscillator achieving 74-fold startup-time reduction using momentary detuning," in IEEE Int. Symp. Circuits Syst. (ISCAS), pp. 2791-2794, May 2017. 
24. K.-M. Lei, H. Heidari, P.-I. Mak, M.-K. Law, R.P. Martins, F. Maloberti, “A handheld 50pM-sensitivity micro-NMR CMOS platform with B-field stabilization for multi-type biological/chemical assays,” in IEEE Int. Solid-State Circuits Conf. (ISSCC) Dig. Tech. Papers, pp. 474-475, Feb. 2016.​ [Silkroad Award] [Selected Demo] [ISSCC 2016 Technical Highlight] 
25. K.-M. Lei, P.-I. Mak, M.-K. Law, R. P. Martins, “A μNMR CMOS transceiver using a Butterfly-coil input for integration with a digital microfluidic device inside a portable magnet,” in Proc. IEEE Asian Solid-State Circuits Conf. (A-SSCC), pp. 1-4, Nov. 2015. [Student Design Contest] [Distinguished Design Award] 
26. K.-M. Lei, P.-I. Mak, M.-K. Law, R. P. Martins, “A thermal-insensitive all-electronic modular µNMR relaxometer with a 2D digital microfluidic chip for sample management,” in Proc. 19th Int. Conf. Miniaturized Syst. Chem. Life Sci. (MicroTAS), pp. 302-304, Oct. 2015. [CBMS Student/Young Researcher Grant] [Oral Presentation]
27. K.-M. Lei, H. Heidari, P.-I. Mak, M.-K. Law, F. Maloberti, “Exploring the noise limits of fully-differential micro-watt transimpedance amplifiers for Sub-pA/√Hz sensitivity,” in 11th Conf. Ph.D. Res. Microelectron. Electron. (PRIME), pp. 290-293, Jun. 2015. 
28. D. Zhao, K.-M. Lei, P.-I. Mak, M.-K. Law, R. P. Martins,  “Design considerations of a low-noise receiver front-end and its spiral coil for portable NMR screening,” in Proc. IEEE Asia-Pacific Conf. Circuits Syst. (APCCAS), pp. 403-406, Nov. 2014. [Student Travel Support grant] 
29. K.-M. Lei, P.-I. Mak, M.-K. Law, R. P. Martins, “A 2.93 µW 8-bit capacitance-to-RF converter for movable laboratory mice blood pressure monitoring," in Proc. Asia Society Quality Electron. Design (ASQED), pp.216-219, Aug. 2013. [Best Paper Award] ​

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Presentations (Non-peer review)

1. K.-M. Lei, "Precision Analog References," UM-HNU IC Academic Cloud Forum, Online, Jul. 2025.
2. K.-M. Lei, "A 4,100µm2 Wire-Metal-Based Temperature Sensor with a Fractional-Discharge FLL and a Time-Domain Amplifier with ±0.2°C Inaccuracy (3σ) from −40 to 125°C and 45fJ·K2 Resolution FoM in 28nm CMOS," Workshop on IC advances in China, Shenzhen, China, Mar. 2025. 
3. K.-M. Lei, "Precision Analog References," UM Hetao IC Research Institute, Macau, Feb. 2025.
4. K.-M. Lei, "A 0.5V 6.14μW Trimming-Free Single-XO Dual-Output Frequency Reference with [5.1nJ, 120μs] XO Startup and [8.1nJ, 200μs] Successive-Approximation-Based RTC Calibration," Mixed-Signal Technology Conference, Shenzhen, Jul. 2024. 
5. K.-M. Lei, "Precision Analog References," Summer Camp for Outstanding Undergraduate and Postgraduate Students, Macau, Jul. 2024.
6. K.-M. Lei, "A 0.5V 6.14μW Trimming-Free Single-XO Dual-Output Frequency Reference with [5.1nJ, 120μs] XO Startup and [8.1nJ, 200μs] Successive-Approximation-Based RTC Calibration," Southeast University, online seminar, Apr. 2024. 
7. K.-M. Lei, "A 0.5V 6.14μW Trimming-Free Single-XO Dual-Output Frequency Reference with [5.1nJ, 120μs] XO Startup and [8.1nJ, 200μs] Successive-Approximation-Based RTC Calibration," Workshop on IC advances in China, Shanghai, China, Mar. 2024. 
8. K.-M. Lei, "Portable NMR/MRI with customized silicon chips," Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, Dec. 2023. 
9. K.-M. Lei, "Precision Analog References," ZUMRI Industrial Group Forum, Zhuhai, China, Nov. 2023.
10. K.-M. Lei, "Portable NMR/MRI with customized silicon chips," Hong Kong University of Science and Technology, Hong Kong, Nov. 2023. 
11. K.-M. Lei, "Portable NMR/MRI with customized silicon chips," Shanghai Jiaotong University, Shanghai, China, Aug. 2023. 
12. ​K.-M. Lei, "Portable NMR/MRI with customized silicon chips," Nanjing University of Posts and Telecommunications, Nanjing, China, Aug. 2023. 
13. K.-M. Lei, "Precision Analog References" Southern University of Science and Technology (SUSTech), Shenzhen, China, Jun. 2023. 
14. ​K.-M. Lei, "A 12/13.56MHz Crystal Oscillator with Binary-Search-Assisted Two-Step Injection Achieving 5.0nJ Startup Energy and 45.8μs Startup Time," Workshop on IC advances in China, Shenzhen, China, Mar. 2023. 
15. ​K.-M. Lei, "Portable NMR/MRI with customized silicon chips," Songshan Lake Laboratory, Dongguan, China, Mar. 2023. 
16. K.-M. Lei, "A 0.35-V 5,200-µm2 2.1-MHz Temperature-Resilient Relaxation Oscillator with 667fJ/cycle Energy Efficiency Using an Asymmetric Swing-Boosted RC Network and a Dual-Path Comparator," Workshop on IC advances in China (virtual), Jun. 2022. 
17. K.-M. Lei, "Microelectronics in the biomedical arena:Palm-size CMOS NMR system," International Iberian Nanotechnology Laboratory, Braga, Portugal, Mar. 2018.
18. K.-M. Lei, "Microelectronics in the biomedical arena:Palm-size CMOS NMR system," Schlumberger-Doll Research Center, Cambridge, MA, Oct. 2017.
19. K.-M. Lei, "The small looms large - Applying millimeter-scale chips to scientific research," University of Macau, Macau, Mar. 2017.
20. K.-M. Lei, "Microelectronics in the biomedical arena:Palm-size CMOS NMR system," Laboratorio MDM (Materials and Devices for Microelectronics), Milan, Italy, Jun. 2016. 
21. K.-M. Lei, "Student Research Preview," IEEE Int. Solid-State Circuits Conf. (ISSCC), San Francisco, CA, Feb. 2015.

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Patents

1. S. Fan, Q. Zhou, K.-M. Lei,  R. Martins, P.-I. Mak, "一种微型多核核磁共振成像平台", China Invention Patent (in substantive examination), CN118033512A, 2024.
2. R. Luo, K.-M. Lei, R. Martins, P.-I. Mak, "一种时钟频率校准电路及校准系统", China Invention Patent (in substantive examination), CN118018006A, 2024.
3. Y. Jia, W. Hui, K.-M. Lei, R. Martins, P.-I. Mak, "一种基于集成电路的单细胞阻抗测量系统及方法", China Invention Patent (in substantive examination), CN117607208A, 2024.
4. S. Fan, Q. Zhou, K.-M. Lei, P.-I. Mak, R. Martins, "磁共振成像扫描仪和磁共振成像系统," China Invention Patent (in substantive examination), CN115856740A, 2023.
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