Route Choice Model of the Major Passenger Group in Urban Rail Transit: A Case Study of Beijing, China. - Chen Li; Xinjian Liu; Yunyun Bai; Bo Wang; Jianling Huang; Yanyan Chen (ICITE, 2020)

An 802pW 93% Peak Efficiency Buck Converter with 5.5×106 Dynamic Range Featuring Fast DVFS and Asynchronous Load-Transient Control. - Xinjian Liu; Shuo Li 008; Benton H. Calhoun (ESSCIRC, 2021)

A 32nA Fully Autonomous Multi-Input Single-Inductor Multi-Output Energy-Harvesting and Power-Management Platform with 1.2×105 Dynamic Range, Integrated MPPT, and Multi-Modal Cold Start-Up. - Shuo Li 008; Xinjian Liu; Benton H. Calhoun (ISSCC, 2022)

A 194nW Energy-Performance-Aware loT SoC Employing a 5.2nW 92.6% Peak Efficiency Power Management Unit for System Performance Scaling, Fast DVFS and Energy Minimization. - Xinjian Liu; Sumanth Kamineni; Jacob Breiholz; Benton H. Calhoun; Shuo Li 008 (ISSCC, 2022)

NanoWattch: A Self-Powered 3-nW RISC-V SoC Operable from 160mV Photovoltaic Input with Integrated Temperature Sensing and Adaptive Performance Scaling. - Daniel S. Truesdell; Xinjian Liu; Jacob Breiholz; Shourya Gupta; Shuo Li 008; Benton H. Calhoun (VLSI Technology and Circuits, 2022)

A Sub-nW 93% Peak Efficiency Buck Converter With Wide Dynamic Range, Fast DVFS, and Asynchronous Load-Transient Control. - Xinjian Liu; Benton H. Calhoun; Shuo Li 008 (IEEE J. Solid State Circuits, 2022)

Continuous Higher-Order Sliding Mode Control for a Class of n-th Order Perturbed Systems. - Jianxiong Li; Xinjian Liu; Miao Xu; Yiming Fang (IEEE Trans. Circuits Syst. II Express Briefs, 2022)

A 1pJ/bit Bypass-SPI Interconnect Bus with I2C Conversion Capability and 2.3nW Standby Power for Fabric Sensing Networks. - Xinjian Liu; Zhenghong Chen; Nugaira Gahan Mim; Anjali Agrawal; Benton H. Calhoun (BioCAS, 2023)

A -102dBm Sensitivity, 2.2μA Packet-Level-Duty-cycled Wake-Up Receiver with ADPLL achieving -30dB SIR. - Linsheng Zhang; Divya Duvvuri; Suprio Bhattacharya; Anjana Dissanayake; Xinjian Liu; Henry L. Bishop; Yaobin Zhang; Travis N. Blalock; Benton H. Calhoun; Steven M. Bowers (CICC, 2023)

A Self-Powered SoC with Distributed Cooperative Energy Harvesting and Multi-Chip Power Management for System-in-Fiber. - Xinjian Liu; Daniel S. Truesdell; Omar Faruqe; Lalitha Parameswaran; Michael Rickley; Andrew Kopanski; Lauren Cantley; Austin Coon; Matthew Bernasconi; Tairan Wang; Benton H. Calhoun (ISSCC, 2023)

A 33nW Fully Autonomous SoC With Distributed Cooperative Energy Harvesting and Multi-Chip Power Management for mm-Scale System-in-Fiber. - Xinjian Liu; Daniel S. Truesdell; Omar Faruqe; Lalitha Parameswaran; Michael Rickley; Andrew Kopanski; Lauren Cantley; Austin Coon; Matthew Bernasconi; Tairan Wang; Benton H. Calhoun (IEEE Trans. Biomed. Circuits Syst., 2023)

8.5 A 6nA Fully-Autonomous Triple-Input Hybrid-Inductor-Capacitor Multi-Output Power Management System with Multi-Rail Energy Sharing, All-Rail Cold Startup, and Adaptive Conversion Control for mm-scale Distributed Systems. - Xinjian Liu; Anjali Agrawal; Akiyoshi Tanaka; Benton H. Calhoun (ISSCC, 2024)

Distributed Energy Harvesting and Power Management Units for Self-Powered In-Fabric Sensing Networks. - Xinjian Liu; Anjali Agrawal; Akiyoshi Tanaka; Benton H. Calhoun (MWSCAS, 2024)

A 2.3-5.7 μW Tri-Modal Self-Adaptive Photoplethysmography Sensor Interface IC for Heart Rate, SpO2, and Pulse Transit Time Co-Monitoring. - Peng Wang 166; Rishika Agarwala; Natalie B. Ownby; Xinjian Liu; Benton H. Calhoun (IEEE Trans. Biomed. Circuits Syst., 2024)

A Sub-μW Energy-Performance-Aware IoT SoC With a Triple-Mode Power Management Unit for System Performance Scaling, Fast DVFS, and Energy Minimization. - Xinjian Liu; Sumanth Kamineni; Jacob Breiholz; Benton H. Calhoun; Shuo Li 008 (IEEE J. Solid State Circuits, 2024)

An 81.0% Peak Efficiency, 1.0W/cm3 Miniaturized 5V/1A AC-DC Converter Using a Highly-Integrated Primary-Side Active Clamp Flyback Controller with Adaptive Frequency and Zero-Voltage Switching. - Akiyoshi Tanaka; Shan He; Reza Mounesi; Xinjian Liu; Omar Faruqe; Nugaira Gahan Mim; Daniel S. Truesdell; Adel Nasiri; Benton H. Calhoun (CICC, 2025)

Characterization of Stacked PV Cell Configurations in a Deep N-Well 65nm CMOS Technology. - Anjali Agrawal; Xinjian Liu; Daniel S. Truesdell; Benton H. Calhoun (ISCAS, 2025)

A Fully Integrated, Custom End-to-End PPG Sensing System for Ultra-Low Power Wearables. - Omar Faruqe; Peter Le; Daehyun Lee; Xinjian Liu; Omar Abdelatty; Daniel S. Truesdell; Benton H. Calhoun (ISCAS, 2025)

HAIL: An Efficient Iterative Algorithm for Qubit Mapping via Layer-Weight Assignment and Search Space Reduction. - Kang Xu; Zeyang Li; Xinjian Liu; Dandan Li; Yukun Wang (CoRR, 2025)