Liwei Lin (Advisor)

Research Advised by Professor Liwei Lin

Lin Group:  List of Projects | List of Researchers

Umut Can Yener

Graduate Student Researcher
Mechanical Engineering
Professor Liwei Lin (Advisor)
Ph.D. 2029 (Anticipated)

Umut Can Yener received his B.Sc. in mechanical engineering from Middle East Technical University in Turkey. For this M.Sc. degree, he joined Bio-integrated Microdevices Laboratory (BMDL) at Koc University, where he worked on wearable ultrasonic devices for continuous monitoring applications and passive ultrasonic communication systems. Currently, Umut is a Ph.D. student at the University of California Berkeley as a Fulbright scholar. He is interested in medical devices and continuous monitoring systems.

Yuan Gao

Graduate Student Researcher
Mechanical Engineering
Professor Liwei Lin (Advisor)
Ph.D. 2028 (Anticipated)

Yuan Gao received his B.Eng. degree in Robotics Engineering from Peking University, Beijing, China, in 2023. He is currently pursuing a Ph.D. in Mechanical Engineering at the University of California, Berkeley.

Chao Wu

Postdoctoral Researcher
Mechanical Engineering
Professor Liwei Lin (Advisor)
PostDoc 2024 to present

Mid-Air Acoustic Actuation by PMUTs

Wei Yue
2024
Fall 2024 BSAC Research Review Presentation View Presentation View Slides Project:...

Huicong Deng

Graduate Student Researcher
Mechanical Engineering
Professor Liwei Lin (Advisor)
Ph.D. 2029 (Anticipated)

Peisheng He

Postdoctoral Researcher
Mechanical Engineering
Professor Liwei Lin (Advisor)
Ph.D. 2023, PostDoc 2023 to present

Peisheng He received his B.S. in Materials Science and Engineering from Shanghai Jiao Tong University in 2018. He received his M.S. and Ph.D. in Mechanical Engineering from University of California, Berkeley in 2020 and 2023, respectively under the supervision of Prof. Liwei Lin. He is currently a post-doctoral researcher in Professor Liwei Lin's lab as a Bakar Innovation Fellow.

Spring 2023 Research Review Presenter

Ilryu Jang

Visiting Scholar Researcher
Mechanical Engineering
Professor Liwei Lin (Advisor)
Visiting Scholar 2024 to present

Resoswitch Squegging Control by Compact Model-Assisted Impact Electrode Design

Kevin H. Zheng
Qiutong Jin
Clark T.-C. Nguyen
2024

This paper demonstrates, via a novel compact model and experiments, that squegging in micromechanical resonant electrical switches (resoswitches) [1] is controllable via impact electrode design. The model captures the nonlinear dynamics of impact contact and predicts squegging. Unlike other numeric and finite-element (FEM)-based models, this physical parameter-based model has no convergence difficulties when simulating impact, accurately captures squegging, and runs within any circuit simulator with up to 100× simulation time improvement compared to commercial software....

Lego-Like Reconfigurable Soft Haptic Array via Self-Healing Sensor/Actuator Modules

Peisheng He
Wenying Qiu
Yande Peng
Jong Ha Park
Qilong Cheng
David Bogy
Liwei Lin
2024

Soft haptic devices could enable unique applications in AR/VR, healthcare, and human-machine interface systems. Here, a versatile reconfigurable haptic system is proposed for different application scenarios at diverse anatomical locations and body shapes. Lego toys are the inspiration of the module concept where individual haptic modules can be cut, reconfigured, and reconnected as a new system in the ambient environment repeatedly.

Each module consists of the basic building block of flexible selfhealable ion-conducting and insulating layers....

A Non-Wolatile Surface Tension-Driven Electricochemical Liquid Metal Actuator

Xiaohang Chen
Zihan Wang
Wei Yue
Peisheng He
Liwei Lin
2024

We present a surface-tension driven electrochemical liquid metal (LM) actuator without the gas-producing sidereaction and capable of fabrication/operation in ambient air for practical applications. A hybrid supercapacitor is introduced to inhibit the common counter electrode side reactions, and the use of quasi-solid-state ionic hydrogel instead of liquid electrolyte further enables non-volatile operations. A 2×4 LM droplet array is demonstrated to actuate by a low driving voltage of 3.5 V for a maximum force of ~8.5 mN and a displacement of 0.56 mm in only 1.75 s. With the favorable...