Liwei Lin (Advisor)

Research Advised by Professor Liwei Lin

Lin Group:  List of Projects | List of Researchers

Plasmonic Coffee-Ring Biosensing for AI-Assisted Point-of-Care Diagnostics

Kamyar Behrouzi
Zahra Khodabakhshi Fard
Chun-Ming Chen
Peisheng He
Megan Teng
Liwei Lin
2025

A major challenge in addressing global health issues is developing simple, affordable biosensors with high sensitivity and specificity. Significant progress has been made in at-home medical detection kits, especially during the COVID-19 pandemic. Here, we demonstrated a coffee-ring biosensor with ultrahigh sensitivity, utilizing the evaporation of two sessile droplets and the formation of coffee-rings with asymmetric nanoplasmonic patterns to detect disease-relevant proteins as low as 3 pg/ml, under 12 min. Experimentally, a protein-laden droplet dries on a nanofibrous membrane, pre-...

Lin Lab: From COVID to Cancer, New At-Home Test Spots Disease with Startling Accuracy

July 8, 2025
A new technology created by UC Berkeley engineers uses the "coffee-ring effect," paired with plasmonics and AI, for rapid diagnostics. July 8, 2025 by Kara Manke | Article Published in UC Berkeley News

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Likun Zhang

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

Anticipated Ph.D 2025 (Tsinghua Berkeley Shenzhen Institute)

Wei Xu

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

Dr. Wei Xu is a distinguished overseas talent under the Shenzhen Peacock Program and a senior member of IEEE. He earned his bachelor's and master's degrees in engineering from Huazhong University of Science and Technology in 2010 and 2013, respectively, and completed his PhD at the Hong Kong University of Science and Technology in 2017. Since joining the School of Electronic and Information Engineering at Shenzhen University in 2018 (Associate Prof.), he has also become a visiting scholar at UC Berkeley since 2024. His research primarily focuses on CMOS-MEMS/MEMS integrated sensor...

Ilryu Jang

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

High-Q Aluminum Nitride RF MEMS Lamb Wave Resonators and Narrowband Filters

Ernest Ting-Ta Yen
Albert P. Pisano
Clark T.-C. Nguyen
Liwei Lin
Richard M. White
2012

The increasing demands for higher performance, advanced wireless and mobile communication systems have continuously driven device innovations and system improvements. In order to reduce power consumption and integration complexity, radio frequency (RF) microelectromechanical systems (MEMS) resonators and filters have been considered as direct replacements for off-chip passive components. In this dissertation, a new radio architecture for direct channel selection is explored. The primary elements in this new architecture include a multitude of closely-spaced narrowband filters (...

Huicong Deng

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

Biomimetic, Polymeric Transistor-Based Biosensor Technology

Jim C. Cheng
Albert P. Pisano
Ming C. Wu
Liwei Lin
2009

The goal of this research is the creation of robust, flexible, polymer sensors and circuits fabricated partially from the low cost biopolymer, chitosan, the deacetylated form of chitin which is the second most abundant polyssacharide in nature. Chitin is found in crustaceans, insects, bacteria and fungi. The sensors will detect diatomic gases and DNA to more complex macro molecules (e.g. exotoxins) in a fluidic or dry environment. Polymer-nanoparticle (e.g. Ge) hybrid films allow for development of robust polymer thin-film transistors and, with optimization of the hybrid film,...

Chitosan as a MEMS Engineering Material

Jim C. Cheng
Albert P. Pisano
Liwei Lin
2006
Since the beginning of civilization, there has been a thrust to better ourselves, to enhance our performance and capabilities. With nature as a template, a variety of sensors were created. As technology improved, artificial sensors have mostly surpassed their natural counterparts in sensitivity and size except in several specific areas, one being infrared sensing. The Melanophila acuminata, also known as the jewel beetle, is one of ...

High-Voltage Water-Scarce Hydrogel Electrolytes Enable Mechanically Safe Stretchable Li-ion Batteries

Peisheng He
Jong Ha Park
Yingkai Jiao
Rushil Ganguli
Yigen Huang
Ashley Lee
Christine Heera Ahn
Monong Wang
Yande Peng
Yu Long
Chun-Ming Chen
Zihan Wang
Ziting Tian
Baoxia Mi
Ana Claudia Arias
Chao Fang
Anju Toor
Liwei Lin
2025

Soft actuators with unique mechanics have gained significant interests for unique capabilities and versatile applications. However, their actuation mechanisms (usually driven by light, heat, or chemical reactions) result in long actuation times. Reported magnetically actuated soft actuators can produce rapid and precise motions, yet their complex manufacturing processes may constrain their range of applications. Here, the “bone-in-flesh” is proposed that constructs combining rigid magnetic structures encapsulated within soft polymers to create untethered magnetic soft actuators. This...