Liwei Lin (Advisor)

Research Advised by Professor Liwei Lin

Peisheng He

Graduate Student Researcher
Mechanical Engineering
Professor Liwei Lin (Advisor)
Ph.D. 2023 (Anticipated)

BPN962: Insect-Scale Flying Robots

Fanping Sui
Kamyar Behrouzi
Wei Yue
2022

Insect-scale untethered flight with maneuverability is very challenging toward possible practical applications and attitude-stabilized flight (hovering) is one of the first steps for long-time air flight operations. In this project, we introduce the insect-scale, untethered, rotating-wing aerial vehicles with inherent stability by the gyroscopic effect to achieve several key advancements: (1) powered by alternating magnetic fields wirelessly; (2) 160-mg in weight and 20.0-mm-in-diameter in size – smallest untethered flying robot in the world; and (3) attitude-stabilized flights (...

BPN955: Nanostructured Plasmonic Biosensor

Kamyar Behrouzi
2022

In this project, we are developing at-home biosensor that enables people to test for specific biomarkers simply at their home. By harnessing nanoplasmonic effects in metallic nanoparticles, we aim to present highly sensitive, rapid, simple and inexpensive diagnostic method which can detect tiny number of biomarkers and antigens in real human sample. We hope to develop our method specifically for virus detection to combat future pandemics.

BPN941: Ultrasound-Induced Haptic Interface

Sedat Pala
2022

The next big thing, AR/VR, requires an immersive Human Machine Interface (HMI) in addition to visual and sound stimuli. Although skin is the biggest organ in the human body, very few efforts compared to visual and auditory senses have been done to develop a “sense of touch”. The mechanical stimulus to generate the touch sense by the embedded mechanoreceptors in the skin at different depths has been created in many ways as vibratory actuators, microneedles, etc. In this project, we are investigating to create haptic interface via radiation force generated by piezoelectric...

BPN940: Self-healing Materials for Sensing, Energy Storage and Harvesting Applications

Peisheng He
Yu Long
Yande Peng
2022

Animal skins often possess both functions of sensing and actuating to detect external stimulations and change shapes when needed, respectively. Furthermore, many animals, such as jellyfish and leptocephalus (eel larvae) have tissues that are transparent and ultra-stretchable, which are difficult to build in synthetic sensors and actuators. Moreover, all these living skins have self-healing properties, i.e. to restore their critical functions after being damaged. On the contrary, artificial electronic systems are often brittle and non-transparent. As such, biomimetic, skin-like...

BPN877: Pulse Acquisition and Diagnosis for Health Monitoring

Ruiqi Guo
2022

Traditional Chinese medicine(TCM) has existed for more than two thousand years and one of the important diagnostic methods is the pulse diagnosis. It generally takes decades of training for a practitioner to master this skill as pulse acquisition and diagnosis require long-term experiences and are very subjective. The project aims to use the combination of advanced sensor technology and artificial intelligence to emulate the TCM practice for health monitoring. A flexible piezoelectric film is designed to record the wrist pulse data. A group of representative pulse features has been...

BPN743: Highly Responsive pMUTs

Yande Peng
Sedat Pala
Fan Xia
2022

Ultrasonics has been realized as a nondestructive measurement method for a variety of applications, such as medical imaging, healthcare monitoring, structural testing, range finding, and motion sensing. Furthermore, high intensity ultrasound can be used in therapeutic treatments, such as lithotripsy for kidney stone comminution, hyperthermia for cancer therapy, high-intensity focused ultrasound (HIFU) for laparoscopic surgery and transcranial sonothrombolysis for brain stroke treatment. MEMS ultrasonic transducers are known to have several pronounced advantages over the conventional...

Alexander Alvara

Graduate Student Researcher
Mechanical Engineering
Electrical Engineering and Computer Sciences
Professor Liwei Lin (Advisor)
Professor Kristofer S.J. Pister (Advisor)
Ph.D. 2024 (Anticipated)

Alexander Alvara is a 4th year PhD student in mechanical engineering who earned his 3 BS degrees from UC Irvine '17 concurrently in mechanical engineering, aerospace engineering, and materials science and engineering. Alexander is interested in unique and extreme conditions applications and performance of MEMS devices as well as nanoscale materials engineering that investigates the interplay of materials with electromagnetism and light.