Body-Temperature Softening Electronic Ink for 3D Printing of Transformative Electronics

Stretchable Microneedle Patch for Electrophysiological Sensing

An Intravenous Needle that Softens via Body Temperature

Rapidly-Customizable 3D Printed Optogenetic Probes

Internet-of-Things in Neuroscience for World Wide Control of Neural Circuits and Animal Behavior

Soft, Wirelessly Rechargeable Brain Implant for Chronic Optogenetic Neuromodulation

Transformative Electronics Capable of Changing Their Shape, Rigidity, and Stretchability

Chronic, Smartphone-enabled Wireless Neuropharmacology with Neural Circuit Control

Ultrathin Soft Optofluidic Probes for Programmable In Vivo Pharmacology and Optogenetics

"Skin-like" Epidermal Electronics for Advanced Healthcare

Recent Work

Connecting the Dots: Sintering of Liquid Metal Particles for Soft and Stretchable Conductors, Chemical Reviews (2025).

Wireless Technologies for Wearable Electronics: A Review, Advanced Electronic Materials 2400884 (2025).

Curvature-specific coupling electrode design for a stretchable three-dimensional inorganic piezoelectric nanogenerator, ACS Nano 18, 34096-34106 (2024).

A stealthy neural recorder for the study of behaviour in primates, Nature Biomedical Engineering (2024).

Wireless optogenetic stimulation on the prelimbic to the nucleus accumbens core circuit attenuates cocaine-induced behavioral sensitization, Neurobiology of Disease 203, 106733 (2024).

Welcome

Our mission is to invent the future generation “soft” bio-integrated electronics and systems for advancing healthcare and biomedicine. Research areas in the Jeong Group include design and fabrication of flexible and stretchable electronics, photonic microsystems, and microfluidic devices for various applications such as health/wellness monitoring, disease diagnosis and therapy, prosthetics, human-machine interfaces, and brain research. We pursue interdisciplinary approach, involving knowledge and techniques from electrical engineering, materials science and engineering, biomedical engineering, and physics. Our interests lie in developing wearable skin electronics systems and implantable soft devices for the brain and heart.