PolyU unveils liquid metal microelectrodes for implantable bioelectronic devices

The interdisciplinary research team led by Prof. Zijian Zheng, Chair Professor of Soft Materials and Devices and Professor of the Department of Applied Biology and Chemical Technology, has developed liquid metal microelectrodes (μLMEs) for fabricating electronic devices that can be attached to the skin or implanted in human body.

Prof. Zheng said the invention of μLMEs can push forward technological advancements in medical and augmented reality fields.

Transfer of Ag micropatterns from the wafer to the SBS fiber mat. The inset image shows the wafer-sized Ag micropatterns patterned on the wafer before transfer. The main image shows the transferred Ag onto the SBS fiber mat after dissolving the sacrificial layer. The super-soft and freestanding sample is floating on the water.

μLMEs attached on a human arm (mass loading of LM, 10mg/cm2)

μLMEs with a high density of 75,500 electrodes/cm2