[AllUsers-ISR] Talk from Michael Dickey on Liquid Metal Based Electronics, Monday 18 October 15h

[Mahmoud Tavakoli]

Dear All 

On Monday, 18 November at 15h, we will have an attractive talk from Professor Michael Dickey on Liquid Metal Enabled Soft and Stretchable Electronics. Professor Michael Dickey is one of the most well-known scientists in the field of liquid metal electronics, who made a significant contribution in pushing this field forward not only for the applications of electronics, but as well in many other fields. I take the opportunity to deliver my sincere appreciation to Professor Mehmet Ozturk who made this online event possible. 

Please use the following Link to login to the talk: 

https://videoconf-colibri.zoom.us/j/7647723043 
Monday 18/11/2024 15h 



Liquid Metal Enabled Soft and Stretchable Electronics 

Michael Dickey 

NC State University 

Camille and Henry Dreyfus Professor 

Department of Chemical and Biomolecular Engineering 



Gallium-based liquid metals have remarkable properties: melting points below room temperature, water-like viscosity, low-toxicity (unlike Hg), and effectively zero vapor pressure (they don’t evaporate). They also have, by far, the largest interfacial tension of any liquid at room temperature. Yet, these liquid metals can be patterned into non-spherical shapes (cones, wires, etc) due to a thin, oxide skin that forms rapidly on its surface. We have harnessed this oxide to pattern and manipulate metal into shapes—such as wires and particles—that are useful for applications that call for soft and deformable metallic features, such as wearables. It is possible to pattern the metal in a number of ways, including injection into microchannels or by direct-write 3D printing at room temperature, to form ultra-stretchable wires, deformable antennas, and microelectrodes. In addition, recently we have shown that liquid metals can be used in textiles that are highly conductive, breathable, and most interestingly, can “self-heal” autonomously when cut. The metals can also be used to create stretchable gas barrier materials. Normally, stretchable materials are inherently permeable, which means it is not possible to encapsulate air sensitive electronic devices. We have used liquid metal, combined with elastomer, to create nearly perfect hermetic seals that can block water or oxygen from entering or leaving devices. Such materials can be used to encase stretchable batteries to prevent leakage of electrolyte (and thus, battery degradation) with respect to time. Finally, we have recently demonstrated a way to separate the oxide from the liquid metal as a way to print ultra-thin (4 nm thick) functional oxide films at room temperature. The talk will discuss the implications of these materials for soft and stretchable electronics; that is, devices with desirable mechanical properties for human-machine interfacing, soft robotics, and wearable electronics. 




Short CV: 





Michael Dickey received a BS in Chemical Engineering from Georgia Institute of Technology (1999) and a PhD from the University of Texas (2006) under the guidance of Professor Grant Willson. 
>From 2006-2008 he was a post-doctoral fellow in the lab of Professor George Whitesides at Harvard University. 
He is currently the Camille and Henry Dreyfus Professor in the Department of Chemical & Biomolecular Engineering at NC State University. 
He completed a sabbatical at Microsoft in 2016 and EPFL in 2023. 
Michael’s research interests include soft matter (liquid metals, gels, polymers) for soft and stretchable devices (electronics, energy harvesters, textiles, and soft robotics). 






Best Reagards 

Mahmoud Tavakoli 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.isr.uc.pt/archive/allusers/attachments/20241114/113b4a5f/attachment.html>