Focused Session Invited Speakers

Printing technologies have attracted tremendous attention in the realization of customized soft electronics due to their advantages, such as non-vacuum, low-temperature, and non-contact processability. In this presentation, I would like to present our recent results of printing solid-state elastic conductors into self-supporting three-dimensional (3D) geometries that promise the design diversity of soft electronics, enabling complex, multifunctional, and tailored human-machine interfaces. 

Printed electronic devices that are low-cost and disposable will revolutionize applications in wearable electronics, optoelectronics, flexible printed circuits, hybrid circuits, energy devices, and sensors, but a major challenge in this field is the reliance on plastic substrates such as polyethylene terephthalate. 

Despite tremendous developments in luminescene performane of perovskite light-emitting diodes (PeLEDs), the brittle nature of perovskite crystals and their poor crystallinity on flexible substrates inevitably lead to inferior performance, which block their potential applications in large-area full-color displays and solid-state lighting.

Most skin injuries heal by tissue regeneration and repair. However, in patients with underlying conditions such as diabetes or with vast injuries, healing may be impaired. Impaired wound healing has been responsible for significant financial burden, pain, morbidity, and mortality. 

Chronic nonhealing wounds represent a substantial healthcare burden, with >6 million individuals affected in the United States alone. A chronic wound is defined as one that has failed to heal by 8–12 weeks and is unable to restore function and anatomical integrity to the affected site. 

What would we be able to do if we could build electronically integrated machines the at a scale of 100 microns? At this scale, semiconductor devices are small enough that we could put the computational power of the spaceship Voyager onto a machine that could be injected into the body. Such robots could have on board detectors, power sources, and processors that enable them to sense, interact, and control their local environment. In this talk I will describe several cutting edge technologies we are developing to achieve this vision.  

Wearable, flexible electronic devices have received tremendous attention in recent years because of their in situ and real-time monitoring capabilities of human health parameters and mobile activities in a non-invasive or minimally invasive manner. However, the immaturity of the technique for seamless and intimate integration of electronics with the human body hampers prolonged device wearing. 

Large-scale, straightforward wet-spinning of two-dimensional (2D) materials has emerged as a promising direction for processability to develop meter-long dimensional fibers. For example, graphene fibers (GFs) have great potential in future portable wearable electronics, which have gained considerable attention owing to high electrical conductivity, lightweight, tiny volume, outstanding mechanical flexibility, excellent deformability, low cost, and the ability to be woven into smart textile fabrics.