Research

High-frequency and intrinsically stretchable polymer diodes

Prof. Zhenan Bao et al report intrinsically stretchable diodes capable of operating at a frequency high enough for wireless operation of soft sensors and electrochromic display pixels using RFID, in which the base-carrier frequency is 6.78 MHz or 13.56 MHz.

All-solid-state lithium–sulfur batteries (ASSLSBs) enhanced by redox mediators (RM)

Prof. Yi Cui, Prof. Zhenan Bao et al directly track the sulfur speciation and reveal the redox chemistry for Li2S cathodes in ASSLSBs for the first time by using operando sulfur K-edge X-ray absorption spectroscopy.

A molecular design approach towards elastic and multifunctional polymer electronics

Prof. Zhenan Bao, Prof. Jian Qin et al show a molecular design concept that achieves targeted properties in both polymeric semiconductors and dielectrics and demonstrate the potential of solution-processed multilayer device manufacturing.

Rechargeable Na/Cl2 and Li/Cl2 batteries

Prof. Hongjie Dai et al developed a new battery chemistry with 6 times higher energy density, which may lead to longer battery life for future wearables, hearing aids and cell phones.

Portable thermoacoustic imaging for biometric authentication

Prof. Amin Arbabian et al present the first known instance of a silicon IC being used as the output stage of the transmitter for a thermoacoustic imaging system.

Sensing leg movement enhances wearable monitoring of energy expenditure

Prof. Steven Collins, Prof. Scott Delp, Prof. Mykel Kochenderfer and Patrick Slade present a wearable system that estimates metabolic energy expenditure in real-time during common steady-state and time-varying activities with substantially lower error than state-of-the-art methods.

High-performance flexible nanoscale transistors based on transition metal dichalcogenides

Prof. Eric Pop et al describe flexible nanoscale field effect transistors based on 2D semiconductors, such as MoS2, MoSe2 and WSe2, their fabrication, and properties.

Optimizing depth perception in virtual and augmented reality through gaze-contingent stereo rendering

Prof. Gordon Wetzstein et al introduce a stereo rendering technique that models the gaze-dependent shift of the no-parallax point in the human eye and show that gaze-contingent stereo rendering improves the perceptual realism and depth perception of emerging wearable computing systems.

Conjugated polymer for implantable electronics toward clinical application

Prof. Zhenan Bao et al review polymeric devices that have shown feasibility in studies with potential for clinical adoption.

Wearable vibrotactile stimulation (VTS) for upper extremity rehabilitation in chronic stroke: clinical feasibility trial using the VTS glove

Caitlyn Seim, Steven Wolf and Thad Starner show that VTS applied to a disabled limb may positively impact tactile perception, tone and spasticity, and voluntary range of motion.