Bioinspired Prosthetic Interfaces

Abstract

Mechanical replacement prosthetics have advanced in both esthetics and mechanical functions, but still require progress in attaining full natural functionality via tactile feedback. Through bioinspiration of the somatosensory system, recent works in the development of materials and technologies at three critical interfaces have shown great advancements: skin‐inspired multifunctionality at the prosthetic level using flexible electronics, artificial transmission of the biosignals between the prosthesis and nervous system, and stimulation and recording of these signals with mechanically compliant, implantable neural interfaces. Herein, a systematic study of the artificial skin sensation pathways for the prosthetic interfaces is discussed together with the current state‐of‐the‐art technologies and prospective strategies to enable the complete sensory feedback loop in prosthetics through the use of biomimetic sensing platforms, artificial synapses, and neural interrogation electronics.

Wearable Triboelectric Nanogenerators for Therapeutics

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Fully transient stretchable fruit‐based battery as safe and environmentally friendly power source for wearable electronics

“…Such EMG devices have been used to measure the electrical changes in muscles for various purposes and applications, such as human motion science, clinical neurophysiology, and diagnostics 60 . It can also provide useful physiological signals originating from muscle activities in response to stimulation from the nerve that is essentially important for future prosthetic research 61 . However, some conventional clinical EMG sensors comprise of invasive needle‐type probes, leading to inevitable painful experience 62 .…”

An Iontronic Multiplexer Based on Spatiotemporal Dynamics of Multiterminal Organic Electrochemical Transistors

“…Therefore, our approach finds relevant application in various emerging application fields including bioelectronics, wearables, e-skins, and neuromorphic sensors, where minimization of physical wiring and peripheral circuitry is essential for compact communication between the sensing and processing modalities. [44,[54][55][56] In addition, the proposed iontronic system can be extended for multiplexing of temporally sparse or even asynchronous, impulse-like input signals of fixed amplitude, such as in the case of spiking neural networks and time/frequency-domain coding of information. [57][58][59] The reverse process of spatial reconstruction requires the detection of output current levels, which are directly related to the position of a signal source.…”