Highly Stretchable, Self-Healing, and Sensitive E-Skins at -78 °C for Polar Exploration.
J Am Chem Soc
; 146(15): 10699-10707, 2024 Apr 17.
Article
en En
| MEDLINE
| ID: mdl-38518116
ABSTRACT
Ultralow temperature-tolerant electronic skins (e-skins) can endow polar robots with tactile feedback for exploring in extremely cold polar environments. However, it remains a challenge to develop e-skins that enable sensitive touch sensation and self-healing at ultralow temperatures. Herein, we describe the development of a sensitive robotic hand e-skin that can stretch, self-heal, and sense at temperatures as low as -78 °C. The elastomeric substrate of this e-skin is based on poly(dimethylsiloxane) supramolecular polymers and multistrength dynamic H-bonds, in particular with quadruple H-bonding motifs (UPy). The structure-performance relationship of the elastomer at ultralow temperatures is investigated. The results show that elastomers with side-chain UPy units exhibit higher stretchability (â¼3257%) and self-healing efficiency compared to those with main-chain UPy units. This is attributed to the lower binding energy variation and lower potential well. Based on the elastomer with side-chain UPy and man-made electric ink, a sensitive robotic hand e-skin for usage at -78 °C is constructed to precisely sense the shape of objects and specific symbols, and its sensation can completely self-recover after being damaged. The findings of this study contribute to the concept of using robotic hands with e-skins in polar environments that make human involvement limited, dangerous, or impossible.
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Elastómeros
/
Dispositivos Electrónicos Vestibles
Límite:
Humans
Idioma:
En
Año:
2024
Tipo del documento:
Article