Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2019 Sep 9;10:4087. doi: 10.1038/s41467-019-12044-5

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© The Author(s) 2019

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

PMC Copyright notice

Fig. 3 — Actuating performance of GO/PPy actuator. a Actuating performance of GO/PPy actuators under the stimulus of humidity, (GO/PPy (a), GO/PPy (b) and GO/PPy (c) represent GO/PPy actuators with different GO thicknesses of 12.8, 25.2 and 37.1 μm, respectively) (the insets are photographs of the bending GO/PPy ribbon under different RH values); b Actuating performance of GO/PPy actuators under the stimulus of humidity, (GO/PPy (d), GO/PPy (e) and GO/PPy (b) represent GO/PPy actuators with increasing PPy thicknesses and same GO thickness of 25.2 μm; c switching from the bent to the straight state of GO/PPy (b) by changing the corresponding RH from 50 to 68%, and vice versa; d cyclic stability of the curvature of a GO/PPy actuator over 100 cycles (50–68% RH); e durable behavior of GO/PPy (b) after exposure to 57% or 67% RH for 600 s; f actuating performance of GO/PPy (b) under the stimulus of temperature (the insets are photographs of the bending GO/PPy ribbon at temperatures of 25, 50 and 100 °C); g actuating performance of GO/PPy (b) under the stimulus of IR light (the insets are photographs of the bending GO/PPy (b) at different times); h the bending force of GO/PPy (b) actuator recorded during the process of turning on/off the humidifier; i the contractile force of GO/PPy (b) actuator recorded during the process of turning on/off IR light with power densities of 0.0423, 0.0831 and 0.126 W cm⁻² (from left to right)