MyJournals Home  

RSS FeedsSensors, Vol. 18, Pages 4337: A Fast Response-Recovery 3D Graphene Foam Humidity Sensor for User Interaction (Sensors)

 
 

8 december 2018 13:00:08

 
Sensors, Vol. 18, Pages 4337: A Fast Response-Recovery 3D Graphene Foam Humidity Sensor for User Interaction (Sensors)
 




Humidity sensors allow electronic devices to convert the water content in the environment into electronical signals by utilizing material properties and transduction techniques. Three-dimensional graphene foam (3DGF) can be exploited in humidity sensors due to its convenient features including low-mass density, large specific surface area, and excellent electrical. In this paper, 3DGF with super permeability to water enables humidity sensors to exhibit a broad relative humidities (RH) range, from 0% to 85.9%, with a fast response speed (response time: ~89 ms, recovery time: ~189 ms). To interpret the physical mechanism behind this, we constructed a 3DGF model decorated with water to calculate the energy structure and we carried out the CASTEP as implemented in Materials Studio 8.0. This can be ascribed to the donor effect, namely, the electronic donation of chemically adsorbed water molecules to the 3DGF surface. Furthermore, this device can be used for user interaction (UI) with unprecedented performance. These high performances support 3DGF as a promising material for humidity sensitive material.


Del.icio.us Digg Facebook Google StumbleUpon Twitter
 
12 viewsCategory: Chemistry, Physics
 
Sensors, Vol. 18, Pages 4338: Background Light Rejection in SPAD-Based LiDAR Sensors by Adaptive Photon Coincidence Detection (Sensors)
Sensors, Vol. 18, Pages 4336: Crack Assessment of Wheel Hubs via an Ultrasonic Transducer and Industrial Robot (Sensors)
 
 
blog comments powered by Disqus


MyJournals.org
The latest issues of all your favorite science journals on one page

Username:
Password:

Register | Retrieve

Search:

Physics

Use these buttons to bookmark us:
Del.icio.us Digg Facebook Google StumbleUpon Twitter


Valid HTML 4.01 Transitional
Copyright © 2008 - 2018 Indigonet Services B.V.. Contact: Tim Hulsen. Read here our privacy notice.
Other websites of Indigonet Services B.V.: Nieuws Vacatures News Tweets Travel Photos Nachrichten Indigonet Finances Leer Mandarijn