Skip to content. | Skip to navigation

You are here: Home » Physics & Astronomy » Pressroom » Seminars » Nanostructured Water-responsive Materials for Evaporation Energy Harvesting
Document Actions

Nanostructured Water-responsive Materials for Evaporation Energy Harvesting

Nanostructured Water-responsive Materials for Evaporation Energy Harvesting

Categories
When Nov 20, 2019
from 01:00 pm to 02:00 pm
Speaker Xi Chen, Ph.D.
Speaker Information Advanced Science Research Center (ASRC) at the Graduate Center, City University of New York Department of Chemical Engineering, City College of New York e-mail: xi.chen@asrc.cuny.edu
Where 1311 HN
Add event to calendar vCal
iCal

Natural evaporation involves water absorbing heat and vaporizing from higher chemical potential to lower chemical potential. While this process could involve a significant amount of energy transfer due to water's large latent heat of vaporization, the energy of natural evaporation remains untapped. Our recent progress in nanostructured water-responsive materials, which swell and shrink in response to changes in relative humidity, has enabled the development of evaporation energy harvesting devices that can directly convert evaporation energy into mechanical energy as well as to electricity. While such energy harvesting technique is still in its early stage, theoretical studies have predicted a great potential of this energy source. Here, motivated by these recent developments, we discuss our current development of water-responsive materials and evaporation harvesting devices, as well as the scientific and technical challenges of improving their overall energy conversion efficiency for practical applications.