A Pick-up and Delivery System Inspired by Nature

  • Author: Nancy McGuire
  • Published: 06 October 2015
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
  • Source / Publisher: Langmuir/ACS Publications
  • Associated Societies: American Chemical Society (ACS), USA
thumbnail image: A Pick-up and Delivery System Inspired by Nature

Nature abounds with water-repellent surfaces: insect wings, rice leaves, and lotus leaves, to name a few. Other surfaces hold water droplets tightly: gecko feet, rose petals, and peanut leaves. Chemical compositions and structural features enable these surfaces to shed or hold water.


Tao Hang, Ming Li, and colleagues, Shanghai Jiao Tong University, China, used electrodeposition to create surfaces covered in gold-coated nickel nanocones that mimic the water-shedding properties of cicada wings. The surfaces kept their water-shedding properties even after being stored for a year in air at room temperature.


The researchers fabricated complementary surface structures by etching away the nickel nanocone arrays embedded in a gold coating, leaving cone-shaped pits. These surfaces held water droplets even when they were turned upside down.


The team examined the effects of nanocone size and spacing on the properties of the surfaces in order to optimize their performance. They deposited aqueous solutions with a wide range of pH values onto the hydrophobic surfaces and used the porous surfaces as "mechanical hands" to pick up these droplets, transport, and deliver them to another surface.


 

Article Views: 1584

Sign in Area

Please sign in below

Additional Sign In options

Please note that to comment on an article you must be registered and logged in.
Registration is for free, you may already be registered to receive, e.g., the newsletter. When you register on this website, please ensure you view our terms and conditions. All comments are subject to moderation.

Article Comments - To add a comment please sign in

Bookmark and Share

If you would like to reuse any content, in print or online, from ChemistryViews.org, please contact us first for permission. more


CONNECT:

ChemistryViews.org on Facebook

ChemistryViews.org on Twitter ChemistryViews.org on YouTube ChemistryViews.org on LinkedIn Sign up for our free newsletter


A product of ChemPubSoc Europe (16 European Chemical Societies)and Wiley-VCH