Press Esc to close
Tuesday 23 May 2017
News updated at 10:19 PM IST

Jumping droplets key to energy efficient products

Washington, Jan 2,PTI: 20:27 IST
Microscopic water droplets jumping from one surface to another could hold the key to a wide array of more energy efficient products — from large solar panels to compact laptop computers, say scientists.

A team at Duke University has, in fact, developed a new way of producing thermal diodes, devices which regulate heat to preferentially flow in a certain direction, effectively creating a thermal conductor in the forward direction and an insulator in the reverse direction.

While thermal diodes can be made from solid materials, these solid-state diodes are not nearly as effective as “phase-change” thermal diodes that rely on vaporisation and condensation to transport heat, say the scientists.

These phase-change diodes can transfer over a hundred times more heat in the forward direction compared to the reverse, but with major limitations — they are dependent on gravity or restricted by a tubular configuration.

These limitations severely constrain the application of phase-change thermal diodes, for example, in mobile electronics which require orientation independence or solar panels which require a large surface area.

The Duke engineers believe they have figured out a way to solve these limitations to existing thermal diodes by exploiting self-propelled water droplets, which can jump from a superhydrophobic (highly water-repellent) surface to a superhydrophilic (highly absorbent) surface, but not the other way around.

Go to Top

Photo Gallery
Helpers attend to injured people inside the Manchester Arena...

Helpers attend to injured people inside the Manchester Arena...

South Korean army's K-55 self-propelled howitzer fires during the annual exercise in Paju

South Korean army's K-55 self-propelled howitzer fires during the annual exercise in Paju

President Donald Trump pauses as he makes a statement...

President Donald Trump pauses as he makes a statement...

Delhi Chief Minister Arvind Kejriwal at an interaction with...

Delhi Chief Minister Arvind Kejriwal at an interaction with...

A shopkeeper looks for valuables and documents in the debris...

A shopkeeper looks for valuables and documents in the debris...

HP State Electricity Board Employees Union members shout slogans...

HP State Electricity Board Employees Union members shout slogans...

Congress and CPM leaders, activists raise slogans against the West Bengal...

Congress and CPM leaders, activists raise slogans against the West Bengal...

Former Union Minister and senior Congress leader Mani Shankar Aiyar with Center for Peace...

Former Union Minister and senior Congress leader Mani Shankar Aiyar with Center for Peace...

In this NASA provided frame from video, NASA astronaut Jack Fischer...

In this NASA provided frame from video, NASA astronaut Jack Fischer...

Actor Brad Pitt gives his autographs for fans...

Actor Brad Pitt gives his autographs for fans...

Like us on Facebook

Copyright 2017, The Printers (Mysore) Private Ltd., 75, M.G Road, Post Box 5331, Bengaluru - 560001
Tel: +91 (80) 25880000 Fax No. +91 (80) 25880523
Powered by Yodasoft Technologies Pvt. Ltd.