Waste heat can be converted to electricity more efficiently using one-dimensional nanoscale materials as thin as an atom - ushering a new way of generating sustainable energy - thanks to new research by the University of Warwick.

Led by Drs Andrij Vasylenko, Samuel Marks, Jeremy Sloan and David Quigley from Warwick's Department of Physics, in collaboration with the Universities of Cambridge and Birmingham, the researchers have found that the most effective thermoelectric materials can be realised by shaping them into the thinnest possible nanowires.

Thermoelectric materials harvest waste heat and convert it into electricity - and are much sought-after as a renewable and environmentally friendly sources of energy.

Dr Andrij Vasylenko, from the University of Warwick's Department of Physics and the paper's first author, commented:

"In contrast to 3-dimensional material, isolated nanowires conduct less heat and more electricity at the same time. These unique properties yield unprecedented efficiency of heat-to-electricity conversion in one-dimensional materials."

The researchers - which included the group of Dr Andrew J. Morris from the University of Birmingham - were investigating the crystallisation of tin telluride in extremely narrow carbon nanotubes used as templates for the formation of these materials in their lowest dimensional form.

In a combined theoretical-experimental research, they were able not only to establish a direct dependence between the size of a template and a resulting structure of a nanowire, but also to demonstrate how this technique can be used for regulation of the thermoelectric efficiency of tin telluride formed into nanowires 1-2 atoms in diameter.

First author Dr Vasylenko is excited about what this research could lead to:

"This opens up an opportunity for creation of a new generation of thermoelectric generators, but also for exploration of alternative candidate materials for thermoelectrics among abundant and non-toxic chemical elements."

With a growing demand for both miniatuarisation and enhanced efficiency of thermoelectrics, nanostructuring offers a viable route for targeting both objectives.

Their results are reported in the journal ACS Nano.

Research Report: "Electronic Structure Control of Sub-nanometer 1D SnTe via Nanostructuring within Single-Walled Carbon Nanotubes"

Related Links
University of Warwick
Nano Technology News From SpaceMart.com
Computer Chip Architecture, Technology and Manufacture

Tweet

Thanks for being here; We need your help. The SpaceDaily news network continues to grow but revenues have never been harder to maintain. With the rise of Ad Blockers, and Facebook - our traditional revenue sources via quality network advertising continues to decline. And unlike so many other news sites, we don't have a paywall - with those annoying usernames and passwords. Our news coverage takes time and effort to publish 365 days a year. If you find our news sites informative and useful then please consider becoming a regular supporter or for now make a one off contribution.
SpaceDaily Contributor $5 Billed Once credit card or paypal		SpaceDaily Monthly Supporter $5 Billed Monthly paypal only

Change the face of nanoparticles and you'll rule chemistry
Warsaw, Poland (SPX) May 29, 2018
Change the face of nanoparticles and you'll rule chemistry! Depending on the lighting, the surface of appropriately crafted nanoparticles can change its topography. Researchers from the Institute of Physical Chemistry of the Polish Academy of Sciences have shown that the molecular mechanism they have designed makes it possible, by the use of light, to effectively uncover or hide catalyst molecules. The technique they present leads to qualitatively new possibilities to control the course of chemical reac ... read more