Featured Research

from universities, journals, and other organizations

Making the most of carbon nanotube-liquid crystal combos

Date:
April 2, 2014
Source:
Springer Science+Business Media
Summary:
Physical response of combination materials made of nanotubes with ferroelectric liquid crystals could lead to new applications. Dispersions of carbon nanotubes with liquid crystals have attracted much interest because they pave the way for creating new materials with added functionalities. Now, a new study focuses on the influence of temperature and nanotube concentration on the physical properties of such combined materials.

Dispersed multi-wall carbon nanotubes on a glass surface.
Credit: Yakemseva et al.

Physical response of combination materials made of nanotubes with ferroelectric liquid crystals could lead to new applications.

Related Articles


Dispersions of carbon nanotubes with liquid crystals have attracted much interest because they pave the way for creating new materials with added functionalities. Now, a study published in EPJ E by Marina Yakemseva and colleagues at the Nanomaterials Research Institute in Ivanovo, Russia, focuses on the influence of temperature and nanotube concentration on the physical properties of such combined materials. These findings could have implications for optimising these combinations for non-display applications, such as sensors or externally stimulated switches, and novel materials that are responsive to electric, magnetic, mechanical or even optical fields.

The added functionalities of these compound materials are achieved by combining the self-organisation of a liquid crystal with the characteristics of nanotubes, which exhibit a major difference in electric and thermal conductivity between their long and short axis. In this study, the authors focused on the electro-optic and dielectric properties of ferroelectric liquid crystal-multiwall carbon nanotube combinations.

Specifically, they studied the influence of temperature on the compound material's main physical properties, such as tilt angle, spontaneous polarisation, response time, viscosity, and the strength and frequency of its dielectric relaxation. They found that all dispersions exhibit the expected temperature dependencies with regard to their physical properties.

They also investigated the dependence of physical characteristics on nanotube concentration, which is still the subject of several contradicting reports. For increasing nanotube concentration, they observed a decrease in tilt angle, but an increase in spontaneous polarisation. This phenomenon explains the enhancement of the so-called bilinear coupling coefficient between tilt angle and spontaneous polarisation. Despite the increase in polarisation, the electro-optic response times slow down, which suggests an increase in rotational viscosity along the tilt cone. This phenomenon also accounts for the observed decrease in dielectric relaxation frequency for increasing nanotube concentration.


Story Source:

The above story is based on materials provided by Springer Science+Business Media. Note: Materials may be edited for content and length.


Journal Reference:

  1. M. Yakemseva, I. Dierking, N. Kapernaum, N. Usoltseva, F. Giesselmann. Dispersions of multi-wall carbon nanotubes in ferroelectric liquid crystals. The European Physical Journal E, 2014; 37 (2) DOI: 10.1140/epje/i2014-14007-4

Cite This Page:

Springer Science+Business Media. "Making the most of carbon nanotube-liquid crystal combos." ScienceDaily. ScienceDaily, 2 April 2014. <www.sciencedaily.com/releases/2014/04/140402095452.htm>.
Springer Science+Business Media. (2014, April 2). Making the most of carbon nanotube-liquid crystal combos. ScienceDaily. Retrieved March 3, 2015 from www.sciencedaily.com/releases/2014/04/140402095452.htm
Springer Science+Business Media. "Making the most of carbon nanotube-liquid crystal combos." ScienceDaily. www.sciencedaily.com/releases/2014/04/140402095452.htm (accessed March 3, 2015).

Share This


More From ScienceDaily



More Matter & Energy News

Tuesday, March 3, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Forensic Holodeck Creates 3D Crime Scenes

Forensic Holodeck Creates 3D Crime Scenes

Reuters - Innovations Video Online (Mar. 3, 2015) A holodeck is no longer the preserve of TV sci-fi classic Star Trek, thanks to researchers from the Institute of Forensic Medicine Zurich, who have created what they say is the first system in the world to visualise the 3D data of forensic scans. Jim Drury saw it in operation. Video provided by Reuters
Powered by NewsLook.com
Solar Plane Passes New Test Ahead of World Tour

Solar Plane Passes New Test Ahead of World Tour

AFP (Mar. 2, 2015) A solar-powered plane made a third successful test flight in the United Arab Emirates on Monday ahead of a planned round-the-world tour to promote alternative energy. Duration: 01:05 Video provided by AFP
Powered by NewsLook.com
Electric Hydrofoiling Watercraft Delivers Eco-Friendly Thrills

Electric Hydrofoiling Watercraft Delivers Eco-Friendly Thrills

Reuters - Innovations Video Online (Mar. 2, 2015) The Quadrofoil is a high-tech electric personal watercraft that its makers call a &apos;sports car for the water&apos;. When it hits 10 km/h, the Slovenian-engineered Quadrofoil is lifted above the water onto four wing-like hydrofoils where it &apos;flies&apos; above the surface with minimal water resistance. Matthew Stock reports. Video provided by Reuters
Powered by NewsLook.com
Everything You Need To Know About Mobile Payments In 2015

Everything You Need To Know About Mobile Payments In 2015

Newsy (Mar. 2, 2015) This year, mobile payments might finally catch on. Here are the things you need to know to stay on top of the latest developments. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins