4 years ago

Giant Thermal Rectification from Single-Carbon Nanotube–Graphene Junction

Giant Thermal Rectification from Single-Carbon Nanotube–Graphene Junction
Bingyang Cao, Dapeng Yu, Xueming Yang
We describe the influence of the geometry parameters on the thermal rectification of single-carbon nanotube–graphene junction. The two-dimensional (2D) distribution of the thermal rectification with respect to the tube length and the side length of the graphene nanosheet are calculated and visualized. The maximum thermal rectification ratios of the designed single-carbon nanotube–graphene junction can reach 1244.1% and 1681.6% at average temperatures of 300 and 200 K, respectively. These values are much higher than those reported for single-material nanostructure-based thermal rectifiers. The thermal rectification ratios of the nanotube–graphene junction are fairly sensitive to geometry size and are almost entirely dominated by the degree of overlap of the power spectra under negative thermal bias. These findings could offer useful guidelines for the design and performance improvement of thermal diodes.

Publisher URL: http://dx.doi.org/10.1021/acsami.7b04464

DOI: 10.1021/acsami.7b04464

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.