Carbon Nanotubes (CNTs) Dipl.-Ing. Nicolas Souza Funktionswerkstoffe II

APPLICATIONS

Colloids - FuWe research Printed electronics Colloids - FuWe research Conductive polymer/CNT inks Metal nanoparticles/CNT inks Colloidal CNT inks Denneulin A. et al., Carbon 49 (2011) 2603 Kordas K. et al., Small 2 (2006) 1021

Reinforced composites Colloids - FuWe research Metal matrix composites Trinh V. et al., Adv. Nat. Sci.: Nanosci. Nanotechnol. 2 (2011) 015006

Reinforced composites Colloids - FuWe research Ceramic matrix composites Zhan G. et al., Nature materials 2 (2003) 38

Electronic bridge Single tube Semiconductor-enriched SWNTs are usable in thin-film FETs (TFT) High switching ratios can be achieved (app. 103) and high drive currents (>1 mA) They deliver strong photocurrents They are both photoluminescent and electroluminescent. These high performance semiconducting SWNT FETs also have demonstrated operating frequencies up to 80 GHz (109 operations per second). Wang C. et al., NanoLetters 9 (2009) 4285

CNT Yarns Yarn

Artificial muscles Yarn Aerogel-like material 1.5 mg/cm3 Operates in a wide temperature range (80-1900 K) Aliev A. et al., Science, 323 (2009) 1575 Air density: 1.225 mg/cm3 Mars temp. range: 130 to 300 K Mercury temp. range : 100 to 700 K Moon temp. range : 40 to 400 K

Artificial muscles Yarn Testing Production

Space elevator Forest

Field emission Forest Diode structure with HV regulation Meyyappan, Carbon nanotubes – science and applications pg. 196 Triode structure with gate current regulation

Flexible displays Forest broad range of conductivity (10-107 W/sq) • uniform and linear conductance • excellent transparency • low reflectivity • good adhesion • durability • abrasion resistance • good chemical resistance • flexibility • ease of patterning

Electrical contacts Forest CNT layer Copper Park M. et al. Nanotechnology 17 (2006) 2294–2303 80% reduction in contact resistance. Resistance α-1 contact force  small-scale force sensor.

Electrical contacts Forest Park 254

Optical absorption – e.g. Solar collectors Forest Vivekchand S. et al., Chem. Phys. Let. 386 (2004) 313-318

Flexible mobile phone Graphene + CNT High speed electronic response Self-cleaning surface No-scratch flexible display

Federico Lasserre, Zimmer 2.11 f.lasserre@mx.uni-saarland.de +49 681 302 70538