Influence of mechanical stress on electron field emission of multiwalled carbon nanotube–polymer composites

Author(s):  
C. H. P. Poa ◽  
R. C. Smith ◽  
S. R. P. Silva ◽  
C. Q. Sun
2012 ◽  
Vol 1407 ◽  
Author(s):  
Hai H. Van ◽  
Mei Zhang ◽  
Ben Wang ◽  
Chuck Zhang

ABSTRACTA new type of cathode for electron field emission (FE) was fabricated. The cathode was made from ultra-thin multiwalled carbon nanotube (CNT) sheets. These sheets were drawn directly from a CNT forest, stacked layer-by-layer together and densified by isopropyl alcohol. CNT emitters were formed by utilizing laser beam to cut the sheet. The FE performance of the proposed devices has been enhanced dramatically. The threshold field for electron emission (at which the emission current is 10 mA/cm2) was 0.88 V/μm. The current density of 36 A/cm2 was achieved at the electric field of 2 V/μm. The enhanced performance is the result of the thin, uniformly distributed and aligned array of the CNT emitters.


2004 ◽  
Vol 85 (19) ◽  
pp. 4487 ◽  
Author(s):  
M. Sveningsson ◽  
R. E. Morjan ◽  
O. A. Nerushev ◽  
Eleanor E.B. Campbell ◽  
D. Malsch ◽  
...  

Carbon ◽  
2010 ◽  
Vol 48 (1) ◽  
pp. 41-46 ◽  
Author(s):  
Alexander A. Kuznetzov ◽  
Sergey B. Lee ◽  
Mei Zhang ◽  
Ray H. Baughman ◽  
Anvar A. Zakhidov

2017 ◽  
Vol 17 (8) ◽  
pp. 5445-5452 ◽  
Author(s):  
Krisztian Nemeth ◽  
Levente Kovacs ◽  
Balazs Reti ◽  
Karoly Belina ◽  
Klara Hernadi

Crystals ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 398 ◽  
Author(s):  
Yongcun Zhou ◽  
Xiao Zhuang ◽  
Feixiang Wu ◽  
Feng Liu

Polymer composites with high thermal conductivity have a great potential for applications in modern electronics due to their low cost, easy process, and stable physical and chemical properties. Nevertheless, most polymer composites commonly possess unsatisfactory thermal conductivity, primarily because of the high interfacial thermal resistance between inorganic fillers. Herein, we developed a novel method through silver functionalized graphene nanosheets (GNS) and multiwalled carbon nanotube (MWCNT) composites with excellent thermal properties to meet the requirements of thermal management. The effects of composites on interfacial structure and properties of the composites were identified, and the microstructures and properties of the composites were studied as a function of the volume fraction of fillers. An ultrahigh thermal conductivity of 12.3 W/mK for polymer matrix composites was obtained, which is an approximate enhancement of 69.1 times compared to the polyvinyl alcohol (PVA) matrix. Moreover, these composites showed more competitive thermal conductivities compared to untreated fillers/PVA composites applied to the desktop central processing unit, making these composites a high-performance alternative to be used for thermal management.


2005 ◽  
Vol 87 (10) ◽  
pp. 103112 ◽  
Author(s):  
R. C. Smith ◽  
D. C. Cox ◽  
S. R. P. Silva

Sign in / Sign up

Export Citation Format

Share Document