TY - JOUR
T1 - Ultrafast and highly localized microwave heating in carbon nanotube multilayer thin films
AU - Haile, M
AU - Sweeney, C
AU - Lackey, B
AU - Sarwar, O
AU - Henderson, R
AU - Saed, Mohammad
AU - Green, M
AU - Grunlan, J
N1 - Funding Information:
M.H. and C.B.S. contributed equally to this work. The authors would like the thank the Texas A&M Engineering Experiment Station (TEES) for financial support of this work. The authors would also like to thank the staff at the Materials Characterization Facility at Texas A&M University for their expertise and support. Additionally, this material is based upon work supported by the U.S. National Science Foundation (CMMI-1561988) and by the U. S. Army Research Office under contract/grant W911NF-15-1-0039. The authors gratefully acknowledge financial support from the U.S. Air Force Office of Scientific Research (Grant No. FA9550-13-1-0085).
Publisher Copyright:
© 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2017/8/7
Y1 - 2017/8/7
N2 - Carbon nanotubes have emerged as highly effective materials for microwave absorbing applications due to their high electrical conductivity, large aspect ratio, and high temperature stability against oxidation and corrosion. Ultrathin films are fabricated through layer-by-layer deposition of carbon nanotubes and poly(diallyldimethyl ammonium chloride) from aqueous suspensions under ambient conditions. The number of immersion cycles controls the assembled thickness of these coatings, which provides an effective means of precisely tailoring their electrical properties and thermal response to microwaves. Films of thickness below 200 nm are capable of heating to high temperatures when irradiated with low microwave power, reaching over 130 °C in 30 s, at less than 10 W forward power, and rapidly cooling when the power is removed. In contrast to metal thin films, the multilayer carbon nanotube films are active microwave absorbers over a wide range of thickness, making them interesting for applications such as electromagnetic interference shielding and microwave welding.
AB - Carbon nanotubes have emerged as highly effective materials for microwave absorbing applications due to their high electrical conductivity, large aspect ratio, and high temperature stability against oxidation and corrosion. Ultrathin films are fabricated through layer-by-layer deposition of carbon nanotubes and poly(diallyldimethyl ammonium chloride) from aqueous suspensions under ambient conditions. The number of immersion cycles controls the assembled thickness of these coatings, which provides an effective means of precisely tailoring their electrical properties and thermal response to microwaves. Films of thickness below 200 nm are capable of heating to high temperatures when irradiated with low microwave power, reaching over 130 °C in 30 s, at less than 10 W forward power, and rapidly cooling when the power is removed. In contrast to metal thin films, the multilayer carbon nanotube films are active microwave absorbers over a wide range of thickness, making them interesting for applications such as electromagnetic interference shielding and microwave welding.
KW - carbon nanotubes
KW - layer-by-layer
KW - microwave absorption
KW - multilayers
KW - thin films
UR - http://www.scopus.com/inward/record.url?scp=85019204623&partnerID=8YFLogxK
U2 - 10.1002/admi.201700371
DO - 10.1002/admi.201700371
M3 - Article
VL - 4
JO - Advanced Materials Interfaces
JF - Advanced Materials Interfaces
IS - 15
M1 - 1700371
ER -