Aligned carbon nanotube-polymer hybrid architectures for diverse flexible electronic applications |
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Authors: | Jung Yung Joon Kar Swastik Talapatra Saikat Soldano Caterina Viswanathan Gunaranjan Li Xuesong Yao Zhaoling Ou Fung Suong Avadhanula Aditya Vajtai Robert Curran Seamus Nalamasu Omkaram Ajayan Pulickel M |
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Affiliation: | Department of Mechanical and Industrial Engineering, Northeastern University, Boston, Massachusetts 02115, USA. jungy@coe.neu.edu |
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Abstract: | We present the fabrication and electrical characterization of a flexible hybrid composite structure using aligned multiwall carbon nanotube arrays in a poly(dimethylsiloxane) (PDMS) matrix. Using lithographically patterned nanotube arrays, one can make these structures at any length scale from submicrometer levels to bulk quantities. The PDMS matrix undergoes excellent conformal filling within the dense nanotube network, giving rise to extremely flexible conducting structures with unique electromechanical properties. We demonstrate its robustness against high stress conditions, under which the composite is found to retain its conducting nature. We also demonstrate that these structures can be utilized directly as flexible field-emission devices. Our devices show some of the best field-enhancement factors and turn-on electric fields reported so far. |
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