Laminated, microfluidic-integrated carbon nanotube based biosensors

Tey, Ju Nie; Wijaya, I Putu Mahendra; Wang, Zongbin; Goh, Wei Hau; Palaniappan, Alagappan; Mhaisalkar, Subodh G.; Rodriguez, Isabel; Dunham, Simon; Rogers, John A.
January 2009
Applied Physics Letters;1/5/2009, Vol. 94 Issue 1, p013107
Academic Journal
In this communication, a laminated, flexible, microfluidic-integrated, all CNT based liquid-gated transistor and biosensor are reported that comprises single walled CNTs for both the semiconducting channel as well as the contact electrodes. The proposed architecture eliminates the need for lithography, electrode definition processes, and also circumvents substrate surface compatibility issues. Real-time detection of 1 pM poly-L-lysine in a liquid-gated transistor comprising only two materials, single walled CNTs and polydimethoxysilane substrate with microfluidic channel, is demonstrated.


Related Articles

  • Deformable transparent all-carbon-nanotube transistors. Aikawa, Shinya; Einarsson, Erik; Thurakitseree, Theerapol; Chiashi, Shohei; Nishikawa, Eiichi; Maruyama, Shigeo // Applied Physics Letters;2/6/2012, Vol. 100 Issue 6, p063502 

    We fabricated polymer-laminated, transparent, all-carbon-nanotube field-effect transistors (CNT-FETs), making use of the flexible yet robust nature of single-walled carbon nanotubes (SWNTs). All components of the FET (active channel, electrodes, dielectric layer, and substrate) consist of...

  • Trimethylamine biosensor based on pentacene enzymatic organic field effect transistor. Diallo, A. K.; Tardy, J.; Zhang, Z. Q.; Bessueille, F.; Jaffrezic-Renault, N.; Lemiti, M. // Applied Physics Letters;6/29/2009, Vol. 94 Issue 26, p263302 

    This paper reports on an enzymatic organic field effect transistor based biosensor dedicated to the detection of trimethylamine, in view of fish freshness assessment. Flexible devices were processed on Kapton substrate with pentacene as organic semiconductor and Parylene-C as top gate...

  • Current on/off ratio enhancement of field effect transistors with bundled carbon nanotubes. Feng, Y.; Lee, K.; Farhat, H.; Kong, J. // Journal of Applied Physics;Nov2009, Vol. 106 Issue 10, p104505-1 

    This work examines the enhancement of current on/off ratio in field effect transistor devices with bundled single-walled carbon nanotubes (CNTs) by incorporating a substrate etching step before the electrical cutting for metallic CNT elimination. The etching step prevents the damaging of the...

  • Analysis of hopping conduction in semiconducting and metallic carbon nanotube devices. Perello, David J.; Yu, Woo Jong; Bae, Dong Jae; Chae, Seung Jin; Kim, M. J.; Lee, Young Hee; Yun, Minhee // Journal of Applied Physics;Jun2009, Vol. 105 Issue 12, p124309 

    Single-walled carbon nanotube field-effect transistors were irradiated with 20 keV electrons using an e-beam lithography exposure method. Analysis of conduction data in the temperature range from 25 to 300 K indicated the creation of insulating regions containing traps along the nanotube...

  • Carbon nanotube biosensors: The critical role of the reference electrode. Minot, Ethan D.; Janssens, Anne M.; Heller, Iddo; Heering, Hendrik A.; Dekker, Cees; Lemay, Serge G. // Applied Physics Letters;8/27/2007, Vol. 91 Issue 9, p093507 

    Carbon nanotube transistors show tremendous potential for electronic detection of biomolecules in solution. However, the nature and magnitude of the sensing signal upon molecular adsorption have so far remained controversial. Here, the authors show that the choice of the reference electrode is...

  • A Study of Deterministic Positioning of Carbon Nanotubes by Dielectrophoresis. Arun, A.; Salet, P.; Ionescu, A. M. // Journal of Electronic Materials;Jun2009, Vol. 38 Issue 6, p742 

    A self-limiting dielectrophoresis technique, aimed at deterministically assembling individual or bundles of single-walled carbon nanotubes (SWCNTs) and multiwalled carbon nanotubes (MWCNTs), is experimentally investigated. A limiting resistor is used to control the electric field after the...

  • Electrical conductance of carbon nanotubes with misaligned ends. Pantano, Antonio; Muratore, Giuseppe; Montinaro, Nicola // Journal of Nanoparticle Research;Sep2013, Vol. 15 Issue 9, p1 

    During a manufacturing process, when a straight carbon nanotube is placed on a substrate, e.g., production of transistors, its two ends are often misaligned. In this study, we investigate the effects of multiwall carbon nanotubes' (MWCNTs) outer diameter and chirality on the change in...

  • Comparison of sensitivities of carbon nanotube field-effect transistor biosensors with and without top metal gate. Abe, Masuhiro; Murata, Katsuyuki; Ataka, Tatsuaki; Matsumoto, Kazuhiko // Journal of Applied Physics;Nov2008, Vol. 104 Issue 10, p104304 

    The sensitivities of biosensors using top-gate-type carbon nanotube field-effect transistors (CNT-FETs) with and without a top metal gate were compared. The CNT-FET biosensor without the top metal gate (sensor I) showed about three times higher transconductance than the one with the top metal...

  • Tin Oxide Nanorod Array-Based Electrochemical Hydrogen Peroxide Biosensor. Jinping Liu; Yuanyuan Li; Xintang Huang; Zhihong Zhu // Nanoscale Research Letters;Jul2010, Vol. 5 Issue 7, p1177 

    SnO2 nanorod array grown directly on alloy substrate has been employed as the working electrode of H2O2 biosensor. Single-crystalline SnO2 nanorods provide not only low isoelectric point and enough void spaces for facile horseradish peroxidase (HRP) immobilization but also numerous conductive...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics