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Interactions Between Carbon Nanotubes and Bacteria

Published online by Cambridge University Press:  01 February 2011

Pavan M. V. Raja ,
Pulickel M. Ajayan ,
Omkaram Nalamasu  and
Anurag Sharma
Pavan M. V. Raja
Affiliation:
rajap@rpi.edu, Rensselaer Polytechnic Institute, Chemical and Biological Engineering, CII 9015 - CIE, 110 8th Street, Troy, NY, 12180, United States
Pulickel M. Ajayan
Affiliation:
ajayan@rpi.edu, Rensselaer Polytechnic Institute, Materials Science and Engineering, Troy, NY, 12180, United States
Omkaram Nalamasu
Affiliation:
nalamasu@rpi.edu, Rensselaer Polytechnic Institute, Center for Integrated Electronics, Troy, NY, 12180, United States
Anurag Sharma
Affiliation:
anurag_sharma@rpi.edu, Rensselaer Polytechnic Institute, Earth and Environmental Sciences, Troy, NY, 12180, United States
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Abstract

While carbon nanotubes (CNTs) possess diverse application potential ranging from polymer nanocomposites to nanostructured therapeutic devices, their environmental implications are still not well understood. In this study, we conducted experiments to monitor changes in bacterial physiology as a consequence of interactions with the CNTs. Our experiments included a common anaerobe, Escherichia coli, in an SWNT system as a model for understanding the environmental implications of CNTs. Observations over several weeks indicated that the bacteria in the presence of SWNTs showed significant morphological changes, that included elongation. It is interesting to note that similar morphological changes have been reported in response to extreme temperature and pressure, chemical agents, and quantum dots. In this presentation, the authors will present further physiological evidence, such as bacterial growth and substrate consumption rates, towards defining a possible bacteria-CNT interaction model consistent with these experimental observations, and will discuss the overall environmental implications.

Keywords

nanoscalebiologicalmorphology
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 953: Symposium G – Fibrillar Aggregates as Materials—Assembly, Properties and Applications , 2006 , 0953-G01-08
Copyright
Copyright © Materials Research Society 2007

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