NDLI: Ultrananocrystalline diamond: New opportunities for the fabrication of novel sensors

Content Provider	IEEE Xplore Digital Library
Author	Sumant, A.V.
Copyright Year	2013
Description	Author affiliation: Center for Nanoscale Mater., Argonne Nat. Lab., Argonne, IL, USA (Sumant, A.V.)
Abstract	The ultrananocrystallne diamond (UNCD) thin films are generally characterized by their small grain size (2-5 nm) with about 98% of the carbon atoms present in the $sp^{3}$ bonded configuration and rest of the carbon atoms residing at the atomically abrupt grain boundaries mostly in mixed $sp^{3}$ and $sp^{2}$ configuration. Previous studies carried out by our group have shown that the UNCD thin film has excellent chemical, mechanical, and electrical properties. The electrical conductivity of the UNCD thin films can be altered significantly by introducing impurities (such as nitrogen or boron) during the growth. Our recent work has demonstrated that the UNCD thin films can be carved into quasi-1 dimensional nanowires using a top-down nano fabrication process. I will discuss how the impurity presence (nitrogen or boron) and its location (within grain or grain boundary) can significantly affect the resistance of UNCD nanowires as a function of gas adsorption and pressure. This effect could be exploited further for developing extremely sensitive gas and pressure/displacement sensors. We believe that these results will open-up new opportunities and possibilities for the fabrication of novel UNCD-based sensors with increased sensitivity and new functionalities for a variety of applications.
Starting Page	1
Ending Page	1
File Size	117432
Page Count	1
File Format	PDF
ISBN	9781467346429
ISSN	19300395
DOI	10.1109/ICSENS.2013.6688447
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-11-03
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Diamonds Fabrication Sensors Nanowires Nanoscale devices Diamond-like carbon nanowire Ultrananocrystalline diamond
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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