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Title: Single-ion adsorption and switching in carbon nanotubes

Journal Article · · Nature Communications
DOI:https://doi.org/10.1038/ncomms10475· OSTI ID:1242979
 [1];  [1];  [1];  [1];  [2];  [2]
  1. The Aerospace Corp., Segundo, CA (United States)
  2. Univ. of Southern California, Los Angeles, CA (United States)

Single-ion detection has, for many years, been the domain of large devices such as the Geiger counter, and studies on interactions of ionized gasses with materials have been limited to large systems. To date, there have been no reports on single gaseous ion interaction with microelectronic devices, and single neutral atom detection techniques have shown only small, barely detectable responses. Here we report the observation of single gaseous ion adsorption on individual carbon nanotubes (CNTs), which, because of the severely restricted one-dimensional current path, experience discrete, quantized resistance increases of over two orders of magnitude. Only positive ions cause changes, by the mechanism of ion potentialinduced carrier depletion, which is supported by density functional and Landauer transport theory. Lastly, our observations reveal a new single-ion/CNT heterostructure with novel electronic properties, and demonstrate that as electronics are ultimately scaled towards the one-dimensional limit, atomic-scale effects become increasingly important.

Research Organization:
Univ. of Southern California, Los Angeles, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
FG02-07ER46376
OSTI ID:
1242979
Journal Information:
Nature Communications, Vol. 7; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 23 works
Citation information provided by
Web of Science

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Cited By (4)

Field Effect Transistor Based on Solely Semiconducting Single-Walled Carbon Nanotubes for the Detection of 2-Chlorophenol journal July 2017
Room-Temperature Phototransistor with Negative Photoresponsivity of 10 8 A W −1 Using Fullerene-Sensitized Aligned Carbon Nanotubes journal September 2018
Prospects for Bioinspired Single-Photon Detection Using Nanotube-Chromophore Hybrids journal March 2019
Chemically Enhanced Polymer-Coated Carbon Nanotube Electronic Gas Sensor for Isopropyl Alcohol Detection journal June 2018