Direct measurement of charge transport through helical poly(ethyl propiolate) nanorods wired into gaps in single walled carbon nanotubes

Download

Date

2009-03-11

Author

Wang, Nan
Yano, Koji
Durkan, Colm
Plank, Natalie
Welland, Mark E.
Zhang, Yan
Ünalan, Hüsnü Emrah
Mann, Mark
Amaratunga, G. A. J.
Milne, William I.

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

81
views

0
downloads

We report the direct measurement of electrical transport through rod-like polymer molecules, of poly(ethyl propiolate) (PEP), utilizing single walled carbon nanotubes (SWNTs) as electrodes. The electrical properties of the devices were measured (i) before cutting a SWNT, (ii) when a SWNT was cut and (iii) after PEP deposition into the nanoscale gap in a cut SWNT. The gate-dependent electrical properties showed a reduction in current from I-on = 2.4 x 10(-7) A for SWNT devices to I-on = 3.6 x 10(-9) A for PEP bridge devices, both with the ON/OFF ratio of 10(4). Similarly, metallic SWNT devices showed a reduction in current from a few hundreds of mu A for a SWNT device to a few nA for a PEP-SWNT structure. The current density of a single PEP molecule is 10(5)-10(6) A cm(-2), which is relatively high, indicating that the PEP molecule can carry significant current. Use of SWNT electrodes was seen to be an effective method of contacting PEP nanorods to facilitate electrical measurements.

Subject Keywords

Mechanical Engineering, Electrical and Electronic Engineering, General Materials Science, Mechanics of Materials, Bioengineering, General Chemistry

URI

https://hdl.handle.net/11511/36546

Journal

NANOTECHNOLOGY

DOI

https://doi.org/10.1088/0957-4484/20/10/105201

Collections

Department of Metallurgical and Materials Engineering, Article

Suggestions

OpenMETU
Core

Irreversible blocking of ion channels using functionalized single-walled carbon nanotubes Chhowalla, M; Ünalan, Hüsnü Emrah; Wang, YB; Iqbal, Z; Park, K; Sesti, F (IOP Publishing, 2005-12-01) We demonstrate irreversible blocking of ion channels using single-wall carbon nanotubes (SWNTs) functionalized with 2-aminoethylmethane thiosulfonate (MTSET). In contrast, as-produced and purified SWNTs exhibit reversible blocking, indicating that the MTSET molecule attached to SWNTs chemically interacts with the cysteine groups in the ion channels. Functionalization of SWNTs with MTSET is inferred from Fourier transform infrared (FTIR) spectroscopy, which clearly shows absorptions due to -CH stretching and...
Silicon nanowire-silver indium selenide heterojunction photodiodes KULAKCI, Mustafa; ÇOLAKOĞLU, Tahir; OZDEMİR, Baris; Parlak, Mehmet; Ünalan, Hüsnü Emrah; Turan, Raşit (IOP Publishing, 2013-09-20) Structural and optoelectronic properties of silicon (Si) nanowire-silver indium selenide (AgInSe2) thin film heterojunctions were investigated. The metal-assisted etching method was employed to fabricate vertically aligned Si nanowire arrays. Stoichiometric AgInSe2 films were then deposited onto the nanowires using co-sputtering and sequential selenization techniques. It was demonstrated that the three-dimensional interface between the Si nanowire arrays and the AgInSe2 thin film significantly improved the ...
An on-die ultra-low voltage DC-DC step-up converter with voltage doubling LC-tank Jayaweera, H. M. P. C.; Pathirana, W. P. M. R.; Muhtaroglu, Ali (IOP Publishing; 2016-12-01) In this paper we report the design, characterization and verification of a novel on-die ultra-low voltage DC-DC converter circuit for energy harvester applications in 0.18 mu m complementary metal oxide semiconductor (CMOS) technology. The circuit self-starts, does not use off-chip components, and is thus suitable for use in highly integrated low cost systems. The first version of the design has a five-stage charge-pump stimulated by an oscillator with two center-tap inductors. It is validated on a test chi...
The quantum confined Stark effect in silicon nanocrystals Kulakci, Mustafa; SERİNCAN, UĞUR; Turan, Raşit; Finstad, Terje G. (IOP Publishing, 2008-11-12) The quantum confined Stark effect (QCSE) in Si nanocrystals embedded in a SiO(2) matrix is demonstrated by photoluminescence (PL) spectroscopy at room and cryogenic temperatures. It is shown that the PL peak position shifts to higher wavelengths with increasing applied electric field, which is expected from carrier polarization within the quantum dots. It is observed that the effect is more pronounced at lower temperatures due to the improved carrier localization at the lowest energy states of the quantum d...
Method for Dynamic Material Property Characterization of Soft-Tissue-Mimicking Isotropic Viscoelastic Materials Using Fractional Damping Models Martin, Bryn A.; Kutluay, Umit; Yazıcıoğlu, Yiğit (ASTM International, 2013-09-01) Characterization of the mechanical properties of human-tissue-mimicking silicone elastomers is important for producing accurate tissue models for experimentation. However, the viscoelastic and frequency-dependent material properties of elastomers are difficult to quantify. We present a material characterization technique for a silicone elastomer used to mimic human soft tissue based on generalized-Maxwell-type material models with and without fractional dissipating mechanisms. The silicone specimens were pr...

Citation Formats

N. Wang et al., “Direct measurement of charge transport through helical poly(ethyl propiolate) nanorods wired into gaps in single walled carbon nanotubes,” NANOTECHNOLOGY, pp. 0–0, 2009, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/36546.