Sensing single molecules with carbon–boron-nitride nanotubes

  title={Sensing single molecules with carbon–boron-nitride nanotubes},
  author={Laith A. Algharagholy and Thomas Pope and Qusiy H. Al-Galiby and Hatef Sadeghi and Steven Bailey and Colin J. Lambert},
  journal={Journal of Materials Chemistry C},
We investigate the molecular sensing properties of carbon nanotube–boron nitride–carbon nanotube (CNT–BN–CNT) junctions. We demonstrate that the electrical conductance of such a junction changes in response to the binding of an analyte molecule to the region of BN. The change in conductance depends on the length of the BN spacer and the position of the analyte and therefore we propose a method of statistically analysing conductance data. We demonstrate the ability to discriminate between… 
7 Citations
Selective sensing of 2,4,6-trinitrotoluene and triacetone triperoxide using carbon/boron nitride heteronanotubes
Abstract The detection of reactive compounds represents a significant challenge. Here we demonstrate that heteronanotubes formed by covalently bonded carbon (CNT) and boron nitride (BN) nanotubes can
Electronic transport properties of heterojunction devices constructed by single-wall Fe2Si and carbon nanotubes
The electronic structures of the armchair Fe2Si nanotubes are calculated by using the SGGA+U method. Novel heterostructure devices are prepared composed of single-wall Fe2Si nanotubes (Fe2Si NTs) and
The diverse electronic properties of C/BN heteronanotubes with polar discontinuity
Linear interfaces from within the heteronanotubes between carbon nanotubes (CNTs) and h-BN nanotubes (BNNTs) introduce unexpected electronic and spintronic properties that are different from
Doping engineering of thermoelectric transport in BNC heteronanotubes.
The results show that the electron transmission is reduced and the electronic bandgap increased as a function of the BN concentration for different doping distribution patterns, so that (6,6)-BNC heteronanotubes become semiconducting with a tunable bandgap.
Theory of molecular scale thermoelectricity
In this thesis we use a combination of density functional theory and equilibrium Green’s function to study thermoelectricity in molecular scale. We have aimed to improve the efficiency of single
Improvement of accuracy in the wave-function-matching method for transport calculations
The wave-function-matching (WFM) technique for first-principles transport-property calculations was modified by S\o{}rensen {\it et al.} so as to exclude rapidly decreasing evanescent waves


Enzyme-Coated Carbon Nanotubes as Single-Molecule Biosensors
We demonstrate the use of individual semiconducting single-wall carbon nanotubes as versatile biosensors. Controlled attachment of the redox enzyme glucose oxidase (GOx) to the nanotube sidewall is
Ab Initio Study of Doped Carbon Nanotube Sensors
Recently great advances have been made in demonstrating the viability of using carbon nanotubes (CNTs) to detect the presence of chemical gases such as NO2, NH3, and O2, and they have led to the
Boron Nitride Nanotubes
Electron energy-loss spectroscopy on individual tubes yielded B:N ratios of approximately 1, which is consistent with theoretical predictions of stable BN tube structures.
Perfectly dissolved boron nitride nanotubes due to polymer wrapping.
We report for the first time that boron nitride nanotubes (BNNTs) may be dissolved in organic solvents by wrapping them with a polymer. Transmission electron microscopy and cathodoluminescence
Boron nitride nanotubes and nanosheets.
This review gives an introduction to the rich BN nanotube/nanosheet field, including the latest achievements in the synthesis, structural analyses, and property evaluations, and presents the purpose and significance of this direction in the light of the general nanotubes/ nanosheet developments.
Measurement of Single-Molecule Resistance by Repeated Formation of Molecular Junctions
The conductance of a single molecule connected to two gold electrodes was determined by repeatedly forming thousands of gold-molecule-gold junctions. Conductance histograms revealed well-defined
Electronic and field emission properties of boron nitride/carbon nanotube superlattices
BN/C nanotube superlattices are quasi one-dimensional heterostructures that show unique physical properties derived from their peculiar geometry. Using state-of-the-art ab initio calculations, we
Pure and doped boron nitride nanotubes
More than ten years ago, it was suggested theoretically that boron nitride (BN) nanotubes could be produced. Soon after, various reports on their synthesis appeared and a new area of nanotube science
Logic Circuits with Carbon Nanotube Transistors
This work demonstrates logic circuits with field-effect transistors based on single carbon nanotubes that exhibit a range of digital logic operations, such as an inverter, a logic NOR, a static random-access memory cell, and an ac ring oscillator.
Single Silver Nanoparticles as Real-Time Optical Sensors with Zeptomole Sensitivity
This work utilizes dark-field optical microscopy to demonstrate the localized surface plasmon resonance λmax response of individual Ag nanoparticles to the formation of a monolayer of small-molecule