Flexoelectricity and charge separation in carbon nanotubes.

08:00 EDT 10th March 2020 | BioPortfolio

Summary of "Flexoelectricity and charge separation in carbon nanotubes."

The effect of flexoelectric voltage on the electronic and optical properties of single- and double-wall carbon nanotubes is evaluated by the first-principles calculations. The voltage between the inner channel of curved carbon nanostructures and their surroundings scales linearly with nanotube wall curvature and can be boosted/reversed by appropriate outer wall functionalization. We predict and verify computationally that in double-wall nanotubes, flexoelectricity causes a straddling to staggered band gap transition. Accurate band structure calculations taking into account quasiparticle corrections and excitonic effects lead to an estimated critical diameter of ~24 Å for this transition. Double-wall nanotubes above this diameter have staggered band alignment and could be potentially used for charge separation in photovoltaic devices.


Journal Details

This article was published in the following journal.

Name: Nano letters
ISSN: 1530-6992


DeepDyve research library

PubMed Articles [7074 Associated PubMed Articles listed on BioPortfolio]

Preparation of tubular forest-like and other carbon structures using distinct carbon sources and catalyst concentrations.

In this work, various carbon nanotubes (MWCNTs) were synthetized by spray pyrolysis method. Resulting nanoforest-like and bamboo-like carbon nanotubes, as well as Y-junctions of carbon nanotubes, poss...

Nitrogen-rich graphitic carbon nitride nanotubes for photocatalytic hydrogen evolution with simultaneous contaminant degradation.

Graphitic carbon nitride (g-CN) has aroused great concern since it applied to the photocatalytic process. However, the inherent shortcomings of bulk g-CN, such as small active surface area, low separa...

Separation of Specific Single Enantiomer Single-Wall Carbon Nanotubes in the Large Diameter Regime.

Enantiomer level isolation of single-wall carbon nanotubes (SWCNTs) in high concentration and purity for nanotubes greater than 1.1 nm in diameter is demonstrated using a two-stage aqueous two-phase e...

Phononic thermal transport properties of C3N nanotubes.

Reverse non-equilibrium molecular dynamics (RNEMD) is employed to study the phononic thermal transport properties of CN nanotubes. We study the effect of nanotube length and diameter on the thermal co...

Photoelectrochemical Solar water splitting: the role of the carbon nano materials in bismuth vanadate composite photoanodes towards efficient charge separation and transport.

Photoelectrochemical performance of bismuth vanadate (BiVO4) photoanode is limited by poor charge separation and transport properties. The role of carbon nanotube, reduced graphene oxide or graphitic ...

Clinical Trials [933 Associated Clinical Trials listed on BioPortfolio]

Anterior Component Separation Versus Posterior Component Separation for Repair of Large Ventral Hernias

This study evaluates effect of anterior component separation and posterior component separation and transversus abdominis muscle release methods for treatment of midline ventral hernias.

TAFF-Psychological Treatment of Separation Anxiety Disorder

The purpose of this study is to determine whether a specific family based cognitive behavioral treatment program is effective in the treatment of children with separation anxiety disorder.

Safety and Tolerability Study of Inhaled Carbon Monoxide in Kidney Transplant Patients

The purpose of this study is to evaluate the safety and tolerability of two carbon monoxide doses when administered as an inhaled gas for 1 hour in patients receiving kidney transplants.

The Cyclocapnic Method for Measurement of Chemosensitivity

We aim to test our method for measuring chemosensitivity (the ventilatory response to a change in carbon dioxide), which uses sinusoidal carbon dioxide stimuli. Hypotheses: - Ca...

Comparing Blood Loss During Caesarean Section Between Manual Separation of Placenta & Conservative Management

to compare the blood loss during caesarean section between two different methods of separating the placenta after fetal extraction, keeping in mind that most blood loss occurs after placen...

Medical and Biotech [MESH] Definitions

Nanometer-sized tubes composed of various substances including carbon (CARBON NANOTUBES), boron nitride, or nickel vanadate.

Nanometer-sized tubes composed mainly of CARBON. Such nanotubes are used as probes for high-resolution structural and chemical imaging of biomolecules with ATOMIC FORCE MICROSCOPY.

A dark powdery deposit of unburned fuel residues, composed mainly of amorphous CARBON and some HYDROCARBONS, that accumulates in chimneys, automobile mufflers and other surfaces exposed to smoke. It is the product of incomplete combustion of carbon-rich organic fuels in low oxygen conditions. It is sometimes called lampblack or carbon black and is used in INK, in rubber tires, and to prepare CARBON NANOTUBES.

NANOTUBES formed from cyclic peptides (PEPTIDES, CYCLIC). Alternating D and L linkages create planar rings that self assemble by stacking into nanotubes. They can form pores through CELL MEMBRANE causing damage to cells.

An atom or group of atoms that have a positive or negative electric charge due to a gain (negative charge) or loss (positive charge) of one or more electrons. Atoms with a positive charge are known as CATIONS; those with a negative charge are ANIONS.

Quick Search

DeepDyve research library

Searches Linking to this Article