Enhanced sensitivity of MoSe2 monolayer for gas adsorption Induced by electric field.

08:00 EDT 13th June 2019 | BioPortfolio

Summary of "Enhanced sensitivity of MoSe2 monolayer for gas adsorption Induced by electric field."

According to recent studies, gas sensors based on MoSe2 have better detection performance than graphene-based sensors, especially for N-based gas molecules, but the reason for that is not fully understood at the microscopic level. Here, we investigate the adsorption of CO, CO2, NH3, NO and NO2 gas molecules on MoSe2 monolayer by the density functional theory calculations. Our results reveal that indeed MoSe2 monolayer is more sensitive to adsorption of N-containing gas molecules than C-containing, which can be attributed to the distinct charge transfer between the gas molecules and MoSe2. The conductance was further calculated using the nonequilibrium Green's function (NEGF) formalism. The reduced conductance was found for NH3 and NO2 adsorbed MoSe2, consistent with the high sensitivity of MoSe2 for NH3 and NO2 molecules in the recent experiments. In addition, the adsorption sensitivity can significantly be improved by an external electric field, which implies the controllable gas detection by MoSe2. The magnetic moments of adsorbed NO and NO2 molecules can also be effectively modulated by the field-sensitive charge transfer. Our results not only give microscopic explanations to the recent experiments, but also suggest using MoSe2 as a promising material for controlled gas sensing.


Journal Details

This article was published in the following journal.

Name: Journal of physics. Condensed matter : an Institute of Physics journal
ISSN: 1361-648X


DeepDyve research library

PubMed Articles [24059 Associated PubMed Articles listed on BioPortfolio]

Electric field assisted activation of CO over P-doped graphene: A DFT study.

The aim of the present study is to investigate the possibility of using phosphorous-doped graphene (P-Gr) as an efficient and selective sorbent for capture and storage of CO. Density functional theory...

Coupled Biphase (1T-2H)-MoSe on Mold Spore Carbon for Advanced Hydrogen Evolution Reaction.

Performance breakthrough of MoSe -based hydrogen evolution reaction (HER) electrocatalysts largely relies on sophisticated phase modulation and judicious innovation on conductive matrix/support. In th...

Platinum-enhanced amorphous TiO-filled mesoporous TiO crystals for the photocatalytic mineralization of tetracycline hydrochloride.

The adsorption ability and photoactivity of a photocatalyst largely determine the mineralization efficiency of antibiotics. Herein, aiming to enhance the adsorption and mineralization of antibiotics, ...

Nonlinear electrokinetic motion of electrically induced Janus droplets in microchannels.

The nonlinear electrokinetic motion of electrically induced Janus droplets (EIJDs) in a microchannel is studied in this paper. The EIJDs were fabricated by operating the positively charged aluminum ox...

Electric Field Control of Spins in Molecular Magnets.

Coherent control of individual molecular spins in nanodevices is a pivotal prerequisite for fulfilling the potential promised by molecular spintronics. By applying electric field pulses during time-re...

Clinical Trials [7246 Associated Clinical Trials listed on BioPortfolio]

Bioelectric Field Imaging Near Human Skin Wounds

The investigators have developed a new non-invasive medical device called the Bioelectric Field Imager. They plan to use this device to measure the electric field near small lancet wounds ...

A Clinical Trial of Dermacorder for Detecting Malignant Skin Lesions

The Dermacorder measures the electric field in the skin. Malignant skin lesions disrupt the skin's normal electric field and this abnormal electric field can be detected by the Dermacorder...

BE Study of Bilayer Combination of Gemigliptin/Rosuvastatin 50/20mg in Comparison to Monolayer Combination.

To evaluate and compare PK/PD, safety and tolerability of monolayer combination of Gemigliptin/Rosuvastatin 50/20mg and bilayer combination of Gemigliprin/Rosuvastatin 50/20mg in healthy a...

MOSE to Improve the Diagnostic Accuracy During EUS-guided FNA Using a 19-gauge Needle for Solid Lesions

The technique of macroscopic on-site evaluation (MOSE) has recently been advocated for estimating the adequacy of a core specimen for histological diagnosis during EUS-FNA using a 19-gauge...

Contrast-enhanced Ultrasound Evaluation of Chemoembolization

The primary objective of this trial is to evaluate the sensitivity and specificity of 2D and 4D contrast enhanced ultrasound for monitoring transarterial chemoembolization (TACE) response ...

Medical and Biotech [MESH] Definitions

Devices for accelerating charged particles in a spiral path by a constant-frequency alternating electric field. This electric field is synchronized with the movement of the particles in a constant magnetic field.

Electrophoresis in which the direction of the electric field is changed periodically. This technique is similar to other electrophoretic methods normally used to separate double-stranded DNA molecules ranging in size up to tens of thousands of base-pairs. However, by alternating the electric field direction one is able to separate DNA molecules up to several million base-pairs in length.

A state in which there is an enhanced potential for sensitivity and an efficient responsiveness to external stimuli.

Injuries caused by electric currents. The concept excludes electric burns (BURNS, ELECTRIC), but includes accidental electrocution and electric shock.

The dissociation of molecules in the air into positive and negative ions under the influence of an electric field.

Quick Search


DeepDyve research library

Searches Linking to this Article