Bilayer MSe2 (M = Zr, Hf, Mo, W) performance as a hopeful thermoelectric materials

Mahmood Radhi Jobayr; Ebtisam M-T. Salman

doi:10.1088/1674-4926/44/3/032001

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Publication Date

Wed Mar 01 2023

Journal Name

Journal Of Semiconductors

Volume

44

Issue Number

3

DOI

10.1088/1674-4926/44/3/032001

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Bilayer MSe2 (M = Zr, Hf, Mo, W) performance as a hopeful thermoelectric materials

ZT

thermoelectric property

2D-bilayer

Boltzmann-transport equation

TE power factor

Mahmood Radhi Jobayr

Ebtisam M-T. Salman

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AbstractSignificant advancements in nanoscale material efficiency optimization have made it feasible to substantially adjust the thermoelectric transport characteristics of materials. Motivated by the prediction and enhanced understanding of the behavior of two-dimensional (2D) bilayers (BL) of zirconium diselenide (ZrSe2), hafnium diselenide (HfSe2), molybdenum diselenide (MoSe2), and tungsten diselenide (WSe2), we investigated the thermoelectric transport properties using information generated from experimental measurements to provide inputs to work with the functions of these materials and to determine the critical factor in the trade-off between thermoelectric materials. Based on the Boltzmann transport equation (BTE) and Barden-Shockley deformation potential (DP) theory, we carried out a series of investigative calculations related to the thermoelectric properties and characterization of these materials. The calculated dimensionless figure of merit (ZT) values of 2DBL-MSe2 (M = Zr, Hf, Mo, W) at room temperature were 3.007, 3.611, 1.287, and 1.353, respectively, with convenient electronic densities. In addition, the power factor is not critical in the trade-off between thermoelectric materials but it can indicate a good thermoelectric performance. Thus, the overall thermal conductivity and power factor must be considered to determine the preference of thermoelectric materials.

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Publication Date

Sun Jan 24 2016

Journal Name

Al-academy

Iraq Sophism Recitation "luIIaby as example": أنمار علي حسين

Anmar

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The research consists of four chapters, and the research aims to uncover the melodic and rhythmic aspects of the Iraqi Sufi chanting (Thalilah as a model) as one of the models of Sufi chanting in Iraq that is held at the tomb of Sheikh "Abdul Qadir Al-Kilani". As for the temporal limit of the research, it is from 2011 to 2012.
The researcher selected two samples for the research sample:
1. Separation of the Thalilah of the Prophet Al Adnani
2. Separate the chanting of prayers
According to the musical analysis, the researcher prepared the search tool, which consisted of eight paragraphs, for a special standard system in line with the research objectives. The validity and reliability of the instrument was verified by experts to

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Publication Date

Mon Mar 01 2010

Journal Name

Al-khwarizmi Engineering Journal

Synthetic Sacks as Reinforced Fibers in the Thermosetting Composites

Mukheled A.

Falak O.

Raghad O.

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This study was carried out to investigate the preparation of thermosetting polymeric blend consisting of three adhesive types, namely: epoxy, polyvinyl formal (PVF) and unsaturated polyester. Both of epoxy and PVF were used as a matrix-binder at fixed weight. Whilst unsaturated polyester was used at different weights and added to the matrix so as to produce prepared epoxy-PVF-unsaturated polyester blend. Several experiments were performed at different operating conditions, mixing speed and time at room temperature to identify the most favorable operating conditions. The optimum mixing speed and mixing time for the prepared blend were 500rpm and 5 minutes respectively.

Solid wastes-synthetic sack fib

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Publication Date

Fri Jan 01 2021

Journal Name

Materials Today: Proceedings

Pyrolysis of scrap tire by utilizing zeolite as catalyst

Ghassan Hassan Abdul

Najwa Sabir

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(9)

(4)

Publication Date

Wed Jan 01 2014

Journal Name

Journal Of The College Of Languages (jcl)

Tennessee Williams: Memories as symbols in The Glass Menagerie

liza hussain

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The Glass Manegerie is a metaphor, which is one of the greatest plays of great writer Williams. The play talks about the poor people in society and how try to escape this group of people from the real world to get rid of the hardness of this tuff reality and live in a fantasy world that is much like the glass where the world is very weak this world is acting by Laura, she is owner of these animals breakable glass where it's weak and unable to defend itself as well as the mother Amanda is a very selfish never think about her children but only herself.

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Publication Date

Sat Feb 01 2025

Journal Name

Iop Conference Series: Earth And Environmental Science

Chitosan as an Aflatoxin Inhibitor in Local Fish Feed

MUHAMMAD I.

Safa

suhad hamza

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AbstractThe current research attempts to find a feed additive that enhances fish growth and eliminate toxins generated from fungi and mold, which are found in improperly manufactured and stored feed, while ensuring the safety of these fish meat for the consumer. Therefore, the organic properties of chitosan powder were examined in order to determine its impact on maturation of young <italic>Cyprinus carpio</italic>. Chitosan was tested in three samples of feedings at three concentrations: CH1 7gm/1kg fish feed, CH2 10gm/1kg, and CH3 15gm/1kg carp fish feed. The results showed that the third parameter, 15gm CH3 chitosan/kg of feed, was superior to the other parameters, having a highl ... Show More

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Publication Date

Fri Jan 05 2024

Journal Name

Al-academy

Theatrical Thechnology & IT Applycation circus clown Sad as sample

Ammar

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Means the current research to study the organization formal and its role in demonstrating aesthetic values of the publications issued by the Telecommunications Company (Asia Cell) in Iraq, where is the organization the formal need for a mission to find the concepts and dimensions of the functional and expressive and aesthetic added to the impact of the actor in achieving the goals set for the publication.
The target is determined by the researcher to disclose the role of formal organization to show the aesthetic values of the publication to reach scientific results

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Publication Date

Thu Apr 01 2021

Journal Name

Iop Conference Series: Earth And Environmental Science

Disadvantages of using Nano-particles as fertilizers in Iraq

Mohammed Mahmood

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AbstractThe agriculture around the world faced many difficulties and the important was to reduce inputs of chemical fertilizers and pesticides and increase the total yield specially with the continuous grow of populations numbers at the world expected to reach more than 9 billion by 2050. In other hand there are other problems which make the challenges bigger such as wars, biotic and abiotic stress, and diseases. The scientists tried to find solutions by using Nano-fertilization which consider a modern way to quickly grow up the yield and decrease use the chemicals. The use of nanotechnology may be destructive on human and the environment due to fast accumulation in the tissues of alive bodie ... Show More

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(12)

(8)

Publication Date

Tue Jun 15 2021

Journal Name

Iraqi Journal Of Pharmaceutical Sciences ( P-issn 1683 - 3597 E-issn 2521 - 3512)

Formulation and Characterization of Felodipine as an Oral Nanoemulsions

Nanoemulsion

Felodipine

Lipid dosage forms.

Sumaya

Shaimaa

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Felodipine is a calcium-channel blocker with low aqueous solubility and bioavailability. Lipid dosage forms are attractive delivery systems for such hydrophobic drug molecules. Nanoemulsion (NE) is one of the popular methods that has been used to solve the dispersibility problems of many drugs. Felodipine was formulated as a NE utilizing oleic acid as an oil phase, tween 80 and tween 60 as surfactants and ethanol as a co-surfactant. Eight formulas were prepared, and different tests were performed to ensure the stability of the NEs, such as particle size, polydispersity index, zeta potential, dilution test, drug content, viscosity and in-vitro drug release. Result

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(20)

(7)

Publication Date

Tue Mar 20 2018

Journal Name

Day 3 Thu, March 22, 2018

Economics of Supramolecular Assemblies as Displacement Fluids in EOR

Cost effectiveness

Efficiency

Enhanced recovery

Floods

Offshore oil well production

Offshore technology

Oil well flooding

Polymers

Reservoirs (water)

Shear stress

Supramolecular chemistry

Viscosity

Cenk

Mohamad Y.

Anas K.

Dike

Omar

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AbstractIt is estimated that over the next few decades, EOR will be used for the more than 50% of oil production in the US and worldwide. From these, in reservoir with viscositites ranging between 10 – 150 mPa.s, polymer flooding is suggsted as the EOR method. Therefore, there is an upper limit to the recommended range of reservoir oil viscosities for polymer flooding. To address the issue of this limitation of polymer injectivity and pumping efficiency, we propose a novel method. The method involves the use of Supramolecular Systems, which are composed of long-chain aminoacids and maleic acids post complexation. Their unique feature of resersible viscosities allows the operator to overcome ... Show More

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(2)

(1)

Publication Date

Sat Nov 01 2014

Journal Name

Glob Dermatol

Podophyllin 25% as alternative effective topical therapy for keratoacanthoma

AA Noaimi

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KE Sharquie, AA Noaimi, Glob Dermatol, 2014 - Cited by 6

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