Nguyen N. Hieu
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View article: Free vibration of axially loaded functionally gared carbon nanotube-reinforced composite curved beams
Free vibration of axially loaded functionally gared carbon nanotube-reinforced composite curved beams Open
This study analyzes the free vibration of axially graded functionally graded carbon nanotube-reinforced composite (FG-CNTRC) curved beams. The theoretical framework employed is based on higher-order shear deformation theory. The governing …
View article: INFORMATION TECHNOLOGY, TAX COMPETITION, BENEFIT-COST OF TAX INCENTIVES, LOCAL GOVERNMENT AUTONOMY AND FIRM PERFORMANCE IN VIETNAM
INFORMATION TECHNOLOGY, TAX COMPETITION, BENEFIT-COST OF TAX INCENTIVES, LOCAL GOVERNMENT AUTONOMY AND FIRM PERFORMANCE IN VIETNAM Open
This study investigates the influence of institutional factors, including local fiscal autonomy, provincial tax competition, provincial competitiveness, ICT adoption, and digital transformation on the business performance of enterprises ac…
View article: Impact of Ginkgo biloba drug interactions on bleeding risk and coagulation profiles: A comprehensive analysis
Impact of Ginkgo biloba drug interactions on bleeding risk and coagulation profiles: A comprehensive analysis Open
This retrospective observational study was conducted to investigate the prevalence and clinical implications of drug interactions involving Ginkgo biloba extract on bleeding risk and coagulation profiles. Our analysis utilized data from pa…
View article: Impact of Institutional Factors and Tax Revenue on Firm Performance Across Provincial Localities in Vietnam
Impact of Institutional Factors and Tax Revenue on Firm Performance Across Provincial Localities in Vietnam Open
This research aims to examine the impact of the institutional factors and tax revenue on firm performance in 63 provinces and cities in Vietnam. The authors select data of the period 2015-2021 and run the regression model using GMM with th…
View article: Two-dimensional TaS<sub>2</sub> as a contact material for MXene Sc<sub>2</sub>CF<sub>2</sub> semiconductors: a first-principles study
Two-dimensional TaS<sub>2</sub> as a contact material for MXene Sc<sub>2</sub>CF<sub>2</sub> semiconductors: a first-principles study Open
Metal–semiconductor heterojunctions are fundamental to modern electronics, serving as the key interface for charge transport and enabling diverse functionalities in electronic and optoelectronic devices.
View article: Two-dimensional Janus α-Au<sub>2</sub>XY (X, Y = S/Se/Te) semiconductors with favourable band gaps and high carrier mobilities predicted by first-principles investigations
Two-dimensional Janus α-Au<sub>2</sub>XY (X, Y = S/Se/Te) semiconductors with favourable band gaps and high carrier mobilities predicted by first-principles investigations Open
In this work, two-dimensional Janus α-Au 2 XY (X, Y = S/Se/Te) monolayers are designed and their structural stabilities and fundamental properties are investigated using first-principle calculations.
View article: First principles exploring the tunable electronic and optical features of silicane/γ-GeSe heterostructures for advanced electronic devices
First principles exploring the tunable electronic and optical features of silicane/γ-GeSe heterostructures for advanced electronic devices Open
In this work, we explore the electronic and optical properties of the SiH/γ-GeSe heterostructure using first-principles calculations, emphasizing its remarkable tunability under applied electric fields.
View article: First principles unveiling the metallic TaS<sub>2</sub>/GeC heterostructure as an anode material in sodium-ion batteries
First principles unveiling the metallic TaS<sub>2</sub>/GeC heterostructure as an anode material in sodium-ion batteries Open
In this work, we designed the metal/semiconductor TaS 2 /GeC heterostructure and explored its structural, electronic properties and adsorption performance using first-principles prediction.
View article: Janus TiSi <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>Z</mml:mi> </mml:mrow> </mml:math> <sub>3</sub>H ( <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>Z</mml:mi> <mml:mo>=</mml:mo> </mml:mrow> </mml:math> N, P, As) monolayers with large out-of-plane piezoelectricity and high electron mobility: first-principles study
Janus TiSi <sub>3</sub>H ( N, P, As) monolayers with large out-of-plane piezoelectricity and high electron mobility: first-principles study Open
In this paper, we propose a series of novel two-dimensional Janus structures TiSi Z 3 H ( N, P, As) and investigate their electronic, mechanical, piezoelectric, and transport properties using the density functional theory. The examined…
View article: Two-photon absorption in quantum dots with Hellmann potential
Two-photon absorption in quantum dots with Hellmann potential Open
We study the nonlinear optical absorption properties of a spherical quantum dot (SQD) with Hellmann potential, focusing on the two-photon absorption (TPA) process, using GaAs/AlGaAs material as an example. The radial Schrödinger equation i…
View article: Induced out-of-plane piezoelectricity and giant Rashba spin splitting in Janus WSi<i>Z</i>3H (<i>Z</i> = N, P, As) monolayers toward next-generation electronic devices
Induced out-of-plane piezoelectricity and giant Rashba spin splitting in Janus WSi<i>Z</i>3H (<i>Z</i> = N, P, As) monolayers toward next-generation electronic devices Open
Two-dimensional (2D) piezoelectric nanomaterials have widely been studied recently due to their promise for various applications in technology. Investigation of vertical piezoelectricity will contribute to a deeper understanding of the int…
View article: Two-dimensional Janus Si<sub>2</sub>OX (X = S, Se, Te) monolayers as auxetic semiconductors: theoretical prediction
Two-dimensional Janus Si<sub>2</sub>OX (X = S, Se, Te) monolayers as auxetic semiconductors: theoretical prediction Open
The auxetic materials have exotic mechanical properties compared to conventional materials, such as higher indentation resistance, more superior sound absorption performance.
View article: Theoretical prediction of electronic properties and contact barriers in a metal/semiconductor NbS<sub>2</sub>/Janus MoSSe van der Waals heterostructure
Theoretical prediction of electronic properties and contact barriers in a metal/semiconductor NbS<sub>2</sub>/Janus MoSSe van der Waals heterostructure Open
The emergence of van der Waals (vdW) heterostructures, which consist of vertically stacked two-dimensional (2D) materials held together by weak vdW interactions, has introduced an innovative avenue for tailoring nanoelectronic devices.
View article: Piezoelectric GaGeX<sub>2</sub> (X = N, P, and As) semiconductors with Raman activity and high carrier mobility for multifunctional applications: a first-principles simulation
Piezoelectric GaGeX<sub>2</sub> (X = N, P, and As) semiconductors with Raman activity and high carrier mobility for multifunctional applications: a first-principles simulation Open
In the present work, we propose GaGeX 2 (X = N, P, As) monolayers and explore their structural, vibrational, piezoelectric, electronic, and transport characteristics for multifunctional applications based on first-principles simulations.
View article: First-principles prediction of the electronic properties and contact features of graphene/γ-GeSe van der Waals heterostructure: effects of electric fields and strains
First-principles prediction of the electronic properties and contact features of graphene/γ-GeSe van der Waals heterostructure: effects of electric fields and strains Open
In this work, we investigate systematically the electronic properties and tunable contact behavior of the graphene/γ-GeSe heterostructure under applied electric fields and out-of-plane strains using first-principles calculations.
View article: First-principles investigations of the controllable electronic properties and contact types of type II MoTe<sub>2</sub>/MoS<sub>2</sub> van der Waals heterostructures
First-principles investigations of the controllable electronic properties and contact types of type II MoTe<sub>2</sub>/MoS<sub>2</sub> van der Waals heterostructures Open
Two-dimensional (2D) van der Waals (vdW) heterostructures are considered as promising candidates for realizing multifunctional applications, including photodetectors, field effect transistors and solar cells.
View article: A first-principles prediction of novel Janus ZrGeZ<sub>3</sub>H (Z = N, P, and As) monolayers: Raman active modes, piezoelectric responses, electronic properties, and carrier mobility
A first-principles prediction of novel Janus ZrGeZ<sub>3</sub>H (Z = N, P, and As) monolayers: Raman active modes, piezoelectric responses, electronic properties, and carrier mobility Open
In this article, an attempt is made to explore new materials for applications in piezoelectric and electronic devices.
View article: Monolayers Sn<sub>2</sub>Te<sub>2</sub>X<sub>4</sub> (X = P, As) as promising materials for photocatalytic water splitting and flexible devices: a DFT study
Monolayers Sn<sub>2</sub>Te<sub>2</sub>X<sub>4</sub> (X = P, As) as promising materials for photocatalytic water splitting and flexible devices: a DFT study Open
Photocatalysts Sn 2 Te 2 X 4 (X = P, As) exhibit a high light absorption rate and possess appropriate electronic structures for the function of water splitting.
View article: Achieving ultra-low contact barriers in MX<sub>2</sub>/SiH (M = Nb, Ta; X = S, Se) metal–semiconductor heterostructures: first-principles prediction
Achieving ultra-low contact barriers in MX<sub>2</sub>/SiH (M = Nb, Ta; X = S, Se) metal–semiconductor heterostructures: first-principles prediction Open
Minimizing the contact barriers at the interface, forming between two different two-dimensional metals and semiconductors, is essential for designing high-performance optoelectronic devices.
View article: Large piezoelectric responses and ultra-high carrier mobility in Janus HfGeZ<sub>3</sub>H (Z = N, P, As) monolayers: a first-principles study
Large piezoelectric responses and ultra-high carrier mobility in Janus HfGeZ<sub>3</sub>H (Z = N, P, As) monolayers: a first-principles study Open
Breaking structural symmetry in two-dimensional layered Janus materials can result in enhanced new phenomena and create additional degrees of piezoelectric responses.
View article: Antioxidant and Hepatoprotective Activities of Paris polyphylla Sm. Rhizome Extract in Cyclophosphamide-Induced Hepatic Damaged Mice
Antioxidant and Hepatoprotective Activities of Paris polyphylla Sm. Rhizome Extract in Cyclophosphamide-Induced Hepatic Damaged Mice Open
Paris polyphylla Smith (Melanthiaceae) is a medicinal plant for treating inflammatory, cancer, and liver-related diseases. Information on in vivo hepatoprotective effects of P. polyphylla rhizome extract has not been reported in the litera…
View article: Quantum magneto-transport properties of monolayers MoSi<sub>2</sub>N<sub>4</sub>, WSi<sub>2</sub>N<sub>4</sub>, and MoSi<sub>2</sub>As<sub>4</sub>
Quantum magneto-transport properties of monolayers MoSi<sub>2</sub>N<sub>4</sub>, WSi<sub>2</sub>N<sub>4</sub>, and MoSi<sub>2</sub>As<sub>4</sub> Open
We study the transport properties of monolayers MoSi 2 N 4 , WSi 2 N 4 , and MoSi 2 As 4 in a perpendicular magnetic field. The Landau level (LL) band structures including spin and exchange field effects are derived and discussed using a l…
View article: Effect of Electron-impurity Interaction on the Optical Absorption in A Quasi-one-dimensional Electron System
Effect of Electron-impurity Interaction on the Optical Absorption in A Quasi-one-dimensional Electron System Open
In this work, we investigated the optical absorption in a quasi-one-dimensional system subjected to an external electromagnetic wave. The optical absorption coefficient was calculated by using the perturbation theory taking account of the …
View article: Structural, electronic, and transport properties of Janus <i>X</i>MoSiP<sub>2</sub> ( <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>X</mml:mi> <mml:mo>=</mml:mo> </mml:math> S, Se, Te) monolayers: a first-principles study
Structural, electronic, and transport properties of Janus <i>X</i>MoSiP<sub>2</sub> ( S, Se, Te) monolayers: a first-principles study Open
Based on density functional theory calculation, herein we propose X MoSiP 2 ( S, Se, Te) monolayers for new two-dimensional (2D) Janus materials. Their crystal structures with dynamical, mechanical, and thermal stabilities, electronic a…
View article: Otosyphilis In An HIV-Infected Patient: The First Case in Vietnam
Otosyphilis In An HIV-Infected Patient: The First Case in Vietnam Open
Syphilis has been re-emerging around the world, especially in MSM and people living with HIV. Because of the high number of infections, complications of the disease that were previously rare, now appear again. Otosyphilis is one of them. W…
View article: Mycoplasma Genitalium and Chlamydia Trachomatis Prevalence, Co-Infection and Relevant Factors in An Epidemiology Study (2016 - 2019) In Ho Chi Minh, Vietnam
Mycoplasma Genitalium and Chlamydia Trachomatis Prevalence, Co-Infection and Relevant Factors in An Epidemiology Study (2016 - 2019) In Ho Chi Minh, Vietnam Open
Chlamydia trachomatis and Mycoplasma genitalium are two common types of sexually transmitted infections. However, currently in Vietnam, there is no report on the rate of patients infected by the two types of bacteria. In this study, there …
View article: First-principles examination of two-dimensional Janus quintuple-layer atomic structures XCrSiN<sub>2</sub> (X = S, Se, and Te)
First-principles examination of two-dimensional Janus quintuple-layer atomic structures XCrSiN<sub>2</sub> (X = S, Se, and Te) Open
In this work, we propose novel two-dimensional Janus XCrSiN 2 (X = S, Se, and Te) single-layers and comprehensively investigate their crystal structure, electronic properties, and carrier mobility by using a first-principles method.
View article: Electronic and optical properties of thiogermanate AgGaGeS<sub>4</sub>: theory and experiment
Electronic and optical properties of thiogermanate AgGaGeS<sub>4</sub>: theory and experiment Open
The electronic and optical properties of a AgGaGeS 4 crystal were studied by first-principles calculations, and experimental X-ray photoelectron and emission spectra were measured to verify the theoretical data.