VNU Journal of Science: Mathematics - Physics

  2588-1124

 

 

 

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Theoretical Study of the Nernst Effect in Compositional Superlattices in the Presence of Strong Electromagnetic Wave
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Cao Thi Vi Ba, Nguyen Thu Huong, Tran Khuong Duy, Nguyen Thi Thanh Nhan
The Nernst effect has been theoretically studied in compositional superlattice in the presence of a strong electromagnetic wave. Using the quantum kinetic equation for electrons with two cases electrons-acoustic phonons scattering and electrons-optical phonons scattering, we obtained the analytic expression of the Nernst coefficient and kinetic tensors as a function of the magnetic field, temperat...... hiện toàn bộ
Radio-electric Effect in Semi-parabolic Plus Semi-inverse Squared QuantumWells
Tập 40 Số 3 - Trang - 2024
Cao Thi Vi Ba, Tang Thi Dien, Nguyen Thu Huong
Radioelectric field in semi-parabolicplus semi-inverse squared quantum wells has been studied in the presence of a linearly polarized electromagnetic wave. By using quantum kinetic equations for electrons in the case of electrons – optical phonons scattering, the analytical expression for the Radioelectricfield was obtained as a function of the frequency, the amplitude of the linearly polarized el...... hiện toàn bộ
Synthesis and Optical Properties of Cu2O and Au-Cu2O core-shell particles
- 2017
Doanh Sai Cong, Pham Nguyen Hai, Ngac An Bang
Cuprous oxide (Cu2O) and Au-Cu2O core-shell nanoparticles were successfully synthesized using the chemical reduction method. The morphology of the synthesized pure Cu2Oparticles can be controlled by varying the amount of reducing agent NH2OH.HCl. Due to their similar crystal structure and relatively small lattice mismatch Cu2O particles are nucleated and locally undergo an epitaxial growth on the ...... hiện toàn bộ
On the Cofiniteness of Certain Local Cohomology Modules for a Pair of Ideals
Tập 40 Số 4 - Trang - 2024
Nguyen Van Hoang
 Let  be non-negative integers and  be an -module such that  is finitely generated for all  and  for all , where  is a class of modules. We hence prove that (1) if  then  is -cofinite for all ; (2) if  and  is finitely generated for all , then  is -cofinite for all . These extend the results of Khazaei-Sazeedeh [10, Thm 2.10, Thm 2.11] fo...... hiện toàn bộ
Surface-enhanced raman scattering from a layer of gold nanoparticles
Tập 26 Số 4 - Trang - 2010
Nguyen The Binh, Nguyen Thanh Dinh, Nguyen Quang Dong, Vu Thi Khanh Thu
Abstract
On the S-Quasi Regular Algebras
Tập 19 Số 2 - Trang - 2003
Tran Trong Hue
Abstract
Location of Interface Bose-Einstein Condensate Mixtures in Finite Space Under Neumann Boundary Condition
Tập 40 Số 4 - Trang - 2024
Hoang Van Quyet
In this work we proposed a simple method to determine the coordinate of interface of two-component Bose-Einstein condensates (BECs) in double parabola approximation (DPA) under Neumann boundary conditions. Based on this idea, the static properties of BECs have been investigated totally in DPA.
A Comparison Study of Photocatalytic Performance of TiO2 Anatase Phase Prepared from Different Procedures
Tập 40 Số 3 - Trang - 2024
Trinh Thi Loan, Vu Hoang Huong
In this work, three TiO2 anatase phase samples, labeled as S1, S2, and S3, were synthesized using varying titanium precursors, solvents, and conditions to compare their photocatalytic performances. The structural and morphological properties of the synthesized samples were characterized through X-ray diffraction (XRD), Raman scattering, field emission scanning electron microscopy (FESEM), and tran...... hiện toàn bộ
Sản xuất Pin Mặt Trời Hữu Cơ Sử Dụng Hỗn Hợp Phthalocyanine Tan Trong Dung Môi và Fullerene Kết Hợp Với Dung Môi Thêm Xử Lý Dịch bởi AI
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Quang-Duy Dao
Chúng tôi chứng minh một pin mặt trời hữu cơ (OSC) kiểu giao diện heterojunction khối (BHJ) hiệu quả sử dụng một dẫn xuất phthalocyanine tan trong dung môi, 1,4,8,11,15,18,22,25-octahexylphthalocyanine (C6PcH2), và một dẫn xuất fullerene, 1-(3-methoxy-carbonyl)-propyl-1-phenyl-(6,6)C71, đồng thời nghiên cứu vai trò của dung môi thêm xử lý trong việc cải thiện các pin OSC BHJ. Bằng cách thêm dung m...... hiện toàn bộ
#pin mặt trời hữu cơ #giao diện heterojunction #phthalocyanine #fullerene #dung môi thêm xử lý #hiệu suất chuyển đổi năng lượng