25 articles in this issue
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Volume 24, Number 3S1 (2014)
Do Trung Kien,Pham Thi Tuyet Nhung,Pham Van Thanh
In this paper, the dependences of the velocities and the absorption coefficients of ultrasonic waves transmitted in 1018 low carbon steel on temperature ranging from 0°^{\circ}C to 50°^{\circ}C were investigated. It was shown that the velocities of the ul... see more
Luu Thi Lan Anh,Luong Huu Bac,Pham Phi Hung,Nguyen Duc Hieu,Mateus Manuel Neto,Vo Thach Son,Tran Thanh Thai
In this report, the ZnO nanostructure films have been deposited by ultrasonic spray pyrolysis technique (USP) on fluorine doped tinoxide~(FTO) substrate using zinc acetate and aqueous 2-propanol as reactants. The effects of solution spray rate on struc... see more
Huynh Tran My Hoa,Hoang Thi Thu,La Phan Phuong Ha,Le Ha Phuong,Tran Quang Trung,Nguyen Van Thuan,Nguyen Nang Dinh,Phan Minh Hanh
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Cao Xuan Huu,Nguyen Bao Linh,Nguyen Thi Hoang Yen,Dang Duc Long
In recent years, magnetic nanoparticles (MNPs) have been applied to numerous biological systems. The nanoparticles are particularly useful in separating biological molecules due to its low price, scalable ability and very little interference. Here, MNPs, ... see more
Le Thi Hong Lien,Vu Ngoc Tuoc,Nguyen Viet Minh,Tran Doan Huan
Kento Ueno,Motoyoshi Kobayashi,Yasuhisa Adachi,Takashi Kojima
Charging and stability of needle-like TiO2_{2} nanoparticles were studied. Measured isoelectric point (IEP) was pH~4 and lower than that of spherical ones pH~6. Heat treatment at 400\r{}\text{\r{}}C changed the IEP from 4 to 6. The shift is... see more
Tran Thi Hong,Phan Tien Dung,Vu Xuan Quang
In this work, the structural characteristic and photoluminescence properties of Eu3+^{3 + } doped B2_{2}O3_{3}-TeO2_{2} -ZnO-Na2_{2}O glasses were investigated. These glasses were prepared by a melting method in air, combined with thermal annealing at ... see more
Chu Anh Tuan,Nguyen Thi Thu Trang,Le Anh Tu,Duong Thi Giang,Pham Hong Duong,Pham Thanh Huy
Bright photoluminescent silicon nanoparticles were successfully fabricated from porous silicon target in air and n-hexane using 532 nm line of YAG:Nd pulsed laser. The whole procedure was carried out at room temperature, in atmosphere. The morphology an... see more
Tran Thi Thao,Do Ngoc Chung,Nguyen Nang Dinh,Vo Van Truong
Nguyen Khac Thuan,Hoang Nam Nhat
The structure and electrical properties of the thin gold leaves fabricated by Vietnam traditional laminating technology are introduced. The gold leaves are usually created with the average size of 3x3cm, and 200nm thickness, they can easily be broken w... see more
Le Dinh Trong
Ho Khac Hieu,Nguyen Manh Hai
In this work, the path-integral effective potential (PIEP) method has been applied to re-study the temperature dependence of extended X-ray absorption fine structure (EXAFS) cumulants of materials. Using the trial density matrix and effecti... see more
Nguyen Quang Bau,Bui Dinh Hoi,Tran Cong Phong
The Hall effect is studied theoretically in a doped semiconductor superlattice (DSSL) subjected to a crossed dc electric field and magnetic field in the presence of an intense electromagnetic wave (EMW). By using the quantum kinetic equation for electr... see more
Wirach Taweepreda,Supawadee Tuaybut,Sineenart Puangmanee,Tran Dang Khoa
Film formation of natural rubber latex (NRL) blended with various concentrations of chitosan was investigated. Atomic force microscopy (AFM) images clearly showed that the NRL film covered chitosan phase. Roughness of the films which was calcula... see more
Dang Hai Ninh,Tran Thi Thao,Nguyen Nang Dinh,Pham Duy Long
Using doctor-blade technique, followed by electrochemical deposition, nanocomposite WO3_{3}-TiO2_{2} films were prepared. Structure, morphology and composition ratio of the nanocomposite films were characterized by a comprehensive analyzing the SEM, E... see more
Hoang Thi Thu,Huynh Tran My Hoa,Pham Hoai Phuong,Nguyen Huynh Nhu,Tran Quang Trung,Lam Minh Long,Nguyen Nang Dinh
Herein we report a electrode in the hybrid structure of the silver nanowires (AgNWs) with reduced graphene oxide (rGO) deposited on glass or PET substrate. The assembly and contacting in procedures of this hybrid film have b... see more
Nguyen Phuong Hoai Nam
Nguyen Thi Minh Hong,Pham Duc Thang,Dang Dinh Long,Pham Thai Ha,Nguyen Ngoc Trung,Pham Hong Cong,Nguyen Dinh Duc
We have investigated the effects of temperature on the magnetic easy axis reorientation (EARs) in polycrystalline ferromagnetic (FM) nano-scale thin films, i.e. (001)-oriented cubic films such as Fe, Ni, CFO and (0001)-oriented hexagonal fi... see more
Pham The Tan,Pham Huyen Yen,Hoang Nam Nhat,Nguyen Quang Hoa
Le Viet Cuong,Pham Duc Thang,Nguyen The Hien
In this paper, we present a fabrication process to produce the micro-sized magnetic structures based on the hard magnetic powders. Under the magnetic field originated from a micro patterned hard magnetic film, these magnetic powders are mag... see more
Le Tuan Tu,Luu Van Thiem,Pham Duc Thang
The magnetic properties in Co-Ni-P nanowires arrays with diameter of 200 nm were investigated. All the samples were prepared by electrodeposition method with pH of 5.5 and at room temperature. During the deposition, a magnetic field in range of 0 - 750... see more
Luu Van Thiem,Le Tuan Tu,Pham Duc Thang
CoNiP nanowire arrays were fabricated by electrodeposition method into polycarbonate (PC) templates at different pH values. It is obvious that the crystal structure of the CoNiP nanowires depends on the pH values of electrolyte. The XRD results show th... see more
Nguyen Van Hong,Mai Thi Lan,Nguyen Thu Nhan
The polyamorphism and two-state model based on the coordination number distribution in liquid GeO2_{2} at 3200~K and in a wide pressure range are investigated by molecular dynamics simulation. Results show that the structure of liquid GeO2_{2} mainly c... see more
Nguyen Thi Minh Hong,Pham Duc Thang,Pham Thai Ha
The microstructure, crystallographic structure and magnetic properties of ferroelectric-ferromagnetic PZT/CoCr heterostructures have been investigated by using XRD, SEM and VSM.~Upon applying an electric field, the in-plane magnetization of the heterostru... see more