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  Subjects -> PHYSICS (Total: 745 journals)
    - ELECTRICITY AND MAGNETISM (7 journals)
    - MECHANICS (20 journals)
    - NUCLEAR PHYSICS (44 journals)
    - OPTICS (86 journals)
    - PHYSICS (542 journals)
    - SOUND (17 journals)
    - THERMODYNAMICS (29 journals)

PHYSICS (542 journals)                  1 2 3 4 5 6 | Last

Acta Acustica united with Acustica     Full-text available via subscription   (Followers: 7)
Acta Mechanica     Hybrid Journal   (Followers: 15)
Advanced Composite Materials     Hybrid Journal   (Followers: 14)
Advanced Functional Materials     Hybrid Journal   (Followers: 34)
Advanced Materials     Hybrid Journal   (Followers: 342)
Advances in Condensed Matter Physics     Open Access   (Followers: 6)
Advances in Exploration Geophysics     Full-text available via subscription   (Followers: 3)
Advances in Geophysics     Full-text available via subscription   (Followers: 4)
Advances in High Energy Physics     Open Access   (Followers: 12)
Advances in Imaging and Electron Physics     Full-text available via subscription   (Followers: 1)
Advances in Materials Physics and Chemistry     Open Access   (Followers: 13)
Advances in Natural Sciences: Nanoscience and Nanotechnology     Open Access   (Followers: 14)
Advances in OptoElectronics     Open Access   (Followers: 3)
Advances In Physics     Hybrid Journal   (Followers: 7)
Advances in Physics Theories and Applications     Open Access   (Followers: 4)
Advances in Remote Sensing     Open Access   (Followers: 8)
Advances in Synchrotron Radiation     Hybrid Journal   (Followers: 1)
AIP Advances     Open Access   (Followers: 4)
AIP Conference Proceedings     Full-text available via subscription   (Followers: 1)
American Journal of Applied Sciences     Open Access   (Followers: 28)
American Journal of Condensed Matter Physics     Open Access   (Followers: 2)
American Journal of Signal Processing     Open Access   (Followers: 8)
Analysis and Mathematical Physics     Hybrid Journal   (Followers: 1)
Annalen der Physik     Hybrid Journal   (Followers: 2)
Annales Geophysicae (ANGEO)     Open Access   (Followers: 3)
Annales Henri PoincarĂ©     Hybrid Journal   (Followers: 2)
Annales UMCS, Physica     Open Access  
Annals of Nuclear Medicine     Hybrid Journal   (Followers: 3)
Annals of Physics     Hybrid Journal   (Followers: 2)
Annals of West University of Timisoara - Physics     Open Access  
Annual Reports on NMR Spectroscopy     Full-text available via subscription   (Followers: 1)
Annual Review of Analytical Chemistry     Full-text available via subscription   (Followers: 9)
Annual Review of Condensed Matter Physics     Full-text available via subscription   (Followers: 1)
Annual Review of Materials Research     Full-text available via subscription   (Followers: 4)
APL Materials     Open Access   (Followers: 4)
Applied Composite Materials     Hybrid Journal   (Followers: 9)
Applied Physics A     Hybrid Journal   (Followers: 9)
Applied Physics Frontier     Open Access   (Followers: 1)
Applied Physics Letters     Hybrid Journal   (Followers: 25)
Applied Physics Research     Open Access   (Followers: 6)
Applied Physics Reviews     Hybrid Journal   (Followers: 7)
Applied Radiation and Isotopes     Hybrid Journal   (Followers: 5)
Applied Remote Sensing Journal     Open Access   (Followers: 9)
Applied Spectroscopy     Full-text available via subscription   (Followers: 12)
Applied Spectroscopy Reviews     Hybrid Journal   (Followers: 2)
Archive for Rational Mechanics and Analysis     Hybrid Journal   (Followers: 3)
Astronomy & Geophysics     Hybrid Journal   (Followers: 1)
Astrophysical Journal Letters     Full-text available via subscription   (Followers: 3)
Astrophysical Journal Supplement Series     Full-text available via subscription   (Followers: 3)
Atoms     Open Access  
Attention, Perception & Psychophysics     Full-text available via subscription   (Followers: 6)
Autonomous Mental Development, IEEE Transactions on     Hybrid Journal   (Followers: 5)
Axioms     Open Access  
Bangladesh Journal of Medical Physics     Open Access  
Bauphysik     Hybrid Journal   (Followers: 1)
Biomaterials     Hybrid Journal   (Followers: 30)
Biomedical Engineering, IEEE Reviews in     Full-text available via subscription   (Followers: 15)
Biomedical Engineering, IEEE Transactions on     Hybrid Journal   (Followers: 12)
Biomedical Imaging and Intervention Journal     Open Access   (Followers: 5)
Biophysical Reviews     Hybrid Journal  
Biophysical Reviews and Letters     Hybrid Journal   (Followers: 3)
BMC Biophysics     Open Access   (Followers: 7)
BMC Nuclear Medicine     Open Access   (Followers: 5)
Brazilian Journal of Physics     Hybrid Journal  
Broadcasting, IEEE Transactions on     Hybrid Journal   (Followers: 5)
Bulletin of Materials Science     Open Access   (Followers: 39)
Bulletin of the Atomic Scientists     Full-text available via subscription   (Followers: 4)
Bulletin of the Lebedev Physics Institute     Hybrid Journal   (Followers: 1)
Bulletin of the Russian Academy of Sciences: Physics     Hybrid Journal  
Caderno Brasileiro de Ensino de FĂ­sica     Open Access  
Canadian Journal of Physics     Full-text available via subscription   (Followers: 1)
Cells     Open Access   (Followers: 1)
Central European Journal of Physics     Hybrid Journal   (Followers: 1)
CERN courier. International journal of high energy physics     Free  
Chinese Journal of Astronomy and Astrophysics     Full-text available via subscription   (Followers: 1)
Chinese Journal of Chemical Physics     Hybrid Journal   (Followers: 1)
Chinese Physics B     Full-text available via subscription  
Chinese Physics C     Full-text available via subscription  
Chinese Physics Letters     Full-text available via subscription  
Cohesion and Structure     Full-text available via subscription   (Followers: 2)
Colloid Journal     Hybrid Journal   (Followers: 2)
Communications in Mathematical Physics     Hybrid Journal   (Followers: 2)
Communications in Numerical Methods in Engineering     Hybrid Journal   (Followers: 3)
Communications in Theoretical Physics     Full-text available via subscription   (Followers: 1)
Composites Part A : Applied Science and Manufacturing     Hybrid Journal   (Followers: 49)
Composites Part B : Engineering     Hybrid Journal   (Followers: 65)
Computational Materials Science     Hybrid Journal   (Followers: 18)
Computational Mathematics and Mathematical Physics     Hybrid Journal   (Followers: 1)
Computational Particle Mechanics     Hybrid Journal  
Computational Science and Discovery     Full-text available via subscription  
Computer Physics Communications     Hybrid Journal  
Contemporary Concepts of Condensed Matter Science     Full-text available via subscription  
Contemporary Physics     Hybrid Journal   (Followers: 10)
Continuum Mechanics and Thermodynamics     Hybrid Journal   (Followers: 3)
Contributions to Plasma Physics     Hybrid Journal   (Followers: 2)
COSPAR Colloquia Series     Full-text available via subscription   (Followers: 1)
Cryogenics     Hybrid Journal   (Followers: 14)
Current Applied Physics     Full-text available via subscription   (Followers: 4)
Diamond and Related Materials     Hybrid Journal   (Followers: 12)
Differential Equations and Nonlinear Mechanics     Open Access   (Followers: 4)

        1 2 3 4 5 6 | Last

Journal Cover Advances in Natural Sciences: Nanoscience and Nanotechnology
   Journal TOC RSS feeds Export to Zotero [16 followers]  Follow    
  This is an Open Access Journal Open Access journal
     ISSN (Print) 2043-6254 - ISSN (Online) 2043-6262
     Published by Institute of Physics (IOP) Homepage  [70 journals]
  • pH sensitivity of emeraldine salt polyaniline and poly(vinyl butyral)
           blend

    • Authors: Hoa Duyen Nguyen; Thi Ha Nguyen, Ngoc Vu Hoang, Nguyen Ngan Le, Thi Ngoc Nhien Nguyen, Duc Chanh Tin Doan Mau Chien Dang
      First page: 045001
      Abstract: pH sensitivity of emeraldine salt polyaniline (ES-PANI) and poly(vinyl butyral) (PVB) blend film was investigated. This blend film can be used as a pH sensing element in new-type pH sensors to replace traditional instruments based on fragile glass electrodes for pH measurement of water in aquaculture farming. Structural and optical characteristic of PANI were studied by Fourier transform infrared spectroscopy (FTIR) and ultraviolet visible spectroscopy (UV–vis). Electrical characterization of ES-PANI:PVB blend films versus pH was performed with chemiresistors fabricated by micro-lithography. A ES-PANI:PVB layer was drop-coated on comb-shaped platinum electrodes patterned on SiO 2 /Si substrates. Scanning electron microscope (SEM) and optical microscope were used to investigate morphology of the fabricated platinum electrodes and the coated polymer blend films. I–V measurements of the polymer-coated chemiresistors were performed at very low relative humidity after ...
      Citation: Advances in Natural Sciences: Nanoscience and Nanotechnology
      PubDate: 2014-10-14T00:00:00Z
      Issue No: Vol. 5, No. 4 (2014)
       
  • Electron beam/ γ -ray irradiation synthesis of gold nanoparticles and
           investigation of antioxidant activity

    • Authors: Ngoc Duy Nguyen; Van Phu Dang, Anh Quoc Le Quoc Hien Nguyen
      First page: 045002
      Abstract: Colloidal solutions of 1 mM gold nanoparticles (AuNPs) were synthesized by γ -ray Co-60 and electron beam irradiation using 1% water soluble chitosan (WSC) with different molecular weight (Mw) as stabilizer. The AuNPs size measured from TEM images was of 7.1 and 15.1 nm for electron beam and γ -ray Co-60, respectively. The AuNPs sizes of 9.8, 15.1 and 22.4 nm stabilized by different WSC Mw of 155 × 10 3 , 78 × 10 3 and 29 × 10 3 g mol −1 , respectively, were also synthesized by γ -ray Co-60 irradiation. Antioxidant activity of AuNPs with different size from 7.1 to 20.0 nm was investigated using free radical 2,2′-azino-bis (3-ethylbenzothiazoline-6-sulphonic acid) (ABTS •+ ). Results indicated that the smaller size of AuNPs exhibited higher antioxidant activity. In particular, the antioxidant efficiency was of nearly 100, 75, 65, 52 and 30% for 7.1, 9.8, 15.1, 20.0 nm AuNPs and WSC 0.1%, respectively, at the same rea...
      Citation: Advances in Natural Sciences: Nanoscience and Nanotechnology
      PubDate: 2014-10-14T00:00:00Z
      Issue No: Vol. 5, No. 4 (2014)
       
  • Nano porous silicon microcavity sensor for determination organic solvents
           and pesticide in water

    • Authors: Van Hoi Pham; Thuy Van Nguyen, The Anh Nguyen, Van Dai Pham Huy Bui
      First page: 045003
      Abstract: In this paper we present a sensing method using nano-porous silicon microcavity sensor, which was developed in order to obtain simultaneous determination of two volatile substances with different solvent concentrations as well as very low pesticide concentration in water. The temperature of the solution and the velocity of the air stream flowing through the solution have been used to control the response of the sensor for different solvent solutions. We study the dependence of the cavity-resonant wavelength shift on solvent concentration, velocity of the airflow and solution temperature. The wavelength shift depends linearly on concentration and increases with solution temperature and velocity of the airflow. The dependence of the wavelength shift on the solution temperature in the measurement contains properties of the temperature dependence of the solvent vapor pressure, which characterizes each solvent. As a result, the dependence of the wavelength shift on the solution temper...
      Citation: Advances in Natural Sciences: Nanoscience and Nanotechnology
      PubDate: 2014-10-14T00:00:00Z
      Issue No: Vol. 5, No. 4 (2014)
       
  • Quartz crystal microbalance (QCM) as biosensor for the detecting of
           Escherichia coli O157:H7

    • Authors: Vo Ke Thanh Ngo; Dang Giang Nguyen, Hoang Phuong Uyen Nguyen, Van Man Tran, Thi Khoa My Nguyen, Trong Phat Huynh, Quang Vinh Lam, Thanh Dat Huynh Thi Ngoc Lien Truong
      First page: 045004
      Abstract: Although Escherichia coli ( E. coli ) is a commensalism organism in the intestine of humans and warm-blooded animals, it can be toxic at higher density and causes diseases, especially the highly toxic E. coli O157:H7. In this paper a quartz crystal microbalance (QCM) biosensor was developed for the detection of E. coli O157:H7 bacteria. The anti- E. coli O157:H7 antibodies were immobilized on a self-assembly monolayer (SAM) modified 5 MHz AT-cut quartz crystal resonator. The SAMs were activated with 16-mercaptopropanoic acid, in the presence of 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide (EDC) and ester N-hydroxysuccinimide (NHS). The result of changing frequency due to the adsorption of E. coli O157:H7 was measured by the QCM biosensor system designed and fabricated by ICDREC-VNUHCM. This system gave good results in the range of 10 2 –10 7 CFU mL −1 E. coli O157:H7. The time of bacteria E. coli ...
      Citation: Advances in Natural Sciences: Nanoscience and Nanotechnology
      PubDate: 2014-10-14T00:00:00Z
      Issue No: Vol. 5, No. 4 (2014)
       
  • A systematic study on the effect of acidic, basic and neutral additives on
           dispersion of multiwalled carbon nanotubes using a dimethylformamide
           solution

    • Authors: Sasmita Nayak; Sarama Bhattacharjee Bimal P Singh
      First page: 045005
      Abstract: Presence of acidic, basic and neutral additives on dispersion of multiwalled carbon nanotubes (MWCNTs) in dimethylforamide (DMF) solution has been investigated. The surface charge measurement showed that MWCNTs in the presence of acidic additives in DMF exhibit a higher surface charge (−85 C g −1 ) than that with the basic additives (−22 C g −1 ). The stability of the MWCNTs dispersion was visually monitored and it was found that in the presence of acidic and no additives it would be stable and dispersed for more than five days, whereas MWCNTs suspension immediately settle down in the presence of basic and neutral additives. The degree of defects on MWCNTs was determined by analysis of detailed Raman spectra of as-received MWNCTs and MWNCTs dispersed in DMF with different additives. By exploring the correlation between the I D / I G (Raman analysis) ratio and the degree of defects, it was found that the carbon–carbon double bond (...
      Citation: Advances in Natural Sciences: Nanoscience and Nanotechnology
      PubDate: 2014-10-14T00:00:00Z
      Issue No: Vol. 5, No. 4 (2014)
       
  • Green synthesis, characterization of Au–Ag core–shell
           nanoparticles using gripe water and their applications in nonlinear
           optics and surface enhanced Raman studies

    • Authors: E Kirubha; P K Palanisamy
      First page: 045006
      Abstract: In recent years there has been excessive progress in the ‘green’ chemistry approach for the synthesis of gold and silver nanoparticles. Bimetallic nanoparticles have gained special significance due to their unique tunable optical properties. Herein we report a facile one-pot, eco-friendly synthesis of Au–Ag bimetallic core–shell nanoparticles using gripe water as reducing as well as stabilizing agent. The as-synthesized Au–Ag nanoparticles are characterized using UV–Vis spectroscopy to determine the surface plasmon resonance, and using transmission electron microscopy to study the morphology and the particle size. The optical nonlinearity of the bimetallic nanoparticles investigated by z-scan technique using femtosecond Ti:sapphire is in the order of 10 9 . The nonlinear optical parameters such as the nonlinear refractive index n 2 , nonlinear absorption coefficient β and the third order nonlinear susceptibility χ 3 are measured fo...
      Citation: Advances in Natural Sciences: Nanoscience and Nanotechnology
      PubDate: 2014-10-17T00:00:00Z
      Issue No: Vol. 5, No. 4 (2014)
       
  • Synthesis and magnetic heating characteristics of thermoresponsive
           poly (N-isopropylacrylamide-co-acrylic acid)/nano Fe 3 O 4
           nanparticles

    • Authors: Thi Thu Trang Mai; Thi Hong Phong Le, Hong Nam Pham, Hung Manh Do Xuan Phuc Nguyen
      First page: 045007
      Abstract: In this work the synthesis of thermo-sensitive polymer coated magnetic nanoparticles and their inductive heating have been studied. Poly (N-isopropylacrylamide-co-acrylic acid) (NA) polymers were first synthesized by emulsion polymerization of poly(N-isopropylacrylamide) (NIP) in water and followed by encapsulating magnetic nanoparticles (MNPs). As increasing the concentration of acrylic acid (AA), the lower critical solution temperature (LCST) increased, so that with 150% of AA (molar ratio) the LCST reached 42 °C, which is close to the temperature of hyperthermia treatment. Magnetization and ac susceptibility measurements were conducted to depict some characteristics of the NIP-MNPs and NA-MNPs that are related with the loss power. Attempts to analyze the rate of magnetic inductive heating were performed to show the Brownian relaxation origin of additional heat source created by the magnetite nanoparticles capped with thermosensitive polymers. Our results suggest that these the...
      Citation: Advances in Natural Sciences: Nanoscience and Nanotechnology
      PubDate: 2014-10-17T00:00:00Z
      Issue No: Vol. 5, No. 4 (2014)
       
  • Incorporation of Fe 3 O 4 /CNTs nanocomposite in an epoxy coating for
           corrosion protection of carbon steel

    • Authors: Gia Vu Pham; Anh Truc Trinh, Thi Xuan Hang To, Thuy Duong Nguyen, Thu Trang Nguyen Xuan Hoan Nguyen
      First page: 035016
      Abstract: In this study Fe 3 O 4 /CNTs composite with magnetic property was prepared by attaching magnetic nanoparticles (Fe 3 O 4 ) to carbon nanotubes (CNTs) by hydrothermal method. The obtained Fe 3 O 4 /CNTs composite was characterized by Fourier transform infrared (FTIR) spectroscopy, powder x-ray diffraction and transmission electron microscopy. The Fe 3 O 4 /CNTs composite was then incorporated into an epoxy coating at concentration of 3 wt%. Corrosion protection of epoxy coating containing Fe 3 O 4 /CNTs composite was evaluated by electrochemical impedance spectroscopy and adhesion measurement. The impedance measurements show that Fe 3 O 4 /CNTs composite enhanced the corrosion protection of epoxy coating. The corrosion resistance of the carbon steel coated by epoxy coating containing Fe 3 O 4 /CNTs composite was significantly higher than that of carbon stee...
      Citation: Advances in Natural Sciences: Nanoscience and Nanotechnology
      PubDate: 2014-09-22T00:00:00Z
      Issue No: Vol. 5, No. 3 (2014)
       
  • Magnetic properties of Cr doped Fe 3 O 4 porous nanoparticles prepared
           through a co-precipitation method using surfactant

    • Authors: Hoang Duy Nguyen; Trung Dzung Nguyen, Dai Hai Nguyen Phuong Tung Nguyen
      First page: 035017
      Abstract: Magnetic Cr 3+ x Fe 3+2 − x Fe 2+ O 4(0 ≦̸ x ≦̸ 0.1) porous nanoparticles were prepared by the aqueous co-precipitation method. The resulting magnetic nanoparticles were characterized by using an x-ray diffraction (XRD), field enhanced scanning electron microscope (FESEM), transmission electron microscope (TEM), and vibrating sampling magnetometer (VSM). The nitrogen gas adsorption/desorption isotherm showed a microporous structure of the obtained magnetic materials. A rod and round shape of Fe 3 O 4 was observed as using polyvinylpyrrolidone (PVP) and cetyltrimethylammonium bromide (CTAB) surfactant, respectively. The Fe 3 O 4 nanoparticles exhibited superparamagnetic properties with easy separation and re-dispersion in solution by using an external magnet. More remarkably, the saturation magnetization ( M s ) was enhanced up to 1.2 times for dopin...
      Citation: Advances in Natural Sciences: Nanoscience and Nanotechnology
      PubDate: 2014-09-22T00:00:00Z
      Issue No: Vol. 5, No. 3 (2014)
       
  • Carboxymethylguargum-silver nanocomposite: green synthesis,
           characterization and an optical sensor for ammonia detection

    • Authors: Anek Pal Gupta; Devendra Kumar Verma
      First page: 035018
      Abstract: This work describes the preparation of new carboxymethyl guar gum-silver nanocomposite (CMGG/Ag NC) by green synthesis method. For this carboxymethyl guar gum was used as a reducing agent as well as stabilizer. The silver nanoparticles obtained were characterized by field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), UV–vis spectroscopy, Fourier transform infrared (FTIR) and energy dispersive x-ray analysis (EDX). The average size of the silver nanoparticles was found of ∼6 nm. Thus, the obtained CMGG/AgNPs NC was examined for optical sensing property for detection of ammonia in aqueous medium. The response time and the detection limit of ammonia in aqueous solution were detected at room temperature. It was concluded that in the future, at this room temperature optical ammonia sensor may be used for medical diagnosis and clinically for detecting low ammonia level (up to 1 ppm) in biological samples for various biomedical applications.
      Citation: Advances in Natural Sciences: Nanoscience and Nanotechnology
      PubDate: 2014-09-22T00:00:00Z
      Issue No: Vol. 5, No. 3 (2014)
       
 
 
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