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  Subjects -> PHYSICS (Total: 764 journals)
    - ELECTRICITY AND MAGNETISM (8 journals)
    - MECHANICS (20 journals)
    - NUCLEAR PHYSICS (44 journals)
    - OPTICS (91 journals)
    - PHYSICS (554 journals)
    - SOUND (18 journals)
    - THERMODYNAMICS (29 journals)

PHYSICS (554 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: 16)
Advanced Functional Materials     Hybrid Journal   (Followers: 38)
Advanced Materials     Hybrid Journal   (Followers: 384)
Advances in Condensed Matter Physics     Open Access   (Followers: 8)
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: 2)
Advances in Materials Physics and Chemistry     Open Access   (Followers: 16)
Advances in Natural Sciences: Nanoscience and Nanotechnology     Open Access   (Followers: 14)
Advances in OptoElectronics     Open Access   (Followers: 3)
Advances In Physics     Hybrid Journal   (Followers: 8)
Advances in Physics Theories and Applications     Open Access   (Followers: 6)
Advances in Remote Sensing     Open Access   (Followers: 8)
Advances in Synchrotron Radiation     Hybrid Journal   (Followers: 1)
AIP Advances     Open Access   (Followers: 5)
AIP Conference Proceedings     Full-text available via subscription   (Followers: 2)
American Journal of Applied Sciences     Open Access   (Followers: 30)
American Journal of Condensed Matter Physics     Open Access   (Followers: 4)
American Journal of Signal Processing     Open Access   (Followers: 8)
Analysis and Mathematical Physics     Hybrid Journal   (Followers: 2)
Annalen der Physik     Hybrid Journal   (Followers: 2)
Annales Geophysicae (ANGEO)     Open Access   (Followers: 4)
Annales Henri PoincarĂ©     Hybrid Journal   (Followers: 1)
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: 6)
Applied Composite Materials     Hybrid Journal   (Followers: 9)
Applied Physics     Open Access  
Applied Physics A     Hybrid Journal   (Followers: 9)
Applied Physics Frontier     Open Access   (Followers: 1)
Applied Physics Letters     Hybrid Journal   (Followers: 26)
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)
ASTRA Proceedings     Open Access  
Astronomy & Geophysics     Hybrid Journal   (Followers: 1)
Astrophysical Journal Letters     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: 33)
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 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: 50)
Composites Part B : Engineering     Hybrid Journal   (Followers: 70)
Computational Materials Science     Hybrid Journal   (Followers: 19)
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: 11)
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  
   [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  [56 journals]
  • Making germanium, an indirect band gap semiconductor, suitable for
           light-emitting devices

    • Authors: Thi Kim Phuong Luong; Vinh Le Thanh, Abdelhamid Ghrib, Moustafa El Kurdi Philippe Boucaud
      First page: 015013
      Abstract: Germanium (Ge) is a group-IV indirect band gap semiconductor but the difference between its direct and indirect band gap is only 140 meV. It has been shown that when Ge is subjected to a tensile strain and a heavy n -doping level, room-temperature photoluminescence (PL) can be greatly enhanced. Among these two factors, achieving a heavy n -doping level in Ge (i.e., electron concentrations higher than 1 × 10 19 cm −3 ) is a challenge since the solubility of most group-V elements (P, As, Sb) in Ge is very low. We report here Ge growth on silicon substrates using molecular beam epitaxial (MBE) technique. To enhance the n -doping level in Ge, a specific n -doping process based on the decomposition of the GaP compound has been implemented. The GaP decomposition allows producing P 2 molecules, which have a higher sticking coefficient than that of P 4 molecules. We show that phosphorus doping at low substrate temperatures fo...
      Citation: Advances in Natural Sciences: Nanoscience and Nanotechnology
      PubDate: 2015-01-06T00:00:00Z
      Issue No: Vol. 6, No. 1 (2015)
       
  • Quantum theory of plasmons at metallic spherical surface

    • Authors: Van Hieu Nguyen; Bich Ha Nguyen Van Thanh Ngo
      First page: 015014
      Abstract: In the present work the functional integral technique was applied to the study of the collective excitations of electron gas at a spherical surface. The quanta of these collective excitations are the surface plasmons. Starting from the fundamental principles of the quantum theory, the generating functionals of the many-electron system in a spherical surface were introduced in two different cases, when the electron–electron Coulomb interaction is absent or is present. By means of the Hubbard–Stratonovich transformation, the generating functional of the electron system in the presence of the electron–electron interaction was transformed into that of a scalar field, the effective action of this scalar field was established and the plasmon field was introduced. Then the expression of the Hamiltonian of the quantum field of plasmons was derived and the system of algebraic equations determining the energies of plasmons was established.
      Citation: Advances in Natural Sciences: Nanoscience and Nanotechnology
      PubDate: 2015-01-06T00:00:00Z
      Issue No: Vol. 6, No. 1 (2015)
       
  • Synthesis and application of quantum dots-based biosensor

    • Authors: Ngoc Hai Nguyen; Thi Giang Duong, Van Nong Hoang, Nam Thang Pham, Tran Cao Dao Thu Nga Pham
      First page: 015015
      Abstract: Trichlorfon (TF) is one of the organophosphorus pesticides used widely in agriculture. The content of this paper includes the exploitation of dominant optical properties of the quantum dots consisting of a core and multilayer shell CdSe/ZnSe/ZnS (QD). A biosensor was fabricated on the basis of this QD for rapidly detecting the residues of trichlofon pesticide with concentrations of 0.01 ppm to 5 ppm. The measurements were carried out to examine the morphology of the QD structure and fluorescent properties such as transmission electron microscopy, x-ray diffraction, absorption spectroscopy and fluorescence spectroscopy. The linking mechanism among biological agents and the specificity of the acetylcholinesterase enzymes in hydrolysis reaction of acetylthiolcholine was applied to create the changes in surroundings, affecting the fluorescence of the QD. In particular, the mechanism of bioluminescence resonance energy transfer (BRET) is discussed to clearly explain the recombination ...
      Citation: Advances in Natural Sciences: Nanoscience and Nanotechnology
      PubDate: 2015-01-06T00:00:00Z
      Issue No: Vol. 6, No. 1 (2015)
       
  • Air purification equipment combining a filter coated by silver
           nanoparticles with a nano-TiO 2 photocatalyst for use in hospitals

    • Authors: Thanh Son Le; Trong Hien Dao, Dinh Cuong Nguyen, Hoai Chau Nguyen I L Balikhin
      First page: 015016
      Abstract: X-ray diffraction, scanning electron microscopy and transmission electron microscopy showed that TiO 2 particles synthesized by a sol–gel procedure exhibited uniform size about 16–20 nm. This nanopowder was deposited on a porous quartz tube ( D = 74 mm, L = 418 mm, deposit density ∼16.4 mg cm −2 ) through an intermediate adhesive polymethylmethacrylate layer to manufacture a photocatalytic filter tube. A polypropylene pre-filter was coated with a nanosilver layer (particle size ∼20 nm) prepared by aqueous molecular solution method. An air cleaner of 250 m 3 h −1 capacity equipped with this pre-filter, an electrostatic air filter, 4 photocatalytic filter tubes and 4 UV-A lamps (36 W) presented the high degradation ability for certain volatile organic compounds (VOCs), bacteria and fungi. The VOCs degradation performances of the equipment with respect to divers compounds are different: in a 10 m 3 box, 91.6% of butanol w...
      Citation: Advances in Natural Sciences: Nanoscience and Nanotechnology
      PubDate: 2015-01-06T00:00:00Z
      Issue No: Vol. 6, No. 1 (2015)
       
  • Evolution of magnetism in UCoGe and UCoAl with Ru doping

    • Authors: Michal Vališka; Petr Opletal, Jiří Pospíšil, Jan Prokleška Vladimír Sechovský
      First page: 015017
      Abstract: Intriguing magnetic properties of the UCo 1− x Ru x Ge and UCo 1− x Ru x Al pseudoternary systems studied on single crystals are presented and discussed in terms of anisotropic 5f-ligand hybridization as the principal driving mechanism. Ferromagnetism of the ferromagnetic superconductor UCoGe is initially stabilized by Ru substitutions for Co (superconductivity suppressed already for x  > 0.01) providing maximum Curie temperature ( T C ), spontaneous magnetic moment ( μ s ) and magnetic entropy ( S mag ) for 10% Ru. Further increasing Ru concentration leads to gradual suppression of these parameters towards a ferromagnetic quantum critical point (FM QCP) at ≈0.31. Non-Fermi liquid scaling of specific heat and electrical resistivity is observed in the vicinity of FM QCP. The itinerant electron metamagnet UCoAl is transformed to a ferromagnet by only 0.5% Ru substitut...
      Citation: Advances in Natural Sciences: Nanoscience and Nanotechnology
      PubDate: 2015-01-14T00:00:00Z
      Issue No: Vol. 6, No. 1 (2015)
       
  • Comparison of some morphological and absorption properties of the
           nanoparticles Au/TiO 2 embedded films prepared by different
           technologies on the substrates for application in the plasmonic
           solar cell

    • Authors: Khac An Dao; Thi Thuy Nguyen, Thi Mai Huong Nguyen Duy Thien Nguyen
      First page: 015018
      Abstract: The nanoparticle Au/TiO 2 embedded system plays a very important role in the plasmonic solar cell. The features of the nanoparticle embedded system will determine light enhancement, light absorption, scattering and localized surface plasmon resonance (LSPR), aiming to enhance the efficiency of the plasmatic solar cell. The characterizations of nanoparticles Au/TiO 2 embedded system consist of many parameters: the sizes of nanoparticles (Au, TiO 2 ), the weight ratio of Au to TiO 2 , the thickness of the single layer or multilayer of Au/TiO 2 , the arrangements of Au and TiO 2 nanoparticles in integrated-matrix system, the light absorption, scattering and LSPR capacities of the Au/TiO 2 system. These parameters, however, depend on the technological conditions, the structure of plasmonic solar cell as well as the used substrate materials. This paper presents some technological developments for nanoparticles Au/TiO
      Citation: Advances in Natural Sciences: Nanoscience and Nanotechnology
      PubDate: 2015-01-14T00:00:00Z
      Issue No: Vol. 6, No. 1 (2015)
       
  • Nanoparticles: synthesis and applications in life science and
           environmental technology

    • Authors: Hoang Luong Nguyen; Hoang Nam Nguyen, Hoang Hai Nguyen, Manh Quynh Luu Minh Hieu Nguyen
      First page: 015008
      Abstract: This work focuses on the synthesis, functionalization, and application of gold and silver nanoparticles, magnetic nanoparticles Fe 3 O 4 , combination of 4-ATP-coated silver nanoparticles and Fe 3 O 4 nanoparticles. The synthesis methods such as chemical reduction, seeding, coprecipitation,and inverse microemulsion will be outlined. Silica- and amino-coated nanoparticles are suitable for several applications in biomedicine and the environment. The applications of the prepared nanoparticles for early detection of breast cancer cells, basal cell carcinoma, antibacterial test, arsenic removal from water, Herpes DNA separation, CD4 + cell separation and isolation of DNA of Hepatitis virus type B (HBV) and Epstein–Barr virus (EBV) are discussed. Finally, some promising perspectives will be pointed out.
      Citation: Advances in Natural Sciences: Nanoscience and Nanotechnology
      PubDate: 2014-12-31T00:00:00Z
      Issue No: Vol. 6, No. 1 (2014)
       
  • Boron difluoride complexes of 2′-hydroxychalcones and curcuminoids
           as fluorescent dyes for photonic applications

    • Authors: Anthony D’Aléo; Abdellah Felouat Frédéric Fages
      First page: 015009
      Abstract: The field of fluorescent boron complexes has witnessed tremendous developments in recent years. In that context, we have investigated two series of boron difluoride complexes based on 2′-hydroxychalcone and curcuminoid ligands that represent naturally occurring pigment structures. The dyes display significantly large Stokes shift values, indicating that an ICT state is involved as lower-energy state in the singlet manifold. Remarkably they are also fluorescent in the solid-state, with emission wavelengths usually in the visible and mainly in the near infrared (NIR). It is especially intriguing that those dyes experience strong π -interactions in the crystal phase. We have observed that the formation of those highly stacked structures was not detrimental to solid-state emission and could even be exploited for the generation of efficient NIR emitters. For example, the boron complexes of curcuminoid ligands can be used to generate NIR fluorescent organic nanoparticles with lar...
      Citation: Advances in Natural Sciences: Nanoscience and Nanotechnology
      PubDate: 2014-12-31T00:00:00Z
      Issue No: Vol. 6, No. 1 (2014)
       
  • Charge transport in dye-sensitized solar cell

    • Authors: Masatoshi Yanagida
      First page: 015010
      Abstract: The effect of charge transport on the photovoltaic properties of dye-sensitized solar cells (DSCs) was investigated by the experimental results and the ion transport. The short current photocurrent density ( J sc ) is determined by the electron transport in porous TiO 2 when the diffusion limited current ( J dif ) due to the ##IMG## [http://ej.iop.org/images/2043-6262/6/1/015010/ansn506259ieqn1.gif] {${{{\rm I}}_{3}}^{-}$} transport is larger than the photo-generated electron flux ( J g ) estimated from the light harvesting efficiency of dye-sensitized porous TiO 2 and the solar spectrum. However, the J sc value is determined by the ion transport in the electrolyte solution at J dif 
      Citation: Advances in Natural Sciences: Nanoscience and Nanotechnology
      PubDate: 2014-12-31T00:00:00Z
      Issue No: Vol. 6, No. 1 (2014)
       
  • The impact of graphene oxide particles on viscosity stabilization for
           diluted polymer solutions using in enhanced oil recovery at HTHP
           offshore reservoirs

    • Authors: Ba Dung Nguyen; Trung Kien Ngo, Truong Han Bui, Duy Khanh Pham, Xuan Loc Dinh Phuong Tung Nguyen
      First page: 015012
      Abstract: Over 60% of the original oil in a place (OOIP) is retained in a reservoir after conventional methods have been exploited. Application of enhanced oil recovery (EOR) technology gives an additional chance to get out possibly about 20% more oil from the reservoir. The use of water-soluble polymers improves the water–oil mobility ratio, therefore, the displacement efficiency increased, and leads to enhanced oil recovery. High-molecular-weight polyacrylamide group is widely and successfully used in EOR. But no commercial polymer composition can be used in conditions of high temperature and hardness brine offshore reservoirs yet. To avoid the time consumption and high expense for selection and synthesis of the appropriate-structural polymer for EOR application, we attempt to find additives to enhance the thermal stability of polymer solutions. In this paper, we report the results of improved viscosity stability of diluted polymer/seawater solutions aged at reservoir conditions for 31da...
      Citation: Advances in Natural Sciences: Nanoscience and Nanotechnology
      PubDate: 2014-12-31T00:00:00Z
      Issue No: Vol. 6, No. 1 (2014)
       
 
 
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