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  Subjects -> PHYSICS (Total: 780 journals)
    - ELECTRICITY AND MAGNETISM (9 journals)
    - MECHANICS (19 journals)
    - NUCLEAR PHYSICS (48 journals)
    - OPTICS (90 journals)
    - PHYSICS (565 journals)
    - SOUND (20 journals)
    - THERMODYNAMICS (29 journals)

PHYSICS (565 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: 16)
Advanced Composite Materials     Hybrid Journal   (Followers: 51)
Advanced Functional Materials     Hybrid Journal   (Followers: 41)
Advanced Materials     Hybrid Journal   (Followers: 223)
Advanced Science Focus     Free   (Followers: 1)
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: 5)
Advances in High Energy Physics     Open Access   (Followers: 13)
Advances in Imaging and Electron Physics     Full-text available via subscription   (Followers: 3)
Advances in Materials Physics and Chemistry     Open Access   (Followers: 16)
Advances in Natural Sciences: Nanoscience and Nanotechnology     Open Access   (Followers: 15)
Advances in OptoElectronics     Open Access   (Followers: 3)
Advances In Physics     Hybrid Journal   (Followers: 9)
Advances in Physics Theories and Applications     Open Access   (Followers: 8)
Advances in Remote Sensing     Open Access   (Followers: 9)
AIP Advances     Open Access   (Followers: 6)
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: 5)
American Journal of Signal Processing     Open Access   (Followers: 9)
Analysis and Mathematical Physics     Hybrid Journal   (Followers: 2)
Annalen der Physik     Hybrid Journal   (Followers: 3)
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: 4)
Annals of Physics     Hybrid Journal   (Followers: 3)
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: 7)
Applied Composite Materials     Hybrid Journal   (Followers: 36)
Applied Physics A     Hybrid Journal   (Followers: 10)
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: 8)
Applied Radiation and Isotopes     Hybrid Journal   (Followers: 5)
Applied Remote Sensing Journal     Open Access   (Followers: 10)
Applied Spectroscopy     Full-text available via subscription   (Followers: 15)
Applied Spectroscopy Reviews     Hybrid Journal   (Followers: 3)
Archive for Rational Mechanics and Analysis     Hybrid Journal   (Followers: 3)
Asia Pacific Physics Newsletter     Hybrid Journal  
ASTRA Proceedings     Open Access  
Astronomy & Geophysics     Hybrid Journal   (Followers: 3)
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: 10)
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: 35)
Biomedical Engineering, IEEE Reviews in     Full-text available via subscription   (Followers: 16)
Biomedical Engineering, IEEE Transactions on     Hybrid Journal   (Followers: 14)
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: 42)
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)
Case Studies in Nondestructive Testing and Evaluation     Open Access  
Cells     Open Access   (Followers: 1)
Central European Journal of Physics     Hybrid Journal   (Followers: 2)
CERN courier. International journal of high energy physics     Free   (Followers: 1)
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  
Cogent Physics     Open Access  
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: 101)
Composites Part B : Engineering     Hybrid Journal   (Followers: 124)
Computational Astrophysics and Cosmology     Open Access  
Computational Condensed Matter     Open Access  
Computational Materials Science     Hybrid Journal   (Followers: 21)
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: 12)
Continuum Mechanics and Thermodynamics     Hybrid Journal   (Followers: 3)
Contributions to Plasma Physics     Hybrid Journal   (Followers: 2)

        1 2 3 4 5 6 | Last

Journal Cover   Advances in Natural Sciences: Nanoscience and Nanotechnology
  [15 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]
  • A 2D analytical cylindrical gate tunnel FET (CG-TFET) model: impact of
           shortest tunneling distance

    • Authors: S Dash; G P Mishra
      First page: 035005
      Abstract: A 2D analytical tunnel field-effect transistor (FET) potential model with cylindrical gate (CG-TFET) based on the solution of Laplace?s equation is proposed. The band-to-band tunneling (BTBT) current is derived by the help of lateral electric field and the shortest tunneling distance. However, the analysis is extended to obtain the subthreshold swing (SS) and transfer characteristics of the device. The dependency of drain current, SS and transconductance on gate voltage and shortest tunneling distance is discussed. Also, the effect of scaling the gate oxide thickness and the cylindrical body diameter on the electrical parameters of the device is analyzed.
      Citation: Advances in Natural Sciences: Nanoscience and Nanotechnology
      PubDate: 2015-05-15T00:00:00Z
      Issue No: Vol. 6, No. 3 (2015)
       
  • Hydrothermal synthesis and NH 3 gas sensing property of WO 3 nanorods at
           low temperature

    • Authors: Dac Dien Nguyen; Duc Vuong Dang Duc Chien Nguyen
      First page: 035006
      Abstract: One-dimensional self-assembled single-crystalline hexagonal tungsten trioxide (WO 3 ) nanostructures were synthesized by wet chemical-assisted hydrothermal processing at 120 ?C for 24 h using sodium tungstate and hydrochloric acid. Urchin-like hierarchical nanorods (petal size: ?16 nm diameter and 110 nm length) were obtained. The samples were characterized by field emission scanning electron microscopy, transmission electron microscopy, energy dispersive x-ray spectroscopy and x-ray diffraction. Sensors based on WO 3 nanorods were fabricated by coating them on SiO 2 /Si substrate attached with Pt interdigitated electrodes. NH 3 gas-sensing properties of WO 3 nanorods were measured at different temperatures ranging from 50 ?C to 350 ?C and the response was evaluated as a function of ammonia gas concentration. The gas-sensing results reveal that WO 3 nanorods sensor exhibits high sensitivity and selectivity to NH 3
      Citation: Advances in Natural Sciences: Nanoscience and Nanotechnology
      PubDate: 2015-05-15T00:00:00Z
      Issue No: Vol. 6, No. 3 (2015)
       
  • Optimization of copper electroplating process applied for microfabrication
           on flexible polyethylene terephthalate substrate

    • Authors: Nguyen Ngan Le; Thi Cam Hue Phan, Anh Duy Le, Thi My Dung Dang Mau Chien Dang
      First page: 035007
      Abstract: Electroplating is an important step in microfabrication in order to increase thickness of undersized parts up to a few micrometers with a low-cost, fast method that is easy to carry out, especially for metals such as copper, nickel, and silver. This important step promotes the development of the fabrication technology of electronic devices on a flexible substrate, also known as flexible electronic devices. Nevertheless, this technology has some disadvantages such as low surface uniformity and high resistivity. In this paper, parameters of copper electroplating were studied, such as the ratio of copper (II) sulfate (CuSO 4 ) concentration to sulfuric acid (H 2 SO 4 ) concentration and electroplating current density, in order to obtain low resistivity and high surface uniformity of the copper layer. Samples were characterized by scanning electron microscopy (SEM), four-point probe, and surface profiler. The results showed that the sample resistivity could...
      Citation: Advances in Natural Sciences: Nanoscience and Nanotechnology
      PubDate: 2015-05-15T00:00:00Z
      Issue No: Vol. 6, No. 3 (2015)
       
  • Marine seaweed Sargassum wightii extract as a low-cost sensitizer for ZnO
           photoanode based dye-sensitized solar cell

    • Authors: Muthusamy Anand; Santhanakrishnan Suresh
      First page: 035008
      Abstract: The exploitation of marine seaweed ( Sargassum wightii ) extract as a low-cost sensitizer for a ZnO photoanode based solar cell is reported. The UV?vis absorbance spectrum of the Sargassum wightii ( S. wightii ) extract has exhibited three absorption peaks at 412.5, 610 and 659.5 nm in visible region of the solar spectrum. The pigment analysis has confirmed the presence of photosynthetic pigments such as chlorophylls, carotenoids and fucoxanthin. The photovoltaic performance of the S. wightii extract as a sensitizer in ZnO photoanode based solar cell is examined under simulated solar light irradiation. The solar cell sensitized with the S. wightii extract has delivered a short-circuit photocurrent density ( J sc ) of 203 ? A cm ?2 , open-circuit photo-voltage ( V oc ) of 0.33 V, maximum peak power ( P max ) of 31.02 ? W, fill factor of 0.46 and an overall solar to electrical energy co...
      Citation: Advances in Natural Sciences: Nanoscience and Nanotechnology
      PubDate: 2015-05-15T00:00:00Z
      Issue No: Vol. 6, No. 3 (2015)
       
  • Magnetite Fe 3 O 4 nanoparticles synthesis by wet chemical reduction and
           their characterization

    • Authors: S H Chaki; Tasmira J Malek, M D Chaudhary, J P Tailor M P Deshpande
      First page: 035009
      Abstract: The authors report the synthesis of Fe 3 O 4 nanoparticles by wet chemical reduction technique at ambient temperature and its characterization. Ferric chloride hexa-hydrate (FeCl 3???6H 2 O) and sodium boro-hydrate (NaBH 4 ) were used for synthesis of Fe 3 O 4 nanoparticles at ambient temperature. The elemental composition of the synthesized Fe 3 O 4 nanoparticles was determined by energy dispersive analysis of x-rays technique. The x-ray diffraction (XRD) technique was used for structural characterization of the nanoparticles. The crystallite size of the nanoparticles was determined using XRD data employing Scherrer?s formula and Hall?Williamson?s plot. Surface morphology of as-synthesized Fe 3 O 4 nanoparticles was studied by scanning electron microscopy. High resolution transmission electron microscopy analysis of the as-synthesized Fe 3 O 4 nanoparticles ...
      Citation: Advances in Natural Sciences: Nanoscience and Nanotechnology
      PubDate: 2015-05-15T00:00:00Z
      Issue No: Vol. 6, No. 3 (2015)
       
  • Performance analysis of undoped cylindrical gate all around (GAA) MOSFET
           at subthreshold regime

    • Authors: B Jena; K P Pradhan, S Dash, G P Mishra, P K Sahu S K Mohapatra
      First page: 035010
      Abstract: In this work the sensitivity of process parameters like channel length ( L ), channel thickness ( t Si ), and gate work function ( ? M ) on various performance metrics of an undoped cylindrical gate all around (GAA) metal-oxide-semiconductor field effect transistor (MOSFET) are systematically analyzed. Undoped GAA MOSFET is a radical invention as it introduces a new direction for transistor scaling. In conventional MOSFET, generally the channel doping concentration is very high to provide high on-state current, but in contrary it causes random dopant fluctuation and threshold voltage variation. So, the undoped nature of GAA MOSFET solves the above complications. Hence, we have analyzed the electrical characteristics as well as the analog/RF performances of undoped GAA MOSFET through Sentaurus device simulator.
      Citation: Advances in Natural Sciences: Nanoscience and Nanotechnology
      PubDate: 2015-06-19T00:00:00Z
      Issue No: Vol. 6, No. 3 (2015)
       
  • Effect of chemical functionalization groups on Zr 6 -AzoBDC to enhance H 2
           , CH 4 storage and CO 2 capture: a theoretical investigation

    • Authors: Khung M Trang; Hung Q Pham Nguyen-Nguyen Pham-Tran
      First page: 035011
      Abstract: Grand canonical Monte Carlo (GCMC) simulation combined with the ideal adsorbed solution theory (IAST) and a statistical method were utilized to investigate the effect of functional groups on zirconium oxide based metal-organic frameworks (MOFs) Zr 6 -AzoBDC (Zr 6 A) for the gases (H 2 , CH 4 ) adsorption property and CO 2 /CH 4 selectivity under low pressure. The results showed that phenyl groups containing nitrogen (pyridine, pyrimidine) and thiophene group enhance the gas affinity with MOFs, therefore increasing both gravimetric and volumetric uptake. In addition, this behavior can also cause significantly improved selective capture of CO 2 from CO 2 /CH 4 gas mixtures. Among functional groups studied, the sulfonic acid group can potentially improve CH 4 , CO 2 uptake and H 2 isosteric heat of adsorption. These findings would play a vital role in designing new materi...
      Citation: Advances in Natural Sciences: Nanoscience and Nanotechnology
      PubDate: 2015-06-19T00:00:00Z
      Issue No: Vol. 6, No. 3 (2015)
       
  • Trace detection of herbicides by SERS technique, using SERS-active
           substrates fabricated from different silver nanostructures deposited
           on silicon

    • Authors: Tran Cao Dao; Truc Quynh Ngan Luong, Tuan Anh Cao, Ngoc Hai Nguyen, Ngoc Minh Kieu, Thi Thuy Luong Van Vu Le
      First page: 035012
      Abstract: In this report we present the initial results of the use of different silver nanostructures deposited on silicon for trace detection of paraquat (a commonly used herbicide) using the surface-enhanced Raman scattering (SERS) effect. More specifically, the SERS-active substrates were fabricated from silver nanoparticles (AgNPs) deposited onto the flat surface of a silicon wafer (AgNPs@Si substrate), as well as on the surface of an obliquely aligned silicon nanowire (SiNW) array (AgNPs@SiNWs substrate), and from silver nanodendrites (AgNDs) deposited onto the flat surface of a silicon wafer (AgNDs@Si substrate). Results showed that with the change of the structure of the SERS-active substrate, higher levels of SERS enhancement have been achieved. Specifically, with the fabricated AgNDs@Si substrate, paraquat concentration as low as 1 ppm can be detected.
      Citation: Advances in Natural Sciences: Nanoscience and Nanotechnology
      PubDate: 2015-06-19T00:00:00Z
      Issue No: Vol. 6, No. 3 (2015)
       
  • Structural and photoluminescent properties of nanosized BaMgAl 10 O 17 :Eu
           2+ blue-emitting phosphors prepared by sol-gel method

    • Authors: Hao Van Bui; Tu Nguyen, Manh Cuong Nguyen, Trong An Tran, Ha Le Tien, Hao Tam Tong, Thi Kim Lien Nguyen Thanh Huy Pham
      First page: 035013
      Abstract: We report on the photoluminescent properties of Ba 0.9 Eu 0.1 MgAl 10 O 17 (BAM) phosphors in correlation with the host crystalline structures. The phosphors were synthesized by citrate sol-gel process, followed by a sintering and a reduction step, both at elevated temperatures. We found that the phosphors were amorphous when sintered at temperatures below 900 ?C. At 1000 ?C, the crystalline structure was mainly that of BaAl 2 O 4 phase. The BaMgAl 10 O 17 phase appeared at 1100 ?C, and became dominant with increasing temperature. At 1300 ?C, the BaAl 2 O 4 phase almost disappeared, and only BaMgAl 10 O 17 features were found. The luminescent characteristics of the phosphors were closely related to the structures of the host lattice. Under the same reduction conditions, the phosphors sintered at 1000 ?C showed the emission of both Eu 3+ and Eu 2+ . F...
      Citation: Advances in Natural Sciences: Nanoscience and Nanotechnology
      PubDate: 2015-06-19T00:00:00Z
      Issue No: Vol. 6, No. 3 (2015)
       
  • n-Hexane hydro-isomerization over promoted Pd/HZSM-5 catalysts

    • Authors: Thi Kim Thoa Dao; Cam Loc Luu
      First page: 035014
      Abstract: A series of Pd/HZSM-5 catalysts modified by various metallic species, including Co, Ni, Fe, Re, and Cu, was prepared by sequential impregnation. Contents of Pd and second metals in modified catalysts were 0.8 and 1.0 wt%, respectively. Physico-chemical characteristics of catalysts were investigated by nitrogen physi-sorption (BET), x-ray diffraction (XRD), transmission electron microscopy (TEM), ammonia temperature programmed desorption (NH 3 -TPD), temperature programmed reduction (TPR) and hydrogen pulse chemisorption (HPC). Coke formation was studied by the method of thermogravimetric analysis (TGA). The activities of catalysts in n-hexane isomerization were studied in a micro-flow reactor under atmospheric pressure at 250 ?C, and molar ratio of H 2 : n-hexane of 5.92. It was found that Co, Ni, Fe, and Re additives exhibited geometric and electronic effects toward Pd/HZSM-5 catalyst, leading to an enhancement of its activity and stability. On the contrary, Cu...
      Citation: Advances in Natural Sciences: Nanoscience and Nanotechnology
      PubDate: 2015-06-19T00:00:00Z
      Issue No: Vol. 6, No. 3 (2015)
       
 
 
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