Communications in Physics
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Evaluation of Simultaneous Fitting Method for \(\beta\)-Decay Half-Lives and \(\beta\)-Delayed Multi Neutron Emission Probabilities Developed for the Briken Experiment
Communications in Physics - Tập 28 Số 4 - 2018
This paper presents a Monte-Carlo code to simulate the time sequences of the \(\beta\)-decay following implantation of a continuous radioactive ion beam in to a segmented silicon detector. We extended our simulation to the \(\beta\)-delayed neutron process. Ananalis is procedure, which has been developed to obtain simultaneously the \(\beta\)-decay half-life and the \(\beta\)-delayed multi-neutron...... hiện toàn bộ
#analysis methodology #beta-delayed neutrons #Monte-Carlo simulation
Synthesis and Optical Properties of Colloidal Gold Nanoparticles for Biomedical Applications
Communications in Physics - Tập 21 Số 1 - 2011
The gold nanoparticle solutions are well known as an extremely sensitive biomedical analytical tool due to the strong dependence of their absorption in the visible range on the environment. In this work, the colloidal nano golds were synthesized from metal precursor chloroauric acid (HAuCl4) using trisodium citrate dehydrate (C6H5O7Na3) as reducing and stabilizing agents. The optical characterizat...... hiện toàn bộ
#Colloidal gold #Nanoparticles #Absorption #Surface Plasmon Resonance - SPR}
Detection of Luminescence Centers in Colloidal Cd\(_{0.3}\)Zn\(_{0.7}\)S Nanocrystals by Synchronous Luminescence Spectroscopy
Communications in Physics - Tập 30 Số 2 - 2020
With the advantages of selectivity, spectral resolution and reduction of interference on account of light scattering, synchronous luminescence spectroscopy (SLS) is successfully applied to analyze complex mixtures with overlapped emission and/or excitation spectra. In fact, it is difficult to clearly distinguish the contributions of various luminescence centers to low-energy band of semiconductor ...... hiện toàn bộ
#colloidal Cd0.3Zn0.7S nanocrystals #synchronous luminescence spectroscopy #luminescence centers
Transmittance Function of Two-ports Nonlinear Fiber Mach-Zehnder Interferometer
Communications in Physics - Tập 20 Số 4 - 2012
In this article a two-ports nonlinear fiber Mach-Zehnder interferometer is proposed. The expression for output-input intensity relation and the transmittance function are derived based on principle operation of optical coupler. The expression of coupling coefficient of coupler is presented. The bell shape of the transmittance function is simulated. The results lead to investigate bistability of t...... hiện toàn bộ
#Optical coupler #Optical Kerr Effect #Optical bistable device #Nonlinear Fiber Mach-Zehnder Interferometer
Dependence of Melting Process on Size and Edge Type of Graphene Nanoribbon
Communications in Physics - Tập 26 Số 4 - 2017
The study of variation of the size, armchair and zigzag types effects on the melting process of graphene nanoribbon. A numerical thermodynamical model has been devoted for the study. The phase transition has first order behaviour. The formation of different defects, ring size and coordination number is dependent on the size and the edge type of GNR. The nuclei of heating appear at temperature aro...... hiện toàn bộ
#graphene nanoribbon #armchair #zigzag #size dependence #defects #phase transition.
Magnetohydrodynamics in Presence of Electric and Magnetic charges
Communications in Physics - Tập 22 Số 2 - 2012
Starting from the generalized electromagnetic field equations of dyons, the magnetohydrodynamics (MHD) of plasma for particles carrying simultaneously the electric and magnetic charges (namely dyons), has been reformulated in terms of the electromagnetic duality. Consequently, the frequency of dyonic plasma is obtained for real value of wave number \(k\). In this case, only those generalized elect...... hiện toàn bộ
#Magnetohydrodynamics #plasma #dyons.
Facile synthesis and electrical characteristics of n-SnO2/p-NiO nanowire heterojunctions
Communications in Physics - Tập 29 Số 1 - 2019
In the current work, we report a facile synthesis of n-SnO2/p-NiO nanowire heterojunctions by a drop-coating approach. The pure SnO2 and NiO nanowires (NWs) were grown by chemical vapor deposition (CVD) and hydrothermal methods, respectively. Morphology, composition and crystal structures of the NWs and heterojunctions were investigated by means of field emission scanning electron microscopy (FESE...... hiện toàn bộ
#SnO2 #NiO #p-n heterojunction #I-V characterization
Investigation of Thermodynamic Properties of Metal Thin Film by Statistical Moment Method
Communications in Physics - Tập 23 Số 4 - 2014
The thermodynamic properties of the metal thin film with face-centered cubic structure at zero pressure are investigated using the statistical moment method \((SMM)\), including the anharmonicity effects of thermal lattice vibrations. The Helmholtz free energy, linear thermal expansion coefficients, specific heats at the constant volume and those at the constant pressure, \(C_V\) and \(C_p\) are d...... hiện toàn bộ
#Statistical moment method #Thermodynamic properties #Anharmonic #Thin film.
Matching of Pumped and Laser Mode Volumes Inside a Diode Side-pumped Solid-state Laser
Communications in Physics - Tập 20 Số 3 - 2012
The condition to match the pumped-volume's width with the laser mode-volume's waist in a diode four side pumped solid-state laser is analyzed by numeric solutions of the approximation equation. As a result, the dependences of pumped volume's width on pumping diode parameter and laser mode volume's waist on cavity parameter were found. Such a matching condition was simultaneously determined by cavi...... hiện toàn bộ
Nonlinear Optical Tweezers As an Optical Method for Controlling Particles with High Trap Efficiency
Communications in Physics - Tập 29 Số 3 - 2019
Optical tweezers have seen as an essential tool for the manipulation dielectric microparticles and nanoparticles due to its non-contact action and high resolution of optical force. Up to now, there has been a lot of optical tweezers applications in the fields of biophysics, chemistry, medical science and nanoscience. Recently, optical tweezers have been theoretically and experimentally developing ...... hiện toàn bộ
#Nonlinear physics #Biophysics #Optical tweezers #DNA molecule.
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