نتایج جستجو برای: stop bands

تعداد نتایج: 85890  

2014
Khalid M. Ibrahim EL-Sayed M. El-Rabaie Abdel-Aziz T. Shalaby Ahmed S. Elkorany

A new unit cell composite right/left-handed (CRLH) metamaterial using microstrip technology with coupled line is proposed. It is simple and has a small size. The proposed unit cell can be designed in several frequency bands based on its geometrical parameters. The transition from LH to RH shows the balanced condition without the presence of stop band. Two designs for two different frequency ban...

2012
Alexander N. Poddubny Mikhail V. Rybin Mikhail F. Limonov Yuri S. Kivshar

Light localization in disordered systems and Bragg scattering in regular periodic structures are considered traditionally as two entirely opposite phenomena: disorder leads to degradation of coherent Bragg scattering whereas Anderson localization is suppressed by periodicity. Here we reveal a non-trivial link between these two phenomena, through the Fano interference between Bragg scattering an...

2012
SORINA CIURLEA CRISTINA A. DEHELEAN SIMONA CÎNTĂ PÎNZARU ALEXANDRA FĂLĂMAŞ ANCA MUREŞAN FELICIA LOGHIN

Cancer is one of the most studied pathology and early detection could be helpful for treatment or other types of interventions that may stop the fatal evolution. The preclinical studies can be applied on experimental models, especially on rodents. Cancer can be induced experimentally most often by the application of chemical carcinogens, tumor cells inoculation or xenografts. FT-Raman spectrosc...

2003
A. Khelif P. A. Deymier

We study theoretically the propagation of elastic waves in two-dimensional composite media composed of a square array of hollow steel cylinders embedded in water using the finite-difference time-domain method. These composite media constitute a class of acoustic band gap materials with narrow pass bands in their transmission stop bands. The frequency at which the pass band occurs is tunable by ...

2013
Naima Benmostefa M. Meliani H. Ouslimani

This paper presents a new concept to implement a tunable filter metamaterial with dual negative refraction composed of ferrite slabs and metallic resonators, including split-ring resonators (SRR), and short wire pairs. The ferrite slabs under an applied magnetics bias provide one magnetic resonance frequency band and the metallic resonators provide another one. The continuous wires within the m...

Journal: :journal of agricultural science and technology 2010
s. k. alavi panah r. goossens

to use remote sensing data effectively, one must understand the spectral characteristics of the particular features under investigations. to study the relationship between soil salinity and soil reflectance, four multispectral scanners (mss) and seven thematic mappers (tm bands) over the ardakan playa located on the central iranian desert margins were selected. in this study soil map, soil ...

2014
Christina F. Lavallee Christoph S. Herrmann Riklef Weerda René J. Huster

Humans are rarely faced with one simple task, but are typically confronted with complex stimulus constellations and varying stimulus-relevance in a given situation. Through modifying the prototypical stop-signal task and by combined recording and analysis of electroencephalography (EEG) and functional magnetic resonance imaging (fMRI), we studied the effects of stimulus relevance for the genera...

Journal: :Physical Review Letters 2021

Conventional photonic lattices, such as metamaterials and crystals, exhibit various interesting physical properties that are attributed to periodic modulations in lattice parameters. In this study, we introduce novel types of namely Fourier-component-engineered metasurfaces, do not possess the first Fourier harmonic component We demonstrate these metasurfaces support continuous high-$Q$ bound s...

2014
Imen Ben Trad Jean Marie Floch Hatem Rmili Lotfi Laadhar Mhamed Drissi Ben Trad

A planar elliptic broadband antenna with reconfigurable dual stop-bands performance was successfully designed and performed for multi-standard wireless communication systems. The proposed antenna consists of a broadband micro-strip fed printed monopole operating in the frequency range 0.75– 6GHz. The notch-band characteristic was obtained by printing two Open Loop Resonators (OLRs) on the front...

Journal: :The Journal of chemical physics 2017
Nicolas Sisourat Selma Engin Jimena D Gorfinkiel Sévan Kazandjian Přemysl Kolorenč Tsveta Miteva

Interatomic Coulombic Decay (ICD) is a general mechanism in which an excited atom can transfer its excess energy to a neighbor which is thus ionized. ICD belongs to the family of Feshbach resonance processes, and, as such, states undergoing ICD are characterized by their energy width. In this work, we investigate the computations of ICD widths using the R-matrix method as implemented in the UKR...

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