“Smart”, stimuli-responsive photonic crystals (PCs) for label-free biological, chemical and physical sensing applications have recently garnered significant attention from various scientific communities, such as photonics, materials chemistry and biotechnology and represent a fast growing research field. Particular interest is attracted by conceptually simple, yet versatile one-dimensional PCs,...

Personal communications services (PCS’s) and future broad-band wireless systems are and will continue to be driven mainly by three challenging objectives: high-spectrum reuse efficiency, high-quality channels, and low infrastructure costs. We propose a new interleaved narrow-beam trisector cell (INBTC) architecture with a newly developed interleaved channel assignment (ICA) scheme to achieve th...

In this paper, a novel current inversion algorithm from X-band marine radar images is proposed. The routine, for which deep water is assumed, begins with 3-D FFT of the radar image sequence, followed by the extraction of the dispersion shell from the 3-D image spectrum. Next, the dispersion shell is converted to a polar current shell (PCS) using a polar coordinate transformation. After removing...

Ag(+) mediated aggregation behaviour of two different amphiphilic zinc phthalocyanines (Zn-Pcs) (symmetric and asymmetric) has been investigated in solution, at the air-water interface and in Langmuir-Blodgett (LB) films transferred onto glass substrates. A 4 : 1 ([Ag(+)]/[Pc]) complexation was observed for both symmetric and asymmetric Zn-Pcs at high [Ag(+)] concentrations which led to the for...

We report the generation of harmonic noise-like mode-locked pulses in a thulium-doped fiber laser. In this laser, mode-locking can be realized through nonlinear polarization rotation (NPR) technique. The ring cavity configuration uses 5 m Tm-doped dual-cladding fiber, as gain medium, pumped by 793 nm diode couple controllers (PCs) and polarization-dependent isolator to form polarization-rotatin...

one of the main problems following road accidents is brain injury after which death and disability in the most active population occurs. considering the fact that there is no definite clinical treatment for repair of damaged brain tissue, the present study examined the effects of autologous adult neural stem/progenitor cells (ns/pcs) seeded in a nanoscaffold named puramatrix in acute brain inju...

A novel method for control of convective boundary layer instabilities using metamaterial concepts is investigated. Attenuation Tollmien–Schlichting (TS) waves with surface-embedded one-dimensional phononic crystals (PCs) theoretically and numerically modeled, capitalizing on the inherent frequency band stop PCs. The PC tuned to targeted TS wave characteristics through use analytical models deri...

An internal triple-band antenna fed by a microstrip line is proposed for operating PCS, IMT-2000, and Bluetooth bands. By using the two branchs of meander line, the desired resonant frequencies can be achieved. A broadband characteristic for each band is optimized by tunning the parts of radiating patch and size of each strip line segments. The proposed antenna and substrate are small enough to...