magnetic lignocellulosic fibers have good potential in applications such as information storage, security papers, electromagnetic shielding and etc. in this study unbleached bagasse fibers were used to fabricate magnetic paper by chemical co-precipitation method. lumen loading and precipitation of magnetic nanoparticles on the surface of fibers were carried out by in situ synthesis. then the fo...

The objective of this study was to determine the effect moisture content on cutting parameters and fracture characteristics spruce oak wood. Samples Norway (Picea abies (L.) H. Karst.) English (Quercus robur L.) were dried required then used for machinability test circular sawblade machine. Results indicate that force feed increase with increasing up fiber saturation point (FSP). When increases...

We present high-resolution spectroscopy of I(2) vapor that is loaded and trapped within the core of a hollow-core photonic crystal fiber (HC-PCF). We compare the observed spectroscopic features to those observed in a conventional iodine cell and show that the saturation characteristics differ significantly. Despite the confined geometry it was still possible to obtain sub-Doppler features with ...

The purpose of this demo is to introduce a new low-power wireless device for Wireless Sensor Networks (WSN) operating in the ISM 2.4Ghz band: the MagoNode. Thanks to a highly efficient RF front-end, that extends the radio range and increases link reliability, the MagoNode features outstanding RF performance, still containing energy consumption. The platform has been designed at the Department o...

Fiber Bragg gratings inscribed with a femtosecond laser using the point-by-point (PbP) technique have polarization dependent grating strength (PDGS) and exhibit birefringence. In this paper we quantify the dependence of these two properties on the ellipticity, position in the core and size of the micro-voids at the center of each refractive index modulation. We demonstrate that the effective mo...

High-power, high-speed photodetectors are the key components for analog fiber-optic links to provide large bandwidth, reduce RF insertion loss, and increase spurious free dynamic range and signal-to-noise ratio [l]. The performance of analog fiber optic links is limited by the maximum linear photocurrent of the photodetector [2]. Conventional high-speed detectors have small absorption volume an...

A prototype fiber-optic reflectance-mode pulse oximetry sensor and measurement system is developed for the purposes of estimating arterial oxygen saturation in the esophagus. A dedicated probe containing miniature right-angled glass prisms coupled to light sources and a photodetector by means of optical fibers is designed and used to record photoplethysmographic (PPG) signals from the esophagea...

A novel wavelength-switchable single-longitudinal-mode (SLM) dual-wavelength erbium-doped fiber laser (EDFL) implemented based on a sigma architecture that is composed of a ring loop and a linear standing wave arm is experimentally demonstrated. Gain competition that prevents stable dual-wavelength oscillation is effectively suppressed by placing the gain medium in the standing-wave arm and by ...