U, GaAs. b C tt 45 Q) mc) d w the direction of observation) appear both in the forward and in Bragg . & t o , t; bJ c diffracted directions in monochromatic synchrotron radiation diffraction This Treviously unobserved phenomenon can be explained in terms w m 0 G, 4 imaging. Of planar defects (interfaces) or platelets which affects the absorpcion coefficient in anomalous transmission. Such regio...

the gold mineralization in kurdistan province of iran was classified as shear zone gold type by some of the researchers. in the current study, the geochemical samples collected from the secondary environment, stream sediments, at the sw of saqquez area were used to investigate the geochemical characteristics of the gold mineralized zones in this environment. the multi-variant statistical analys...

We uncover an alternative mechanism for anomalous Hall effect. In particular, we investigate the magnetisation dynamics of an insulating ferromagnet (FM) deposited on the surface of a three-dimensional topological insulator (TI), subject to an external voltage. The spin-polarised current on the TI surface induces a spin-transfer torque on the magnetisation of the top FM while its dynamics can c...

Hailu Luo, Wei Hu, Xunong Yi, Haiying Liu, and Jing Zhu Laboratory of Light Transmission Optics, South China Normal University, Guangzhou 510630, China (Dated: June 8, 2006) Abstract It is found that the amphoteric refraction, i.e. the refraction can be either positive or negative depending on the incident angles, could occur at a planar interface associated with a uniaxially anisotropic positi...

Here we demonstrate that the anomalous magnetic properties of iron oxide nanoparticles are correlated with defects in their interior. We studied the evolution of microstructure and magnetic properties of biphasic core|shell Fe(1-x)O|Fe(3-δ)O4 nanoparticles synthesized by thermal decomposition during their topotaxial oxidation to single-phase nanoparticles. Geometric phase analysis of high-resol...

We study the photoluminescence spectra of n-doped InP bulk wafers, both in the reflection and the transmission geometries relative to the excitation beam. From the observed spectra we estimate the spatial distribution of minority carriers allowing for the spectral filtering due to reabsorption of luminescence in the wafer. This distribution unambiguously demonstrates a non-exponential drop-off ...

We report on a 795 nm atomic filter consisting of a stimulated Raman gain amplifier together with normal Faraday anomalous dispersion optical filtering (FADOF) at the rubidium D1 line. The filter is operated with a single transmission peak. The gain of the filter's transmission light signal is enhanced up to 85-fold compared to case operating without a stimulated Raman transition. Based on atom...

We demonstrate atomic filtering of frequency-degenerate photon pairs from a sub-threshold optical parametric oscillator (OPO). The filter, a modified Faraday anomalous dispersion optical filter (FADOF), achieves 70% peak transmission simultaneous with 57 dB out-of-band rejection and a 445 MHz transmission bandwidth. When applied to the OPO output, only the degenerate mode, containing one-mode s...

Psychological approaches to the study of presence are limited, and those with experimental support even more limited. This work is an attempt to highlight the human factors involved which may lead to a better understanding of individual differences in relation to the experience of presence. We investigated the relationship between four cognitive factors namely absorption, creative imagination, ...

We need to know the real intentions of participants that are not expressed by verbal languages This means that not only verbal information but also non-verbal information (i e , gestures, facial expression, eyes of participant, etc.) is a very important factor We proposed and implemented MAJIC, a multi-party videoconferencing system that enables eye contact among people in remote places, with l...