In brief

Abstract

PAGE 192 Researchers in the USA propose a two-dimensional pixelating technique for actuating liquid metal. Continuous electrowetting is used to move the liquid metal between reservoirs, which resulted in ON and OFF switching of adjacent pixels. This method removes the need for a physical switch to be employed in pixelated antennas. PAGE 227 An indoor positioning method based on a single LED and camera is given in work from China. By simultaneously measuring both the strength and the angle of arrival of the LED light, ‘fingerprint’ signals of the receiver position are identified. This work is proposed as an optimum solution for indoor positioning systems using optical communication. Liquid metal actuation between pixels using continuous electrowetting. PAGE 229 Work from Iran presents a low power, all-optical switch consisting of a microfibre loop resonator in one arm of a microfibre Mach–Zehnder interferometer. The design is numerically predicted to offer easy configuration, small dimensions, low threshold power and fast switching times in optical signal processing and communications applications. A single camera and LED are used to determine receiver positions indoors. PAGE 194 Researchers in Egypt are developing an accumulated grey level image (AGLI) method for lung cancer detection. The method works by classifying genetic mutations in DNA sequences of effective genes in lung cancer, using a combination of principal component analysis and AGLI. The reported computational approach could be used as a diagnostic aid to classify genetic mutations associated with lung cancer. Numerical predictions propose an efficient all-optical switch design for optical communication applications. PAGE 187 A simple polarisation reconfigurable printed monopole antenna is presented by researchers in China. The antenna structure consists of a printed monopole, two switching circuits, and a reflector, and is shown to have four operational states that are accessed by controlling the ON/OFF states of the switching circuits. The antenna is a candidate for use in multi-frequency and multi-polarisation systems. A computational diagnostic approach for identifying genetic mutations associated with lung cancer. Four operational states reported for a simple polarisation reconfigurable printed monopole antenna.