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Electronic nose for clothes

24.05.2012

The British company Peratech proposes to sew a miniature electronic volatile compound sensor into clothing. A highly sensitive "electronic nose" will be able to warn a person about dangerous air pollution or an emergency in a timely manner.

The Peratech sensor quickly detects a variety of VOCs in the environment, from household paints to specific odors produced by a person's own skin. Many compounds do not smell, but an electronic sensor can alert you to the presence of harmful chemicals in a timely manner and prevent poisoning.

Many scientists have been trying for decades to create a simple and compact "electronic nose". However, according to Peratech representatives, they are the only ones who have managed to produce a sensor with a large change in electric charge and a size of several microns.

The sensor is assembled from quantum tunneling composites (QTCs), which have previously been used to make touch screens. In this material, electrons "jump" between conductors located on a non-conductive substrate. Any deformation, twisting or bending leads to the convergence of the conductors and the "jump" of the electrons.

Peratech's "electronic nose" is made from a polymer that absorbs volatile organic compounds. In the process, the polymer swells and causes the metal particles-conductors to approach each other. As a result, electrons begin to pass between the conductors and the sensor is triggered.

A feature of Peratech sensors is the ability to print them on a thin film. This allows them to be integrated into almost any devices, clothing and even food packaging. The scope of the new sensors is the widest: from protective workwear and trucks transporting products, to everyday clothes and smartphones.

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802.11ac Ecosystem Announced 07.03.2012

The increase in the number of mobile devices with a network connection and the growth in the popularity of multimedia applications are driving the need to move to Wi-Fi networks with increased bandwidth. Qualcomm Atheros decided to contribute to this by announcing the launch of the 802.11ac Wi-Fi ecosystem. Qualcomm's 802.11ac product portfolio targets mobile, home and office networks, smartphones, tablets, desktops, laptops, TVs, routers, gateways and access points. According to Qualcomm, the availability of a comprehensive set of solutions should help accelerate the adoption of the 802.11ac standard, which describes Wi-Fi networks with gigabit transmission speeds.

A key element of the ecosystem is the WCN3680 chip, which implements the functionality of 1x1 802.11ac Wi-Fi, Bluetooth and FM. It complements the 28nm Snapdragon family of processors and will be paired with Snapdragon S4 MSM8960 dual-core Krait and S4 APQ8064 quad-core Krait processors. The application area of WCN3680 is mobile devices such as tablets and smartphones, so it combines high bandwidth with low power consumption. It is rated up to 433Mbps and pin-level compatible with Qualcomm's Atheros WCN3660 802.11n chip, which should make it easier for developers and manufacturers to migrate to 802.11ac.

For computers, in addition to the WCN3680, solutions are designed to support two (QCA9862) and three (QCA9860) transmission streams, which allows you to get speeds up to 1,3 Gb / s. They will find application in tablets and laptops.

The QCA9860 and QCA9862 also target consumer electronics applications, including TVs and game consoles. They comply with 802.11ac/a/b/g/n and Bluetooth 4.0/LE specifications. Both autonomous operation and work in tandem with Qualcomm processors and other processors are provided. Models QCA9880 3x3 and QCA9882 2x2 are designed for use in home network equipment, and corporate equipment is supposed to be built on models QCA9890 3x3 and QCA9892 2x2.

Qualcomm Atheros promises to start deliveries of trial samples of all listed chips in the second quarter of 2012.

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