Thermo-regulating fabric using electrocaloric effect. Free Technical Library News

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Thermo-regulating fabric using electrocaloric effect

02.01.2024

A team of scientists from Nankai University in China reports the creation of a unique material with a two-way thermoregulation system. Clothing made from this innovative substance can effectively retain heat in the cold season and cool in hot weather, powered by solar energy.

The developed thermoregulating fabric, based on the electrocaloric effect and solar panels, represents an innovative approach to creating clothing that can adapt to different environmental conditions. This discovery could be an important step in the development of sustainable and energy-efficient technologies in the textile industry.

The operating principle of metatissue is based on the electrocaloric effect. In this material, the atoms are electrically polarized, creating a slight imbalance in the distribution of electrons. This leads to the appearance of a “plus” and “minus” pole for the particles. When an electric field is turned on, the atoms begin to vibrate faster in accordance with the laws of entropy, which leads to an increase in temperature. When the electric field is turned off, the opposite effect occurs: entropy leaves the atomic lattice, taking heat with it.

Built-in solar panels interact with sunlight, converting it into a source of energy for the fabric. Experiments have shown that such clothing is able to maintain skin temperature between 32 and 36 °C, even when the ambient temperature varies from 12,5 to 37,6 °C.

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Samsung Smartphone for Visually Impaired People 22.03.2014

Samsung Electronics has handed over a certificate for 100 Samsung Galaxy Core Advance smartphones to the All-Russian Public Organization of the Disabled "All-Russian Order of the Red Banner of Labor Society of the Blind" (VOS).

The Samsung Galaxy Core Advance is packed with unique features and accessories for visually impaired consumers and the elderly. With a large and bright 4,7-inch screen, additional physical buttons and a non-slip back panel, this smartphone ensures comfortable operation. Special mention deserves a special mode that simplifies the work with a smartphone thanks to large icons and easy-to-read labels. It is indispensable for visually impaired users and will allow them to easily make calls, type messages and enjoy all the benefits of modern technology. In addition, the novelty uses physical buttons instead of traditional touch buttons for modern smartphones, which have a clearly defined tactile feedback when pressed. Physical buttons are provided for the most frequently used functions: voice recorder, camera, volume control, smartphone menu, power on.

Additional features developed by Samsung specifically for people with disabilities include optical scanning for automatic text recognition from an image and subsequent voice playback, the Light Sensing application that allows you to determine the direction of light sources and their brightness with sound indication, Instant Voice recorder Recorder for quick creation of voice notes and, of course, a special mode of operation of the smartphone interface, in which menu navigation and all user actions are confirmed by voice feedback.

Also worth noting is the conversion of text into a TTS (Text-to-Speech) voice message and the Voice Guided Camera function for conveniently determining the number of people and their location when taking pictures. The Samsung Galaxy Core Advance is equipped with a number of branded Galaxy features, including S Voice, S Translator, Sound & Shot, Group Play and Easy Mode. Among the advantages of the novelty are modern wireless interfaces, including Bluetooth 4.0 and Wi-Fi, support for positioning with GPS and GLONASS systems, as well as NFC and S Beam support for quick download of video, audio or contact data from other smartphones with a single keystroke.

Equally interesting are the accessories designed specifically for the Samsung Galaxy Core Advance. These include NFC voice tags that allow you to conveniently mark any objects, a special tripod stand that makes it easier to scan and recognize printed text, magazines and books, as well as a case with an ultrasonic rangefinder, with which the smartphone turns into a real guide signaling by vibration about the presence of obstacles in the way of the owner of the smartphone and the distance to them.

The Samsung Galaxy Core Advance went on sale in navy blue and pearl white in early 2014.

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