The world's thinnest flexible OLED comes out
The joint research team at the University of Tokyo in Japan and John Kepler University in Austria recently announced that they have developed the world's thinnest and lightest organic light-emitting diode (O LED ), which can be bent at will and is only 2 microns thick. According to a website such as the Japan News Agency, the research team successfully produced an organic light-emitting diode with a total thickness of 2 μm and a weight of only 3 g per square meter on an ultra-thin PET plastic film with a thickness of only 1.4 μm. It has good flexibility and does not affect its energization performance. The research team has also successfully developed ultra-thin organic solar cells and organic transistor integrated electronic circuits composed of carbon molecular materials using ultra-thin polymer films. The new technology invention can integrate components such as organic light-emitting diodes, organic solar cells and organic transistors on the same polymer film, which is lighter and thinner than the previous similar electronic devices. Organic light-emitting diodes and organic solar cells are key projects in the field of material research and development in recent years, and have entered a practical stage. The organic light-emitting diode display device has the advantages of power saving, color reproduction, and fast response speed, and is regarded as a next-generation display material, and the demand for its weight reduction and ultra-thinness has been driving the related technological progress. Related research papers were published in the journal Nature Photonics on the 28th.
A DC motor is any of a class of rotary electrical machines that converts direct current electrical energy into mechanical energy. The most common types rely on the forces produced by magnetic fields. Nearly all types of DC motors have some internal mechanism, either electromechanical or electronic, to periodically change the direction of current flow in part of the motor.
DC motors were the first form of motor widely used, as they could be powered from existing direct-current lighting power distribution systems. A DC motor's speed can be controlled over a wide range, using either a variable supply voltage or by changing the strength of current in its field windings. Small DC motors are used in tools, toys, and appliances. The universal motor can operate on direct current but is a lightweight brushed motor used for portable power tools and appliances. Larger DC motors are currently used in propulsion of electric vehicles, elevator and hoists, and in drives for steel rolling mills. The advent of power electronics has made replacement of DC motors with AC motors possible in many applications.
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