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LCD TVs with the ability to record to external network drives

28.11.2004

Toshiba has planned to release 32" and 37" LCD TVs that will support a host of features that are still more typical of a computer.

For example, for the first time it will be possible to record programs (and, accordingly, subsequent playback) on an external hard drive connected to a home network. In addition, recording is also provided on SD memory cards in MPEG-4 format, the ability to interact with digital cameras and surfing websites, which can be organized in a separate window without interrupting TV viewing. You can connect a keyboard to the USB port.

The implementation of all these and many other features is not surprising, given the use of an embedded Linux variant. Naturally, there is also a processor, which is only known to be 64-bit. Toshiba called its intelligent control system for the many functions of the TV "meta brain". As for "direct duties", it goes without saying for Japan that high-definition television (HDTV) is supported.

Four models will be offered to the market - two "basic" from the LZ100 series and two from the LZ150 series, with advanced networking capabilities. All of them should appear in early November.

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Efficient molecular diodes 06.07.2017

An international team of scientists from the United States, Ireland and Singapore, led by Professor Christian A. Nijhuis of the National University of Singapore, has for the first time been able to create efficient molecular rectifier diodes.

Diodes are electronic elements that have different conductivity depending on the direction in which current flows through them. Rectifier diodes convert AC to DC; their main characteristic is the rectification factor K, equal to the ratio of the values of the alternating voltage at the input and the rectified voltage at the output.

For modern industrial silicon rectifier diodes, K values vary from 105 to 108. However, for molecular diodes - molecular-scale elements that could theoretically be used to create superminiature electronic devices - this figure has so far been, at best, 103, which is clearly not enough.

Now Nijuys and his colleagues have succeeded in creating a molecular diode with a rectification factor of 6.3x105. These are macroscale tunnel transitions based on a single layer of molecular diodes. The number of molecules conducting current in these junctions varies with bias polarity, thereby multiplying the internal rectification factor of an individual molecule by three orders of magnitude.

"This exceeds the theoretical limit," commented Professor Enrique del Barco of the University of Central Florida, one of the paper's co-authors. "Now we have a molecular diode comparable in performance to silicon. What was a theoretical scientific model is moving into the plane of commercial possibilities.

However, for now, molecular diodes, apparently, will not replace completely electronic ones - but they may be able to replace them in some areas. One of their advantages is low cost and ease of production, because molecular diodes can be synthesized directly in the laboratory.

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