Amplitude modulator using erbium doped polycrystalline CdS thin films
Demands on digital communications are increasing at an exponential rate. The need for innovative advances in this area means research on optical and electrical properties of CdS thin films are of interest. It is already known that CdS thin films show promise in conversion of energy applications such as for photovoltaic devices and sensors but they may also be suited for other applications. These applications include the use of CdS films for building analog multipliers or amplitude modulators.
The principal purpose of every amplitude, frequency or phase modulator for analog or digital communication systems is to incorporate information to be transmitted (modulating signal) into a carrier signal.
Dr. Ian Birkby | EurekAlert!
The plastic brain: Better connectivity of brain regions with training
02.07.2018 | Leibniz-Institut für Wissensmedien
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04.05.2018 | Leibniz-Institut für Wissensmedien
There are currently great hopes for solid-state batteries. They contain no liquid parts that could leak or catch fire. For this reason, they do not require cooling and are considered to be much safer, more reliable, and longer lasting than traditional lithium-ion batteries. Jülich scientists have now introduced a new concept that allows currents up to ten times greater during charging and discharging than previously described in the literature. The improvement was achieved by a “clever” choice of materials with a focus on consistently good compatibility. All components were made from phosphate compounds, which are well matched both chemically and mechanically.
The low current is considered one of the biggest hurdles in the development of solid-state batteries. It is the reason why the batteries take a relatively long...
New design tool automatically creates nanostructure 3D-print templates for user-given colors
Scientists present work at prestigious SIGGRAPH conference
Most of the objects we see are colored by pigments, but using pigments has disadvantages: such colors can fade, industrial pigments are often toxic, and...
Scientists at the University of California, Los Angeles present new research on a curious cosmic phenomenon known as "whistlers" -- very low frequency packets...
Scientists develop first tool to use machine learning methods to compute flow around interactively designable 3D objects. Tool will be presented at this year’s prestigious SIGGRAPH conference.
When engineers or designers want to test the aerodynamic properties of the newly designed shape of a car, airplane, or other object, they would normally model...
Researchers from TU Graz and their industry partners have unveiled a world first: the prototype of a robot-controlled, high-speed combined charging system (CCS) for electric vehicles that enables series charging of cars in various parking positions.
Global demand for electric vehicles is forecast to rise sharply: by 2025, the number of new vehicle registrations is expected to reach 25 million per year....
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