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PhysOrg.com 08/01/2020 03:22
Semiconductors are important materials in numerous functional applications such as digital and analog electronics, solar cells, LEDs, and lasers. Semiconducting alloys are particularly useful for these applications since their properties can be engineered by tuning the mixing ratio or the alloy ingredients. However, the synthesis of multicomponent semiconductor alloys has been a big challenge due to thermodynamic phase segregation of the alloy into separate phases. Recently, University of Michigan researchers Emmanouil (Manos) Kioupakis and Pierre F. P. Poudeu, both in the Materials Science and Engineering Department, utilized entropy to stabilize a new class of semiconducting materials, based on GeSnPbSSeTe high-entropy chalcogenide alloys.
PhysOrg.com 07/31/2020 16:23
According to recent Gallup polls, socialism is now more popular than capitalism among Democrats and young people, and support for "some form of socialism" among all Americans is at 43% (compared to 25% in 1942). Policies that went unmentioned or were declared out-of-bounds in elections four years ago—a federal jobs guarantee, single-payer health care, free college, massive tax hikes on the rich, and the Green New Deal—are commonplace in Democrats' 2020 campaigns.
PhysOrg.com 07/31/2020 11:00
Sea surface temperatures in the tropics have a major influence on the climate in the tropics and the adjacent continents. For example, they determine the position of the Intertropical Convergence Zone and the beginning and strength of the West African monsoon. Therefore, it is important to understand the variability of sea surface temperatures for climate predictions. Until now, the seasonal cycle of sea surface temperature in the tropical North Atlantic could not be sufficiently explained. "More precisely, the sea surface is colder than predicted by the combination of previous direct observations of solar radiation, currents and mixing, especially in the summer months from July to September," explains Dr. Rebecca Hummels from the GEOMAR He.
PhysOrg.com 07/31/2020 11:00
Researchers at the University of the Witwatersrand in Johannesburg, South Africa, have demonstrated a record setting quantum protocol for sharing a secret amongst many parties. The team created an 11-dimensional quantum state and used it to share a secret amongst 10 parties. By using quantum tricks, the secret can only be unlocked if the parties trust one another. The work sets a new record for the dimension of the state (which impacts on how big the secret can be) and the number of parties with whom it is shared, and is an important step towards distributing information securely across many nodes in a quantum network.
PhysOrg.com 07/31/2020 10:59
Many factors must be kept in mind when designing a hospital, a factory, a shopping center or any industrial plant, and many questions can arise before deciding on the floor plans. What is the best placement for each different space? What distribution is the most appropriate in order to improve efficiency in these large areas? University of Cordoba researchers Laura García and Lorenzo Salas are trying to provide an answer to these questions, and to do so, they have turned to the marine world to simulate the behavior of coral reefs.

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