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ScienceDaily: Computers & Math News |
| Toward more energy efficient power converters Posted: 12 Oct 2021 08:23 AM PDT Researchers extend the mathematical approach called automatic differentiation from machine learning to the fitting of model parameters that describe the behavior of field-effect transistors. This allowed the parameters to be extracted up to 3.5 times faster compared with previous methods, which may lead to more sustainable microelectronics. |
| Enhancing piezoelectric properties under pressure Posted: 12 Oct 2021 06:50 AM PDT Stress enhances the properties of a promising material for future technologies, with researchers' discovery of a new exotic state of a promising, room-temperature multiferroic material having exciting implications for future technologies using these enhanced properties. |
| Contributing to solve the heat concentration problem in power semiconductors Posted: 12 Oct 2021 06:50 AM PDT Towards solving the heat concentration problem in power semiconductors, researchers have developed a highly efficient boiling immersion cooler using lotus metals. LTS succeeded in increasing the cooling performance from about 200 W/cm2 of the conventional cooler to 530 W/cm2 or more by using the boiling promotion technology using lotus metals. This technology is also considered as a highly efficient cooling technology for CPUs for conventional workstations and large-scale servers. |
| New nanostructure could be the key to quantum electronics Posted: 12 Oct 2021 06:50 AM PDT A novel electronic component could be an important key to the era of quantum information technology: Using a tailored manufacturing process, pure germanium is bonded with aluminum in a way that atomically sharp interfaces are created. |
| Ultrafast and coupled: Atomic vibrations in the quantum material boron nitride Posted: 12 Oct 2021 06:50 AM PDT Materials consisting of a few atomic layers display properties determined by quantum physics. In a stack of such layers, vibrations of the atoms can be triggered by infrared light. New experimental and theoretical work shows that atomic vibrations within the layers of hexagonal boron nitride, the so-called transverse optical phonons, couple directly to motions of the layers against each other. For a period of some 20 ps, the coupling results in a frequency down-shift of the optical phonons and their optical resonance. This behavior is a genuine property of the quantum material and of interest for applications in high-frequency optoelectronics. |
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