The continuing progress in miniaturization of silicon microelectronic and photonic devices is causing cooling of the device structures to become increasingly challenging. Conventional heat transport in bulk materials is dominated by acoustic phonons, which are quasiparticles that represent the material’s lattice vibrations, similar to the way that photons represent light waves. Unfortunately, this type of cooling is reaching its limits in these tiny structures.
However, surface effects become dominant as the materials in nanostructured devices become thinner, which means that surface waves may provide the thermal transport solution required. Surface phonon-polaritons (SPhPs) — hybrid waves composed of surface electromagnetic waves and optical phonons that propagate along the surfaces of dielectric membranes — have shown particular promise, and a team led by researchers from the Institute of Industrial Science, the University of Tokyo has now demonstrated and verified the thermal conductivity enhancements provided by these waves.
Just when you think the entry-level smartphone market can’t get any more saturated, another company comes in and introduces a new device that will fight for its spot under the sun. The latest addition to the ultra-affordable scene is the Coolpad Cool 12A which has some intriguing specs for its price range.
The new phone has a 4,000 mAh battery and a USB-C port, two cameras, and an attractive price tag of CNY599 which translates to just south of $90/€75.
Coolpad Cool 12A
Coolpad does not reveal the chipset inside the Cool 12A but after some detective work we established it is the T310 platform by the Shanghai-based company Unisoc. It comes with a quad-core CPU – one Cortex-A75 unit at 2.0 GHz, and three Cortex-A55 cores at 1.8 GHz. It has its own AI camera algorithms and some features to offer a longer battery life, but
Through tonight: Breezy conditions will persist through sunset, but winds are slowly diminishing. They will calm more substantially later on. The cool and clear conditions of this evening will stick around much of the night. We should see winds die off with the sunset, which will help temperatures falling to the 50s feel generally comfortable. Lows will range from near 50 to the upper 50s.
Tomorrow (Thursday): It will be another good-looking day. Sunshine will be plentiful through midday before clouds build during the afternoon. Any rain chances should hold off until after dark. Highs will be in the low and mid-70s. Winds will be from the southwest, around 5 to 10 mph.
Pollen update: Mold spores are high. Tree, grass and weed pollen is low.
Rain: Precipitation totals were mostly on the light side of the forecast around here last night. As suggested by some of the high-resolution models
His full name isn’t as well known as Thomas Edison or Alexander Graham Bell’s, but if you spend any amount of time outdoors, there’s a good chance you’ll find at least part of Robert W. Gore’s name on your gear. He’s the inventor of Gore-Tex, and at the age of 83, the celebrated inventor, engineer, and chemist passed away late last week.
Born in Salt Lake City, Utah, in 1937, Bob Gore seemed predestined to spend his life and career in the sciences as in 1950 his father moved their family to Newark, Delaware, to be closer to his work at DuPont’s largest research and development facility in Wilmington, Delaware. In 1959 Gore graduated from the University fo Delaware in 1959 with a bachelor’s degree in chemical engineering, and later earned his Master of Science and then a Ph.D. in chemical engineering from the University of Minnesota in 1963.
As announced last week, Sony’s new flagship smartphone, the Xperia 5 II, is now officially out.
As is typical of Sony’s smartphones, the Xperia 5 II has a strong photography emphasis, with a triple rear camera with three focal lengths: 16/24/70 millimeters. Sony obviously doesn’t think megapixels are very important so it never mentions them, instead focusing on what these cameras can do. That includes very fast shooting at 20fps for those sports shots, zooming in, and portrait shots, as well as 4K HDR 120fps slow-motion video and 21:9 video shooting at up to 60fps.
Design-wise, the Xperia 5 II is a fairly interesting phone because it’s not huge like most Android phones these days. It has a 21:9, 6.1-inch display, making it significantly smaller than the massive Xperia 1 II. Oh, and it’s an OLED with a 120Hz refresh rate, making