Based on this previous knowledge, the team at the LLNL explored properties of synthetically made diamonds that are of higher quality than naturally occurring ones.
“We said to ourselves ‘let’s take this pure high-quality CVD diamond and irradiate it to see if we can tailor the carrier lifetime,’” Paulius Grivickas, lead author of a paper, said in a media statement.
Grivickas explained that in photoconductive devices, the best combination of conductivity and frequency response is achieved by introducing impurities, which control carrier recombination lifetimes. In diamonds, a cheap and easy alternative to this approach is electron irradiation where recombination defects are created by knocking the lattice atoms out of place.
“Eventually, we nailed down the understanding of which irradiation defect is responsible for carrier lifetimes and how does the defect behave under annealing at technologically relevant temperatures,” the researcher said.
Photoconductive diamond switches produced this way can be used, for example, in the power grid to control current and voltage surges, which can fry out equipment. “Current silicon switches are big and bulky, but the diamond-based ones can accomplish the same thing with a device that could fit on the tip of a finger,” Grivickas said.
The scientist pointed out that his findings also have applications in energy delivery systems where there is a possibility of a megawatt-class radio frequency power generation, which requires optimization of diamonds’ high-frequency response.
MediaTek taps TSMC 6-nanometer tech for new flagship 5G phone chips – Cape Breton Post
By Stephen Nellis
(Reuters) – MediaTek Inc on Wednesday said it would use Taiwan Semiconductor Manufacturing Co’s 6-nanometer chipmaking technology for its newest chips aimed at premium 5G smartphones.
Taiwan’s MediaTek appears to be one of the first high-volume customers for the technology and is among a handful of companies with modem technology to connect phones to mobile data networks, competing against Qualcomm Inc and Samsung Electronics Co Ltd. The new chips announced Wednesday, called Dimensity 1100 and 1200, build on MediaTek’s efforts to go after higher-priced handsets where Qualcomm’s Snapdragon chips have historically had stronger market share.
Like Qualcomm and Apple, MediaTek designs chips and then contracts out production to outside firms. The newest chips will be made at TSMC, on a chipmaking technology called 6-nanometer. Qualcomm’s chips are being made by Samsung on 5-nanometer technology while Apple Inc uses TSMC’s 5-nanometer technology.
Smaller chipmaker technology is faster and more power efficient. MediaTek’s previous chips used a 7-nanometer process, and moving to newer manufacturing technology along with advances in the chip’s design make it 22% faster at computing tasks while consuming 25% less power, Finbarr Moynihan, general manager of international corporate sales, told Reuters in an interview.
(Reporting by Stephen Nellis in San Francisco; Editing by Leslie Adler)
Xiaomi Mi 11 Pro flagship smartphone to come with 120x zoom support – gizmochina
After announcing its latest Mi 11 flagship smartphone a few weeks ago, Xiaomi started selling the device earlier this month. Now, the Chinese company is gearing up to launch a new variant in the lineup, dubbed Mi 11 Pro.
Now, the latest report coming from popular leaker ‘Digital Chat Station’ reveals that the upcoming Mi 11 Pro will have support for 120x zoom through its rear-facing camera setup. This seems to be pretty much in line with what has been rumored so far.
Instead of the triple-camera setup on the Mi 11, the Pro variant will come with a quad-camera configuration on the back panel. Also, the company seems to have ditched the design of the vertically-aligned sensor found on Mi 10 Pro to a 2×2 grid design.
As for the other specifications, reports indicate that the Mi 11 Pro smartphone will have the same display as the Mi 11. It will feature a 6.81-inch 2K curved display offering a 120Hz refresh rate, 515PPI pixel density, and a peak brightness of 1500nits. Additionally, the device is also expected to have support for MEMC and SDR to HDR conversion.
Given that it’s a flagship offering from Xiaomi and Qualcomm Snapdragon 888 is the most advanced chipset out there in the market, the device will be powered by the Snapdragon 888 chipset, the same as the Mi 11. We also expected to see multiple versions of the phone based on the memory configuration.
In the software department, the phone is likely to be running the latest Android 11 operating system along with the company’s own MIUI custom user interface on top. More information about the device is expected to surface online ahead of its official launch, which will take place after the Spring Festival in China, after mid-February.
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