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Today's Topics:
1. China solves GaN chip defect puzzle, boosting edge in US tech
war (Stephen Loosley)
2. Re: OpenAI?s ChatGPT now reaching 400 million weekly users
(Marghanita da Cruz)
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Message: 1
Date: Mon, 24 Feb 2025 23:34:01 +1030
From: Stephen Loosley <[email protected]>
To: "link" <[email protected]>
Subject: [LINK] China solves GaN chip defect puzzle, boosting edge in
US tech war
Message-ID: <[email protected]>
Content-Type: text/plain; charset="UTF-8"
China solves GaN chip defect puzzle, boosting edge in US tech war
Minimising semiconductor flaws will expand China?s price gap with US for
advanced chips used in electronic warfare, aerospace
[Photo caption: Tech researchers have refined GaN crystal growth processes to
minimise defects during semiconductor fabrication, resulting in both cost
reductions and enhanced performance. Photo: Getty Images}
By Zhang Tongin Beijing Published: 8:00pm, 21 Feb 2025 https://sc.mp/kax26
https://www.scmp.com/news/china/science/article/3299457/china-solves-gan-chip-defect-puzzle-boosting-edge-us-tech-war
Researchers in China say they have pinpointed the main cause of defects in a
semiconductor material considered key to boosting the performance of advanced
chips used in electronic warfare and other critical sectors that are at the
centre of China?s tech rivalry with the United States.
Gallium nitride (GaN), a third-generation semiconductor material, is widely
used in devices such as chargers, 5G base stations, radar systems, military
communications, and aerospace applications.
China produces 98 per cent of the world?s gallium, and Beijing recently banned
exports of the material to the US, making it more difficult ? and costly ? for
the Pentagon to acquire GaN-based chips.
The stakes are high: if China can develop low-cost, high-performance GaN
manufacturing techniques, it could expand the existing price gap in
semiconductor products between the two nations.
[Chinese-made gallium-nitride-on-silicon (GaN-on-Si) power chips. Photo:
Innoscience]
GaN fabrication typically uses substrates like silicon and sapphire to support
growth. But the process can create misalignments in the crystal structures ?
referred to as dislocation defects ? which lead to local leakage. Such flaws
can significantly reduce the performance of GaN-based materials, and therefore,
devices.
---
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Message: 2
Date: Tue, 25 Feb 2025 09:52:41 +1100
From: Marghanita da Cruz <[email protected]>
To: [email protected]
Subject: Re: [LINK] OpenAI?s ChatGPT now reaching 400 million weekly
users
Message-ID: <[email protected]>
Content-Type: text/plain; charset=UTF-8; format=flowed
The onus is on all of us to make sure these AI systems are not an echo
chambers.
We should ask the questions we can verify the answers.
I wonder how well AI does at solving the Building Waste, Plastic, Food
waste, Food Scaps and Diminishing Resources problems or Climate Chaange.
Avoid Reuse then Recycle and never throw away to end up in an
incinerator or Landfill.
Marghanita
On 24/2/25 14:12, Antony Barry wrote:
> OpenAI?s ChatGPT tool now has 400 million weekly active users, marking an
> increase of 100 million since December, the Microsoft-backed company revealed
> on Thursday
> <https://click.digitaltrends.com/ga/click/2-1980929-11-1062-2633-0-6d2cc5821f-fu960e88fd?l=1-c93dc9ee70-https%3A%2F%2Fx%2Ecom%2Fbradlightcap%2Fstatus%2F1892579908179882057%3Flctg%3D1980929>.
> It also has around 2 million business users engaging with the technology
> for work, double that of five months ago. The rapid growth comes amid
> increased competition from Google?s Gemini, xAI?s Grok, and China?s
> DeepSeek, among others ...
>
>
> https://www.eweek.com/news/chatgpt-hits-400m-weekly-active-users/?lctg=1980929&utm_source=digitaltrends&utm_medium=email&utm_content=subscriber_id:1980929&utm_campaign=DTDaily20250221
>
>
>
>
>
--
Marghanita da Cruz
Telephone: 0414-869202
Email: [email protected]
Website: http://ramin.com.au
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