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Today's Topics:
1. The Internet Archive's fight to save itself (Antony Barry)
2. New Chinese Silicon Photonics (Stephen Loosley)
3. Terahertz (THz) wireless communication technology
(Stephen Loosley)
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Message: 1
Date: Sun, 6 Oct 2024 05:34:43 +0000
From: Antony Barry <[email protected]>
To: Link list <[email protected]>
Subject: [LINK] The Internet Archive's fight to save itself
Message-ID:
<caecotwy3qn8x+ltwm+cfbf648xpg3yoseumvrmfenvdpfvv...@mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"
https://www.wired.com/story/internet-archive-memory-wayback-machine-lawsuits/
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Message: 2
Date: Sun, 06 Oct 2024 16:42:36 +1030
From: Stephen Loosley <[email protected]>
To: "link" <[email protected]>
Subject: [LINK] New Chinese Silicon Photonics
Message-ID: <[email protected]>
Content-Type: text/plain; charset="UTF-8"
China claims breakthrough in silicon photonics that could clear technical hurdle
A Wuhan-based lab has announced a milestone that could help China overcome
restraints imposed by traditional chip-design technology
By Xinmei Shen 6 Oct 2024
https://www.scmp.com/tech/tech-war/article/3281156/chip-war-china-claims-breakthrough-silicon-photonics-could-clear-technical-hurdle
[Photo caption: A state-fund ed lab in China has announced a breakthrough in
chip-design technology. Photo: Shutterstock]
A state-funded semiconductor lab in China said it has achieved a milestone in
the development of silicon photonics, which could help the country overcome
current technical barriers in chip design and achieve self-sufficiency amid US
sanctions.
JFS Laboratory, based in Wuhan, capital of central Hubei province and a
national base for photonics research was able to light up a laser light source
integrated with a silicon-based chip.
This is the first time that this has been successfully done in China, according
to a blog post published by the lab last week.
The achievement means that China has filled one of the few blanks in its
optoelectronics technology, state media Peoples Daily reported on Friday.
Silicon photonics rely on optical signals instead of electric signals for
transmission. It aims to address the restraints imposed by current technology,
as the transmission of electric signals between chips is approaching its
physical limit, the lab said.
Established in 2021 with 8.2 billion yuan (US$1.2 billion) in government
funding, JFS is one of Chinas key institutions tasked with pursuing
technological breakthroughs.
Major players in the global semiconductor industry have devoted resources into
advancing silicon photonics, which is believed to hold the future to making
better chips for data and graphics processing, as well as artificial
intelligence (AI).
Still, businesses have faced challenges in translating scientific breakthroughs
into commercial products.
Taiwan Semiconductor Manufacturing Company, a world top contract-chip maker, is
one of the companies working on the technology. Its vice-president, Douglas Yu
Chen-hua, last year said that a good silicon photonics integration system could
address critical issues in energy efficiency and computing power in the AI era.
That development would bring about a paradigm shift in the industry, he said.
US chip design giants Nvidia and Intel, as well as Chinas Huawei Technologies,
are also eyeing advances in silicon photonics. The global market for silicon
photonics chips is expected to reach US$7.86 billion by 2030, up from US$1.26
billion in 2022, according to estimates by SEMI, an international semiconductor
industry association.
[Photo caption: Companies such as Taiwan Semiconductor Manufacturing Company
see silicon photonics as the future of chip design. Photo: Reuters]
Silicon photonics may present an even bigger opportunity in China, where US
export controls on advanced chip-making technologies have hindered the
development of traditional semiconductors.
Silicon photonics chips can be produced domestically using relatively mature
raw materials and equipment without relying on high-end extreme ultraviolet
(EUV) lithography machines, unlike electrical chips, Sui Jun, president of
Beijing-based semiconductor start-up Sintone, was quoted as saying by local
media in 2022.
EUV machines, required for making advanced chips, are considered the Achilles
heel of the Chinese semiconductor industry, as domestic firms struggle to
mass-produce such tools. Netherlands-based ASML, which holds a virtual monopoly
on EUV machines, stopped exporting the equipment to China in 2019.
Silicon photonics could become an emerging front in US-China tech competition,
according to a report published by US think tank Centre for Strategic and
International Studies (CSIS) in January.
"While the US-led export controls are likely setting back Chinese capabilities
in the manufacture of traditional chips ? [they] could also inadvertently
incentivise China to devote more resources to emerging technologies that will
play an important role in next-generation semiconductors,? Matthew Reynolds, a
former economics programme fellow at the CSIS, wrote in the report.
Xinmei Shen joined the Post in 2017 and is a technology reporter. She covers
content, entertainment, social media and internet culture. Previously, she was
with the Post?s tech news site, Abacus. Before that, she was a reporting intern
at The Information whilst studying at the Univ
--
------------------------------
Message: 3
Date: Sun, 06 Oct 2024 17:37:05 +1030
From: Stephen Loosley <[email protected]>
To: "link" <[email protected]>
Subject: [LINK] Terahertz (THz) wireless communication technology
Message-ID: <[email protected]>
Content-Type: text/plain; charset="UTF-8"
World first for Chinese scientists in terahertz wireless communication
technology
A breakthrough in fast, long-distance data transmission is good news for future
communication in space, researchers say
By Holly Chik 4 Oct 2024
https://www.scmp.com/news/china/science/article/3281087/world-first-chinese-scientists-terahertz-wireless-communication-technology
Faster long-distance data transmission is a step closer, according to a team of
Chinese scientists who say they have transmitted high-definition video signals
over more than a kilometre using terahertz wireless communication technology.
The experiment, led by Purple Mountain Observatory of the Chinese Academy of
Sciences (CAS), was the worlds first successful application of high-sensitivity
superconducting receiver technology in long-distance terahertz wireless
communication systems, according to the observatory.
Terahertz (THz) radiation is an electromagnetic wave that lies between the
microwave and infrared frequency bands, a relatively unoccupied part of the
electromagnetic spectrum. Terahertz technology is known for being a powerful
imaging tool for security screening and medical diagnostics. (snip)
--
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End of Link Digest, Vol 383, Issue 8
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