News on China's scientific and technological development.

GulfLander

Captain
Registered Member
"Smart prosthetic arms, developed by BrainCo, one of the six trailblazing tech companies in east China's Hangzhou, have entered mass production, with prices down to 1/7 of their international counterparts.

A non-invasive brain-computer interface technology collects EMG and nerve electrical signals to control the prosthetic arms. The next-generation models currently in testing are equipped with more sensors, enabling users to feel warmth."
 

Legume7

New Member
Registered Member
Chinese female mathematician Hong Wang (born 1991) has proven the Kakeya set conjecture. She is now a heavy favorite to win the Fields Medal (the Nobel Prize of mathematics) next year, which would make her the first Chinese winner (Shing-Tung Yau was stateless when he won). For reference, there has been no American-born winner this century.

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SanWenYu

Captain
Registered Member
Chinese scientists created super fast super sensitive solar-blind photodetectors with gallium oxide.

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记者2月27日从兰州大学获悉,该校物理科学与技术学院联合中科大组成的研究团队在宽禁带半导体光电探测领域取得重要进展,成功开发出一种同时具备超快、超灵敏响应的氧化镓(Ga₂O₃)日盲光电探测器,有效破解了长期困扰该领域的响应度和速度两难的困境(Responsivity&Speed dilemma,即RS困境)。相关成果发表在《先进材料》上。

日盲光电探测器在火焰预警、安全通信、快速目标成像和环境监测等关键领域发挥着重要作用。Ga2O3作为一种超宽禁带材料,因其优异的耐高温、抗辐照特性,被视为下一代高性能日盲光电探测器的理想候选材料。

然而,Ga2O3光电探测器普遍面临着“RS困境”。“在传统工艺下,其器件的响应度与速度难以同步提升,如何突破这一难题成为技术攻关的关键。”团队主要成员、兰州大学物理科学与技术学院青年研究员张泽民说。

针对这一难题,研究团队创新性地提出了一种热脉冲(TPT)技术,通过精准、快速调控Ga₂O₃薄膜中的温度分布,成功形成了垂直分层的晶体结构和氧空位分布,有效优化了载流子的生成与传输路径,表面富氧空位层提升载流子生成,底层致密区加速传输。

基于该技术,研究团队成功制备了高性能Ga2O3日盲光电探测器芯片,并在日盲成像、光轨迹跟踪和日盲功率计等应用中表现出色。

此外,团队基于该光探测器,开发出一种便携式日盲紫外探测设备,在高压电弧放电检测中表现出优异的日盲识别能力,为未来高灵敏深紫外探测应用提供了新的技术支撑。

“未来,该研究成果有望推动高性能紫外光探测技术在深空探测、高精度火焰监测、先进光通信系统等领域的应用,为新一代高效光电探测技术的发展奠定坚实基础。”张泽民表示。

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GulfLander

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Registered Member
"The Synergetic Extreme Condition User Facility (SECUF), a Chinese "super lab," has passed a national acceptance review, marking its readiness for advanced materials science research.

SECUF uniquely combines extreme conditions such as ultra-low temperatures, ultra-high pressure, strong magnetic fields and ultra-fast optical fields into one facility.

Open to the global scientific community, SECUF has already hosted experiments from 13 universities and research institutions across 10 countries, including Denmark, Germany, France and Japan, leading to new scientific findings."

 

supercat

Major
According to SCMP, China has a lot of thorium.
  • Thorium is a silver-colored metal that can generate 200 times more energy than uranium. Unlike uranium-based reactors, thorium molten-salt reactors (TMSRs) are compact, do not require water cooling, cannot experience a meltdown, and produce very little long-lived radioactive waste.
  • Just five years’ worth of mining waste from an iron ore site in Inner Mongolia contains enough thorium to supply U.S. household energy demands for over 1,000 years.
  • The Bayan Obo mining complex alone could yield around 1 million tonnes of thorium—potentially enough to power China for 60,000 years.
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Samsung will use YMTC's NAND flash technology.
Samsung Electronics is set to use bonding technology from China’s YMTC for the production of 400-layer NAND flash memory, according to Korea’s ChosunBiz news site.
A contract was signed between the two companies on Monday 24 February, ChosunBiz reports referencing unnamed industry sources. The account added that hybrid bonding is now expected to be essential to get to and beyond 400 layers in 3D NAND flash. This shows how rapid the progress China has made in memory making technology.
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