News on China's scientific and technological development.

Jiang ZeminFanboy said:

But I think without Facebook, messenger and Instagram, and Google maps people won't buy Huawei phones in the west. So I guess it's impossible for harmonyOs to go to the West. I will buy anyway new Huawei phone, cause I left google ecosystem apps and don't need 5g. But I don't understand why 5g is not working in international version when in China it's working.

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5g bands in China are different frequencies and often have different modes, you have to check the specific band and modes. Huawei might also not have the license, or just didn't want to pay for the license or just design/support a particular set of 5g bands, especially on a product which they didn't plan to sell much globally.

Robotic fish driven by bionic muscle can self-adapt four "swimming modes" optimized for different scenarios.

Soft Robotic Fish Actuated by Bionic Muscle With Embedded Sensing for Self-Adaptive Multiple Modes Swimming​

Fish can adaptively adjust their body kinematics and swimming modes by sensing to realize optimal propulsion. However, most soft robotic fish have an unchangeable swimming mode through simple structure design, making them difficult to adapt to dynamic and complex fluid environments. Here, inspired by the multiple muscle synergy and lateral line sensing function of fish, we developed a soft robotic fish with multiple actuating units and embedded sensing elements. By collaboratively controlling the amplitude and phase of excitation from the multiple flexible actuating units, the soft robotic fish can successfully realize various swimming modes very similar to those of natural fish. Additionally, the embedded flexible sensing elements enable the robotic fish to sense the swimming state and the surrounding fluid environment in real time. The multiple actuation and embedded sensing allow the soft robotic fish to adaptively switch to an optimal swimming mode in a certain fluid environment. The multimode swimming and perception capabilities proposed in this work not only make soft robotic fish more intelligent and adaptable to complex fluid environments, but also contribute to the future implementation of autonomous control capabilities for robotic fish.


近日，中国科学院沈阳自动化研究所机器人学研究室微纳米课题组设计开发了一款基于仿生肌肉驱动与嵌入式柔性感知的软体机器鱼，相关成果发表于机器人领域Top期刊IEEE Transactions on Robotics（T-RO）。

　　作为自然界进化了亿万年的产物，鱼类的高效游动行为主要和高灵敏度的侧线感知系统以及高度发达可控的肌肉驱动系统密切相关。

　　相关研究表明，鱼体两侧的肌肉主要分为白肌和红肌，其中白肌提供爆发力，红肌提供耐力。并且在游动过程中，白肌的响应速度会相对更快。鱼类正是通过感知-驱动系统的协同作用，及时感知周围环境的变化，自适应调整不同部位肌肉的激活强度和次序，进而调整身体的运动学和游动方式实现最优推进。

　　受此启发，研究人员提出了基于仿生人工肌肉驱动的驱感一体化多模态软体机器鱼设计方法,在多驱动单元协同控制策略、嵌入式柔性感知系统、环境自适应智能切换三个方面取得了突破：

　　01 协同控制：

　　机器鱼以鲭鱼为仿生原型，由3D打印的柔性仿生结构和集成多种驱动单元与传感元件的一体化软体驱动器组成。其中，软体驱动器为多层的柱状结构，由压缩弹簧、介电弹性体（DE）薄膜和柔性电极构成。类似鱼类脊柱的压缩弹簧为机器鱼提供支撑，多层柔性薄膜模拟于鱼的肌肉组织，为机器鱼提供形变和动力。

　　02 柔性感知：

　　为了模拟鱼类的肌肉侧线系统并实现同步驱动和传感，研究团队提出利用和驱动器相同的本体材料，设计并开发了高精度的柔性应变并首次集成到机器鱼中，可帮助机器鱼实时感知游动状态和周围流体环境变化，并自适应的切换到最佳的游动模态。

　　03 环境适应：

　　通过协同控制多仿生肌肉单元的激励幅值和次序，机器鱼可以成功复现自然鱼类的多种游动模态，并适应不同的游动环境。例如C-type 1模式适合在狭窄空间作业，C-type 2模式适合在水中快速游动，C-type 3模式适合湍流环境，而S-type更适合低雷诺数的粘度环境下游动。机器鱼可以利用嵌入式柔性传感元件实时感知周围环境变化并自适应切换到最佳游动模态实现有效推进。相较同类软体水下机器人，该机器鱼首次实现驱动-感知-控制一体化，具有多种游泳模式数量（4种）与感知能力。

Jiang ZeminFanboy said:

But I think without Facebook, messenger and Instagram, and Google maps people won't buy Huawei phones in the west. So I guess it's impossible for harmonyOs to go to the West. I will buy anyway new Huawei phone, cause I left google ecosystem apps and don't need 5g. But I don't understand why 5g is not working in international version when in China it's working.

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I'm not talking about the Western market，I‘m talking about emerging market

this is mind boggling what Chinese researchers have achieved here. this could revolutionize display tech forever ..

Chinese scientists overcome technical difficulties in pure red perovskite LED​

In order to solve the world's difficult problem of poor phase stability of pure red light CsPbI3 perovskite quantum dot materials in new perovskite ultra-high-definition display technology, the team took the lead in proposing the "epitaxial heterojunction interface stress control" strategy, and for the first time used the all-solution method to achieve large-area in-situ controllable preparation of perovskite van der Waals epitaxial heterojunctions, successfully breaking through the dual bottlenecks of material stability and device performance, and developed a pure red light perovskite electroluminescent device (LED) with both high efficiency and high stability, providing key technical support for the development of next-generation ultra-high-definition display technology, marking a major technological breakthrough in this field ..

the team successfully developed a pure red perovskite LED with world-class performance and stability, solving the bottleneck problem that has long plagued this field ..

Rokid AR

Chinese researchers developed a two-dimensional biomimetic membrane to extract uranium from sea water, salt lake water, and waste water.

AI model for the diagnosis of rare diseases:

When symptoms such as "noticing significant developmental delays in mobility, language, and social interaction since age two" are entered into a dialogue box, an AI large model can generate alerts about potential rare genetic disorders, such as Rett syndrome or Angelman syndrome, or complex neurodevelopmental conditions within seconds, alongside medical recommendations including specialized departments for consultation and necessary examinations.

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Potentially new therapeutic target for Parkinson's disease:

The team, led by Yu Jintai, conducted five years of clinical and basic research, including genome-wide association analysis of large-scale populations. They determined that FAM171A2 acts as an "intelligent recognition gate" on neuronal cell membranes, selectively binding to and inducing misfolding of pathological alpha-synuclein, ultimately leading to neuronal death.

Building on this discovery, the researchers used artificial intelligence to screen over 7,000 compounds and identified a molecule called Bemcentinib that effectively inhibits the binding of FAM171A2 to alpha-synuclein.

"Our study findings provide hope to block the spread of pathological alpha-synuclein and thus delay the progression of the disease by inhibiting the target FAM171A2 from the preclinical to clinical stage of the disease," Yu said.

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Things in China are getting scary.

siegecrossbow said:

What are the benefits of putting data centers underwater? Temperature regulation?

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That's the theory. Maintenance is a bit more of a headache.

Flexible solar cells with power conversion efficiency greater than 16% could retain 80% of that efficiency at 80% strain (I.e. stretched). In addition to powering wearable electronics, humanoid robots will be able to use it as bionic skins in certain body parts to harvest power from the ambient light.

Mechanically robust and stretchable organic solar cells plasticized by small-molecule acceptors​

Stretchable organic solar cells for powering wearable devices have been achieved by blending a ductile donor semiconductor polymer with a plasticizing small-molecule acceptor to overcome the inherent brittleness of the photoactive components. Wang et al. have shown that the acceptor actually enhances ductility in the blend and maintains electron mobility despite its lack of crystallinity. Devices achieved a power conversion efficiency of greater than 16% and could maintain 80% of that efficiency at 80% strain.


快科技2月11日消息，华中科技大学团队成功研制出兼具卓越机械柔韧性与高效光电转换的可拉伸太阳能电池，为可穿戴设备供能提供了创新方案。

1月23日，其研究成果“小分子受体增塑实现机械强韧且可拉伸的有机太阳能电池”在《科学》杂志发表。

团队设计了新型小分子受体材料BTP-Si4，制备出的柔性/可拉伸电池效率超16%。

该电池极限拉伸形变可达95.5%，远超以往柔性电池，能与人体皮肤完美贴合，即便在手指、手腕、膝盖等大形变关节处也能正常工作。

同时，它在室内外光照下均可为多数可穿戴电子器件提供充足驱动。

此项研究意义重大，不仅破解了柔性光电子领域器件光电与机械性能相互制约的长期难题，还实现了有机太阳能电池性能及拉伸性的突破，为可穿戴设备的发展提供了有力的能源支持。

China broke many world records with this drilling ..

China completes drilling of Asia's deepest vertical well

1. Asia's deepest and world's second deepest borehole on the surface of earth.

2. The vertical well, the second across the world, also made other engineering breakthroughs globally, including the deepest liner cementing, deepest wireline imaging logging and fastest onshore drilling to exceed 10,000 meters.

3. This marks the first discovery of oil and gas beneath 10,000 meters on land globally.

4. Shenditake 1 was equipped with the world's first 12,000-meter automated drilling rig, developed by China

5. The operation set five records, including the deepest tail pipe cementing, deepest cable imaging logging, fastest drilling beyond 10,000 meters on land, and deepest core sampling in Asia.