News on China's scientific and technological development.

tphuang said:

I wrote up a long thread about the importance of copper and how much China dominates the supply chain after the mining portion.

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Tsinghua University's Ultra-Small, Ultra-Light, Flexible Six-Dimensional Force/Torque Sensor Enhances Robotic Fingertip Dexterity​

Tsinghua University's Department of Precision Instruments has developed a flexible six-dimensional force/torque sensor with a simple structure, small size (fingertip-sized), and lightweight (0.30 g) . This sensor utilizes stacked thin-film thermistors to sense the spatial strain of a flexible pressure-thermal material, achieving flexible sensing of six-dimensional force/torque with a wide range and high precision . The team applied the sensor to the fingertips of a dexterous robot hand, enabling precise manipulation of objects. Furthermore, the sensor, applied to human fingertips, enables dexterous multi-dimensional, multi-task manipulation . For example, individuals with limited mobility, such as the disabled and elderly, can use fingertip manipulation to perform complex household tasks, such as remote control and collaborative grasping and storage .



Technological advancement
The flexible sensor utilizes a compact laminated design , with thin-film thermistors distributed across the upper and lower layers of the flexible pressure-thermal material. Under the action of six-dimensional forces/torques, the flexible pressure-thermal material generates spatial strain, which is detected by the thin-film thermistors located on the upper and lower layers. This allows for the precise sensing of six-dimensional forces/torques by combining simple thermal sensing with the pressure-thermal effect. The sensor has a simple structure, small size, and light weight . The measurement ranges of the six-dimensional force/torque for normal force (Fz), tangential force (Fx and Fy), moment (Mx and My), and torque (Mz) are 15 N, -5~5 N, -60~60 mN·m, and -20~20 mN·m, respectively. The root mean square error (RMSE) is 0.18 N, 0.15 N, 0.18 N, 0.58 mN·m, 0.62 mN·m, and 0.26 mN·m, respectively. The flexible sensor remains stable after passing 100,000 repeatability tests and is not affected by ambient temperature and humidity. The sensor has the advantages of wide range, high precision, high reliability, and high stability.

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zbb said:

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Compared with ordinary OLED, printed OLED panels have advantages such as excellent color performance, high resolution, high material utilization rate, low energy consumption, and low investment and manufacturing costs. All technologies adopted in the project are owned by TCL CSOT

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Before the presentation, Zhu had arrived at the podium in a blue blazer to deliver a keynote. He began by contrasting his own AI philosophy with what he called the “Silicon Valley narrative”, that AGI could be attained through more data and computing power. The Chinese media, the public and government agencies had been sold a false narrative, one that had spawned a profusion of vacuous Chinese “AI institutes” and inflated startup valuations, as he put it in a written version of the

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published later. One consequence of this misdirection was that it had convinced the Chinese that they were victims of the west’s “stranglehold”, or kabozi, a term that has come to refer to the US’s export controls to China on high-end computer chips. To Zhu, the key factor holding back AI progress is not insufficient computing power, but a misguided approach to the whole subject. What had started as an academic feud conducted in conferences and peer review journals now seemed to be entangled in an epoch-defining contest for technological supremacy.

Zhu is remarkably consistent in his views, but the way he frames his message has shifted over the years. In his speech, his rhetoric occasionally echoed that of party officials, who issue warnings not to follow the west on issues such as free trade and human rights. China, Zhu said, needed to “resist blindly following” the Silicon Valley narrative and develop its own “self-sufficient” approach to AI. (“The officials really like how he frames things,” one of his former students told me.) And yet in my four meetings with Zhu, he struck me as more intensely animated by the stakes of his intellectual quarrels than by international competition between the two countries where he had each spent exactly half his life. In service of his ambitions, he had learned to speak the Communist party’s vernacular.

By the time I left Zhu’s courtyard residence, it was the late afternoon. The sun had slanted below the rooftops, setting the magnolia blossoms aglow in a wash of pink. Zhu accompanied me back to the lattice fence that marked the entrance to his office. He wanted to reiterate that politics was not what was motivating him. “Over the last 30 years, I’ve been focused on one thing. It’s the unified theory of AI. To build understanding. That’s my only drive,” he told me. He brought up his research with Mumford again. “The Harvard and Brown school” of computer science, Zhu said, proudly. “That’s what we’re carrying on here.”

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