Category Physics

Low-cost 3D printers could gain medical-grade precision from ultrathin light-control film

Ultra-thin optical film sharpens 3D printing precision
Researchers designed and fabricated a double-sided structure collimation film (DSSCF) with better collimation characteristics thanks to additional trapezoidal microstructures that prevent the large-angle leakage light seen with single-sided structure collimation film (SSSCF). The DSSCF also improves the light intensity uniformity when combined with a diffuser module. Credit: Ding-Zheng Lin, National Taiwan University of Science and Technology

Researchers have developed an ultra-thin optical film that improves the quality of the light used in LCD resin-based 3D printers. The advance helps ensure that tiny details are reproduced with precision, which could make it possible to 3D-print medical-grade or industrial-grade products at a lower cost.

Resin-based 3D printing, or vat photopoly...

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Why faster AI isn’t always better

AI Latency Perception

In the race to make AI models not just reason better but respond faster, latency—the delay before an answer appears—is often treated as a purely technical constraint, something to minimize and move past. But how is this relentless push for speed actually impacting the people using these systems every day?

There is a rich body of work in human–computer interaction linking faster response to better usability. But AI models are fundamentally different from the deterministic systems that previous research was built on. When you wait for a file to download or a page to load, the outcome is fixed and predictable.

AI models are probabilistic—you cannot anticipate the precise response...

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AI has crossed a threshold. What Claude Mythos means for the future of cybersecurity

Frontier AI Sandbox
Credit: Image generated by the editorial team using AI for illustrative purposes.

The limit of what artificial intelligence can achieve, known as frontier AI, has crossed another threshold. AI can now plan and execute sophisticated cyber operations with minimal guidance at speeds far beyond human capability.

That, at least, is the evidence from an independent test of Claude Mythos Preview, the latest and most advanced model in the Claude family of AI systems, developed by US tech firm Anthropic. Similar to ChatGPT, these can understand and generate human-like text, analyze information, and solve complex problems.

The finance sector is alarmed. It relies on highly interconnected digital systems that are especially attractive targets for sophisticated cyber-attacks...

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Engineered wood provides solar power even after the sun goes down

Engineered wood provides solar power even after the sun goes down
Design of interface-engineered wood-based CPCMs for solar-thermal energy conversion. BPNS@MPN drop-cast onto DW aerogels denoted as TBW, which after Ag reduction and 18-alkyl grafting was denoted as TBAW; the final SA-loaded CPCMs were denoted as TBAWP. Credit: Advanced Energy Materials (2026). DOI: 10.1002/aenm.70872

While sustainable solar energy can potentially meet our global power needs, it has one major flaw. When sunlight disappears, solar panels stop generating electricity. The problem is that while they do an excellent job of converting light into power, they are not so good at storing the energy they collect.

One solution is to use materials known to capture heat and release it later, such as phase change materials (PCMs)...

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