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Category: materials

Tiny chip could help cameras spot hidden details

A tiny new chip could give cameras and sensing systems a far sharper view of the world, helping them detect subtle differences in materials and environments that standard color imaging systems cannot see.

In research led by Zhejiang University in collaboration with RMIT University, scientists have demonstrated a new way to build light-analysis capability directly into imaging hardware.

Cameras are highly effective at capturing images, but applications such as machine vision, automated inspection and environmental monitoring depend on understanding different colors and wavelengths of light, not just what something looks like. That information can reveal differences in materials, surface conditions or environmental changes that appear identical to the human eye.

Ultrafast laser pulses reveal a material’s hidden state of matter

What would it take to instantly transform a material from an electrical insulator into a conductive state without ever touching it? Using ultrafast laser pulses and powerful X-rays, scientists at the National Synchrotron Light Source II (NSLS-II)—a U.S. Department of Energy (DOE) Office of Science user facility at DOE’s Brookhaven National Laboratory—developed a methodology to generate “hidden” phases and understand why they work.

This research not only reveals a hidden state of matter and its fundamental interactions but also points toward new ways to control materials for future electronics and quantum technologies. Their work was recently published in Physical Review X.

At the heart of the research is an interesting class of quantum materials called magnetoresistive manganites. Under the right conditions, their properties and behaviors can change completely with external stimuli. In this case, the team used short bursts of laser light lasting 100 femtoseconds (one hundred quadrillionths of a second) to “switch” a material from an insulating state, where electricity cannot flow, to a conductive one.

New studies suggest consciousness exists in organisms without brains

How does a physical system such as the brain produce the ineffable phenomenon of conscious experience? Philosopher David Chalmers famously named this the “Hard Problem of Consciousness” in 1995. Proponents argue that, while cognitive functions such as categorisation or information integration might be explained mechanistically in the central nervous system, the origins of subjective experience resist such explanation. Detractors suggest that the Hard Problem is merely a collection of lesser puzzles that have yet to be solved through greater material understanding of the brain.

The heart of this controversy may lie in its core premise: that consciousness arises from a neuronal system organized around a brain. The deep entrenchment of this preconception isn’t surprising, given that our own consciousness is the only one we have access to. But this “brain-centrism” pervades the cognitive sciences, shaping our understanding of other beings and approaches to research. It’s one of several kinds of scientific chauvinism that currently limit the field of enquiry and hamper our scientific approach to other kinds of minds.

Rare-earth-free zinc oxide achieves a first in stress-to-light conversion

Mechanoluminescent materials convert mechanical energy such as stress, strain and vibration directly into light, making them attractive as self-powered sensors that require no batteries or wiring. From biomedical sensors to self-powered infrastructure monitoring sensors, mechanoluminescent materials have a wide range of potential applications. However, high-performance mechanoluminescent materials have traditionally relied on expensive rare-earth materials or complex material compositions.

Now, a research team led by Tohoku University, in collaboration with the University of Tsukuba and Saga University, has developed a zinc oxide (ZnO) material that exhibits strong, highly sensitive mechanoluminescence without using any rare-earth elements.

The newly developed material combines high sensitivity with low cost by using zinc oxide, an earth-abundant material already found in products such as sunscreens, cosmetics and ointments.

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Newly synthesized fullerene material remains metallic even under low temperatures

An international team whose research was coordinated by Osaka Metropolitan University (OMU) has reported the survival of metallic behavior in the strongly correlated molecular material ytterbium cesium fulleride (Yb₂CsC₆₀). The electrons in the newly synthesized material remained mobile and continued to conduct electricity even at the lowest temperatures studied, despite strong electron interactions that would normally be expected to drive the material into an insulating state.

The findings were published in Nature Communications.

In materials such as metals, electrons move freely, allowing them to conduct electricity. However, as interactions between electrons become stronger, freedom of motion can be suppressed. Under these conditions, materials undergo a phenomenon known as a Mott metal-insulator transition, where they change from a conducting metal into an insulating state in which electrons become effectively immobile.

Kyocera develops breakthrough multilayer ceramic core substrate for advanced AI semiconductors

face_with_colon_three I still think that ceramics would be very useful to stop the need for global mining operations that rely heavily on rare materials when they can make the same chip from ceramics.

To be shown at ECTC 2026, May 26–29 in Orlando, USA, the new substrate technology delivers superior rigidity and circuit miniaturization for next-gen data centers, AI, and ASIC packaging.

Hardy ice plant’s optical innovation inspires reflective design possibilities

Nature is filled with remarkable visual phenomena created by microscopic surface structures that interact with light in fascinating ways. The iridescent wings of butterflies, the shimmering feathers of birds and the glossy surfaces of flower petals are all examples of how living organisms control the reflection, absorption and scattering of light. These optical effects are not only visually striking but also serve important biological functions, including attracting pollinators, communication, camouflage and protection from environmental stress. Understanding these naturally occurring photonic structures has become an important area of research, as they provide inspiration for the development of advanced biomimetic materials and optical technologies.

One such example is the hardy ice plant, Delosperma cooperi, a perennial succulent native to South Africa and widely cultivated in Japan. The flower’s petals display a striking glossy appearance, prompting researchers to investigate the mechanism responsible for this effect.

Researchers from Shinshu University, led by professor Hiroshi Moriwaki, conducted this study to understand how the petals generate gloss and whether their surface structure could inspire the design of novel reflective materials. Kazuma Tanabe also was part of the research team. The findings are published in the journal Optical Materials.

Ancient hominins selected basalt sources for specific tools nearly 800,000 years ago, study reveals

A new study finds that ancient hominins nearly 800,000 years ago deliberately selected specific basalt sources for different stages of tool production rather than simply using whatever stone was available nearby. By tracing the geochemical “fingerprints” of stone tools to both exposed and now-buried basalt flows, the researchers demonstrated that these hominins possessed detailed environmental knowledge, advanced planning abilities, and long-term technological traditions that were maintained and repeated across generations.

A new study published in Scientific Reports provides new insights into the technological behavior and raw material procurement strategies of early Middle Pleistocene hominins at the Acheulian site of Gesher Benot Ya’aqov (GBY). The study uses geochemical analyses of basalt artifacts and nearby basalt sources to trace where the raw material used for tool production came from and to reconstruct how early hominins selected stone within a landscape that has changed dramatically over time. The research was carried out by Dr. Tzahi Golan and Dr. Yoav Ben Dor of the Geological Survey of Israel, and Prof. Naama Goren-Inbar of the Hebrew University of Jerusalem.

GBY, dated to about 780,000 years ago, preserves repeated occupations of Acheulian hominins along the shores of paleo-Lake Hula. Excavations directed by Prof. Goren-Inbar revealed a rich archaeological record, including stone tools made of flint, limestone and basalt, as well as evidence of fire use, plant exploitation, animal processing and fish consumption.

Achiral crystal reveals Raman optical activity through ferroaxial order

Raman optical activity, long thought to require chiral molecules or magnetic order, has been demonstrated in an achiral, nonmagnetic crystal by researchers at the Institute of Science Tokyo. The effect arises through ferroaxial order, a coordinated rotation of atoms within the lattice, and is detected using circularly polarized Raman spectroscopy. The findings show that optically inactive materials can also display chirality-like optical responses and expand the scope of optical techniques for discovering new materials.

In nature, molecules can be divided into two categories based on their symmetry: chiral and achiral. Chiral molecules are not identical to their mirror images, much like left and right hands. Achiral molecules, by contrast, are identical to their mirror images and therefore do not possess a definite handedness.

Light offers a way to distinguish between these two types. When light interacts with a chiral molecule, the response depends on its handedness. For example, chiral molecules absorb left-and right-circularly polarized light to different extents, a phenomenon known as circular dichroism. They also scatter these two types of light with different intensities, an effect called Raman optical activity (ROA), which is widely used to identify chirality. ROA has long been associated only with chiral molecules or with materials that have magnetic order, where inversion or time-reversal symmetry is broken.

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